RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy2040
(159 letters)
>gnl|CDD|187598 cd05339, 17beta-HSDXI-like_SDR_c, human 17-beta-hydroxysteroid
dehydrogenase XI-like, classical (c) SDRs.
17-beta-hydroxysteroid dehydrogenases (17betaHSD) are a
group of isozymes that catalyze activation and
inactivation of estrogen and androgens. 17betaHSD type
XI, a classical SDR, preferentially converts
3alpha-adiol to androsterone but not numerous other
tested steroids. This subgroup of classical SDRs also
includes members identified as retinol dehydrogenases,
which convert retinol to retinal, a property that
overlaps with 17betaHSD activity. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRS are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes have a
3-glycine N-terminal NAD(P)(H)-binding pattern
(typically, TGxxxGxG in classical SDRs and TGxxGxxG in
extended SDRs), while substrate binding is in the
C-terminal region. A critical catalytic Tyr residue
(Tyr-151, human 15-hydroxyprostaglandin dehydrogenase
(15-PGDH) numbering), is often found in a conserved
YXXXK pattern. In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) or additional
Ser, contributing to the active site. Substrates for
these enzymes include sugars, steroids, alcohols, and
aromatic compounds. The standard reaction mechanism is a
proton relay involving the conserved Tyr and Lys, as
well as Asn (or Ser). Some SDR family members, including
17 beta-hydroxysteroid dehydrogenase contain an
additional helix-turn-helix motif that is not generally
found among SDRs.
Length = 243
Score = 67.3 bits (165), Expect = 3e-14
Identities = 25/55 (45%), Positives = 35/55 (63%), Gaps = 1/55 (1%)
Query: 103 IILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYKNIHTYK 157
I+L+TG G+GIGR LA +F + +V DI+EKG ET + + G K +H YK
Sbjct: 1 IVLITGGGSGIGRLLALEFAKRGAKVVILDINEKGAEETANNVRKAGGK-VHYYK 54
>gnl|CDD|236241 PRK08324, PRK08324, short chain dehydrogenase; Validated.
Length = 681
Score = 56.8 bits (138), Expect = 4e-10
Identities = 22/69 (31%), Positives = 32/69 (46%), Gaps = 1/69 (1%)
Query: 81 YSALESILLTLIPPSEKSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNE 140
Y +LE L +P K L G++ L+TGA GIG+ AK+ +V D+DE+
Sbjct: 403 YWSLEQAKLQRMPK-PKPLAGKVALVTGAAGGIGKATAKRLAAEGACVVLADLDEEAAEA 461
Query: 141 TKQMLEEQG 149
L
Sbjct: 462 AAAELGGPD 470
>gnl|CDD|235628 PRK05855, PRK05855, short chain dehydrogenase; Validated.
Length = 582
Score = 54.6 bits (132), Expect = 2e-09
Identities = 19/53 (35%), Positives = 30/53 (56%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
G+++++TGAG+GIGRE A F + +V DIDE T +++ G
Sbjct: 311 GPFSGKLVVVTGAGSGIGRETALAFAREGAEVVASDIDEAAAERTAELIRAAG 363
>gnl|CDD|131680 TIGR02632, RhaD_aldol-ADH, rhamnulose-1-phosphate aldolase/alcohol
dehydrogenase.
Length = 676
Score = 54.1 bits (130), Expect = 3e-09
Identities = 19/68 (27%), Positives = 30/68 (44%), Gaps = 1/68 (1%)
Query: 81 YSALESILLTLIPPSEKSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNE 140
Y LE L +P EK+L + +TG GIGRE A++ +V D++ +
Sbjct: 395 YWPLEEAKLRRMPK-EKTLARRVAFVTGGAGGIGRETARRLAAEGAHVVLADLNLEAAEA 453
Query: 141 TKQMLEEQ 148
+ Q
Sbjct: 454 VAAEINGQ 461
>gnl|CDD|223959 COG1028, FabG, Dehydrogenases with different specificities (related
to short-chain alcohol dehydrogenases) [Secondary
metabolites biosynthesis, transport, and catabolism /
General function prediction only].
Length = 251
Score = 49.0 bits (117), Expect = 1e-07
Identities = 15/62 (24%), Positives = 28/62 (45%), Gaps = 2/62 (3%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQH--KVTLVCWDIDEKGNNETKQMLEEQGYKNIHT 155
L G++ L+TGA +GIGR +A+ + +V + +E+ ++E G
Sbjct: 2 DLSGKVALVTGASSGIGRAIARALAREGARVVVAARRSEEEAAEALAAAIKEAGGGRAAA 61
Query: 156 YK 157
Sbjct: 62 VA 63
>gnl|CDD|235546 PRK05653, fabG, 3-ketoacyl-(acyl-carrier-protein) reductase;
Validated.
Length = 246
Score = 48.6 bits (117), Expect = 2e-07
Identities = 17/55 (30%), Positives = 27/55 (49%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYK 151
SL+G+ L+TGA GIGR +A + +V +D +E+ L G +
Sbjct: 1 MSLQGKTALVTGASRGIGRAIALRLAADGAKVVIYDSNEEAAEALAAELRAAGGE 55
>gnl|CDD|236357 PRK08945, PRK08945, putative oxoacyl-(acyl carrier protein)
reductase; Provisional.
Length = 247
Score = 46.4 bits (111), Expect = 9e-07
Identities = 17/37 (45%), Positives = 24/37 (64%)
Query: 93 PPSEKSLEGEIILLTGAGNGIGRELAKQFVQHKVTLV 129
P L+ IIL+TGAG+GIGRE A + +H T++
Sbjct: 4 QPKPDLLKDRIILVTGAGDGIGREAALTYARHGATVI 40
>gnl|CDD|180440 PRK06172, PRK06172, short chain dehydrogenase; Provisional.
Length = 253
Score = 45.5 bits (108), Expect = 2e-06
Identities = 18/53 (33%), Positives = 26/53 (49%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
+ G++ L+TG GIGR A F + +V D D G ET ++ E G
Sbjct: 3 MTFSGKVALVTGGAAGIGRATALAFAREGAKVVVADRDAAGGEETVALIREAG 55
>gnl|CDD|237100 PRK12429, PRK12429, 3-hydroxybutyrate dehydrogenase; Provisional.
Length = 258
Score = 44.9 bits (107), Expect = 4e-06
Identities = 17/56 (30%), Positives = 32/56 (57%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYKNIH 154
L+G++ L+TGA +GIG E+A + +V D++++ + L++ G K I
Sbjct: 2 LKGKVALVTGAASGIGLEIALALAKEGAKVVIADLNDEAAAAAAEALQKAGGKAIG 57
>gnl|CDD|235924 PRK07063, PRK07063, short chain dehydrogenase; Provisional.
Length = 260
Score = 44.7 bits (106), Expect = 4e-06
Identities = 13/51 (25%), Positives = 22/51 (43%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
L G++ L+TGA GIG +A+ F + + D+D +
Sbjct: 5 LAGKVALVTGAAQGIGAAIARAFAREGAAVALADLDAALAERAAAAIARDV 55
>gnl|CDD|187635 cd08930, SDR_c8, classical (c) SDR, subgroup 8. This subgroup has
a fairly well conserved active site tetrad and domain
size of the classical SDRs, but has an atypical
NAD-binding motif ([ST]G[GA]XGXXG). SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRs are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes catalyze a
wide range of activities including the metabolism of
steroids, cofactors, carbohydrates, lipids, aromatic
compounds, and amino acids, and act in redox sensing.
Classical SDRs have an TGXXX[AG]XG cofactor binding
motif and a YXXXK active site motif, with the Tyr
residue of the active site motif serving as a critical
catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 250
Score = 44.2 bits (105), Expect = 6e-06
Identities = 15/55 (27%), Positives = 24/55 (43%)
Query: 100 EGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYKNIH 154
E +IIL+TGA IG+ K + L+ DI+ + K+ L +
Sbjct: 1 EDKIILITGAAGLIGKAFCKALLSAGARLILADINAPALEQLKEELTNLYKNRVI 55
>gnl|CDD|236210 PRK08267, PRK08267, short chain dehydrogenase; Provisional.
Length = 260
Score = 43.0 bits (102), Expect = 2e-05
Identities = 16/44 (36%), Positives = 20/44 (45%), Gaps = 4/44 (9%)
Query: 104 ILLTGAGNGIGRELAKQFVQH--KVTLVCWDIDEKGNNETKQML 145
I +TGA +GIGR A F +V DI+E G L
Sbjct: 4 IFITGAASGIGRATALLFAAEGWRVGAY--DINEAGLAALAAEL 45
>gnl|CDD|235933 PRK07097, PRK07097, gluconate 5-dehydrogenase; Provisional.
Length = 265
Score = 43.1 bits (102), Expect = 2e-05
Identities = 21/60 (35%), Positives = 33/60 (55%), Gaps = 1/60 (1%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYKNIHTYK 157
SL+G+I L+TGA GIG +AK + + T+V DI+++ ++ E G H Y
Sbjct: 7 SLKGKIALITGASYGIGFAIAKAYAKAGATIVFNDINQELVDKGLAAYRELGI-EAHGYV 65
>gnl|CDD|235712 PRK06138, PRK06138, short chain dehydrogenase; Provisional.
Length = 252
Score = 42.8 bits (101), Expect = 2e-05
Identities = 17/57 (29%), Positives = 25/57 (43%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYKNIHT 155
L G + ++TGAG+GIGR AK F + +V D D + + G
Sbjct: 3 LAGRVAIVTGAGSGIGRATAKLFAREGARVVVADRDAEAAERVAAAIAAGGRAFARQ 59
>gnl|CDD|212491 cd05233, SDR_c, classical (c) SDRs. SDRs are a functionally
diverse family of oxidoreductases that have a single
domain with a structurally conserved Rossmann fold
(alpha/beta folding pattern with a central beta-sheet),
an NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRs are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes catalyze a wide range of
activities including the metabolism of steroids,
cofactors, carbohydrates, lipids, aromatic compounds,
and amino acids, and act in redox sensing. Classical
SDRs have an TGXXX[AG]XG cofactor binding motif and a
YXXXK active site motif, with the Tyr residue of the
active site motif serving as a critical catalytic
residue (Tyr-151, human prostaglandin dehydrogenase
(PGDH) numbering). In addition to the Tyr and Lys, there
is often an upstream Ser (Ser-138, PGDH numbering)
and/or an Asn (Asn-107, PGDH numbering) contributing to
the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 234
Score = 42.7 bits (101), Expect = 2e-05
Identities = 14/46 (30%), Positives = 24/46 (52%)
Query: 104 ILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
L+TGA +GIGR +A++ + +V D +E+ E + G
Sbjct: 1 ALVTGASSGIGRAIARRLAREGAKVVLADRNEEALAELAAIEALGG 46
>gnl|CDD|235506 PRK05565, fabG, 3-ketoacyl-(acyl-carrier-protein) reductase;
Provisional.
Length = 247
Score = 42.9 bits (102), Expect = 2e-05
Identities = 18/53 (33%), Positives = 34/53 (64%), Gaps = 3/53 (5%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQ--HKVTLVCWDIDEKGNNETKQMLEEQG 149
L G++ ++TGA GIGR +A+ + KV ++ +DI+E+ E + ++E+G
Sbjct: 3 LMGKVAIVTGASGGIGRAIAELLAKEGAKV-VIAYDINEEAAQELLEEIKEEG 54
>gnl|CDD|235975 PRK07231, fabG, 3-ketoacyl-(acyl-carrier-protein) reductase;
Provisional.
Length = 251
Score = 42.9 bits (102), Expect = 2e-05
Identities = 15/53 (28%), Positives = 27/53 (50%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
LEG++ ++TGA +GIG +A++F +V D +E+ + G
Sbjct: 1 MRLEGKVAIVTGASSGIGEGIARRFAAEGARVVVTDRNEEAAERVAAEILAGG 53
>gnl|CDD|187647 cd08943, R1PA_ADH_SDR_c, rhamnulose-1-phosphate aldolase/alcohol
dehydrogenase, classical (c) SDRs. This family has
bifunctional proteins with an N-terminal aldolase and a
C-terminal classical SDR domain. One member is
identified as a rhamnulose-1-phosphate aldolase/alcohol
dehydrogenase. The SDR domain has a canonical SDR
glycine-rich NAD(P) binding motif and a match to the
characteristic active site triad. However, it lacks an
upstream active site Asn typical of SDRs. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRs are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes catalyze a
wide range of activities including the metabolism of
steroids, cofactors, carbohydrates, lipids, aromatic
compounds, and amino acids, and act in redox sensing.
Classical SDRs have an TGXXX[AG]XG cofactor binding
motif and a YXXXK active site motif, with the Tyr
residue of the active site motif serving as a critical
catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 250
Score = 42.0 bits (99), Expect = 3e-05
Identities = 16/50 (32%), Positives = 23/50 (46%), Gaps = 2/50 (4%)
Query: 101 GEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGY 150
G++ L+TG +GIG +AK+ +V DID K QG
Sbjct: 1 GKVALVTGGASGIGLAIAKRLAAEGAAVVVADIDP--EIAEKVAEAAQGG 48
>gnl|CDD|211705 TIGR01963, PHB_DH, 3-hydroxybutyrate dehydrogenase. This model
represents a subfamily of the short chain
dehydrogenases. Characterized members so far as
3-hydroxybutyrate dehydrogenases and are found in
species that accumulate ester polmers called
polyhydroxyalkanoic acids (PHAs) under certain
conditions. Several members of the family are from
species not known to accumulate PHAs, including
Oceanobacillus iheyensis and Bacillus subtilis. However,
polymer formation is not required for there be a role
for 3-hydroxybutyrate dehydrogenase; it may be members
of this family have the same function in those species.
Length = 255
Score = 42.0 bits (99), Expect = 4e-05
Identities = 15/54 (27%), Positives = 26/54 (48%)
Query: 101 GEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYKNIH 154
G+ L+TGA +GIG +A+ +V D E+G ++ + G I+
Sbjct: 1 GKTALVTGAASGIGLAIARALAAAGANVVVNDFGEEGAEAAAKVAGDAGGSVIY 54
>gnl|CDD|213929 TIGR04316, dhbA_paeA, 2,3-dihydro-2,3-dihydroxybenzoate
dehydrogenase. Members of this family are
2,3-dihydro-2,3-dihydroxybenzoate dehydrogenase (EC
1.3.1.28), the third enzyme in the biosynthesis of
2,3-dihydroxybenzoic acid (DHB) from chorismate. The
first two enzymes are isochorismate synthase (EC
5.4.4.2) and isochorismatase (EC 3.3.2.1). Synthesis is
often followed by adenylation by the enzyme DHBA-AMP
ligase (EC 2.7.7.58) to activate (DHB) for a
non-ribosomal peptide synthetase.
Length = 250
Score = 41.9 bits (99), Expect = 4e-05
Identities = 16/53 (30%), Positives = 23/53 (43%), Gaps = 1/53 (1%)
Query: 105 LLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYKNIHTYK 157
L+TGA GIG +A+ + + D + + E L GY TYK
Sbjct: 2 LVTGAAQGIGYAVARALAEAGARVAAVDRNFEQLLELVADLRRYGYP-FATYK 53
>gnl|CDD|181297 PRK08217, fabG, 3-ketoacyl-(acyl-carrier-protein) reductase;
Provisional.
Length = 253
Score = 41.5 bits (98), Expect = 5e-05
Identities = 13/53 (24%), Positives = 26/53 (49%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYK 151
L+ ++I++TG G+GR +A+ Q L D++++ E G +
Sbjct: 3 LKDKVIVITGGAQGLGRAMAEYLAQKGAKLALIDLNQEKLEEAVAECGALGTE 55
>gnl|CDD|236190 PRK08220, PRK08220, 2,3-dihydroxybenzoate-2,3-dehydrogenase;
Validated.
Length = 252
Score = 41.4 bits (98), Expect = 6e-05
Identities = 11/48 (22%), Positives = 21/48 (43%)
Query: 94 PSEKSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNET 141
+ G+ + +TGA GIG +A FV+ ++ +D +
Sbjct: 1 MNAMDFSGKTVWVTGAAQGIGYAVALAFVEAGAKVIGFDQAFLTQEDY 48
>gnl|CDD|135765 PRK06113, PRK06113, 7-alpha-hydroxysteroid dehydrogenase;
Validated.
Length = 255
Score = 41.0 bits (96), Expect = 7e-05
Identities = 17/55 (30%), Positives = 30/55 (54%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYKNI 153
L+G+ ++TGAG GIG+E+A F ++V DI+ N +++ G +
Sbjct: 9 LDGKCAIITGAGAGIGKEIAITFATAGASVVVSDINADAANHVVDEIQQLGGQAF 63
>gnl|CDD|187594 cd05333, BKR_SDR_c, beta-Keto acyl carrier protein reductase (BKR),
involved in Type II FAS, classical (c) SDRs. This
subgroup includes the Escherichai coli K12 BKR, FabG.
BKR catalyzes the NADPH-dependent reduction of ACP in
the first reductive step of de novo fatty acid synthesis
(FAS). FAS consists of four elongation steps, which are
repeated to extend the fatty acid chain through the
addition of two-carbo units from malonyl acyl-carrier
protein (ACP): condensation, reduction, dehydration, and
a final reduction. Type II FAS, typical of plants and
many bacteria, maintains these activities on discrete
polypeptides, while type I FAS utilizes one or two
multifunctional polypeptides. BKR resembles enoyl
reductase, which catalyzes the second reduction step in
FAS. SDRs are a functionally diverse family of
oxidoreductases that have a single domain with
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet) NAD(P)(H) binding
region and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRS are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes have a 3-glycine N-terminal NAD(P)(H) binding
pattern: TGxxxGxG in classical SDRs. Extended SDRs have
additional elements in the C-terminal region, and
typically have a TGXXGXXG cofactor binding motif.
Complex (multidomain) SDRs such as ketoreductase domains
of fatty acid synthase have a GGXGXXG NAD(P) binding
motif and an altered active site motif (YXXXN). Fungal
type type ketoacyl reductases have a TGXXXGX(1-2)G
NAD(P)-binding motif. Some atypical SDRs have lost
catalytic activity and/or have an unusual NAD(P) binding
motif and missing or unusual active site residues.
Reactions catalyzed within the SDR family include
isomerization, decarboxylation, epimerization, C=N bond
reduction, dehydratase activity, dehalogenation,
Enoyl-CoA reduction, and carbonyl-alcohol
oxidoreduction. A critical catalytic Tyr residue
(Tyr-151, human 15-hydroxyprostaglandin dehydrogenase
(15-PGDH) numbering), is often found in a conserved
YXXXK pattern. In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) or additional
Ser, contributing to the active site. Substrates for
these enzymes include sugars, steroids, alcohols, and
aromatic compounds. The standard reaction mechanism is a
proton relay involving the conserved Tyr-151 and
Lys-155, and well as Asn-111 (or Ser). Some SDR family
members, including 17 beta-hydroxysteroid dehydrogenase
contain an additional helix-turn-helix motif that is not
generally found among SDRs.
Length = 240
Score = 41.0 bits (97), Expect = 8e-05
Identities = 14/50 (28%), Positives = 24/50 (48%)
Query: 102 EIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYK 151
++ L+TGA GIGR +A + + D E+ ET + ++ G
Sbjct: 1 KVALVTGASRGIGRAIALRLAAEGAKVAVTDRSEEAAAETVEEIKALGGN 50
>gnl|CDD|187636 cd08931, SDR_c9, classical (c) SDR, subgroup 9. This subgroup has
the canonical active site tetrad and NAD-binding motif
of the classical SDRs. SDRs are a functionally diverse
family of oxidoreductases that have a single domain with
a structurally conserved Rossmann fold (alpha/beta
folding pattern with a central beta-sheet), an
NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRs are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes catalyze a wide range of
activities including the metabolism of steroids,
cofactors, carbohydrates, lipids, aromatic compounds,
and amino acids, and act in redox sensing. Classical
SDRs have an TGXXX[AG]XG cofactor binding motif and a
YXXXK active site motif, with the Tyr residue of the
active site motif serving as a critical catalytic
residue (Tyr-151, human 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) numbering). In addition to the
Tyr and Lys, there is often an upstream Ser (Ser-138,
15-PGDH numbering) and/or an Asn (Asn-107, 15-PGDH
numbering) contributing to the active site; while
substrate binding is in the C-terminal region, which
determines specificity. The standard reaction mechanism
is a 4-pro-S hydride transfer and proton relay involving
the conserved Tyr and Lys, a water molecule stabilized
by Asn, and nicotinamide. Extended SDRs have additional
elements in the C-terminal region, and typically have a
TGXXGXXG cofactor binding motif. Complex (multidomain)
SDRs such as ketoreductase domains of fatty acid
synthase have a GGXGXXG NAD(P)-binding motif and an
altered active site motif (YXXXN). Fungal type ketoacyl
reductases have a TGXXXGX(1-2)G NAD(P)-binding motif.
Some atypical SDRs have lost catalytic activity and/or
have an unusual NAD(P)-binding motif and missing or
unusual active site residues. Reactions catalyzed within
the SDR family include isomerization, decarboxylation,
epimerization, C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 227
Score = 40.9 bits (96), Expect = 8e-05
Identities = 19/52 (36%), Positives = 28/52 (53%), Gaps = 3/52 (5%)
Query: 104 ILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYKNIHT 155
I +TGA +GIGRE A F ++ + +DIDE G + E G +N+
Sbjct: 3 IFITGAASGIGRETALLFARNGWFVGLYDIDEDG---LAALAAELGAENVVA 51
>gnl|CDD|183833 PRK12939, PRK12939, short chain dehydrogenase; Provisional.
Length = 250
Score = 40.7 bits (96), Expect = 9e-05
Identities = 15/54 (27%), Positives = 23/54 (42%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYK 151
+L G+ L+TGA G+G A+ + T+ D E LE G +
Sbjct: 4 NLAGKRALVTGAARGLGAAFAEALAEAGATVAFNDGLAAEARELAAALEAAGGR 57
>gnl|CDD|181225 PRK08085, PRK08085, gluconate 5-dehydrogenase; Provisional.
Length = 254
Score = 40.5 bits (95), Expect = 1e-04
Identities = 17/54 (31%), Positives = 27/54 (50%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYK 151
SL G+ IL+TG+ GIG LA ++ ++ DI + L ++G K
Sbjct: 6 SLAGKNILITGSAQGIGFLLATGLAEYGAEIIINDITAERAELAVAKLRQEGIK 59
>gnl|CDD|235726 PRK06181, PRK06181, short chain dehydrogenase; Provisional.
Length = 263
Score = 40.3 bits (95), Expect = 1e-04
Identities = 16/49 (32%), Positives = 25/49 (51%)
Query: 101 GEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
G+++++TGA GIGR LA + + LV +E Q L + G
Sbjct: 1 GKVVIITGASEGIGRALAVRLARAGAQLVLAARNETRLASLAQELADHG 49
>gnl|CDD|181585 PRK08936, PRK08936, glucose-1-dehydrogenase; Provisional.
Length = 261
Score = 40.1 bits (94), Expect = 1e-04
Identities = 16/54 (29%), Positives = 33/54 (61%), Gaps = 1/54 (1%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVC-WDIDEKGNNETKQMLEEQG 149
LEG+++++TG G+GR +A +F + K +V + DE+ N+ + +++ G
Sbjct: 3 SDLEGKVVVITGGSTGLGRAMAVRFGKEKAKVVINYRSDEEEANDVAEEIKKAG 56
>gnl|CDD|180458 PRK06194, PRK06194, hypothetical protein; Provisional.
Length = 287
Score = 40.0 bits (94), Expect = 2e-04
Identities = 14/53 (26%), Positives = 24/53 (45%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
K G++ ++TGA +G G A+ + LV D+ + + L QG
Sbjct: 2 KDFAGKVAVITGAASGFGLAFARIGAALGMKLVLADVQQDALDRAVAELRAQG 54
>gnl|CDD|181136 PRK07825, PRK07825, short chain dehydrogenase; Provisional.
Length = 273
Score = 39.9 bits (94), Expect = 2e-04
Identities = 11/38 (28%), Positives = 18/38 (47%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDE 135
L G+++ +TG GIG A+ + D+DE
Sbjct: 2 DLRGKVVAITGGARGIGLATARALAALGARVAIGDLDE 39
>gnl|CDD|180371 PRK06057, PRK06057, short chain dehydrogenase; Provisional.
Length = 255
Score = 39.7 bits (93), Expect = 2e-04
Identities = 14/39 (35%), Positives = 22/39 (56%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKG 137
L G + ++TG G+GIG A++ T+V DID +
Sbjct: 5 LAGRVAVITGGGSGIGLATARRLAAEGATVVVGDIDPEA 43
>gnl|CDD|187613 cd05355, SDR_c1, classical (c) SDR, subgroup 1. These proteins are
members of the classical SDR family, with a canonical
active site tetrad and a typical Gly-rich NAD-binding
motif. SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRs are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes catalyze a wide range of activities including
the metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 270
Score = 39.6 bits (93), Expect = 2e-04
Identities = 22/60 (36%), Positives = 34/60 (56%), Gaps = 3/60 (5%)
Query: 94 PSEKSLEGEIILLTGAGNGIGRELAKQFVQH--KVTLVCWDIDEKGNNETKQMLEEQGYK 151
S K L+G+ L+TG +GIGR +A F + V + +E ETK+++EE+G K
Sbjct: 20 GSGK-LKGKKALITGGDSGIGRAVAIAFAREGADVAINYLPEEEDDAEETKKLIEEEGRK 78
>gnl|CDD|235739 PRK06200, PRK06200, 2,3-dihydroxy-2,3-dihydrophenylpropionate
dehydrogenase; Provisional.
Length = 263
Score = 39.6 bits (93), Expect = 2e-04
Identities = 12/25 (48%), Positives = 19/25 (76%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQ 123
L G++ L+TG G+GIGR L ++F+
Sbjct: 4 LHGQVALITGGGSGIGRALVERFLA 28
>gnl|CDD|187624 cd05366, meso-BDH-like_SDR_c, meso-2,3-butanediol
dehydrogenase-like, classical (c) SDRs. 2,3-butanediol
dehydrogenases (BDHs) catalyze the NAD+ dependent
conversion of 2,3-butanediol to acetonin; BDHs are
classified into types according to their
stereospecificity as to substrates and products.
Included in this subgroup are Klebsiella pneumonia
meso-BDH which catalyzes meso-2,3-butanediol to
D(-)-acetonin, and Corynebacterium glutamicum L-BDH
which catalyzes lX+)-2,3-butanediol to L(+)-acetonin.
This subgroup is comprised of classical SDRs with the
characteristic catalytic triad and NAD-binding motif.
SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRs are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes catalyze a wide range of activities including
the metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 257
Score = 39.3 bits (92), Expect = 3e-04
Identities = 17/58 (29%), Positives = 29/58 (50%), Gaps = 2/58 (3%)
Query: 101 GEIILLTGAGNGIGRELAKQFVQHKVTLVCWDID-EKGNNETKQMLEEQGYKNIHTYK 157
++ ++TGA GIGR +A++ +V D++ E+ T Q + E GY N
Sbjct: 2 SKVAIITGAAQGIGRAIAERLAADGFNIVLADLNLEEAAKSTIQEISEAGY-NAVAVG 58
>gnl|CDD|177895 PLN02253, PLN02253, xanthoxin dehydrogenase.
Length = 280
Score = 39.4 bits (92), Expect = 3e-04
Identities = 19/65 (29%), Positives = 30/65 (46%), Gaps = 5/65 (7%)
Query: 93 PPSEKSLEGEIILLTGAGNGIGRELAKQFVQH--KVTLVCWDI-DEKGNNETKQMLEEQG 149
+ L G++ L+TG GIG + + F +H KV +V D+ D+ G N + E
Sbjct: 10 SLPSQRLLGKVALVTGGATGIGESIVRLFHKHGAKVCIV--DLQDDLGQNVCDSLGGEPN 67
Query: 150 YKNIH 154
H
Sbjct: 68 VCFFH 72
>gnl|CDD|235633 PRK05872, PRK05872, short chain dehydrogenase; Provisional.
Length = 296
Score = 39.6 bits (93), Expect = 3e-04
Identities = 16/43 (37%), Positives = 25/43 (58%)
Query: 94 PSEKSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEK 136
P SL G+++++TGA GIG ELA++ L D++E
Sbjct: 2 PPMTSLAGKVVVVTGAARGIGAELARRLHARGAKLALVDLEEA 44
>gnl|CDD|235545 PRK05650, PRK05650, short chain dehydrogenase; Provisional.
Length = 270
Score = 39.3 bits (92), Expect = 3e-04
Identities = 16/46 (34%), Positives = 30/46 (65%)
Query: 104 ILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
+++TGA +G+GR +A ++ + L D++E+G ET ++L E G
Sbjct: 3 VMITGAASGLGRAIALRWAREGWRLALADVNEEGGEETLKLLREAG 48
>gnl|CDD|212492 cd05327, retinol-DH_like_SDR_c_like, retinol dehydrogenase
(retinol-DH), Light dependent Protochlorophyllide
(Pchlide) OxidoReductase (LPOR) and related proteins,
classical (c) SDRs. Classical SDR subgroup containing
retinol-DHs, LPORs, and related proteins. Retinol is
processed by a medium chain alcohol dehydrogenase
followed by retinol-DHs. Pchlide reductases act in
chlorophyll biosynthesis. There are distinct enzymes
that catalyze Pchlide reduction in light or dark
conditions. Light-dependent reduction is via an
NADP-dependent SDR, LPOR. Proteins in this subfamily
share the glycine-rich NAD-binding motif of the
classical SDRs, have a partial match to the canonical
active site tetrad, but lack the typical active site
Ser. This subgroup includes the human proteins: retinol
dehydrogenase -12, -13 ,and -14, dehydrogenase/reductase
SDR family member (DHRS)-12 , -13 and -X (a DHRS on
chromosome X), and WWOX (WW domain-containing
oxidoreductase), as well as a Neurospora crassa SDR
encoded by the blue light inducible bli-4 gene. SDRs are
a functionally diverse family of oxidoreductases that
have a single domain with a structurally conserved
Rossmann fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRs are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes catalyze a
wide range of activities including the metabolism of
steroids, cofactors, carbohydrates, lipids, aromatic
compounds, and amino acids, and act in redox sensing.
Classical SDRs have an TGXXX[AG]XG cofactor binding
motif and a YXXXK active site motif, with the Tyr
residue of the active site motif serving as a critical
catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 269
Score = 39.1 bits (92), Expect = 3e-04
Identities = 16/57 (28%), Positives = 32/57 (56%), Gaps = 3/57 (5%)
Query: 101 GEIILLTGAGNGIGRELAKQFVQH--KVTLVCWDIDEKGNNETKQMLEEQGYKNIHT 155
G+++++TGA +GIG+E A++ + V + C + EKG ++ +E G +
Sbjct: 1 GKVVVITGANSGIGKETARELAKRGAHVIIACRNE-EKGEEAAAEIKKETGNAKVEV 56
>gnl|CDD|187587 cd05326, secoisolariciresinol-DH_like_SDR_c, secoisolariciresinol
dehydrogenase (secoisolariciresinol-DH)-like, classical
(c) SDRs. Podophyllum secoisolariciresinol-DH is a homo
tetrameric, classical SDR that catalyzes the
NAD-dependent conversion of (-)-secoisolariciresinol to
(-)-matairesinol via a (-)-lactol intermediate.
(-)-Matairesinol is an intermediate to various
8'-lignans, including the cancer-preventive mammalian
lignan, and those involved in vascular plant defense.
This subgroup also includes rice momilactone A synthase
which catalyzes the conversion of
3beta-hydroxy-9betaH-pimara-7,15-dien-19,6beta-olide
into momilactone A, Arabidopsis ABA2 which during
abscisic acid (ABA) biosynthesis, catalyzes the
conversion of xanthoxin to abscisic aldehyde and, maize
Tasselseed2 which participate in the maize sex
determination pathway. SDRs are a functionally diverse
family of oxidoreductases that have a single domain with
a structurally conserved Rossmann fold (alpha/beta
folding pattern with a central beta-sheet), an
NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRs are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes catalyze a wide range of
activities including the metabolism of steroids,
cofactors, carbohydrates, lipids, aromatic compounds,
and amino acids, and act in redox sensing. Classical
SDRs have an TGXXX[AG]XG cofactor binding motif and a
YXXXK active site motif, with the Tyr residue of the
active site motif serving as a critical catalytic
residue (Tyr-151, 15-hydroxyprostaglandin dehydrogenase
(15-PGDH) numbering). In addition to the Tyr and Lys,
there is often an upstream Ser (Ser-138, 15-PGDH
numbering) and/or an Asn (Asn-107, 15-PGDH numbering)
contributing to the active site; while substrate binding
is in the C-terminal region, which determines
specificity. The standard reaction mechanism is a
4-pro-S hydride transfer and proton relay involving the
conserved Tyr and Lys, a water molecule stabilized by
Asn, and nicotinamide. Extended SDRs have additional
elements in the C-terminal region, and typically have a
TGXXGXXG cofactor binding motif. Complex (multidomain)
SDRs such as ketoreductase domains of fatty acid
synthase have a GGXGXXG NAD(P)-binding motif and an
altered active site motif (YXXXN). Fungal type ketoacyl
reductases have a TGXXXGX(1-2)G NAD(P)-binding motif.
Some atypical SDRs have lost catalytic activity and/or
have an unusual NAD(P)-binding motif and missing or
unusual active site residues. Reactions catalyzed within
the SDR family include isomerization, decarboxylation,
epimerization, C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 249
Score = 39.0 bits (91), Expect = 4e-04
Identities = 14/37 (37%), Positives = 24/37 (64%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDE 135
L+G++ ++TG +GIG A+ F +H +V DID+
Sbjct: 2 LDGKVAIITGGASGIGEATARLFAKHGARVVIADIDD 38
>gnl|CDD|233590 TIGR01830, 3oxo_ACP_reduc, 3-oxoacyl-(acyl-carrier-protein)
reductase. This model represents 3-oxoacyl-[ACP]
reductase, also called 3-ketoacyl-acyl carrier protein
reductase, an enzyme of fatty acid biosynthesis [Fatty
acid and phospholipid metabolism, Biosynthesis].
Length = 239
Score = 38.7 bits (91), Expect = 4e-04
Identities = 15/51 (29%), Positives = 25/51 (49%), Gaps = 1/51 (1%)
Query: 105 LLTGAGNGIGRELAKQFVQHKVTLVCWDI-DEKGNNETKQMLEEQGYKNIH 154
L+TGA GIGR +A + + ++ E+G E + L+ G K +
Sbjct: 2 LVTGASRGIGRAIALKLAKEGAKVIITYRSSEEGAEEVVEELKAYGVKALG 52
>gnl|CDD|183775 PRK12826, PRK12826, 3-ketoacyl-(acyl-carrier-protein) reductase;
Reviewed.
Length = 251
Score = 38.7 bits (91), Expect = 4e-04
Identities = 20/62 (32%), Positives = 30/62 (48%), Gaps = 5/62 (8%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQ--HKVTLVCWDIDEKGNNETKQMLEEQGYKNIH 154
+ LEG + L+TGA GIGR +A + +V +V DI T +++E G K
Sbjct: 2 RDLEGRVALVTGAARGIGRAIAVRLAADGAEVIVV--DICGDDAAATAELVEAAGGK-AR 58
Query: 155 TY 156
Sbjct: 59 AR 60
>gnl|CDD|181305 PRK08226, PRK08226, short chain dehydrogenase; Provisional.
Length = 263
Score = 38.6 bits (90), Expect = 5e-04
Identities = 17/53 (32%), Positives = 28/53 (52%), Gaps = 1/53 (1%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYK 151
L G+ L+TGA GIG +A+ F +H L+ DI + + L +G++
Sbjct: 4 LTGKTALITGALQGIGEGIARVFARHGANLILLDISPEI-EKLADELCGRGHR 55
>gnl|CDD|187628 cd05370, SDR_c2, classical (c) SDR, subgroup 2. Short-chain
dehydrogenases/reductases (SDRs, aka Tyrosine-dependent
oxidoreductases) are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRs are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes catalyze a wide range of activities including
the metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 228
Score = 38.4 bits (90), Expect = 5e-04
Identities = 11/27 (40%), Positives = 18/27 (66%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQ 123
L G +L+TG +GIG LA++F++
Sbjct: 1 MKLTGNTVLITGGTSGIGLALARKFLE 27
>gnl|CDD|169556 PRK08703, PRK08703, short chain dehydrogenase; Provisional.
Length = 239
Score = 38.4 bits (89), Expect = 6e-04
Identities = 11/33 (33%), Positives = 20/33 (60%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQHKVTLV 129
+L + IL+TGA G+G ++AK + T++
Sbjct: 2 ATLSDKTILVTGASQGLGEQVAKAYAAAGATVI 34
>gnl|CDD|237218 PRK12825, fabG, 3-ketoacyl-(acyl-carrier-protein) reductase;
Provisional.
Length = 249
Score = 38.3 bits (90), Expect = 7e-04
Identities = 17/54 (31%), Positives = 27/54 (50%), Gaps = 3/54 (5%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQ--HKVTLVCWDIDEKGNNETKQMLEEQG 149
SL G + L+TGA G+GR +A + + V + DE+ E + +E G
Sbjct: 3 SLMGRVALVTGAARGLGRAIALRLARAGADVVVHY-RSDEEAAEELVEAVEALG 55
>gnl|CDD|187599 cd05340, Ycik_SDR_c, Escherichia coli K-12 YCIK-like, classical (c)
SDRs. Escherichia coli K-12 YCIK and related proteins
have a canonical classical SDR nucleotide-binding motif
and active site tetrad. They are predicted oxoacyl-(acyl
carrier protein/ACP) reductases. SDRs are a functionally
diverse family of oxidoreductases that have a single
domain with a structurally conserved Rossmann fold
(alpha/beta folding pattern with a central beta-sheet),
an NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRS are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes have a 3-glycine N-terminal
NAD(P)(H)-binding pattern (typically, TGxxxGxG in
classical SDRs and TGxxGxxG in extended SDRs), while
substrate binding is in the C-terminal region. A
critical catalytic Tyr residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering), is often found in a conserved YXXXK pattern.
In addition to the Tyr and Lys, there is often an
upstream Ser (Ser-138, 15-PGDH numbering) and/or an Asn
(Asn-107, 15-PGDH numbering) or additional Ser,
contributing to the active site. Substrates for these
enzymes include sugars, steroids, alcohols, and aromatic
compounds. The standard reaction mechanism is a proton
relay involving the conserved Tyr and Lys, as well as
Asn (or Ser). Some SDR family members, including 17
beta-hydroxysteroid dehydrogenase contain an additional
helix-turn-helix motif that is not generally found among
SDRs.
Length = 236
Score = 38.3 bits (89), Expect = 7e-04
Identities = 17/51 (33%), Positives = 29/51 (56%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
L IIL+TGA +GIGRE A + ++ T++ +E+ + + E+G
Sbjct: 2 LNDRIILVTGASDGIGREAALTYARYGATVILLGRNEEKLRQVADHINEEG 52
>gnl|CDD|181491 PRK08589, PRK08589, short chain dehydrogenase; Validated.
Length = 272
Score = 37.8 bits (88), Expect = 9e-04
Identities = 18/55 (32%), Positives = 28/55 (50%), Gaps = 1/55 (1%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYK 151
K LE ++ ++TGA GIG+ A Q ++ DI E +ET ++ G K
Sbjct: 2 KRLENKVAVITGASTGIGQASAIALAQEGAYVLAVDIAEAV-SETVDKIKSNGGK 55
>gnl|CDD|226674 COG4221, COG4221, Short-chain alcohol dehydrogenase of unknown
specificity [General function prediction only].
Length = 246
Score = 38.0 bits (89), Expect = 9e-04
Identities = 13/40 (32%), Positives = 22/40 (55%), Gaps = 2/40 (5%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQ--HKVTLVCWDID 134
+L+G++ L+TGA +GIG A+ + KV L +
Sbjct: 2 TTLKGKVALITGASSGIGEATARALAEAGAKVVLAARREE 41
>gnl|CDD|235925 PRK07067, PRK07067, sorbitol dehydrogenase; Provisional.
Length = 257
Score = 37.7 bits (88), Expect = 0.001
Identities = 14/54 (25%), Positives = 25/54 (46%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGY 150
L+G++ LLTGA +GIG +A++++ +V DI +
Sbjct: 2 MRLQGKVALLTGAASGIGEAVAERYLAEGARVVIADIKPARARLAALEIGPAAI 55
>gnl|CDD|131468 TIGR02415, 23BDH, acetoin reductases. One member of this family,
as characterized in Klebsiella terrigena, is described
as able to interconvert acetoin + NADH with
meso-2,3-butanediol + NAD(+). It is also called capable
of irreversible reduction of diacetyl with NADH to
acetoin. Blomqvist, et al. decline to specify either EC
1.1.1.4 which is (R,R)-butanediol dehydrogenase, or EC
1.1.1.5, which is acetoin dehydrogenase without a
specified stereochemistry, for this enzyme. This enzyme
is a homotetramer in the family of short chain
dehydrogenases (pfam00106). Another member of this
family, from Corynebacterium glutamicum, is called
L-2,3-butanediol dehydrogenase (PMID:11577733) [Energy
metabolism, Fermentation].
Length = 254
Score = 37.8 bits (88), Expect = 0.001
Identities = 13/49 (26%), Positives = 27/49 (55%)
Query: 105 LLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYKNI 153
L+TG GIG+ +A++ + + D++E+ ET + + + G K +
Sbjct: 4 LVTGGAQGIGKGIAERLAKDGFAVAVADLNEETAKETAKEINQAGGKAV 52
>gnl|CDD|235962 PRK07201, PRK07201, short chain dehydrogenase; Provisional.
Length = 657
Score = 38.0 bits (89), Expect = 0.001
Identities = 18/60 (30%), Positives = 30/60 (50%), Gaps = 5/60 (8%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQH--KVTLVCWDIDEKGNNETKQMLEEQGYKNIHTY 156
L G+++L+TGA +GIGR A + + V LV + + +E + +G H Y
Sbjct: 369 LVGKVVLITGASSGIGRATAIKVAEAGATVFLVARNGEAL--DELVAEIRAKGGT-AHAY 425
>gnl|CDD|235500 PRK05557, fabG, 3-ketoacyl-(acyl-carrier-protein) reductase;
Validated.
Length = 248
Score = 37.5 bits (88), Expect = 0.001
Identities = 18/57 (31%), Positives = 26/57 (45%), Gaps = 3/57 (5%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQ--HKVTLVCWDIDEKGNNETKQMLEEQGYK 151
SLEG++ L+TGA GIGR +A++ V + E G + G K
Sbjct: 1 MSLEGKVALVTGASRGIGRAIAERLAAQGANVVINY-ASSEAGAEALVAEIGALGGK 56
>gnl|CDD|187621 cd05363, SDH_SDR_c, Sorbitol dehydrogenase (SDH), classical (c)
SDR. This bacterial subgroup includes Rhodobacter
sphaeroides SDH, and other SDHs. SDH preferentially
interconverts D-sorbitol (D-glucitol) and D-fructose,
but also interconverts L-iditol/L-sorbose and
galactitol/D-tagatose. SDH is NAD-dependent and is a
dimeric member of the SDR family. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRS are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes have a
3-glycine N-terminal NAD(P)(H)-binding pattern
(typically, TGxxxGxG in classical SDRs and TGxxGxxG in
extended SDRs), while substrate binding is in the
C-terminal region. A critical catalytic Tyr residue
(Tyr-151, human 15-hydroxyprostaglandin dehydrogenase
(15-PGDH) numbering), is often found in a conserved
YXXXK pattern. In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) or additional
Ser, contributing to the active site. Substrates for
these enzymes include sugars, steroids, alcohols, and
aromatic compounds. The standard reaction mechanism is a
proton relay involving the conserved Tyr and Lys, as
well as Asn (or Ser). Some SDR family members, including
17 beta-hydroxysteroid dehydrogenase contain an
additional helix-turn-helix motif that is not generally
found among SDRs.
Length = 254
Score = 37.6 bits (87), Expect = 0.001
Identities = 14/52 (26%), Positives = 25/52 (48%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGY 150
L+G+ L+TG+ GIGR A+ +V+ + DI+ + T +
Sbjct: 1 LDGKTALITGSARGIGRAFAQAYVREGARVAIADINLEAARATAAEIGPAAC 52
>gnl|CDD|236399 PRK09186, PRK09186, flagellin modification protein A; Provisional.
Length = 256
Score = 37.3 bits (87), Expect = 0.001
Identities = 18/58 (31%), Positives = 31/58 (53%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYKNIHT 155
L+G+ IL+TGAG IG L K ++ ++ DID++ NE + L ++ +
Sbjct: 1 MLKGKTILITGAGGLIGSALVKAILEAGGIVIAADIDKEALNELLESLGKEFKSKKLS 58
>gnl|CDD|187591 cd05330, cyclohexanol_reductase_SDR_c, cyclohexanol reductases,
including levodione reductase, classical (c) SDRs.
Cyloclohexanol reductases,including
(6R)-2,2,6-trimethyl-1,4-cyclohexanedione (levodione)
reductase of Corynebacterium aquaticum, catalyze the
reversible oxidoreduction of hydroxycyclohexanone
derivatives. SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRs are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes catalyze a wide range of activities including
the metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 257
Score = 37.5 bits (87), Expect = 0.001
Identities = 14/46 (30%), Positives = 25/46 (54%)
Query: 102 EIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEE 147
+++L+TG G+G+G A + + L D++E+G K L E
Sbjct: 4 KVVLITGGGSGLGLATAVRLAKEGAKLSLVDLNEEGLEAAKAALLE 49
>gnl|CDD|187584 cd05323, ADH_SDR_c_like, insect type alcohol dehydrogenase
(ADH)-like, classical (c) SDRs. This subgroup contains
insect type ADH, and 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) type I; these proteins are
classical SDRs. ADH catalyzes the NAD+-dependent
oxidation of alcohols to aldehydes/ketones. This
subgroup is distinct from the zinc-dependent alcohol
dehydrogenases of the medium chain
dehydrogenase/reductase family, and evolved in fruit
flies to allow the digestion of fermenting fruit.
15-PGDH catalyzes the NAD-dependent interconversion of
(5Z,13E)-(15S)-11alpha,15-dihydroxy-9-oxoprost-13-enoate
and (5Z,13E)-11alpha-hydroxy-9,15-dioxoprost-13-enoate,
and has a typical SDR glycine-rich NAD-binding motif,
which is not fully present in ADH. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRs are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes catalyze a
wide range of activities including the metabolism of
steroids, cofactors, carbohydrates, lipids, aromatic
compounds, and amino acids, and act in redox sensing.
Classical SDRs have an TGXXX[AG]XG cofactor binding
motif and a YXXXK active site motif, with the Tyr
residue of the active site motif serving as a critical
catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 244
Score = 37.3 bits (87), Expect = 0.001
Identities = 9/38 (23%), Positives = 17/38 (44%)
Query: 105 LLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETK 142
++TG +GIG AK ++ + D +E +
Sbjct: 4 IITGGASGIGLATAKLLLKKGAKVAILDRNENPGAAAE 41
>gnl|CDD|180993 PRK07478, PRK07478, short chain dehydrogenase; Provisional.
Length = 254
Score = 37.2 bits (87), Expect = 0.001
Identities = 13/32 (40%), Positives = 20/32 (62%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLV 129
L G++ ++TGA +GIGR AK F + +V
Sbjct: 3 RLNGKVAIITGASSGIGRAAAKLFAREGAKVV 34
>gnl|CDD|187606 cd05348, BphB-like_SDR_c,
cis-biphenyl-2,3-dihydrodiol-2,3-dehydrogenase
(BphB)-like, classical (c) SDRs.
cis-biphenyl-2,3-dihydrodiol-2,3-dehydrogenase (BphB) is
a classical SDR, it is of particular importance for its
role in the degradation of biphenyl/polychlorinated
biphenyls(PCBs); PCBs are a significant source of
environmental contamination. This subgroup also includes
Pseudomonas putida F1
cis-biphenyl-1,2-dihydrodiol-1,2-dehydrogenase (aka
cis-benzene glycol dehydrogenase, encoded by the bnzE
gene), which participates in benzene metabolism. In
addition it includes Pseudomonas sp. C18 putative
1,2-dihydroxy-1,2-dihydronaphthalene dehydrogenase (aka
dibenzothiophene dihydrodiol dehydrogenase, encoded by
the doxE gene) which participates in an upper
naphthalene catabolic pathway. SDRs are a functionally
diverse family of oxidoreductases that have a single
domain with a structurally conserved Rossmann fold
(alpha/beta folding pattern with a central beta-sheet),
an NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRs are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes catalyze a wide range of
activities including the metabolism of steroids,
cofactors, carbohydrates, lipids, aromatic compounds,
and amino acids, and act in redox sensing. Classical
SDRs have an TGXXX[AG]XG cofactor binding motif and a
YXXXK active site motif, with the Tyr residue of the
active site motif serving as a critical catalytic
residue (Tyr-151, human 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) numbering). In addition to the
Tyr and Lys, there is often an upstream Ser (Ser-138,
15-PGDH numbering) and/or an Asn (Asn-107, 15-PGDH
numbering) contributing to the active site; while
substrate binding is in the C-terminal region, which
determines specificity. The standard reaction mechanism
is a 4-pro-S hydride transfer and proton relay involving
the conserved Tyr and Lys, a water molecule stabilized
by Asn, and nicotinamide. Extended SDRs have additional
elements in the C-terminal region, and typically have a
TGXXGXXG cofactor binding motif. Complex (multidomain)
SDRs such as ketoreductase domains of fatty acid
synthase have a GGXGXXG NAD(P)-binding motif and an
altered active site motif (YXXXN). Fungal type ketoacyl
reductases have a TGXXXGX(1-2)G NAD(P)-binding motif.
Some atypical SDRs have lost catalytic activity and/or
have an unusual NAD(P)-binding motif and missing or
unusual active site residues. Reactions catalyzed within
the SDR family include isomerization, decarboxylation,
epimerization, C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 257
Score = 37.3 bits (87), Expect = 0.001
Identities = 13/24 (54%), Positives = 20/24 (83%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFV 122
L+GE+ L+TG G+G+GR L ++FV
Sbjct: 2 LKGEVALITGGGSGLGRALVERFV 25
>gnl|CDD|226476 COG3967, DltE, Short-chain dehydrogenase involved in D-alanine
esterification of lipoteichoic acid and wall teichoic
acid (D-alanine transfer protein) [Cell envelope
biogenesis, outer membrane].
Length = 245
Score = 37.0 bits (86), Expect = 0.002
Identities = 12/26 (46%), Positives = 17/26 (65%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQ 123
G IL+TG +GIG LAK+F++
Sbjct: 2 KTTGNTILITGGASGIGLALAKRFLE 27
>gnl|CDD|187605 cd05347, Ga5DH-like_SDR_c, gluconate 5-dehydrogenase (Ga5DH)-like,
classical (c) SDRs. Ga5DH catalyzes the NADP-dependent
conversion of carbon source D-gluconate and
5-keto-D-gluconate. This SDR subgroup has a classical
Gly-rich NAD(P)-binding motif and a conserved active
site tetrad pattern. However, it has been proposed that
Arg104 (Streptococcus suis Ga5DH numbering), as well as
an active site Ca2+, play a critical role in catalysis.
In addition to Ga5DHs this subgroup contains Erwinia
chrysanthemi KduD which is involved in pectin
degradation, and is a putative
2,5-diketo-3-deoxygluconate dehydrogenase. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRs are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes catalyze a
wide range of activities including the metabolism of
steroids, cofactors, carbohydrates, lipids, aromatic
compounds, and amino acids, and act in redox sensing.
Classical SDRs have an TGXXX[AG]XG cofactor binding
motif and a YXXXK active site motif, with the Tyr
residue of the active site motif serving as a critical
catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107,15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 248
Score = 37.0 bits (86), Expect = 0.002
Identities = 17/52 (32%), Positives = 31/52 (59%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
SL+G++ L+TGA GIG +A + +V +E+ E +Q++E++G
Sbjct: 2 SLKGKVALVTGASRGIGFGIASGLAEAGANIVINSRNEEKAEEAQQLIEKEG 53
>gnl|CDD|235935 PRK07109, PRK07109, short chain dehydrogenase; Provisional.
Length = 334
Score = 37.2 bits (87), Expect = 0.002
Identities = 13/53 (24%), Positives = 25/53 (47%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
K + +++++TGA G+GR A+ F + +V E+G + G
Sbjct: 4 KPIGRQVVVITGASAGVGRATARAFARRGAKVVLLARGEEGLEALAAEIRAAG 56
>gnl|CDD|187626 cd05368, DHRS6_like_SDR_c, human DHRS6-like, classical (c) SDRs.
Human DHRS6, and similar proteins. These proteins are
classical SDRs, with a canonical active site tetrad and
a close match to the typical Gly-rich NAD-binding motif.
Human DHRS6 is a cytosolic type 2 (R)-hydroxybutyrate
dehydrogenase, which catalyses the conversion of
(R)-hydroxybutyrate to acetoacetate. Also included in
this subgroup is Escherichia coli UcpA (upstream cys P).
Classical SDRs are typically about 250 residues long,
while extended SDRs are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes catalyze a wide range of activities including
the metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction. Note: removed :
needed to make this chiodl smaller when drew final
trees: rmeoved text form description: Other proteins in
this subgroup include Thermoplasma acidophilum
aldohexose dehydrogenase, which has high dehydrogenase
activity against D-mannose, Bacillus subtilis BacC
involved in the biosynthesis of the dipeptide bacilysin
and its antibiotic moiety anticapsin, Sphingomonas
paucimobilis strain B90 LinC, involved in the
degradation of hexachlorocyclohexane isomers...... P).
Length = 241
Score = 37.1 bits (86), Expect = 0.002
Identities = 17/50 (34%), Positives = 26/50 (52%), Gaps = 5/50 (10%)
Query: 100 EGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
+G++ L+T A GIGR +A F + ++ DI NE K E+G
Sbjct: 1 DGKVALITAAAQGIGRAIALAFAREGANVIATDI-----NEEKLKELERG 45
>gnl|CDD|187648 cd08944, SDR_c12, classical (c) SDR, subgroup 12. These are
classical SDRs, with the canonical active site tetrad
and glycine-rich NAD-binding motif. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRs are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes catalyze a
wide range of activities including the metabolism of
steroids, cofactors, carbohydrates, lipids, aromatic
compounds, and amino acids, and act in redox sensing.
Classical SDRs have an TGXXX[AG]XG cofactor binding
motif and a YXXXK active site motif, with the Tyr
residue of the active site motif serving as a critical
catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 246
Score = 36.7 bits (85), Expect = 0.002
Identities = 15/36 (41%), Positives = 22/36 (61%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDID 134
LEG++ ++TGAG GIG A + + +V DID
Sbjct: 1 LEGKVAIVTGAGAGIGAACAARLAREGARVVVADID 36
>gnl|CDD|181139 PRK07832, PRK07832, short chain dehydrogenase; Provisional.
Length = 272
Score = 36.6 bits (85), Expect = 0.003
Identities = 14/45 (31%), Positives = 18/45 (40%)
Query: 105 LLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
+TGA +GIGR A + L D D G +T G
Sbjct: 4 FVTGAASGIGRATALRLAAQGAELFLTDRDADGLAQTVADARALG 48
>gnl|CDD|181335 PRK08264, PRK08264, short chain dehydrogenase; Validated.
Length = 238
Score = 36.4 bits (85), Expect = 0.003
Identities = 11/32 (34%), Positives = 19/32 (59%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLV 129
++G+++L+TGA GIGR +Q + V
Sbjct: 3 DIKGKVVLVTGANRGIGRAFVEQLLARGAAKV 34
>gnl|CDD|235853 PRK06701, PRK06701, short chain dehydrogenase; Provisional.
Length = 290
Score = 36.5 bits (85), Expect = 0.003
Identities = 23/60 (38%), Positives = 37/60 (61%), Gaps = 2/60 (3%)
Query: 95 SEKSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGN-NETKQMLEEQGYKNI 153
S K L+G++ L+TG +GIGR +A F + + +DE + NETKQ +E++G K +
Sbjct: 41 SGK-LKGKVALITGGDSGIGRAVAVLFAKEGADIAIVYLDEHEDANETKQRVEKEGVKCL 99
>gnl|CDD|180408 PRK06114, PRK06114, short chain dehydrogenase; Provisional.
Length = 254
Score = 36.3 bits (84), Expect = 0.003
Identities = 18/57 (31%), Positives = 32/57 (56%), Gaps = 1/57 (1%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDI-DEKGNNETKQMLEEQGYKNI 153
L+G++ +TGAG+GIG+ +A Q + +D+ + G ET + +E G + I
Sbjct: 5 DLDGQVAFVTGAGSGIGQRIAIGLAQAGADVALFDLRTDDGLAETAEHIEAAGRRAI 61
>gnl|CDD|187643 cd08939, KDSR-like_SDR_c, 3-ketodihydrosphingosine reductase (KDSR)
and related proteins, classical (c) SDR. These proteins
include members identified as KDSR, ribitol type
dehydrogenase, and others. The group shows strong
conservation of the active site tetrad and glycine rich
NAD-binding motif of the classical SDRs. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRs are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes catalyze a
wide range of activities including the metabolism of
steroids, cofactors, carbohydrates, lipids, aromatic
compounds, and amino acids, and act in redox sensing.
Classical SDRs have an TGXXX[AG]XG cofactor binding
motif and a YXXXK active site motif, with the Tyr
residue of the active site motif serving as a critical
catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 239
Score = 36.1 bits (84), Expect = 0.003
Identities = 16/53 (30%), Positives = 27/53 (50%), Gaps = 11/53 (20%)
Query: 101 GEIILLTGAGNGIGRELAKQFVQ--HKVTLVCWDIDEKGNNETKQMLEEQGYK 151
G+ +L+TG +GIG+ LAK+ V+ V +V ++ LEE +
Sbjct: 1 GKHVLITGGSSGIGKALAKELVKEGANVIIV---------ARSESKLEEAVEE 44
>gnl|CDD|187627 cd05369, TER_DECR_SDR_a, Trans-2-enoyl-CoA reductase (TER) and
2,4-dienoyl-CoA reductase (DECR), atypical (a) SDR.
TTER is a peroxisomal protein with a proposed role in
fatty acid elongation. Fatty acid synthesis is known to
occur in the both endoplasmic reticulum and
mitochondria; peroxisomal TER has been proposed as an
additional fatty acid elongation system, it reduces the
double bond at C-2 as the last step of elongation. This
system resembles the mitochondrial system in that
acetyl-CoA is used as a carbon donor. TER may also
function in phytol metabolism, reducting phytenoyl-CoA
to phytanoyl-CoA in peroxisomes. DECR processes double
bonds in fatty acids to increase their utility in fatty
acid metabolism; it reduces 2,4-dienoyl-CoA to an
enoyl-CoA. DECR is active in mitochondria and
peroxisomes. This subgroup has the Gly-rich NAD-binding
motif of the classical SDR family, but does not display
strong identity to the canonical active site tetrad, and
lacks the characteristic Tyr at the usual position. SDRs
are a functionally diverse family of oxidoreductases
that have a single domain with a structurally conserved
Rossmann fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRS are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes have a
3-glycine N-terminal NAD(P)(H)-binding pattern
(typically, TGxxxGxG in classical SDRs and TGxxGxxG in
extended SDRs), while substrate binding is in the
C-terminal region. A critical catalytic Tyr residue
(Tyr-151, human 15-hydroxyprostaglandin dehydrogenase
(15-PGDH) numbering), is often found in a conserved
YXXXK pattern. In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) or additional
Ser, contributing to the active site. Substrates for
these enzymes include sugars, steroids, alcohols, and
aromatic compounds. The standard reaction mechanism is a
proton relay involving the conserved Tyr and Lys, as
well as Asn (or Ser). Some SDR family members, including
17 beta-hydroxysteroid dehydrogenase contain an
additional helix-turn-helix motif that is not generally
found among SDRs.
Length = 249
Score = 36.0 bits (84), Expect = 0.003
Identities = 11/26 (42%), Positives = 18/26 (69%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQH 124
L+G++ +TG G GIG+ +AK F +
Sbjct: 1 LKGKVAFITGGGTGIGKAIAKAFAEL 26
>gnl|CDD|236099 PRK07791, PRK07791, short chain dehydrogenase; Provisional.
Length = 286
Score = 36.2 bits (84), Expect = 0.004
Identities = 15/35 (42%), Positives = 21/35 (60%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDI 133
L+G ++++TGAG GIGR A F +V DI
Sbjct: 4 LDGRVVIVTGAGGGIGRAHALAFAAEGARVVVNDI 38
>gnl|CDD|180439 PRK06171, PRK06171, sorbitol-6-phosphate 2-dehydrogenase;
Provisional.
Length = 266
Score = 36.1 bits (84), Expect = 0.004
Identities = 15/45 (33%), Positives = 27/45 (60%), Gaps = 3/45 (6%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDI---DEKGNN 139
+L+G+II++TG +GIG + K+ + + +V DI D + N
Sbjct: 6 NLQGKIIIVTGGSSGIGLAIVKELLANGANVVNADIHGGDGQHEN 50
>gnl|CDD|236209 PRK08265, PRK08265, short chain dehydrogenase; Provisional.
Length = 261
Score = 35.8 bits (83), Expect = 0.005
Identities = 11/43 (25%), Positives = 18/43 (41%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNN 139
L G++ ++TG IG +A+ V + DID
Sbjct: 2 IGLAGKVAIVTGGATLIGAAVARALVAAGARVAIVDIDADNGA 44
>gnl|CDD|187620 cd05362, THN_reductase-like_SDR_c,
tetrahydroxynaphthalene/trihydroxynaphthalene
reductase-like, classical (c) SDRs.
1,3,6,8-tetrahydroxynaphthalene reductase (4HNR) of
Magnaporthe grisea and the related
1,3,8-trihydroxynaphthalene reductase (3HNR) are typical
members of the SDR family containing the canonical
glycine rich NAD(P)-binding site and active site tetrad,
and function in fungal melanin biosynthesis. This
subgroup also includes an SDR from Norway spruce that
may function to protect against both biotic and abitoic
stress. SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRs are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes catalyze a wide range of activities including
the metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 243
Score = 35.7 bits (83), Expect = 0.005
Identities = 18/56 (32%), Positives = 29/56 (51%), Gaps = 1/56 (1%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVC-WDIDEKGNNETKQMLEEQGYKNI 153
L G++ L+TGA GIGR +AK+ + ++V + + E +E G K I
Sbjct: 1 LAGKVALVTGASRGIGRAIAKRLARDGASVVVNYASSKAAAEEVVAEIEAAGGKAI 56
>gnl|CDD|187592 cd05331, DH-DHB-DH_SDR_c, 2,3 dihydro-2,3 dihydrozybenzoate
dehydrogenases, classical (c) SDRs. 2,3 dihydro-2,3
dihydrozybenzoate dehydrogenase shares the
characteristics of the classical SDRs. This subgroup
includes Escherichai coli EntA which catalyzes the
NAD+-dependent oxidation of
2,3-dihydro-2,3-dihydroxybenzoate to
2,3-dihydroxybenzoate during biosynthesis of the
siderophore Enterobactin. SDRs are a functionally
diverse family of oxidoreductases that have a single
domain with a structurally conserved Rossmann fold
(alpha/beta folding pattern with a central beta-sheet),
an NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRs are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes catalyze a wide range of
activities including the metabolism of steroids,
cofactors, carbohydrates, lipids, aromatic compounds,
and amino acids, and act in redox sensing. Classical
SDRs have an TGXXX[AG]XG cofactor binding motif and a
YXXXK active site motif, with the Tyr residue of the
active site motif serving as a critical catalytic
residue (Tyr-151, human 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) numbering). In addition to the
Tyr and Lys, there is often an upstream Ser (Ser-138,
15-PGDH numbering) and/or an Asn (Asn-107, 15-PGDH
numbering) contributing to the active site; while
substrate binding is in the C-terminal region, which
determines specificity. The standard reaction mechanism
is a 4-pro-S hydride transfer and proton relay involving
the conserved Tyr and Lys, a water molecule stabilized
by Asn, and nicotinamide. Extended SDRs have additional
elements in the C-terminal region, and typically have a
TGXXGXXG cofactor binding motif. Complex (multidomain)
SDRs such as ketoreductase domains of fatty acid
synthase have a GGXGXXG NAD(P)-binding motif and an
altered active site motif (YXXXN). Fungal type ketoacyl
reductases have a TGXXXGX(1-2)G NAD(P)-binding motif.
Some atypical SDRs have lost catalytic activity and/or
have an unusual NAD(P)-binding motif and missing or
unusual active site residues. Reactions catalyzed within
the SDR family include isomerization, decarboxylation,
epimerization, C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 244
Score = 35.5 bits (82), Expect = 0.006
Identities = 11/29 (37%), Positives = 19/29 (65%)
Query: 104 ILLTGAGNGIGRELAKQFVQHKVTLVCWD 132
+++TGA GIGR +A+ +Q T++ D
Sbjct: 1 VIVTGAAQGIGRAVARHLLQAGATVIALD 29
>gnl|CDD|235631 PRK05866, PRK05866, short chain dehydrogenase; Provisional.
Length = 293
Score = 35.5 bits (82), Expect = 0.006
Identities = 20/43 (46%), Positives = 26/43 (60%), Gaps = 1/43 (2%)
Query: 88 LLTLIPPSEK-SLEGEIILLTGAGNGIGRELAKQFVQHKVTLV 129
LL PP + L G+ ILLTGA +GIG A+QF + T+V
Sbjct: 26 LLINRPPRQPVDLTGKRILLTGASSGIGEAAAEQFARRGATVV 68
>gnl|CDD|187662 cd09761, A3DFK9-like_SDR_c, Clostridium thermocellum A3DFK9-like, a
putative carbohydrate or polyalcohol metabolizing SDR,
classical (c) SDRs. This subgroup includes a putative
carbohydrate or polyalcohol metabolizing SDR (A3DFK9)
from Clostridium thermocellum. Its members have a
TGXXXGXG classical-SDR glycine-rich NAD-binding motif,
and some have a canonical SDR active site tetrad (A3DFK9
lacks the upstream Asn). SDRs are a functionally diverse
family of oxidoreductases that have a single domain with
a structurally conserved Rossmann fold (alpha/beta
folding pattern with a central beta-sheet), an
NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRs are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes catalyze a wide range of
activities including the metabolism of steroids,
cofactors, carbohydrates, lipids, aromatic compounds,
and amino acids, and act in redox sensing. Classical
SDRs have an TGXXX[AG]XG cofactor binding motif and a
YXXXK active site motif, with the Tyr residue of the
active site motif serving as a critical catalytic
residue (Tyr-151, human 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) numbering). In addition to the
Tyr and Lys, there is often an upstream Ser (Ser-138,
15-PGDH numbering) and/or an Asn (Asn-107, 15-PGDH
numbering) contributing to the active site; while
substrate binding is in the C-terminal region, which
determines specificity. The standard reaction mechanism
is a 4-pro-S hydride transfer and proton relay involving
the conserved Tyr and Lys, a water molecule stabilized
by Asn, and nicotinamide. Extended SDRs have additional
elements in the C-terminal region, and typically have a
TGXXGXXG cofactor binding motif. Complex (multidomain)
SDRs such as ketoreductase domains of fatty acid
synthase have a GGXGXXG NAD(P)-binding motif and an
altered active site motif (YXXXN). Fungal type ketoacyl
reductases have a TGXXXGX(1-2)G NAD(P)-binding motif.
Some atypical SDRs have lost catalytic activity and/or
have an unusual NAD(P)-binding motif and missing or
unusual active site residues. Reactions catalyzed within
the SDR family include isomerization, decarboxylation,
epimerization, C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 242
Score = 35.6 bits (82), Expect = 0.006
Identities = 13/47 (27%), Positives = 27/47 (57%)
Query: 101 GEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEE 147
G++ ++TG G+GIG+++ F++ +V DIDE+ + +
Sbjct: 1 GKVAIVTGGGHGIGKQICLDFLEAGDKVVFADIDEERGADFAEAEGP 47
>gnl|CDD|223377 COG0300, DltE, Short-chain dehydrogenases of various substrate
specificities [General function prediction only].
Length = 265
Score = 35.3 bits (82), Expect = 0.006
Identities = 14/31 (45%), Positives = 21/31 (67%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLV 129
++G+ L+TGA +GIG ELAKQ + L+
Sbjct: 4 MKGKTALITGASSGIGAELAKQLARRGYNLI 34
>gnl|CDD|187611 cd05353, hydroxyacyl-CoA-like_DH_SDR_c-like, (3R)-hydroxyacyl-CoA
dehydrogenase-like, classical(c)-like SDRs. Beta
oxidation of fatty acids in eukaryotes occurs by a
four-reaction cycle, that may take place in mitochondria
or in peroxisomes. (3R)-hydroxyacyl-CoA dehydrogenase is
part of rat peroxisomal multifunctional MFE-2, it is a
member of the NAD-dependent SDRs, but contains an
additional small C-terminal domain that completes the
active site pocket and participates in dimerization. The
atypical, additional C-terminal extension allows for
more extensive dimerization contact than other SDRs.
MFE-2 catalyzes the second and third reactions of the
peroxisomal beta oxidation cycle. Proteins in this
subgroup have a typical catalytic triad, but have a His
in place of the usual upstream Asn. This subgroup also
contains members identified as 17-beta-hydroxysteroid
dehydrogenases, including human peroxisomal
17-beta-hydroxysteroid dehydrogenase type 4 (17beta-HSD
type 4, aka MFE-2, encoded by HSD17B4 gene) which is
involved in fatty acid beta-oxidation and steroid
metabolism. This subgroup also includes two SDR domains
of the Neurospora crassa and Saccharomyces cerevisiae
multifunctional beta-oxidation protein (MFP, aka Fox2).
SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRS are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes have a 3-glycine N-terminal NAD(P)(H)-binding
pattern (typically, TGxxxGxG in classical SDRs and
TGxxGxxG in extended SDRs), while substrate binding is
in the C-terminal region. A critical catalytic Tyr
residue (Tyr-151, human 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) numbering), is often found in a
conserved YXXXK pattern. In addition to the Tyr and Lys,
there is often an upstream Ser (Ser-138, 15-PGDH
numbering) and/or an Asn (Asn-107, 15-PGDH numbering) or
additional Ser, contributing to the active site.
Substrates for these enzymes include sugars, steroids,
alcohols, and aromatic compounds. The standard reaction
mechanism is a proton relay involving the conserved Tyr
and Lys, as well as Asn (or Ser). Some SDR family
members, including 17 beta-hydroxysteroid dehydrogenase
contain an additional helix-turn-helix motif that is not
generally found among SDRs.
Length = 250
Score = 35.4 bits (82), Expect = 0.007
Identities = 13/36 (36%), Positives = 21/36 (58%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDI 133
+G ++L+TGAG G+GR A F + +V D+
Sbjct: 2 RFDGRVVLVTGAGGGLGRAYALAFAERGAKVVVNDL 37
>gnl|CDD|180723 PRK06841, PRK06841, short chain dehydrogenase; Provisional.
Length = 255
Score = 35.4 bits (82), Expect = 0.007
Identities = 11/38 (28%), Positives = 19/38 (50%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDE 135
L G++ ++TG +GIG +A+ F + D E
Sbjct: 12 DLSGKVAVVTGGASGIGHAIAELFAAKGARVALLDRSE 49
>gnl|CDD|187603 cd05345, BKR_3_SDR_c, putative beta-ketoacyl acyl carrier protein
[ACP] reductase (BKR), subgroup 3, classical (c) SDR.
This subgroup includes the putative Brucella melitensis
biovar Abortus 2308 BKR, FabG, Mesorhizobium loti
MAFF303099 FabG, and other classical SDRs. BKR, a member
of the SDR family, catalyzes the NADPH-dependent
reduction of acyl carrier protein in the first reductive
step of de novo fatty acid synthesis (FAS). FAS
consists of 4 elongation steps, which are repeated to
extend the fatty acid chain thru the addition of
two-carbo units from malonyl acyl-carrier protein (ACP):
condensation, reduction, dehydration, and final
reduction. Type II FAS, typical of plants and many
bacteria, maintains these activities on discrete
polypeptides, while type I Fas utilizes one or 2
multifunctional polypeptides. BKR resembles enoyl
reductase, which catalyzes the second reduction step in
FAS. SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRS are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes have a 3-glycine N-terminal NAD(P)(H)-binding
pattern (typically, TGxxxGxG in classical SDRs and
TGxxGxxG in extended SDRs), while substrate binding is
in the C-terminal region. A critical catalytic Tyr
residue (Tyr-151, human 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) numbering), is often found in a
conserved YXXXK pattern. In addition to the Tyr and Lys,
there is often an upstream Ser (Ser-138, 15-PGDH
numbering) and/or an Asn (Asn-107, 15-PGDH numbering) or
additional Ser, contributing to the active site.
Substrates for these enzymes include sugars, steroids,
alcohols, and aromatic compounds. The standard reaction
mechanism is a proton relay involving the conserved Tyr
and Lys, as well as Asn (or Ser). Some SDR family
members, including 17 beta-hydroxysteroid dehydrogenase
contain an additional helix-turn-helix motif that is not
generally found among SDRs.
Length = 248
Score = 35.1 bits (81), Expect = 0.007
Identities = 16/40 (40%), Positives = 26/40 (65%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKG 137
LEG++ ++TGAG+G G +A++F Q +V DI+ G
Sbjct: 2 RLEGKVAIVTGAGSGFGEGIARRFAQEGARVVIADINADG 41
>gnl|CDD|187609 cd05351, XR_like_SDR_c, xylulose reductase-like, classical (c)
SDRs. Members of this subgroup include proteins
identified as L-xylulose reductase (XR) and carbonyl
reductase; they are members of the SDR family. XR,
catalyzes the NADP-dependent reduction of L-xyulose and
other sugars. Tetrameric mouse carbonyl reductase is
involved in the metabolism of biogenic and xenobiotic
carbonyl compounds. This subgroup also includes
tetrameric chicken liver D-erythrulose reductase, which
catalyzes the reduction of D-erythrulose to D-threitol.
SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRS are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes have a 3-glycine N-terminal NAD(P)(H)-binding
pattern (typically, TGxxxGxG in classical SDRs and
TGxxGxxG in extended SDRs), while substrate binding is
in the C-terminal region. A critical catalytic Tyr
residue (Tyr-151, human 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) numbering), is often found in a
conserved YXXXK pattern. In addition to the Tyr and Lys,
there is often an upstream Ser (Ser-138, 15-PGDH
numbering) and/or an Asn (Asn-107, 15-PGDH numbering) or
additional Ser, contributing to the active site.
Substrates for these enzymes include sugars, steroids,
alcohols, and aromatic compounds. The standard reaction
mechanism is a proton relay involving the conserved Tyr
and Lys, as well as Asn (or Ser).
Length = 244
Score = 35.1 bits (81), Expect = 0.007
Identities = 12/25 (48%), Positives = 14/25 (56%)
Query: 96 EKSLEGEIILLTGAGNGIGRELAKQ 120
E G+ L+TGAG GIGR K
Sbjct: 2 ELDFAGKRALVTGAGKGIGRATVKA 26
>gnl|CDD|187618 cd05360, SDR_c3, classical (c) SDR, subgroup 3. These proteins are
members of the classical SDR family, with a canonical
active site triad (and also active site Asn) and a
typical Gly-rich NAD-binding motif. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRS are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes have a
3-glycine N-terminal NAD(P)(H)-binding pattern
(typically, TGxxxGxG in classical SDRs and TGxxGxxG in
extended SDRs), while substrate binding is in the
C-terminal region. A critical catalytic Tyr residue
(Tyr-151, human 15-hydroxyprostaglandin dehydrogenase
(15-PGDH) numbering), is often found in a conserved
YXXXK pattern. In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) or additional
Ser, contributing to the active site. Substrates for
these enzymes include sugars, steroids, alcohols, and
aromatic compounds. The standard reaction mechanism is a
proton relay involving the conserved Tyr and Lys, as
well as Asn (or Ser). Some SDR family members, including
17 beta-hydroxysteroid dehydrogenase contain an
additional helix-turn-helix motif that is not generally
found among SDRs.
Length = 233
Score = 35.1 bits (81), Expect = 0.008
Identities = 14/51 (27%), Positives = 26/51 (50%)
Query: 103 IILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYKNI 153
++++TGA +GIGR A F + +V + +E + + E G + I
Sbjct: 2 VVVITGASSGIGRATALAFAERGAKVVLAARSAEALHELAREVRELGGEAI 52
>gnl|CDD|132368 TIGR03325, BphB_TodD, cis-2,3-dihydrobiphenyl-2,3-diol
dehydrogenase. Members of this family occur as the BphD
protein of biphenyl catabolism and as the TodD protein
of toluene catabolism. Members catalyze the second step
in each pathway and proved interchangeable when tested;
the first and fourth enzymes in each pathway confer
metabolic specificity. In the context of biphenyl
degradation, the enzyme acts as
cis-2,3-dihydrobiphenyl-2,3-diol dehydrogenase (EC
1.3.1.56), while in toluene degradation it acts as
cis-toluene dihydrodiol dehydrogenase.
Length = 262
Score = 34.8 bits (80), Expect = 0.010
Identities = 14/46 (30%), Positives = 24/46 (52%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQM 144
L+GE++L+TG +G+GR + +FV + D G E +
Sbjct: 3 LKGEVVLVTGGASGLGRAIVDRFVAEGARVAVLDKSAAGLQELEAA 48
>gnl|CDD|187593 cd05332, 11beta-HSD1_like_SDR_c, 11beta-hydroxysteroid
dehydrogenase type 1 (11beta-HSD1)-like, classical (c)
SDRs. Human 11beta_HSD1 catalyzes the NADP(H)-dependent
interconversion of cortisone and cortisol. This subgroup
also includes human dehydrogenase/reductase SDR family
member 7C (DHRS7C) and DHRS7B. These proteins have the
GxxxGxG nucleotide binding motif and S-Y-K catalytic
triad characteristic of the SDRs, but have an atypical
C-terminal domain that contributes to homodimerization
contacts. SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRs are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes catalyze a wide range of activities including
the metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 257
Score = 34.5 bits (80), Expect = 0.012
Identities = 11/23 (47%), Positives = 18/23 (78%)
Query: 99 LEGEIILLTGAGNGIGRELAKQF 121
L+G+++++TGA +GIG ELA
Sbjct: 1 LQGKVVIITGASSGIGEELAYHL 23
>gnl|CDD|187640 cd08935, mannonate_red_SDR_c, putative D-mannonate oxidoreductase,
classical (c) SDR. D-mannonate oxidoreductase catalyzes
the NAD-dependent interconversion of D-mannonate and
D-fructuronate. This subgroup includes Bacillus
subtitils UxuB/YjmF, a putative D-mannonate
oxidoreductase; the B. subtilis UxuB gene is part of a
putative ten-gene operon (the Yjm operon) involved in
hexuronate catabolism. Escherichia coli UxuB does not
belong to this subgroup. This subgroup has a canonical
active site tetrad and a typical Gly-rich NAD-binding
motif. SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRs are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes catalyze a wide range of activities including
the metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 271
Score = 34.7 bits (80), Expect = 0.012
Identities = 11/48 (22%), Positives = 24/48 (50%), Gaps = 1/48 (2%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDID-EKGNNETKQM 144
SL+ ++ ++TG +G +A+ Q + + EKG+ K++
Sbjct: 2 SLKNKVAVITGGTGVLGGAMARALAQAGAKVAALGRNQEKGDKVAKEI 49
>gnl|CDD|187625 cd05367, SPR-like_SDR_c, sepiapterin reductase (SPR)-like,
classical (c) SDRs. Human SPR, a member of the SDR
family, catalyzes the NADP-dependent reduction of
sepiaptern to 7,8-dihydrobiopterin (BH2). In addition to
SPRs, this subgroup also contains Bacillus cereus yueD,
a benzil reductase, which catalyzes the stereospecific
reduction of benzil to (S)-benzoin. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRs are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes catalyze a
wide range of activities including the metabolism of
steroids, cofactors, carbohydrates, lipids, aromatic
compounds, and amino acids, and act in redox sensing.
Classical SDRs have an TGXXX[AG]XG cofactor binding
motif and a YXXXK active site motif, with the Tyr
residue of the active site motif serving as a critical
catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 241
Score = 34.6 bits (80), Expect = 0.013
Identities = 18/56 (32%), Positives = 27/56 (48%), Gaps = 4/56 (7%)
Query: 104 ILLTGAGNGIGRELAKQFVQ--HKVTLVCWDIDEKGNNETKQMLEEQGYKNIHTYK 157
I+LTGA GIGR LA++ ++ +V E+ E K E + + T K
Sbjct: 2 IILTGASRGIGRALAEELLKRGSPSVVVLLARSEEPLQELK--EELRPGLRVTTVK 55
>gnl|CDD|188170 TIGR01832, kduD, 2-deoxy-D-gluconate 3-dehydrogenase. This model
describes 2-deoxy-D-gluconate 3-dehydrogenase (also
called 2-keto-3-deoxygluconate oxidoreductase), a member
of the family of short-chain-alcohol dehydrogenases
(pfam00106). This protein has been characterized in
Erwinia chrysanthemi as an enzyme of pectin degradation
[Energy metabolism, Biosynthesis and degradation of
polysaccharides].
Length = 248
Score = 34.3 bits (79), Expect = 0.013
Identities = 18/54 (33%), Positives = 30/54 (55%), Gaps = 2/54 (3%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYK 151
SLEG++ L+TGA G+G+ +A + +V E +ET+Q +E G +
Sbjct: 2 SLEGKVALVTGANTGLGQGIAVGLAEAGADIVGAGRSEP--SETQQQVEALGRR 53
>gnl|CDD|187610 cd05352, MDH-like_SDR_c, mannitol dehydrogenase (MDH)-like,
classical (c) SDRs. NADP-mannitol dehydrogenase
catalyzes the conversion of fructose to mannitol, an
acyclic 6-carbon sugar. MDH is a tetrameric member of
the SDR family. This subgroup also includes various
other tetrameric SDRs, including Pichia stipitis
D-arabinitol dehydrogenase (aka polyol dehydrogenase),
Candida albicans Sou1p, a sorbose reductase, and Candida
parapsilosis (S)-specific carbonyl reductase (SCR, aka
S-specific alcohol dehydrogenase) which catalyzes the
enantioselective reduction of 2-hydroxyacetophenone into
(S)-1-phenyl-1,2-ethanediol. SDRs are a functionally
diverse family of oxidoreductases that have a single
domain with a structurally conserved Rossmann fold
(alpha/beta folding pattern with a central beta-sheet),
an NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRS are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes have a 3-glycine N-terminal
NAD(P)(H)-binding pattern (typically, TGxxxGxG in
classical SDRs and TGxxGxxG in extended SDRs), while
substrate binding is in the C-terminal region. A
critical catalytic Tyr residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering), is often found in a conserved YXXXK pattern.
In addition to the Tyr and Lys, there is often an
upstream Ser (Ser-138, 15-PGDH numbering) and/or an Asn
(Asn-107, 15-PGDH numbering) or additional Ser,
contributing to the active site. Substrates for these
enzymes include sugars, steroids, alcohols, and aromatic
compounds. The standard reaction mechanism is a proton
relay involving the conserved Tyr and Lys, as well as
Asn (or Ser).
Length = 252
Score = 34.2 bits (79), Expect = 0.017
Identities = 13/61 (21%), Positives = 29/61 (47%), Gaps = 2/61 (3%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWD-IDEKGNNETKQMLEEQGYKNIHTY 156
SL+G++ ++TG GIG +A+ + + + + +++ ++ G K Y
Sbjct: 5 SLKGKVAIVTGGSRGIGLAIARALAEAGADVAIIYNSAPRAEEKAEELAKKYGVK-TKAY 63
Query: 157 K 157
K
Sbjct: 64 K 64
>gnl|CDD|187642 cd08937, DHB_DH-like_SDR_c,
1,6-dihydroxycyclohexa-2,4-diene-1-carboxylate
dehydrogenase (DHB DH)-like, classical (c) SDR. DHB DH
(aka 1,2-dihydroxycyclohexa-3,5-diene-1-carboxylate
dehydrogenase) catalyzes the NAD-dependent conversion of
1,2-dihydroxycyclohexa-3,4-diene carboxylate to a
catechol. This subgroup also contains Pseudomonas putida
F1 CmtB, 2,3-dihydroxy-2,3-dihydro-p-cumate
dehydrogenase, the second enzyme in the pathway for
catabolism of p-cumate catabolism. This subgroup shares
the glycine-rich NAD-binding motif of the classical SDRs
and shares the same catalytic triad; however, the
upstream Asn implicated in cofactor binding or catalysis
in other SDRs is generally substituted by a Ser. SDRs
are a functionally diverse family of oxidoreductases
that have a single domain with a structurally conserved
Rossmann fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRs are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes catalyze a
wide range of activities including the metabolism of
steroids, cofactors, carbohydrates, lipids, aromatic
compounds, and amino acids, and act in redox sensing.
Classical SDRs have an TGXXX[AG]XG cofactor binding
motif and a YXXXK active site motif, with the Tyr
residue of the active site motif serving as a critical
catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 256
Score = 34.0 bits (78), Expect = 0.019
Identities = 15/57 (26%), Positives = 30/57 (52%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYKNIHT 155
EG+++++TGA GIGR +A++ ++ D E + ++L ++HT
Sbjct: 2 FEGKVVVVTGAAQGIGRGVAERLAGEGARVLLVDRSELVHEVLAEILAAGDAAHVHT 58
>gnl|CDD|215720 pfam00106, adh_short, short chain dehydrogenase. This family
contains a wide variety of dehydrogenases.
Length = 167
Score = 33.7 bits (78), Expect = 0.019
Identities = 14/50 (28%), Positives = 19/50 (38%), Gaps = 3/50 (6%)
Query: 103 IILLTGAGNGIGRELAKQFVQH---KVTLVCWDIDEKGNNETKQMLEEQG 149
+L+TG G+G LA+ + LV G E LE G
Sbjct: 2 TVLITGGTGGLGLALARWLAAEGARHLVLVSRRGPAPGAAELVAELEALG 51
>gnl|CDD|224011 COG1086, COG1086, Predicted nucleoside-diphosphate sugar epimerases
[Cell envelope biogenesis, outer membrane / Carbohydrate
transport and metabolism].
Length = 588
Score = 34.2 bits (79), Expect = 0.020
Identities = 13/40 (32%), Positives = 22/40 (55%), Gaps = 1/40 (2%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKV-TLVCWDIDEKG 137
L G+ +L+TG G IG EL +Q ++ ++ + DE
Sbjct: 248 LTGKTVLVTGGGGSIGSELCRQILKFNPKEIILFSRDEYK 287
>gnl|CDD|184025 PRK13394, PRK13394, 3-hydroxybutyrate dehydrogenase; Provisional.
Length = 262
Score = 33.7 bits (77), Expect = 0.022
Identities = 16/57 (28%), Positives = 31/57 (54%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYKNIH 154
+L G+ ++TGA +GIG+E+A + + + D+++ G N + + G K I
Sbjct: 4 NLNGKTAVVTGAASGIGKEIALELARAGAAVAIADLNQDGANAVADEINKAGGKAIG 60
>gnl|CDD|236074 PRK07666, fabG, 3-ketoacyl-(acyl-carrier-protein) reductase;
Provisional.
Length = 239
Score = 33.9 bits (78), Expect = 0.023
Identities = 14/31 (45%), Positives = 20/31 (64%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTL 128
SL+G+ L+TGAG GIGR +A + V +
Sbjct: 4 SLQGKNALITGAGRGIGRAVAIALAKEGVNV 34
>gnl|CDD|236207 PRK08261, fabG, 3-ketoacyl-(acyl-carrier-protein) reductase;
Provisional.
Length = 450
Score = 34.0 bits (79), Expect = 0.025
Identities = 13/38 (34%), Positives = 23/38 (60%)
Query: 96 EKSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDI 133
++ L G++ L+TGA GIG +A+ + +VC D+
Sbjct: 205 DRPLAGKVALVTGAARGIGAAIAEVLARDGAHVVCLDV 242
>gnl|CDD|187600 cd05341, 3beta-17beta-HSD_like_SDR_c, 3beta17beta hydroxysteroid
dehydrogenase-like, classical (c) SDRs. This subgroup
includes members identified as 3beta17beta
hydroxysteroid dehydrogenase, 20beta hydroxysteroid
dehydrogenase, and R-alcohol dehydrogenase. These
proteins exhibit the canonical active site tetrad and
glycine rich NAD(P)-binding motif of the classical SDRs.
17beta-dehydrogenases are a group of isozymes that
catalyze activation and inactivation of estrogen and
androgens, and include members of the SDR family. SDRs
are a functionally diverse family of oxidoreductases
that have a single domain with a structurally conserved
Rossmann fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRS are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes have a
3-glycine N-terminal NAD(P)(H)-binding pattern
(typically, TGxxxGxG in classical SDRs and TGxxGxxG in
extended SDRs), while substrate binding is in the
C-terminal region. A critical catalytic Tyr residue
(Tyr-151, human 15-hydroxyprostaglandin dehydrogenase
(15-PGDH) numbering), is often found in a conserved
YXXXK pattern. In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) or additional
Ser, contributing to the active site. Substrates for
these enzymes include sugars, steroids, alcohols, and
aromatic compounds. The standard reaction mechanism is a
proton relay involving the conserved Tyr and Lys, as
well as Asn (or Ser). Some SDR family members, including
17 beta-hydroxysteroid dehydrogenase contain an
additional helix-turn-helix motif that is not generally
found among SDRs.
Length = 247
Score = 33.5 bits (77), Expect = 0.026
Identities = 12/52 (23%), Positives = 23/52 (44%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQ 148
L+G++ ++TG G+G A+ V +V DI ++ L +
Sbjct: 1 NRLKGKVAIVTGGARGLGLAHARLLVAEGAKVVLSDILDEEGQAAAAELGDA 52
>gnl|CDD|180399 PRK06101, PRK06101, short chain dehydrogenase; Provisional.
Length = 240
Score = 33.3 bits (76), Expect = 0.029
Identities = 15/54 (27%), Positives = 25/54 (46%), Gaps = 5/54 (9%)
Query: 104 ILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYKNIHTYK 157
+L+TGA +GIG++LA + + W + G N++ NI T
Sbjct: 4 VLITGATSGIGKQLALDYAKQG-----WQVIACGRNQSVLDELHTQSANIFTLA 52
>gnl|CDD|217199 pfam02719, Polysacc_synt_2, Polysaccharide biosynthesis protein.
This is a family of diverse bacterial polysaccharide
biosynthesis proteins including the CapD protein, WalL
protein mannosyl-transferase and several putative
epimerases (e.g. WbiI).
Length = 280
Score = 33.6 bits (78), Expect = 0.029
Identities = 11/34 (32%), Positives = 19/34 (55%), Gaps = 1/34 (2%)
Query: 104 ILLTGAGNGIGRELAKQFVQHKV-TLVCWDIDEK 136
+L+TG G IG EL +Q ++ ++ + DE
Sbjct: 1 VLVTGGGGSIGSELCRQILKFNPKKIILFSRDEF 34
>gnl|CDD|235794 PRK06398, PRK06398, aldose dehydrogenase; Validated.
Length = 258
Score = 33.3 bits (76), Expect = 0.031
Identities = 10/44 (22%), Positives = 23/44 (52%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETK 142
L+ ++ ++TG GIG+ + + + ++ +DI E N+
Sbjct: 4 LKDKVAIVTGGSQGIGKAVVNRLKEEGSNVINFDIKEPSYNDVD 47
>gnl|CDD|187548 cd05237, UDP_invert_4-6DH_SDR_e, UDP-Glcnac (UDP-linked
N-acetylglucosamine) inverting 4,6-dehydratase, extended
(e) SDRs. UDP-Glcnac inverting 4,6-dehydratase was
identified in Helicobacter pylori as the hexameric flaA1
gene product (FlaA1). FlaA1 is hexameric, possesses
UDP-GlcNAc-inverting 4,6-dehydratase activity, and
catalyzes the first step in the creation of a
pseudaminic acid derivative in protein glycosylation.
Although this subgroup has the NADP-binding motif
characteristic of extended SDRs, its members tend to
have a Met substituted for the active site Tyr found in
most SDR families. Extended SDRs are distinct from
classical SDRs. In addition to the Rossmann fold
(alpha/beta folding pattern with a central beta-sheet)
core region typical of all SDRs, extended SDRs have a
less conserved C-terminal extension of approximately 100
amino acids. Extended SDRs are a diverse collection of
proteins, and include isomerases, epimerases,
oxidoreductases, and lyases; they typically have a
TGXXGXXG cofactor binding motif. SDRs are a functionally
diverse family of oxidoreductases that have a single
domain with a structurally conserved Rossmann fold, an
NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Sequence identity between different
SDR enzymes is typically in the 15-30% range; they
catalyze a wide range of activities including the
metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase numbering). In
addition to the Tyr and Lys, there is often an upstream
Ser and/or an Asn, contributing to the active site;
while substrate binding is in the C-terminal region,
which determines specificity. The standard reaction
mechanism is a 4-pro-S hydride transfer and proton relay
involving the conserved Tyr and Lys, a water molecule
stabilized by Asn, and nicotinamide. Atypical SDRs
generally lack the catalytic residues characteristic of
the SDRs, and their glycine-rich NAD(P)-binding motif is
often different from the forms normally seen in
classical or extended SDRs. Complex (multidomain) SDRs
such as ketoreductase domains of fatty acid synthase
have a GGXGXXG NAD(P)-binding motif and an altered
active site motif (YXXXN). Fungal type ketoacyl
reductases have a TGXXXGX(1-2)G NAD(P)-binding motif.
Length = 287
Score = 33.4 bits (77), Expect = 0.033
Identities = 16/59 (27%), Positives = 28/59 (47%), Gaps = 2/59 (3%)
Query: 100 EGEIILLTGAGNGIGRELAKQFVQ-HKVTLVCWDIDEKGNNETKQMLEEQGYK-NIHTY 156
+G+ IL+TG IG EL +Q ++ L+ +D DE +E + L + +
Sbjct: 1 KGKTILVTGGAGSIGSELVRQILKFGPKKLIVFDRDENKLHELVRELRSRFPHDKLRFI 59
>gnl|CDD|180823 PRK07074, PRK07074, short chain dehydrogenase; Provisional.
Length = 257
Score = 33.2 bits (76), Expect = 0.034
Identities = 14/34 (41%), Positives = 19/34 (55%), Gaps = 2/34 (5%)
Query: 103 IILLTGAGNGIGRELAKQFV-QHKVTLVCWDIDE 135
L+TGA GIG+ LA++F+ L DID
Sbjct: 4 TALVTGAAGGIGQALARRFLAAGDRVLAL-DIDA 36
>gnl|CDD|235693 PRK06077, fabG, 3-ketoacyl-(acyl-carrier-protein) reductase;
Provisional.
Length = 252
Score = 33.2 bits (76), Expect = 0.035
Identities = 18/56 (32%), Positives = 34/56 (60%), Gaps = 7/56 (12%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGN----NETKQMLEEQG 149
SL+ +++++TG+G GIGR +A + + +V ++ K NET +M++E G
Sbjct: 3 SLKDKVVVVTGSGRGIGRAIAVRLAKEGSLVV---VNAKKRAEEMNETLKMVKENG 55
>gnl|CDD|187632 cd05374, 17beta-HSD-like_SDR_c, 17beta hydroxysteroid
dehydrogenase-like, classical (c) SDRs.
17beta-hydroxysteroid dehydrogenases are a group of
isozymes that catalyze activation and inactivation of
estrogen and androgens. SDRs are a functionally diverse
family of oxidoreductases that have a single domain with
a structurally conserved Rossmann fold (alpha/beta
folding pattern with a central beta-sheet), an
NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRs are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes catalyze a wide range of
activities including the metabolism of steroids,
cofactors, carbohydrates, lipids, aromatic compounds,
and amino acids, and act in redox sensing. Classical
SDRs have an TGXXX[AG]XG cofactor binding motif and a
YXXXK active site motif, with the Tyr residue of the
active site motif serving as a critical catalytic
residue (Tyr-151, human 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) numbering). In addition to the
Tyr and Lys, there is often an upstream Ser (Ser-138,
15-PGDH numbering) and/or an Asn (Asn-107, 15-PGDH
numbering) contributing to the active site; while
substrate binding is in the C-terminal region, which
determines specificity. The standard reaction mechanism
is a 4-pro-S hydride transfer and proton relay involving
the conserved Tyr and Lys, a water molecule stabilized
by Asn, and nicotinamide. Extended SDRs have additional
elements in the C-terminal region, and typically have a
TGXXGXXG cofactor binding motif. Complex (multidomain)
SDRs such as ketoreductase domains of fatty acid
synthase have a GGXGXXG NAD(P)-binding motif and an
altered active site motif (YXXXN). Fungal type ketoacyl
reductases have a TGXXXGX(1-2)G NAD(P)-binding motif.
Some atypical SDRs have lost catalytic activity and/or
have an unusual NAD(P)-binding motif and missing or
unusual active site residues. Reactions catalyzed within
the SDR family include isomerization, decarboxylation,
epimerization, C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 248
Score = 33.0 bits (76), Expect = 0.038
Identities = 8/19 (42%), Positives = 12/19 (63%)
Query: 103 IILLTGAGNGIGRELAKQF 121
++L+TG +GIG LA
Sbjct: 2 VVLITGCSSGIGLALALAL 20
>gnl|CDD|183773 PRK12824, PRK12824, acetoacetyl-CoA reductase; Provisional.
Length = 245
Score = 33.2 bits (76), Expect = 0.038
Identities = 15/49 (30%), Positives = 25/49 (51%), Gaps = 2/49 (4%)
Query: 102 EIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGY 150
+I L+TGA GIG +A++ + ++ GN+ K EE G+
Sbjct: 3 KIALVTGAKRGIGSAIARELLNDGYRVIA--TYFSGNDCAKDWFEEYGF 49
>gnl|CDD|187617 cd05359, ChcA_like_SDR_c, 1-cyclohexenylcarbonyl_coenzyme
A_reductase (ChcA)_like, classical (c) SDRs. This
subgroup contains classical SDR proteins, including
members identified as 1-cyclohexenylcarbonyl coenzyme A
reductase. ChcA of Streptomyces collinus is implicated
in the final reduction step of shikimic acid to
ansatrienin. ChcA shows sequence similarity to the SDR
family of NAD-binding proteins, but it lacks the
conserved Tyr of the characteristic catalytic site. This
subgroup also contains the NADH-dependent
enoyl-[acyl-carrier-protein(ACP)] reductase FabL from
Bacillus subtilis. This enzyme participates in bacterial
fatty acid synthesis, in type II fatty-acid synthases
and catalyzes the last step in each elongation cycle.
SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRS are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes have a 3-glycine N-terminal NAD(P)(H)-binding
pattern (typically, TGxxxGxG in classical SDRs and
TGxxGxxG in extended SDRs), while substrate binding is
in the C-terminal region. A critical catalytic Tyr
residue (Tyr-151, human 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) numbering), is often found in a
conserved YXXXK pattern. In addition to the Tyr and Lys,
there is often an upstream Ser (Ser-138, 15-PGDH
numbering) and/or an Asn (Asn-107, 15-PGDH numbering) or
additional Ser, contributing to the active site.
Substrates for these enzymes include sugars, steroids,
alcohols, and aromatic compounds. The standard reaction
mechanism is a proton relay involving the conserved Tyr
and Lys, as well as Asn (or Ser). Some SDR family
members, including 17 beta-hydroxysteroid dehydrogenase
contain an additional helix-turn-helix motif that is not
generally found among SDRs.
Length = 242
Score = 33.1 bits (76), Expect = 0.040
Identities = 12/46 (26%), Positives = 21/46 (45%), Gaps = 1/46 (2%)
Query: 105 LLTGAGNGIGRELAKQFVQHKVTLVC-WDIDEKGNNETKQMLEEQG 149
L+TG GIG+ +A + + +V + + E +EE G
Sbjct: 2 LVTGGSRGIGKAIALRLAERGADVVINYRKSKDAAAEVAAEIEELG 47
>gnl|CDD|187638 cd08933, RDH_SDR_c, retinal dehydrogenase-like, classical (c) SDR.
These classical SDRs includes members identified as
retinol dehydrogenases, which convert retinol to
retinal, a property that overlaps with 17betaHSD
activity. 17beta-dehydrogenases are a group of isozymes
that catalyze activation and inactivation of estrogen
and androgens, and include members of the short-chain
dehydrogenases/reductase family. SDRs are a functionally
diverse family of oxidoreductases that have a single
domain with a structurally conserved Rossmann fold
(alpha/beta folding pattern with a central beta-sheet),
an NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRs are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes catalyze a wide range of
activities including the metabolism of steroids,
cofactors, carbohydrates, lipids, aromatic compounds,
and amino acids, and act in redox sensing. Classical
SDRs have an TGXXX[AG]XG cofactor binding motif and a
YXXXK active site motif, with the Tyr residue of the
active site motif serving as a critical catalytic
residue (Tyr-151, human 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) numbering). In addition to the
Tyr and Lys, there is often an upstream Ser (Ser-138,
15-PGDH numbering) and/or an Asn (Asn-107, 15-PGDH
numbering) contributing to the active site; while
substrate binding is in the C-terminal region, which
determines specificity. The standard reaction mechanism
is a 4-pro-S hydride transfer and proton relay involving
the conserved Tyr and Lys, a water molecule stabilized
by Asn, and nicotinamide. Extended SDRs have additional
elements in the C-terminal region, and typically have a
TGXXGXXG cofactor binding motif. Complex (multidomain)
SDRs such as ketoreductase domains of fatty acid
synthase have a GGXGXXG NAD(P)-binding motif and an
altered active site motif (YXXXN). Fungal type ketoacyl
reductases have a TGXXXGX(1-2)G NAD(P)-binding motif.
Some atypical SDRs have lost catalytic activity and/or
have an unusual NAD(P)-binding motif and missing or
unusual active site residues. Reactions catalyzed within
the SDR family include isomerization, decarboxylation,
epimerization, C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 261
Score = 32.9 bits (75), Expect = 0.042
Identities = 12/49 (24%), Positives = 23/49 (46%)
Query: 101 GEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
+++++TG GIGR + + FV++ +V E + L G
Sbjct: 9 DKVVIVTGGSRGIGRGIVRAFVENGAKVVFCARGEAAGQALESELNRAG 57
>gnl|CDD|235713 PRK06139, PRK06139, short chain dehydrogenase; Provisional.
Length = 330
Score = 33.2 bits (76), Expect = 0.042
Identities = 12/33 (36%), Positives = 20/33 (60%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQHKVTLV 129
L G ++++TGA +GIG+ A+ F + LV
Sbjct: 3 GPLHGAVVVITGASSGIGQATAEAFARRGARLV 35
>gnl|CDD|187590 cd05329, TR_SDR_c, tropinone reductase-I and II (TR-1, and
TR-II)-like, classical (c) SDRs. This subgroup includes
TR-I and TR-II; these proteins are members of the SDR
family. TRs catalyze the NADPH-dependent reductions of
the 3-carbonyl group of tropinone, to a beta-hydroxyl
group. TR-I and TR-II produce different stereoisomers
from tropinone, TR-I produces tropine
(3alpha-hydroxytropane), and TR-II, produces
pseudotropine (sigma-tropine, 3beta-hydroxytropane).
SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRs are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes catalyze a wide range of activities including
the metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 251
Score = 32.8 bits (75), Expect = 0.042
Identities = 14/54 (25%), Positives = 26/54 (48%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYK 151
+LEG+ L+TG GIG + ++ + ++K +E E+G+K
Sbjct: 3 NLEGKTALVTGGTKGIGYAIVEELAGLGAEVYTCARNQKELDECLTEWREKGFK 56
>gnl|CDD|235702 PRK06124, PRK06124, gluconate 5-dehydrogenase; Provisional.
Length = 256
Score = 33.1 bits (76), Expect = 0.043
Identities = 10/22 (45%), Positives = 17/22 (77%)
Query: 98 SLEGEIILLTGAGNGIGRELAK 119
SL G++ L+TG+ G+G E+A+
Sbjct: 8 SLAGQVALVTGSARGLGFEIAR 29
>gnl|CDD|187623 cd05365, 7_alpha_HSDH_SDR_c, 7 alpha-hydroxysteroid dehydrogenase
(7 alpha-HSDH), classical (c) SDRs. This bacterial
subgroup contains 7 alpha-HSDHs, including Escherichia
coli 7 alpha-HSDH. 7 alpha-HSDH, a member of the SDR
family, catalyzes the NAD+ -dependent dehydrogenation of
a hydroxyl group at position 7 of the steroid skeleton
of bile acids. In humans the two primary bile acids are
cholic and chenodeoxycholic acids, these are formed from
cholesterol in the liver. Escherichia coli 7 alpha-HSDH
dehydroxylates these bile acids in the human intestine.
Mammalian 7 alpha-HSDH activity has been found in
livers. SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRS are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes have a 3-glycine N-terminal NAD(P)(H)-binding
pattern (typically, TGxxxGxG in classical SDRs and
TGxxGxxG in extended SDRs), while substrate binding is
in the C-terminal region. A critical catalytic Tyr
residue (Tyr-151, human 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) numbering), is often found in a
conserved YXXXK pattern. In addition to the Tyr and Lys,
there is often an upstream Ser (Ser-138, 15-PGDH
numbering) and/or an Asn (Asn-107, 15-PGDH numbering) or
additional Ser, contributing to the active site.
Substrates for these enzymes include sugars, steroids,
alcohols, and aromatic compounds. The standard reaction
mechanism is a proton relay involving the conserved Tyr
and Lys, as well as Asn (or Ser). Some SDR family
members, including 17 beta-hydroxysteroid dehydrogenase
contain an additional helix-turn-helix motif that is not
generally found among SDRs.
Length = 242
Score = 32.9 bits (75), Expect = 0.043
Identities = 10/47 (21%), Positives = 23/47 (48%)
Query: 103 IILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
+ ++TG GIG+ +A + ++V D+ +G +++ G
Sbjct: 1 VAIVTGGAAGIGKAIAGTLAKAGASVVIADLKSEGAEAVAAAIQQAG 47
>gnl|CDD|180817 PRK07060, PRK07060, short chain dehydrogenase; Provisional.
Length = 245
Score = 32.8 bits (75), Expect = 0.047
Identities = 12/34 (35%), Positives = 18/34 (52%)
Query: 101 GEIILLTGAGNGIGRELAKQFVQHKVTLVCWDID 134
G+ +L+TGA +GIGR A Q +V +
Sbjct: 9 GKSVLVTGASSGIGRACAVALAQRGARVVAAARN 42
>gnl|CDD|187622 cd05364, SDR_c11, classical (c) SDR, subgroup 11. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRs are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes catalyze a
wide range of activities including the metabolism of
steroids, cofactors, carbohydrates, lipids, aromatic
compounds, and amino acids, and act in redox sensing.
Classical SDRs have an TGXXX[AG]XG cofactor binding
motif and a YXXXK active site motif, with the Tyr
residue of the active site motif serving as a critical
catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 253
Score = 32.8 bits (75), Expect = 0.047
Identities = 15/51 (29%), Positives = 25/51 (49%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
L G++ ++TG+ +GIG A F + L D + ET+Q + G
Sbjct: 1 LSGKVAIITGSSSGIGAGTAILFARLGARLALTGRDAERLEETRQSCLQAG 51
>gnl|CDD|183778 PRK12829, PRK12829, short chain dehydrogenase; Provisional.
Length = 264
Score = 32.7 bits (75), Expect = 0.053
Identities = 16/51 (31%), Positives = 25/51 (49%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEE 147
K L+G +L+TG +GIGR +A+ F + + D+ E T L
Sbjct: 7 KPLDGLRVLVTGGASGIGRAIAEAFAEAGARVHVCDVSEAALAATAARLPG 57
>gnl|CDD|187537 cd05226, SDR_e_a, Extended (e) and atypical (a) SDRs. Extended or
atypical short-chain dehydrogenases/reductases (SDRs,
aka tyrosine-dependent oxidoreductases) are distinct
from classical SDRs. In addition to the Rossmann fold
(alpha/beta folding pattern with a central beta-sheet)
core region typical of all SDRs, extended SDRs have a
less conserved C-terminal extension of approximately 100
amino acids. Extended SDRs are a diverse collection of
proteins, and include isomerases, epimerases,
oxidoreductases, and lyases; they typically have a
TGXXGXXG cofactor binding motif. Atypical SDRs generally
lack the catalytic residues characteristic of the SDRs,
and their glycine-rich NAD(P)-binding motif is often
different from the forms normally seen in classical or
extended SDRs. Atypical SDRs include biliverdin IX beta
reductase (BVR-B,aka flavin reductase), NMRa (a negative
transcriptional regulator of various fungi),
progesterone 5-beta-reductase like proteins,
phenylcoumaran benzylic ether and
pinoresinol-lariciresinol reductases, phenylpropene
synthases, eugenol synthase, triphenylmethane reductase,
isoflavone reductases, and others. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold, an NAD(P)(H)-binding region, and a structurally
diverse C-terminal region. Sequence identity between
different SDR enzymes is typically in the 15-30% range;
they catalyze a wide range of activities including the
metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase numbering). In
addition to the Tyr and Lys, there is often an upstream
Ser and/or an Asn, contributing to the active site;
while substrate binding is in the C-terminal region,
which determines specificity. The standard reaction
mechanism is a 4-pro-S hydride transfer and proton relay
involving the conserved Tyr and Lys, a water molecule
stabilized by Asn, and nicotinamide. Complex
(multidomain) SDRs such as ketoreductase domains of
fatty acid synthase have a GGXGXXG NAD(P)-binding motif
and an altered active site motif (YXXXN). Fungal type
ketoacyl reductases have a TGXXXGX(1-2)G NAD(P)-binding
motif.
Length = 176
Score = 32.4 bits (74), Expect = 0.057
Identities = 13/28 (46%), Positives = 20/28 (71%), Gaps = 2/28 (7%)
Query: 104 ILLTGAGNGIGRELAKQFVQ--HKVTLV 129
IL+ GA IGR LA++ ++ H+VTL+
Sbjct: 1 ILILGATGFIGRALARELLEQGHEVTLL 28
>gnl|CDD|187669 cd09809, human_WWOX_like_SDR_c-like, human WWOX (WW
domain-containing oxidoreductase)-like, classical
(c)-like SDRs. Classical-like SDR domain of human WWOX
and related proteins. Proteins in this subfamily share
the glycine-rich NAD-binding motif of the classical
SDRs, have a partial match to the canonical active site
tetrad, but lack the typical active site Ser. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRs are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes catalyze a
wide range of activities including the metabolism of
steroids, cofactors, carbohydrates, lipids, aromatic
compounds, and amino acids, and act in redox sensing.
Classical SDRs have an TGXXX[AG]XG cofactor binding
motif and a YXXXK active site motif, with the Tyr
residue of the active site motif serving as a critical
catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 284
Score = 32.6 bits (74), Expect = 0.060
Identities = 18/49 (36%), Positives = 30/49 (61%), Gaps = 3/49 (6%)
Query: 101 GEIILLTGAGNGIGRELAKQFVQH--KVTLVCWDIDEKGNNETKQMLEE 147
G++I++TGA +GIG E A+ F H V L C ++ + + ++LEE
Sbjct: 1 GKVIIITGANSGIGFETARSFALHGAHVILACRNM-SRASAAVSRILEE 48
>gnl|CDD|180802 PRK07035, PRK07035, short chain dehydrogenase; Provisional.
Length = 252
Score = 32.3 bits (74), Expect = 0.070
Identities = 13/27 (48%), Positives = 16/27 (59%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQH 124
L G+I L+TGA GIG +AK Q
Sbjct: 5 DLTGKIALVTGASRGIGEAIAKLLAQQ 31
>gnl|CDD|180576 PRK06463, fabG, 3-ketoacyl-(acyl-carrier-protein) reductase;
Provisional.
Length = 255
Score = 32.4 bits (74), Expect = 0.071
Identities = 10/25 (40%), Positives = 18/25 (72%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQ 123
+G++ L+TG GIGR +A+ F++
Sbjct: 5 FKGKVALITGGTRGIGRAIAEAFLR 29
>gnl|CDD|237187 PRK12743, PRK12743, oxidoreductase; Provisional.
Length = 256
Score = 31.9 bits (73), Expect = 0.094
Identities = 13/46 (28%), Positives = 23/46 (50%), Gaps = 1/46 (2%)
Query: 105 LLTGAGNGIGRELAKQFVQHKVTL-VCWDIDEKGNNETKQMLEEQG 149
++T + +GIG+ A Q + + W DE+G ET + + G
Sbjct: 6 IVTASDSGIGKACALLLAQQGFDIGITWHSDEEGAKETAEEVRSHG 51
>gnl|CDD|236342 PRK08862, PRK08862, short chain dehydrogenase; Provisional.
Length = 227
Score = 32.0 bits (73), Expect = 0.096
Identities = 14/41 (34%), Positives = 24/41 (58%)
Query: 103 IILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQ 143
IIL+T AG+ +GR ++ F + TL+ D D+ +T +
Sbjct: 7 IILITSAGSVLGRTISCHFARLGATLILCDQDQSALKDTYE 47
>gnl|CDD|212493 cd08932, HetN_like_SDR_c, HetN oxidoreductase-like, classical (c)
SDR. This subgroup includes Anabaena sp. strain PCC
7120 HetN, a putative oxidoreductase involved in
heterocyst differentiation, and related proteins. SDRs
are a functionally diverse family of oxidoreductases
that have a single domain with a structurally conserved
Rossmann fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRs are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes catalyze a
wide range of activities including the metabolism of
steroids, cofactors, carbohydrates, lipids, aromatic
compounds, and amino acids, and act in redox sensing.
Classical SDRs have an TGXXX[AG]XG cofactor binding
motif and a YXXXK active site motif, with the Tyr
residue of the active site motif serving as a critical
catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 223
Score = 31.9 bits (73), Expect = 0.098
Identities = 9/28 (32%), Positives = 15/28 (53%)
Query: 103 IILLTGAGNGIGRELAKQFVQHKVTLVC 130
+ L+TGA GIG E+A+ + +
Sbjct: 2 VALVTGASRGIGIEIARALARDGYRVSL 29
>gnl|CDD|187612 cd05354, SDR_c7, classical (c) SDR, subgroup 7. These proteins are
members of the classical SDR family, with a canonical
active site triad (and also an active site Asn) and a
typical Gly-rich NAD-binding motif. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRS are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes have a
3-glycine N-terminal NAD(P)(H)-binding pattern
(typically, TGxxxGxG in classical SDRs and TGxxGxxG in
extended SDRs), while substrate binding is in the
C-terminal region. A critical catalytic Tyr residue
(Tyr-151, human 15-hydroxyprostaglandin dehydrogenase
(15-PGDH) numbering), is often found in a conserved
YXXXK pattern. In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) or additional
Ser, contributing to the active site. Substrates for
these enzymes include sugars, steroids, alcohols, and
aromatic compounds. The standard reaction mechanism is a
proton relay involving the conserved Tyr and Lys, as
well as Asn (or Ser). Some SDR family members, including
17 beta-hydroxysteroid dehydrogenase contain an
additional helix-turn-helix motif that is not generally
found among SDRs.
Length = 235
Score = 32.0 bits (73), Expect = 0.100
Identities = 11/39 (28%), Positives = 19/39 (48%), Gaps = 3/39 (7%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQH---KVTLVCWDID 134
++ + +L+TGA GIG+ + + H KV D
Sbjct: 1 IKDKTVLVTGANRGIGKAFVESLLAHGAKKVYAAVRDPG 39
>gnl|CDD|236372 PRK09072, PRK09072, short chain dehydrogenase; Provisional.
Length = 263
Score = 31.8 bits (73), Expect = 0.10
Identities = 11/24 (45%), Positives = 16/24 (66%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFV 122
L+ + +LLTGA GIG+ LA+
Sbjct: 3 LKDKRVLLTGASGGIGQALAEALA 26
>gnl|CDD|181518 PRK08643, PRK08643, acetoin reductase; Validated.
Length = 256
Score = 32.0 bits (73), Expect = 0.10
Identities = 20/56 (35%), Positives = 30/56 (53%), Gaps = 4/56 (7%)
Query: 100 EGEIILLTGAGNGIGRELAKQFVQ--HKVTLVCWDIDEKGNNETKQMLEEQGYKNI 153
++ L+TGAG GIG +AK+ V+ KV +V D +E+ L + G K I
Sbjct: 1 MSKVALVTGAGQGIGFAIAKRLVEDGFKVAIV--DYNEETAQAAADKLSKDGGKAI 54
>gnl|CDD|218026 pfam04321, RmlD_sub_bind, RmlD substrate binding domain.
L-rhamnose is a saccharide required for the virulence of
some bacteria. Its precursor, dTDP-L-rhamnose, is
synthesised by four different enzymes the final one of
which is RmlD. The RmlD substrate binding domain is
responsible for binding a sugar nucleotide.
Length = 284
Score = 31.8 bits (73), Expect = 0.12
Identities = 12/36 (33%), Positives = 18/36 (50%), Gaps = 5/36 (13%)
Query: 104 ILLTGAGNGIGRELAKQFVQHKVTLV-----CWDID 134
IL+TGA +GREL + + V +V D+
Sbjct: 1 ILVTGANGQLGRELTRLLAERGVEVVALDRPELDLT 36
>gnl|CDD|135637 PRK05876, PRK05876, short chain dehydrogenase; Provisional.
Length = 275
Score = 31.5 bits (71), Expect = 0.13
Identities = 13/52 (25%), Positives = 24/52 (46%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGY 150
G ++TG +GIG +F + +V D+D+ G + L +G+
Sbjct: 4 FPGRGAVITGGASGIGLATGTEFARRGARVVLGDVDKPGLRQAVNHLRAEGF 55
>gnl|CDD|168574 PRK06484, PRK06484, short chain dehydrogenase; Validated.
Length = 520
Score = 31.7 bits (72), Expect = 0.13
Identities = 15/54 (27%), Positives = 25/54 (46%), Gaps = 3/54 (5%)
Query: 92 IPPSEKSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQML 145
P +E ++ +TG GIGR +A +F L+ D D +G + + L
Sbjct: 263 SPLAES---PRVVAITGGARGIGRAVADRFAAAGDRLLIIDRDAEGAKKLAEAL 313
Score = 28.7 bits (64), Expect = 1.5
Identities = 13/46 (28%), Positives = 23/46 (50%)
Query: 100 EGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQML 145
+ ++L+TGA GIGR ++F + +V D + + E L
Sbjct: 4 QSRVVLVTGAAGGIGRAACQRFARAGDQVVVADRNVERARERADSL 49
>gnl|CDD|187586 cd05325, carb_red_sniffer_like_SDR_c, carbonyl reductase
sniffer-like, classical (c) SDRs. Sniffer is an
NADPH-dependent carbonyl reductase of the classical SDR
family. Studies in Drosophila melanogaster implicate
Sniffer in the prevention of neurodegeneration due to
aging and oxidative-stress. This subgroup also includes
Rhodococcus sp. AD45 IsoH, which is an NAD-dependent
1-hydroxy-2-glutathionyl-2-methyl-3-butene dehydrogenase
involved in isoprene metabolism, Aspergillus nidulans
StcE encoded by a gene which is part of a proposed
sterigmatocystin biosynthesis gene cluster, Bacillus
circulans SANK 72073 BtrF encoded by a gene found in the
butirosin biosynthesis gene cluster, and Aspergillus
parasiticus nor-1 involved in the biosynthesis of
aflatoxins. SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRs are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes catalyze a wide range of activities including
the metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 233
Score = 31.5 bits (72), Expect = 0.15
Identities = 11/26 (42%), Positives = 15/26 (57%)
Query: 104 ILLTGAGNGIGRELAKQFVQHKVTLV 129
+L+TGA GIG EL +Q + V
Sbjct: 1 VLITGASRGIGLELVRQLLARGNNTV 26
>gnl|CDD|187604 cd05346, SDR_c5, classical (c) SDR, subgroup 5. These proteins are
members of the classical SDR family, with a canonical
active site tetrad and a typical Gly-rich NAD-binding
motif. SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRs are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes catalyze a wide range of activities including
the metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 249
Score = 31.5 bits (72), Expect = 0.15
Identities = 11/28 (39%), Positives = 18/28 (64%), Gaps = 2/28 (7%)
Query: 103 IILLTGAGNGIGRELAKQFVQ--HKVTL 128
+L+TGA +GIG A++F + K+ L
Sbjct: 2 TVLITGASSGIGEATARRFAKAGAKLIL 29
>gnl|CDD|180669 PRK06720, PRK06720, hypothetical protein; Provisional.
Length = 169
Score = 30.7 bits (69), Expect = 0.18
Identities = 15/51 (29%), Positives = 26/51 (50%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
L G++ ++TG G GIGR A + ++ DID++ T + + G
Sbjct: 14 LAGKVAIVTGGGIGIGRNTALLLAKQGAKVIVTDIDQESGQATVEEITNLG 64
>gnl|CDD|236094 PRK07774, PRK07774, short chain dehydrogenase; Provisional.
Length = 250
Score = 31.3 bits (71), Expect = 0.18
Identities = 14/52 (26%), Positives = 28/52 (53%), Gaps = 1/52 (1%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDID-EKGNNETKQMLEEQG 149
+ ++ ++TGA GIG+ A+ + ++V DI+ E KQ++ + G
Sbjct: 4 FDDKVAIVTGAAGGIGQAYAEALAREGASVVVADINAEGAERVAKQIVADGG 55
>gnl|CDD|187608 cd05350, SDR_c6, classical (c) SDR, subgroup 6. These proteins are
members of the classical SDR family, with a canonical
active site tetrad and a fairly well conserved typical
Gly-rich NAD-binding motif. SDRs are a functionally
diverse family of oxidoreductases that have a single
domain with a structurally conserved Rossmann fold
(alpha/beta folding pattern with a central beta-sheet),
an NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRS are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes have a 3-glycine N-terminal
NAD(P)(H)-binding pattern (typically, TGxxxGxG in
classical SDRs and TGxxGxxG in extended SDRs), while
substrate binding is in the C-terminal region. A
critical catalytic Tyr residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering), is often found in a conserved YXXXK pattern.
In addition to the Tyr and Lys, there is often an
upstream Ser (Ser-138, 15-PGDH numbering) and/or an Asn
(Asn-107, 15-PGDH numbering) or additional Ser,
contributing to the active site. Substrates for these
enzymes include sugars, steroids, alcohols, and aromatic
compounds. The standard reaction mechanism is a proton
relay involving the conserved Tyr and Lys, as well as
Asn (or Ser). Some SDR family members, including 17
beta-hydroxysteroid dehydrogenase contain an additional
helix-turn-helix motif that is not generally found among
SDRs.
Length = 239
Score = 31.1 bits (71), Expect = 0.18
Identities = 11/20 (55%), Positives = 17/20 (85%)
Query: 104 ILLTGAGNGIGRELAKQFVQ 123
+L+TGA +GIGR LA++F +
Sbjct: 1 VLITGASSGIGRALAREFAK 20
>gnl|CDD|236110 PRK07831, PRK07831, short chain dehydrogenase; Provisional.
Length = 262
Score = 31.2 bits (71), Expect = 0.20
Identities = 20/65 (30%), Positives = 31/65 (47%), Gaps = 2/65 (3%)
Query: 93 PPSEKSLEGEIILLTGA-GNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQML-EEQGY 150
P L G+++L+T A G GIG A++ ++ +V DI E+ ET L E G
Sbjct: 9 VPGHGLLAGKVVLVTAAAGTGIGSATARRALEEGARVVISDIHERRLGETADELAAELGL 68
Query: 151 KNIHT 155
+
Sbjct: 69 GRVEA 73
>gnl|CDD|187585 cd05324, carb_red_PTCR-like_SDR_c, Porcine testicular carbonyl
reductase (PTCR)-like, classical (c) SDRs. PTCR is a
classical SDR which catalyzes the NADPH-dependent
reduction of ketones on steroids and prostaglandins.
Unlike most SDRs, PTCR functions as a monomer. This
subgroup also includes human carbonyl reductase 1 (CBR1)
and CBR3. CBR1 is an NADPH-dependent SDR with broad
substrate specificity and may be responsible for the in
vivo reduction of quinones, prostaglandins, and other
carbonyl-containing compounds. In addition it includes
poppy NADPH-dependent salutaridine reductase which
catalyzes the stereospecific reduction of salutaridine
to 7(S)-salutaridinol in the biosynthesis of morphine,
and Arabidopsis SDR1,a menthone reductase, which
catalyzes the reduction of menthone to neomenthol, a
compound with antimicrobial activity; SDR1 can also
carry out neomenthol oxidation. SDRs are a functionally
diverse family of oxidoreductases that have a single
domain with a structurally conserved Rossmann fold
(alpha/beta folding pattern with a central beta-sheet),
an NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRs are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes catalyze a wide range of
activities including the metabolism of steroids,
cofactors, carbohydrates, lipids, aromatic compounds,
and amino acids, and act in redox sensing. Classical
SDRs have an TGXXX[AG]XG cofactor binding motif and a
YXXXK active site motif, with the Tyr residue of the
active site motif serving as a critical catalytic
residue (Tyr-151, 15-hydroxyprostaglandin dehydrogenase
(15-PGDH) numbering). In addition to the Tyr and Lys,
there is often an upstream Ser (Ser-138, 15-PGDH
numbering) and/or an Asn (Asn-107, 15-PGDH numbering)
contributing to the active site; while substrate binding
is in the C-terminal region, which determines
specificity. The standard reaction mechanism is a
4-pro-S hydride transfer and proton relay involving the
conserved Tyr and Lys, a water molecule stabilized by
Asn, and nicotinamide. Extended SDRs have additional
elements in the C-terminal region, and typically have a
TGXXGXXG cofactor binding motif. Complex (multidomain)
SDRs such as ketoreductase domains of fatty acid
synthase have a GGXGXXG NAD(P)-binding motif and an
altered active site motif (YXXXN). Fungal type ketoacyl
reductases have a TGXXXGX(1-2)G NAD(P)-binding motif.
Some atypical SDRs have lost catalytic activity and/or
have an unusual NAD(P)-binding motif and missing or
unusual active site residues. Reactions catalyzed within
the SDR family include isomerization, decarboxylation,
epimerization, C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 225
Score = 30.7 bits (70), Expect = 0.22
Identities = 17/50 (34%), Positives = 26/50 (52%), Gaps = 6/50 (12%)
Query: 102 EIILLTGAGNGIG----RELAKQFVQHKVTLVCWDIDEKGNNETKQMLEE 147
++ L+TGA GIG R+LAK V L D+ E+G +++ E
Sbjct: 1 KVALVTGANRGIGFEIVRQLAKSG-PGTVILTARDV-ERGQAAVEKLRAE 48
>gnl|CDD|236040 PRK07523, PRK07523, gluconate 5-dehydrogenase; Provisional.
Length = 255
Score = 30.9 bits (70), Expect = 0.23
Identities = 15/52 (28%), Positives = 22/52 (42%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
L G L+TG+ GIG LA+ Q ++ D + L+ QG
Sbjct: 7 DLTGRRALVTGSSQGIGYALAEGLAQAGAEVILNGRDPAKLAAAAESLKGQG 58
>gnl|CDD|187656 cd08953, KR_2_SDR_x, ketoreductase (KR), subgroup 2, complex (x)
SDRs. Ketoreductase, a module of the multidomain
polyketide synthase (PKS), has 2 subdomains, each
corresponding to a SDR family monomer. The C-terminal
subdomain catalyzes the NADPH-dependent reduction of the
beta-carbonyl of a polyketide to a hydroxyl group, a
step in the biosynthesis of polyketides, such as
erythromycin. The N-terminal subdomain, an interdomain
linker, is a truncated Rossmann fold which acts to
stabilizes the catalytic subdomain. Unlike typical SDRs,
the isolated domain does not oligomerize but is composed
of 2 subdomains, each resembling an SDR monomer. The
active site resembles that of typical SDRs, except that
the usual positions of the catalytic Asn and Tyr are
swapped, so that the canonical YXXXK motif changes to
YXXXN. Modular PKSs are multifunctional structures in
which the makeup recapitulates that found in (and may
have evolved from) FAS. Polyketide synthesis also
proceeds via the addition of 2-carbon units as in fatty
acid synthesis. The complex SDR NADP-binding motif,
GGXGXXG, is often present, but is not strictly conserved
in each instance of the module. This subfamily includes
both KR domains of the Bacillus subtilis Pks J,-L, and
PksM, and all three KR domains of PksN, components of
the megacomplex bacillaene synthase, which synthesizes
the antibiotic bacillaene. SDRs are a functionally
diverse family of oxidoreductases that have a single
domain with a structurally conserved Rossmann fold
(alpha/beta folding pattern with a central beta-sheet),
an NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRs are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes catalyze a wide range of
activities including the metabolism of steroids,
cofactors, carbohydrates, lipids, aromatic compounds,
and amino acids, and act in redox sensing. Classical
SDRs have an TGXXX[AG]XG cofactor binding motif and a
YXXXK active site motif, with the Tyr residue of the
active site motif serving as a critical catalytic
residue (Tyr-151, human prostaglandin dehydrogenase
(PGDH) numbering). In addition to the Tyr and Lys, there
is often an upstream Ser (Ser-138, PGDH numbering)
and/or an Asn (Asn-107, PGDH numbering) contributing to
the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type KRs have a TGXXXGX(1-2)G
NAD(P)-binding motif. Some atypical SDRs have lost
catalytic activity and/or have an unusual NAD(P)-binding
motif and missing or unusual active site residues.
Reactions catalyzed within the SDR family include
isomerization, decarboxylation, epimerization, C=N bond
reduction, dehydratase activity, dehalogenation,
Enoyl-CoA reduction, and carbonyl-alcohol
oxidoreduction.
Length = 436
Score = 30.8 bits (70), Expect = 0.26
Identities = 10/25 (40%), Positives = 14/25 (56%)
Query: 100 EGEIILLTGAGNGIGRELAKQFVQH 124
G + L+TG GIGR LA+ +
Sbjct: 204 PGGVYLVTGGAGGIGRALARALARR 228
>gnl|CDD|236016 PRK07424, PRK07424, bifunctional sterol desaturase/short chain
dehydrogenase; Validated.
Length = 406
Score = 30.8 bits (70), Expect = 0.27
Identities = 11/32 (34%), Positives = 19/32 (59%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLV 129
SL+G+ + +TGA +G+ L K+ Q +V
Sbjct: 175 SLKGKTVAVTGASGTLGQALLKELHQQGAKVV 206
>gnl|CDD|187616 cd05358, GlcDH_SDR_c, glucose 1 dehydrogenase (GlcDH), classical
(c) SDRs. GlcDH, is a tetrameric member of the SDR
family, it catalyzes the NAD(P)-dependent oxidation of
beta-D-glucose to D-glucono-delta-lactone. GlcDH has a
typical NAD-binding site glycine-rich pattern as well as
the canonical active site tetrad (YXXXK motif plus
upstream Ser and Asn). SDRs are a functionally diverse
family of oxidoreductases that have a single domain with
a structurally conserved Rossmann fold (alpha/beta
folding pattern with a central beta-sheet), an
NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRS are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes have a 3-glycine N-terminal
NAD(P)(H)-binding pattern (typically, TGxxxGxG in
classical SDRs and TGxxGxxG in extended SDRs), while
substrate binding is in the C-terminal region. A
critical catalytic Tyr residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering), is often found in a conserved YXXXK pattern.
In addition to the Tyr and Lys, there is often an
upstream Ser (Ser-138, 15-PGDH numbering) and/or an Asn
(Asn-107, 15-PGDH numbering) or additional Ser,
contributing to the active site. Substrates for these
enzymes include sugars, steroids, alcohols, and aromatic
compounds. The standard reaction mechanism is a proton
relay involving the conserved Tyr and Lys, as well as
Asn (or Ser). Some SDR family members, including 17
beta-hydroxysteroid dehydrogenase contain an additional
helix-turn-helix motif that is not generally found among
SDRs.
Length = 253
Score = 30.4 bits (69), Expect = 0.28
Identities = 16/56 (28%), Positives = 29/56 (51%), Gaps = 1/56 (1%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVC-WDIDEKGNNETKQMLEEQGYKNI 153
L+G++ L+TGA +GIG+ +A + +V + E E + ++ G K I
Sbjct: 1 LKGKVALVTGASSGIGKAIAIRLATAGANVVVNYRSKEDAAEEVVEEIKAVGGKAI 56
>gnl|CDD|181120 PRK07792, fabG, 3-ketoacyl-(acyl-carrier-protein) reductase;
Provisional.
Length = 306
Score = 30.5 bits (69), Expect = 0.29
Identities = 10/30 (33%), Positives = 17/30 (56%), Gaps = 4/30 (13%)
Query: 95 SEKSLEGEIILLTGAGNGIGR----ELAKQ 120
+ L G++ ++TGA G+GR LA+
Sbjct: 6 NTTDLSGKVAVVTGAAAGLGRAEALGLARL 35
>gnl|CDD|235816 PRK06500, PRK06500, short chain dehydrogenase; Provisional.
Length = 249
Score = 30.3 bits (69), Expect = 0.29
Identities = 14/47 (29%), Positives = 22/47 (46%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQML 145
L+G+ L+TG +GIG E A+QF+ + D + L
Sbjct: 4 LQGKTALITGGTSGIGLETARQFLAEGARVAITGRDPASLEAARAEL 50
>gnl|CDD|180617 PRK06550, fabG, 3-ketoacyl-(acyl-carrier-protein) reductase;
Provisional.
Length = 235
Score = 30.3 bits (69), Expect = 0.30
Identities = 11/43 (25%), Positives = 20/43 (46%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNET 141
+ +L+TGA +GIG A+ F+ + D +K +
Sbjct: 3 FMTKTVLITGAASGIGLAQARAFLAQGAQVYGVDKQDKPDLSG 45
>gnl|CDD|181324 PRK08251, PRK08251, short chain dehydrogenase; Provisional.
Length = 248
Score = 30.3 bits (69), Expect = 0.30
Identities = 9/18 (50%), Positives = 15/18 (83%)
Query: 104 ILLTGAGNGIGRELAKQF 121
IL+TGA +G+G +A++F
Sbjct: 5 ILITGASSGLGAGMAREF 22
>gnl|CDD|183772 PRK12823, benD, 1,6-dihydroxycyclohexa-2,4-diene-1-carboxylate
dehydrogenase; Provisional.
Length = 260
Score = 30.3 bits (69), Expect = 0.34
Identities = 11/33 (33%), Positives = 19/33 (57%)
Query: 100 EGEIILLTGAGNGIGRELAKQFVQHKVTLVCWD 132
G+++++TGA GIGR +A + +V D
Sbjct: 7 AGKVVVVTGAAQGIGRGVALRAAAEGARVVLVD 39
>gnl|CDD|212495 cd09807, retinol-DH_like_SDR_c, retinol dehydrogenases
(retinol-DHs), classical (c) SDRs. Classical SDR-like
subgroup containing retinol-DHs and related proteins.
Retinol is processed by a medium chain alcohol
dehydrogenase followed by retinol-DHs. Proteins in this
subfamily share the glycine-rich NAD-binding motif of
the classical SDRs, have a partial match to the
canonical active site tetrad, but lack the typical
active site Ser. This subgroup includes the human
proteins: retinol dehydrogenase -12, -13 ,and -14. SDRs
are a functionally diverse family of oxidoreductases
that have a single domain with a structurally conserved
Rossmann fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRs are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes catalyze a
wide range of activities including the metabolism of
steroids, cofactors, carbohydrates, lipids, aromatic
compounds, and amino acids, and act in redox sensing.
Classical SDRs have an TGXXX[AG]XG cofactor binding
motif and a YXXXK active site motif, with the Tyr
residue of the active site motif serving as a critical
catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 274
Score = 30.1 bits (68), Expect = 0.35
Identities = 13/55 (23%), Positives = 28/55 (50%), Gaps = 3/55 (5%)
Query: 101 GEIILLTGAGNGIGRELAKQFVQH--KVTLVCWDIDEKGNNETKQMLEEQGYKNI 153
G+ +++TGA GIG+E A++ + +V + C D+ K ++ + +
Sbjct: 1 GKTVIITGANTGIGKETARELARRGARVIMACRDM-AKCEEAAAEIRRDTLNHEV 54
>gnl|CDD|187668 cd09808, DHRS-12_like_SDR_c-like, human dehydrogenase/reductase SDR
family member (DHRS)-12/FLJ13639-like, classical
(c)-like SDRs. Classical SDR-like subgroup containing
human DHRS-12/FLJ13639, the 36K protein of zebrafish CNS
myelin, and related proteins. DHRS-12/FLJ13639 is
expressed in neurons and oligodendrocytes in the human
cerebral cortex. Proteins in this subgroup share the
glycine-rich NAD-binding motif of the classical SDRs,
have a partial match to the canonical active site
tetrad, but lack the typical active site Ser. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRs are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes catalyze a
wide range of activities including the metabolism of
steroids, cofactors, carbohydrates, lipids, aromatic
compounds, and amino acids, and act in redox sensing.
Classical SDRs have an TGXXX[AG]XG cofactor binding
motif and a YXXXK active site motif, with the Tyr
residue of the active site motif serving as a critical
catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 255
Score = 30.3 bits (68), Expect = 0.35
Identities = 17/55 (30%), Positives = 27/55 (49%), Gaps = 3/55 (5%)
Query: 101 GEIILLTGAGNGIGRELAKQFVQH--KVTLVCWDIDEKGNNETKQMLEEQGYKNI 153
G L+TGA +GIG+ A + V +VC + + K++ E G +NI
Sbjct: 1 GRSFLITGANSGIGKAAALAIAKRGGTVHMVCRN-QTRAEEARKEIETESGNQNI 54
>gnl|CDD|187646 cd08942, RhlG_SDR_c, RhlG and related beta-ketoacyl reductases,
classical (c) SDRs. Pseudomonas aeruginosa RhlG is an
SDR-family beta-ketoacyl reductase involved in
Rhamnolipid biosynthesis. RhlG is similar to but
distinct from the FabG family of beta-ketoacyl-acyl
carrier protein (ACP) of type II fatty acid synthesis.
RhlG and related proteins are classical SDRs, with a
canonical active site tetrad and glycine-rich
NAD(P)-binding motif. SDRs are a functionally diverse
family of oxidoreductases that have a single domain with
a structurally conserved Rossmann fold (alpha/beta
folding pattern with a central beta-sheet), an
NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRs are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes catalyze a wide range of
activities including the metabolism of steroids,
cofactors, carbohydrates, lipids, aromatic compounds,
and amino acids, and act in redox sensing. Classical
SDRs have an TGXXX[AG]XG cofactor binding motif and a
YXXXK active site motif, with the Tyr residue of the
active site motif serving as a critical catalytic
residue (Tyr-151, human 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) numbering). In addition to the
Tyr and Lys, there is often an upstream Ser (Ser-138,
15-PGDH numbering) and/or an Asn (Asn-107, 15-PGDH
numbering) contributing to the active site; while
substrate binding is in the C-terminal region, which
determines specificity. The standard reaction mechanism
is a 4-pro-S hydride transfer and proton relay involving
the conserved Tyr and Lys, a water molecule stabilized
by Asn, and nicotinamide. Extended SDRs have additional
elements in the C-terminal region, and typically have a
TGXXGXXG cofactor binding motif. Complex (multidomain)
SDRs such as ketoreductase domains of fatty acid
synthase have a GGXGXXG NAD(P)-binding motif and an
altered active site motif (YXXXN). Fungal type ketoacyl
reductases have a TGXXXGX(1-2)G NAD(P)-binding motif.
Some atypical SDRs have lost catalytic activity and/or
have an unusual NAD(P)-binding motif and missing or
unusual active site residues. Reactions catalyzed within
the SDR family include isomerization, decarboxylation,
epimerization, C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 250
Score = 30.1 bits (68), Expect = 0.36
Identities = 12/26 (46%), Positives = 20/26 (76%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQ 123
S+ G+I+L+TG GIGR +A+ F++
Sbjct: 3 SVAGKIVLVTGGSRGIGRMIAQGFLE 28
>gnl|CDD|187589 cd05328, 3alpha_HSD_SDR_c, alpha hydroxysteroid dehydrogenase
(3alpha_HSD), classical (c) SDRs. Bacterial
3-alpha_HSD, which catalyzes the NAD-dependent
oxidoreduction of hydroxysteroids, is a dimeric member
of the classical SDR family. SDRs are a functionally
diverse family of oxidoreductases that have a single
domain with a structurally conserved Rossmann fold
(alpha/beta folding pattern with a central beta-sheet),
an NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRs are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes catalyze a wide range of
activities including the metabolism of steroids,
cofactors, carbohydrates, lipids, aromatic compounds,
and amino acids, and act in redox sensing. Classical
SDRs have an TGXXX[AG]XG cofactor binding motif and a
YXXXK active site motif, with the Tyr residue of the
active site motif serving as a critical catalytic
residue (Tyr-151, human 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) numbering). In addition to the
Tyr and Lys, there is often an upstream Ser (Ser-138,
15-PGDH numbering) and/or an Asn (Asn-107, 15-PGDH
numbering) contributing to the active site; while
substrate binding is in the C-terminal region, which
determines specificity. The standard reaction mechanism
is a 4-pro-S hydride transfer and proton relay involving
the conserved Tyr and Lys, a water molecule stabilized
by Asn, and nicotinamide. Extended SDRs have additional
elements in the C-terminal region, and typically have a
TGXXGXXG cofactor binding motif. Complex (multidomain)
SDRs such as ketoreductase domains of fatty acid
synthase have a GGXGXXG NAD(P)-binding motif and an
altered active site motif (YXXXN). Fungal type ketoacyl
reductases have a TGXXXGX(1-2)G NAD(P)-binding motif.
Some atypical SDRs have lost catalytic activity and/or
have an unusual NAD(P)-binding motif and missing or
unusual active site residues. Reactions catalyzed within
the SDR family include isomerization, decarboxylation,
epimerization, C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 250
Score = 30.2 bits (68), Expect = 0.40
Identities = 11/33 (33%), Positives = 18/33 (54%)
Query: 103 IILLTGAGNGIGRELAKQFVQHKVTLVCWDIDE 135
I++TGA +GIG A+ T++ D+ E
Sbjct: 1 TIVITGAASGIGAATAELLEDAGHTVIGIDLRE 33
>gnl|CDD|180761 PRK06935, PRK06935, 2-deoxy-D-gluconate 3-dehydrogenase;
Provisional.
Length = 258
Score = 30.1 bits (68), Expect = 0.45
Identities = 16/56 (28%), Positives = 32/56 (57%), Gaps = 5/56 (8%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNN--ETKQMLEEQGYK 151
SL+G++ ++TG G+G+ A + ++ I G N ET++++E++G K
Sbjct: 12 SLDGKVAIVTGGNTGLGQGYAVALAKAGADII---ITTHGTNWDETRRLIEKEGRK 64
>gnl|CDD|181126 PRK07806, PRK07806, short chain dehydrogenase; Provisional.
Length = 248
Score = 29.7 bits (67), Expect = 0.48
Identities = 10/26 (38%), Positives = 14/26 (53%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQ 123
L G+ L+TG+ GIG + AK
Sbjct: 3 DLPGKTALVTGSSRGIGADTAKILAG 28
>gnl|CDD|183718 PRK12746, PRK12746, short chain dehydrogenase; Provisional.
Length = 254
Score = 30.0 bits (67), Expect = 0.50
Identities = 17/56 (30%), Positives = 33/56 (58%), Gaps = 1/56 (1%)
Query: 97 KSLEGEIILLTGAGNGIGRELAKQFVQH-KVTLVCWDIDEKGNNETKQMLEEQGYK 151
K+L+G++ L+TGA GIGR +A + + + + +++ +ET + +E G K
Sbjct: 2 KNLDGKVALVTGASRGIGRAIAMRLANDGALVAIHYGRNKQAADETIREIESNGGK 57
>gnl|CDD|182531 PRK10538, PRK10538, malonic semialdehyde reductase; Provisional.
Length = 248
Score = 29.7 bits (67), Expect = 0.57
Identities = 12/26 (46%), Positives = 18/26 (69%), Gaps = 2/26 (7%)
Query: 103 IILLTGAGNGIGRELAKQFVQ--HKV 126
I+L+TGA G G + ++F+Q HKV
Sbjct: 2 IVLVTGATAGFGECITRRFIQQGHKV 27
>gnl|CDD|180586 PRK06483, PRK06483, dihydromonapterin reductase; Provisional.
Length = 236
Score = 29.5 bits (67), Expect = 0.59
Identities = 10/21 (47%), Positives = 12/21 (57%)
Query: 104 ILLTGAGNGIGRELAKQFVQH 124
IL+TGAG IG LA +
Sbjct: 5 ILITGAGQRIGLALAWHLLAQ 25
>gnl|CDD|235910 PRK07024, PRK07024, short chain dehydrogenase; Provisional.
Length = 257
Score = 29.5 bits (67), Expect = 0.59
Identities = 10/26 (38%), Positives = 18/26 (69%)
Query: 103 IILLTGAGNGIGRELAKQFVQHKVTL 128
+ +TGA +GIG+ LA+++ + TL
Sbjct: 4 KVFITGASSGIGQALAREYARQGATL 29
>gnl|CDD|183719 PRK12747, PRK12747, short chain dehydrogenase; Provisional.
Length = 252
Score = 29.7 bits (66), Expect = 0.60
Identities = 12/23 (52%), Positives = 18/23 (78%)
Query: 99 LEGEIILLTGAGNGIGRELAKQF 121
L+G++ L+TGA GIGR +AK+
Sbjct: 2 LKGKVALVTGASRGIGRAIAKRL 24
>gnl|CDD|181762 PRK09291, PRK09291, short chain dehydrogenase; Provisional.
Length = 257
Score = 29.6 bits (67), Expect = 0.60
Identities = 11/15 (73%), Positives = 14/15 (93%)
Query: 104 ILLTGAGNGIGRELA 118
IL+TGAG+G GRE+A
Sbjct: 5 ILITGAGSGFGREVA 19
>gnl|CDD|187607 cd05349, BKR_2_SDR_c, putative beta-ketoacyl acyl carrier protein
[ACP]reductase (BKR), subgroup 2, classical (c) SDR.
This subgroup includes Rhizobium sp. NGR234 FabG1. The
Escherichai coli K12 BKR, FabG, belongs to a different
subgroup. BKR catalyzes the NADPH-dependent reduction of
ACP in the first reductive step of de novo fatty acid
synthesis (FAS). FAS consists of four elongation steps,
which are repeated to extend the fatty acid chain
through the addition of two-carbo units from malonyl
acyl-carrier protein (ACP): condensation, reduction,
dehydration, and a final reduction. Type II FAS, typical
of plants and many bacteria, maintains these activities
on discrete polypeptides, while type I FAS utilizes one
or two multifunctional polypeptides. BKR resembles enoyl
reductase, which catalyzes the second reduction step in
FAS. SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRS are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes have a 3-glycine N-terminal NAD(P)(H)-binding
pattern (typically, TGxxxGxG in classical SDRs and
TGxxGxxG in extended SDRs), while substrate binding is
in the C-terminal region. A critical catalytic Tyr
residue (Tyr-151, human 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) numbering), is often found in a
conserved YXXXK pattern. In addition to the Tyr and Lys,
there is often an upstream Ser (Ser-138, 15-PGDH
numbering) and/or an Asn (Asn-107, 15-PGDH numbering) or
additional Ser, contributing to the active site.
Substrates for these enzymes include sugars, steroids,
alcohols, and aromatic compounds. The standard reaction
mechanism is a proton relay involving the conserved Tyr
and Lys, as well as Asn (or Ser). Some SDR family
members, including 17 beta-hydroxysteroid dehydrogenase
contain an additional helix-turn-helix motif that is not
generally found among SDRs.
Length = 246
Score = 29.7 bits (67), Expect = 0.61
Identities = 8/20 (40%), Positives = 15/20 (75%)
Query: 102 EIILLTGAGNGIGRELAKQF 121
+++L+TGA G+G +A+ F
Sbjct: 1 QVVLVTGASRGLGAAIARSF 20
>gnl|CDD|187664 cd09763, DHRS1-like_SDR_c, human dehydrogenase/reductase (SDR
family) member 1 (DHRS1) -like, classical (c) SDRs.
This subgroup includes human DHRS1 and related proteins.
These are members of the classical SDR family, with a
canonical Gly-rich NAD-binding motif and the typical
YXXXK active site motif. However, the rest of the
catalytic tetrad is not strongly conserved. DHRS1 mRNA
has been detected in many tissues, liver, heart,
skeletal muscle, kidney and pancreas; a longer
transcript is predominantly expressed in the liver , a
shorter one in the heart. SDRs are a functionally
diverse family of oxidoreductases that have a single
domain with a structurally conserved Rossmann fold
(alpha/beta folding pattern with a central beta-sheet),
an NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRS are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes have a 3-glycine N-terminal
NAD(P)(H)-binding pattern (typically, TGxxxGxG in
classical SDRs and TGxxGxxG in extended SDRs), while
substrate binding is in the C-terminal region. A
critical catalytic Tyr residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering), is often found in a conserved YXXXK pattern.
In addition to the Tyr and Lys, there is often an
upstream Ser (Ser-138, 15-PGDH numbering) and/or an Asn
(Asn-107, 15-PGDH numbering) or additional Ser,
contributing to the active site. Substrates for these
enzymes include sugars, steroids, alcohols, and aromatic
compounds. The standard reaction mechanism is a proton
relay involving the conserved Tyr and Lys, as well as
Asn (or Ser). Some SDR family members, including 17
beta-hydroxysteroid dehydrogenase contain an additional
helix-turn-helix motif that is not generally found among
SDRs.
Length = 265
Score = 29.3 bits (66), Expect = 0.64
Identities = 13/22 (59%), Positives = 16/22 (72%)
Query: 99 LEGEIILLTGAGNGIGRELAKQ 120
L G+I L+TGA GIGR +A Q
Sbjct: 1 LSGKIALVTGASRGIGRGIALQ 22
>gnl|CDD|214833 smart00822, PKS_KR, This enzymatic domain is part of bacterial
polyketide synthases. It catalyses the first step in
the reductive modification of the beta-carbonyl centres
in the growing polyketide chain. It uses NADPH to reduce
the keto group to a hydroxy group.
Length = 180
Score = 29.0 bits (66), Expect = 0.67
Identities = 8/20 (40%), Positives = 12/20 (60%)
Query: 105 LLTGAGNGIGRELAKQFVQH 124
L+TG G+GR LA+ +
Sbjct: 4 LITGGLGGLGRALARWLAER 23
>gnl|CDD|187597 cd05338, DHRS1_HSDL2-like_SDR_c, human dehydrogenase/reductase (SDR
family) member 1 (DHRS1) and human hydroxysteroid
dehydrogenase-like protein 2 (HSDL2), classical (c)
SDRs. This subgroup includes human DHRS1 and human
HSDL2 and related proteins. These are members of the
classical SDR family, with a canonical Gly-rich
NAD-binding motif and the typical YXXXK active site
motif. However, the rest of the catalytic tetrad is not
strongly conserved. DHRS1 mRNA has been detected in many
tissues, liver, heart, skeletal muscle, kidney and
pancreas; a longer transcript is predominantly expressed
in the liver , a shorter one in the heart. HSDL2 may
play a part in fatty acid metabolism, as it is found in
peroxisomes. SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRS are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes have a 3-glycine N-terminal NAD(P)(H)-binding
pattern (typically, TGxxxGxG in classical SDRs and
TGxxGxxG in extended SDRs), while substrate binding is
in the C-terminal region. A critical catalytic Tyr
residue (Tyr-151, human 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) numbering), is often found in a
conserved YXXXK pattern. In addition to the Tyr and Lys,
there is often an upstream Ser (Ser-138, 15-PGDH
numbering) and/or an Asn (Asn-107, 15-PGDH numbering) or
additional Ser, contributing to the active site.
Substrates for these enzymes include sugars, steroids,
alcohols, and aromatic compounds. The standard reaction
mechanism is a proton relay involving the conserved Tyr
and Lys, as well as Asn (or Ser). Some SDR family
members, including 17 beta-hydroxysteroid dehydrogenase
contain an additional helix-turn-helix motif that is not
generally found among SDRs.
Length = 246
Score = 29.3 bits (66), Expect = 0.67
Identities = 12/32 (37%), Positives = 19/32 (59%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVC 130
L G++ +TGA GIGR +A + + T+V
Sbjct: 1 LSGKVAFVTGASRGIGRAIALRLAKAGATVVV 32
>gnl|CDD|181159 PRK07890, PRK07890, short chain dehydrogenase; Provisional.
Length = 258
Score = 29.2 bits (66), Expect = 0.71
Identities = 10/31 (32%), Positives = 21/31 (67%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLV 129
L+G++++++G G G+GR LA + + +V
Sbjct: 3 LKGKVVVVSGVGPGLGRTLAVRAARAGADVV 33
>gnl|CDD|182051 PRK09730, PRK09730, putative NAD(P)-binding oxidoreductase;
Provisional.
Length = 247
Score = 29.4 bits (66), Expect = 0.75
Identities = 15/50 (30%), Positives = 22/50 (44%), Gaps = 1/50 (2%)
Query: 103 IILLTGAGNGIGRELAKQFVQHKVTL-VCWDIDEKGNNETKQMLEEQGYK 151
I L+TG GIGR A Q T+ V + + E ++ + G K
Sbjct: 3 IALVTGGSRGIGRATALLLAQEGYTVAVNYQQNLHAAQEVVNLITQAGGK 52
>gnl|CDD|187601 cd05343, Mgc4172-like_SDR_c, human Mgc4172-like, classical (c)
SDRs. Human Mgc4172-like proteins, putative SDRs. These
proteins are members of the SDR family, with a canonical
active site tetrad and a typical Gly-rich NAD-binding
motif. SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRs are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes catalyze a wide range of activities including
the metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 250
Score = 29.0 bits (65), Expect = 0.84
Identities = 18/60 (30%), Positives = 29/60 (48%), Gaps = 2/60 (3%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLV-CWDIDEKGNNETKQMLEEQGYKNIHTYK 157
G + L+TGA GIG +A+ VQH + +V C +K + + GY + Y+
Sbjct: 4 WRGRVALVTGASVGIGAAVARALVQHGMKVVGCARRVDKIEALAAE-CQSAGYPTLFPYQ 62
>gnl|CDD|180462 PRK06198, PRK06198, short chain dehydrogenase; Provisional.
Length = 260
Score = 29.2 bits (66), Expect = 0.86
Identities = 9/25 (36%), Positives = 17/25 (68%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQ 123
L+G++ L+TG G+G +A+ F +
Sbjct: 4 LDGKVALVTGGTQGLGAAIARAFAE 28
>gnl|CDD|187614 cd05356, 17beta-HSD1_like_SDR_c, 17-beta-hydroxysteroid
dehydrogenases (17beta-HSDs) types -1, -3, and -12,
-like, classical (c) SDRs. This subgroup includes
various 17-beta-hydroxysteroid dehydrogenases and
3-ketoacyl-CoA reductase, these are members of the SDR
family, and contain the canonical active site tetrad and
glycine-rich NAD-binding motif of the classical SDRs.
3-ketoacyl-CoA reductase (KAR, aka 17beta-HSD type 12,
encoded by HSD17B12) acts in fatty acid elongation;
17beta- hydroxysteroid dehydrogenases are isozymes that
catalyze activation and inactivation of estrogen and
androgens, and include members of the SDR family.
17beta-estradiol dehydrogenase (aka 17beta-HSD type 1,
encoded by HSD17B1) converts estrone to estradiol.
Estradiol is the predominant female sex hormone.
17beta-HSD type 3 (aka testosterone
17-beta-dehydrogenase 3, encoded by HSD17B3) catalyses
the reduction of androstenedione to testosterone, it
also accepts estrogens as substrates. This subgroup also
contains a putative steroid dehydrogenase let-767 from
Caenorhabditis elegans, mutation in which results in
hypersensitivity to cholesterol limitation. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRS are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes have a
3-glycine N-terminal NAD(P)(H)-binding pattern
(typically, TGxxxGxG in classical SDRs and TGxxGxxG in
extended SDRs), while substrate binding is in the
C-terminal region. A critical catalytic Tyr residue
(Tyr-151, human 15-hydroxyprostaglandin dehydrogenase
(15-PGDH) numbering), is often found in a conserved
YXXXK pattern. In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) or additional
Ser, contributing to the active site. Substrates for
these enzymes include sugars, steroids, alcohols, and
aromatic compounds. The standard reaction mechanism is a
proton relay involving the conserved Tyr and Lys, as
well as Asn (or Ser). Some SDR family members, including
17 beta-hydroxysteroid dehydrogenase contain an
additional helix-turn-helix motif that is not generally
found among SDRs.
Length = 239
Score = 29.1 bits (66), Expect = 0.90
Identities = 9/42 (21%), Positives = 22/42 (52%)
Query: 107 TGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQ 148
TGA +GIG+ A++ + ++ ++ + + +EE+
Sbjct: 7 TGATDGIGKAYAEELAKRGFNVILISRTQEKLDAVAKEIEEK 48
>gnl|CDD|236216 PRK08277, PRK08277, D-mannonate oxidoreductase; Provisional.
Length = 278
Score = 29.1 bits (66), Expect = 1.0
Identities = 13/53 (24%), Positives = 26/53 (49%), Gaps = 2/53 (3%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDI-DEKGNNETKQMLEEQG 149
SL+G++ ++TG G +G +AK+ + + D EK + ++ G
Sbjct: 7 SLKGKVAVITGGGGVLGGAMAKELARAGAKVAILDRNQEKAEAVVAE-IKAAG 58
>gnl|CDD|181349 PRK08278, PRK08278, short chain dehydrogenase; Provisional.
Length = 273
Score = 28.7 bits (65), Expect = 1.0
Identities = 10/23 (43%), Positives = 14/23 (60%)
Query: 97 KSLEGEIILLTGAGNGIGRELAK 119
SL G+ + +TGA GIG +A
Sbjct: 2 MSLSGKTLFITGASRGIGLAIAL 24
>gnl|CDD|181298 PRK08219, PRK08219, short chain dehydrogenase; Provisional.
Length = 227
Score = 28.7 bits (65), Expect = 1.0
Identities = 8/18 (44%), Positives = 12/18 (66%)
Query: 103 IILLTGAGNGIGRELAKQ 120
L+TGA GIG +A++
Sbjct: 5 TALITGASRGIGAAIARE 22
>gnl|CDD|235725 PRK06179, PRK06179, short chain dehydrogenase; Provisional.
Length = 270
Score = 28.7 bits (65), Expect = 1.1
Identities = 9/22 (40%), Positives = 15/22 (68%)
Query: 103 IILLTGAGNGIGRELAKQFVQH 124
+ L+TGA +GIGR A++ +
Sbjct: 6 VALVTGASSGIGRATAEKLARA 27
>gnl|CDD|236145 PRK08063, PRK08063, enoyl-(acyl carrier protein) reductase;
Provisional.
Length = 250
Score = 28.5 bits (64), Expect = 1.2
Identities = 8/25 (32%), Positives = 16/25 (64%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQ 123
G++ L+TG+ GIG+ +A + +
Sbjct: 2 FSGKVALVTGSSRGIGKAIALRLAE 26
>gnl|CDD|166421 PLN02780, PLN02780, ketoreductase/ oxidoreductase.
Length = 320
Score = 28.7 bits (64), Expect = 1.2
Identities = 18/58 (31%), Positives = 32/58 (55%), Gaps = 3/58 (5%)
Query: 74 LLIIKLLYSALESILLTLIPPSEKSLE--GEIILLTGAGNGIGRELAKQFVQHKVTLV 129
L I+K ++ L + + + P+ K+L+ G L+TG +GIG+ A Q + + LV
Sbjct: 25 LSILKFFFTILNWVYVYFLRPA-KNLKKYGSWALVTGPTDGIGKGFAFQLARKGLNLV 81
>gnl|CDD|180448 PRK06182, PRK06182, short chain dehydrogenase; Validated.
Length = 273
Score = 28.8 bits (65), Expect = 1.2
Identities = 9/26 (34%), Positives = 16/26 (61%), Gaps = 2/26 (7%)
Query: 103 IILLTGAGNGIGRELAKQFVQ--HKV 126
+ L+TGA +GIG+ A++ + V
Sbjct: 5 VALVTGASSGIGKATARRLAAQGYTV 30
>gnl|CDD|237219 PRK12827, PRK12827, short chain dehydrogenase; Provisional.
Length = 249
Score = 28.5 bits (64), Expect = 1.3
Identities = 9/26 (34%), Positives = 15/26 (57%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQ 123
SL+ +L+TG G+GR +A +
Sbjct: 3 SLDSRRVLITGGSGGLGRAIAVRLAA 28
>gnl|CDD|236116 PRK07856, PRK07856, short chain dehydrogenase; Provisional.
Length = 252
Score = 28.7 bits (65), Expect = 1.3
Identities = 13/36 (36%), Positives = 20/36 (55%), Gaps = 1/36 (2%)
Query: 96 EKSLEGEIILLTGAGNGIGRELAKQFVQHKVT-LVC 130
L G ++L+TG GIG +A+ F+ T +VC
Sbjct: 1 NLDLTGRVVLVTGGTRGIGAGIARAFLAAGATVVVC 36
>gnl|CDD|181188 PRK07985, PRK07985, oxidoreductase; Provisional.
Length = 294
Score = 28.8 bits (64), Expect = 1.3
Identities = 16/57 (28%), Positives = 30/57 (52%), Gaps = 2/57 (3%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQH--KVTLVCWDIDEKGNNETKQMLEEQGYKNI 153
L+ L+TG +GIGR A + + V + ++E+ + K+++EE G K +
Sbjct: 47 LKDRKALVTGGDSGIGRAAAIAYAREGADVAISYLPVEEEDAQDVKKIIEECGRKAV 103
>gnl|CDD|187639 cd08934, CAD_SDR_c, clavulanic acid dehydrogenase (CAD), classical
(c) SDR. CAD catalyzes the NADP-dependent reduction of
clavulanate-9-aldehyde to clavulanic acid, a
beta-lactamase inhibitor. SDRs are a functionally
diverse family of oxidoreductases that have a single
domain with a structurally conserved Rossmann fold
(alpha/beta folding pattern with a central beta-sheet),
an NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRs are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes catalyze a wide range of
activities including the metabolism of steroids,
cofactors, carbohydrates, lipids, aromatic compounds,
and amino acids, and act in redox sensing. Classical
SDRs have an TGXXX[AG]XG cofactor binding motif and a
YXXXK active site motif, with the Tyr residue of the
active site motif serving as a critical catalytic
residue (Tyr-151, human 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) numbering). In addition to the
Tyr and Lys, there is often an upstream Ser (Ser-138,
15-PGDH numbering) and/or an Asn (Asn-107, 15-PGDH
numbering) contributing to the active site; while
substrate binding is in the C-terminal region, which
determines specificity. The standard reaction mechanism
is a 4-pro-S hydride transfer and proton relay involving
the conserved Tyr and Lys, a water molecule stabilized
by Asn, and nicotinamide. Extended SDRs have additional
elements in the C-terminal region, and typically have a
TGXXGXXG cofactor binding motif. Complex (multidomain)
SDRs such as ketoreductase domains of fatty acid
synthase have a GGXGXXG NAD(P)-binding motif and an
altered active site motif (YXXXN). Fungal type ketoacyl
reductases have a TGXXXGX(1-2)G NAD(P)-binding motif.
Some atypical SDRs have lost catalytic activity and/or
have an unusual NAD(P)-binding motif and missing or
unusual active site residues. Reactions catalyzed within
the SDR family include isomerization, decarboxylation,
epimerization, C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 243
Score = 28.7 bits (64), Expect = 1.3
Identities = 12/26 (46%), Positives = 18/26 (69%), Gaps = 4/26 (15%)
Query: 99 LEGEIILLTGAGNGIG----RELAKQ 120
L+G++ L+TGA +GIG R LA +
Sbjct: 1 LQGKVALVTGASSGIGEATARALAAE 26
>gnl|CDD|237220 PRK12828, PRK12828, short chain dehydrogenase; Provisional.
Length = 239
Score = 28.6 bits (64), Expect = 1.4
Identities = 10/27 (37%), Positives = 16/27 (59%)
Query: 95 SEKSLEGEIILLTGAGNGIGRELAKQF 121
E SL+G+++ +TG G+GR A
Sbjct: 1 MEHSLQGKVVAITGGFGGLGRATAAWL 27
>gnl|CDD|180753 PRK06924, PRK06924, short chain dehydrogenase; Provisional.
Length = 251
Score = 28.5 bits (64), Expect = 1.4
Identities = 10/52 (19%), Positives = 22/52 (42%), Gaps = 2/52 (3%)
Query: 104 ILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYKNIHT 155
+++TG G+G +A Q ++ ++ I N E ++ E+
Sbjct: 4 VIITGTSQGLGEAIANQLLEKGTHVIS--ISRTENKELTKLAEQYNSNLTFH 53
>gnl|CDD|180774 PRK06953, PRK06953, short chain dehydrogenase; Provisional.
Length = 222
Score = 28.5 bits (64), Expect = 1.5
Identities = 9/18 (50%), Positives = 13/18 (72%)
Query: 104 ILLTGAGNGIGRELAKQF 121
+L+ GA GIGRE +Q+
Sbjct: 4 VLIVGASRGIGREFVRQY 21
>gnl|CDD|184316 PRK13771, PRK13771, putative alcohol dehydrogenase; Provisional.
Length = 334
Score = 28.5 bits (64), Expect = 1.5
Identities = 11/25 (44%), Positives = 17/25 (68%), Gaps = 3/25 (12%)
Query: 100 EGEIILLTGAGNGIGR---ELAKQF 121
+GE +L+TGAG G+G ++AK
Sbjct: 162 KGETVLVTGAGGGVGIHAIQVAKAL 186
>gnl|CDD|181077 PRK07677, PRK07677, short chain dehydrogenase; Provisional.
Length = 252
Score = 28.5 bits (64), Expect = 1.5
Identities = 11/47 (23%), Positives = 27/47 (57%)
Query: 101 GEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEE 147
+++++TG +G+G+ +AK+F + +V ++ E K +E+
Sbjct: 1 EKVVIITGGSSGMGKAMAKRFAEEGANVVITGRTKEKLEEAKLEIEQ 47
>gnl|CDD|233808 TIGR02277, PaaX_trns_reg, phenylacetic acid degradation operon
negative regulatory protein PaaX. This transcriptional
regulator is always found in association with operons
believed to be involved in the degradation of
phenylacetic acid. The gene product has been shown to
bind to the promoter sites and repress their
transcription [Regulatory functions, DNA interactions].
Length = 280
Score = 28.2 bits (63), Expect = 1.5
Identities = 15/54 (27%), Positives = 22/54 (40%), Gaps = 9/54 (16%)
Query: 82 SALESILLTLIPPSEKSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDE 135
S L + TL+ + S AG G + LA++ CWD+DE
Sbjct: 127 SPLPEQVETLLEKYDISPAVHFRCEDAAGMGELKALAEK---------CWDLDE 171
>gnl|CDD|187578 cd05269, TMR_SDR_a, triphenylmethane reductase (TMR)-like proteins,
NMRa-like, atypical (a) SDRs. TMR is an atypical
NADP-binding protein of the SDR family. It lacks the
active site residues of the SDRs but has a glycine rich
NAD(P)-binding motif that matches the extended SDRs.
Proteins in this subgroup however, are more similar in
length to the classical SDRs. TMR was identified as a
reducer of triphenylmethane dyes, important
environmental pollutants. This subgroup also includes
Escherichia coli NADPH-dependent quinine oxidoreductase
(QOR2), which catalyzes two-electron reduction of
quinone; but is unlikely to play a major role in
protecting against quinone cytotoxicity. Atypical SDRs
are distinct from classical SDRs. Atypical SDRs include
biliverdin IX beta reductase (BVR-B,aka flavin
reductase), NMRa (a negative transcriptional regulator
of various fungi), progesterone 5-beta-reductase like
proteins, phenylcoumaran benzylic ether and
pinoresinol-lariciresinol reductases, phenylpropene
synthases, eugenol synthase, triphenylmethane reductase,
isoflavone reductases, and others. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold, an NAD(P)(H)-binding region, and a structurally
diverse C-terminal region. Sequence identity between
different SDR enzymes is typically in the 15-30% range;
they catalyze a wide range of activities including the
metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase numbering). In
addition to the Tyr and Lys, there is often an upstream
Ser and/or an Asn, contributing to the active site;
while substrate binding is in the C-terminal region,
which determines specificity. The standard reaction
mechanism is a 4-pro-S hydride transfer and proton relay
involving the conserved Tyr and Lys, a water molecule
stabilized by Asn, and nicotinamide. In addition to the
Rossmann fold core region typical of all SDRs, extended
SDRs have a less conserved C-terminal extension of
approximately 100 amino acids, and typically have a
TGXXGXXG cofactor binding motif. Complex (multidomain)
SDRs such as ketoreductase domains of fatty acid
synthase have a GGXGXXG NAD(P)-binding motif and an
altered active site motif (YXXXN). Fungal type ketoacyl
reductases have a TGXXXGX(1-2)G NAD(P)-binding motif.
Length = 272
Score = 28.4 bits (64), Expect = 1.6
Identities = 7/27 (25%), Positives = 14/27 (51%)
Query: 104 ILLTGAGNGIGRELAKQFVQHKVTLVC 130
IL+TGA +G + + + ++V
Sbjct: 1 ILVTGATGKLGTAVVELLLAKVASVVA 27
>gnl|CDD|180822 PRK07069, PRK07069, short chain dehydrogenase; Validated.
Length = 251
Score = 28.1 bits (63), Expect = 1.6
Identities = 10/26 (38%), Positives = 16/26 (61%), Gaps = 2/26 (7%)
Query: 105 LLTGAGNGIGRELAKQFVQH--KVTL 128
+TGA G+GR +A++ + KV L
Sbjct: 3 FITGAAGGLGRAIARRMAEQGAKVFL 28
>gnl|CDD|223677 COG0604, Qor, NADPH:quinone reductase and related Zn-dependent
oxidoreductases [Energy production and conversion /
General function prediction only].
Length = 326
Score = 28.5 bits (64), Expect = 1.7
Identities = 17/61 (27%), Positives = 30/61 (49%), Gaps = 10/61 (16%)
Query: 101 GEIILLTGAGNGIGR---ELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYKNIHTYK 157
GE +L+ GA G+G +LAK V +V ++E ++L+E G ++ Y+
Sbjct: 143 GETVLVHGAAGGVGSAAIQLAKALGATVVAVV-------SSSEKLELLKELGADHVINYR 195
Query: 158 R 158
Sbjct: 196 E 196
>gnl|CDD|235990 PRK07326, PRK07326, short chain dehydrogenase; Provisional.
Length = 237
Score = 28.1 bits (63), Expect = 1.9
Identities = 12/33 (36%), Positives = 20/33 (60%), Gaps = 2/33 (6%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQH--KVTL 128
SL+G++ L+TG GIG +A+ + KV +
Sbjct: 3 SLKGKVALITGGSKGIGFAIAEALLAEGYKVAI 35
>gnl|CDD|187631 cd05373, SDR_c10, classical (c) SDR, subgroup 10. This subgroup
resembles the classical SDRs, but has an incomplete
match to the canonical glycine rich NAD-binding motif
and lacks the typical active site tetrad (instead of the
critical active site Tyr, it has Phe, but contains the
nearby Lys). SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRs are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes catalyze a wide range of activities including
the metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 238
Score = 28.1 bits (63), Expect = 1.9
Identities = 7/20 (35%), Positives = 14/20 (70%)
Query: 103 IILLTGAGNGIGRELAKQFV 122
+ + GAG+G+G +A++F
Sbjct: 1 VAAVVGAGDGLGAAIARRFA 20
>gnl|CDD|181131 PRK07814, PRK07814, short chain dehydrogenase; Provisional.
Length = 263
Score = 28.2 bits (63), Expect = 1.9
Identities = 9/26 (34%), Positives = 17/26 (65%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQ 123
L+ ++ ++TGAG G+G +A F +
Sbjct: 7 RLDDQVAVVTGAGRGLGAAIALAFAE 32
>gnl|CDD|132250 TIGR03206, benzo_BadH, 2-hydroxycyclohexanecarboxyl-CoA
dehydrogenase. Members of this protein family are the
enzyme 2-hydroxycyclohexanecarboxyl-CoA dehydrogenase.
The enzymatic properties were confirmed experimentally
in Rhodopseudomonas palustris; the enzyme is
homotetrameric, and not sensitive to oxygen. This enzyme
is part of proposed pathway for degradation of
benzoyl-CoA to 3-hydroxypimeloyl-CoA that differs from
the analogous in Thauera aromatica. It also may occur in
degradation of the non-aromatic compound
cyclohexane-1-carboxylate.
Length = 250
Score = 28.0 bits (62), Expect = 2.0
Identities = 10/51 (19%), Positives = 25/51 (49%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQG 149
L+ + ++TG G GIG ++F + + +D++ + + + +G
Sbjct: 1 LKDKTAIVTGGGGGIGGATCRRFAEEGAKVAVFDLNREAAEKVAADIRAKG 51
>gnl|CDD|219957 pfam08659, KR, KR domain. This enzymatic domain is part of
bacterial polyketide synthases and catalyzes the first
step in the reductive modification of the beta-carbonyl
centres in the growing polyketide chain. It uses NADPH
to reduce the keto group to a hydroxy group.
Length = 181
Score = 27.9 bits (63), Expect = 2.1
Identities = 8/20 (40%), Positives = 12/20 (60%)
Query: 105 LLTGAGNGIGRELAKQFVQH 124
L+TG G+G ELA+ +
Sbjct: 4 LVTGGLGGLGLELARWLAER 23
>gnl|CDD|187629 cd05371, HSD10-like_SDR_c, 17hydroxysteroid dehydrogenase type 10
(HSD10)-like, classical (c) SDRs. HSD10, also known as
amyloid-peptide-binding alcohol dehydrogenase (ABAD),
was previously identified as a L-3-hydroxyacyl-CoA
dehydrogenase, HADH2. In fatty acid metabolism, HADH2
catalyzes the third step of beta-oxidation, the
conversion of a hydroxyl to a keto group in the
NAD-dependent oxidation of L-3-hydroxyacyl CoA. In
addition to alcohol dehydrogenase and HADH2 activites,
HSD10 has steroid dehydrogenase activity. Although the
mechanism is unclear, HSD10 is implicated in the
formation of amyloid beta-petide in the brain (which is
linked to the development of Alzheimer's disease).
Although HSD10 is normally concentrated in the
mitochondria, in the presence of amyloid beta-peptide it
translocates into the plasma membrane, where it's action
may generate cytotoxic aldehydes and may lower estrogen
levels through its use of 17-beta-estradiol as a
substrate. HSD10 is a member of the SRD family, but
differs from other SDRs by the presence of two
insertions of unknown function. SDRs are a functionally
diverse family of oxidoreductases that have a single
domain with a structurally conserved Rossmann fold
(alpha/beta folding pattern with a central beta-sheet),
an NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Classical SDRs are typically about
250 residues long, while extended SDRs are approximately
350 residues. Sequence identity between different SDR
enzymes are typically in the 15-30% range, but the
enzymes share the Rossmann fold NAD-binding motif and
characteristic NAD-binding and catalytic sequence
patterns. These enzymes catalyze a wide range of
activities including the metabolism of steroids,
cofactors, carbohydrates, lipids, aromatic compounds,
and amino acids, and act in redox sensing. Classical
SDRs have an TGXXX[AG]XG cofactor binding motif and a
YXXXK active site motif, with the Tyr residue of the
active site motif serving as a critical catalytic
residue (Tyr-151, human 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) numbering). In addition to the
Tyr and Lys, there is often an upstream Ser (Ser-138,
15-PGDH numbering) and/or an Asn (Asn-107, 15-PGDH
numbering) contributing to the active site; while
substrate binding is in the C-terminal region, which
determines specificity. The standard reaction mechanism
is a 4-pro-S hydride transfer and proton relay involving
the conserved Tyr and Lys, a water molecule stabilized
by Asn, and nicotinamide. Extended SDRs have additional
elements in the C-terminal region, and typically have a
TGXXGXXG cofactor binding motif. Complex (multidomain)
SDRs such as ketoreductase domains of fatty acid
synthase have a GGXGXXG NAD(P)-binding motif and an
altered active site motif (YXXXN). Fungal type ketoacyl
reductases have a TGXXXGX(1-2)G NAD(P)-binding motif.
Some atypical SDRs have lost catalytic activity and/or
have an unusual NAD(P)-binding motif and missing or
unusual active site residues. Reactions catalyzed within
the SDR family include isomerization, decarboxylation,
epimerization, C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 252
Score = 28.0 bits (63), Expect = 2.3
Identities = 9/44 (20%), Positives = 21/44 (47%), Gaps = 1/44 (2%)
Query: 100 EGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDI-DEKGNNETK 142
+G + ++TG +G+G ++ + +V D+ + G K
Sbjct: 1 KGLVAVVTGGASGLGLATVERLLAQGAKVVILDLPNSPGETVAK 44
>gnl|CDD|234422 TIGR03971, SDR_subfam_1, oxidoreductase, SDR family. Members of
this protein subfamily are putative oxidoreductases
belonging to the larger SDR family. Members of the
present subfamily may occur several to a genome and are
largely restricted to genomes that contain members of
families TIGR03962, TIGR03967, and TIGR03969. Many
members have been annotated by homology as carveol
dehydrogenases.
Length = 265
Score = 27.9 bits (62), Expect = 2.3
Identities = 11/35 (31%), Positives = 18/35 (51%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDI 133
LEG++ +TGA G GR A + ++ D+
Sbjct: 1 LEGKVAFITGAARGQGRAHAVRLAAEGADIIAIDL 35
>gnl|CDD|225370 COG2813, RsmC, 16S RNA G1207 methylase RsmC [Translation, ribosomal
structure and biogenesis].
Length = 300
Score = 28.0 bits (63), Expect = 2.4
Identities = 19/49 (38%), Positives = 29/49 (59%), Gaps = 7/49 (14%)
Query: 87 ILLTLIPPSEKSLEGEIILLTGAGNG-IGRELAKQFVQHKVTLVCWDID 134
+LL +PP G+++ L G G G +G LAK+ Q K+TLV D++
Sbjct: 149 LLLETLPPDLG---GKVLDL-GCGYGVLGLVLAKKSPQAKLTLV--DVN 191
>gnl|CDD|135642 PRK05884, PRK05884, short chain dehydrogenase; Provisional.
Length = 223
Score = 27.9 bits (62), Expect = 2.4
Identities = 13/28 (46%), Positives = 18/28 (64%), Gaps = 2/28 (7%)
Query: 104 ILLTGAGNGIGRELAKQFVQ--HKVTLV 129
+L+TG +GR +A+ F HKVTLV
Sbjct: 3 VLVTGGDTDLGRTIAEGFRNDGHKVTLV 30
>gnl|CDD|200085 TIGR01214, rmlD, dTDP-4-dehydrorhamnose reductase. This enzyme
catalyzes the last of 4 steps in making dTDP-rhamnose, a
precursor of LPS core antigen, O-antigen, etc [Cell
envelope, Biosynthesis and degradation of surface
polysaccharides and lipopolysaccharides].
Length = 287
Score = 27.8 bits (62), Expect = 2.5
Identities = 12/36 (33%), Positives = 17/36 (47%), Gaps = 5/36 (13%)
Query: 104 ILLTGAGNGIGRELAKQFVQHKVTLVC-----WDID 134
IL+TGA +GREL +Q +V D+
Sbjct: 2 ILITGANGQLGRELVQQLSPEGRVVVALTRSQLDLT 37
>gnl|CDD|181517 PRK08642, fabG, 3-ketoacyl-(acyl-carrier-protein) reductase;
Provisional.
Length = 253
Score = 27.7 bits (62), Expect = 2.6
Identities = 7/25 (28%), Positives = 15/25 (60%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQ 123
+ + +L+TG G+G +A+ F +
Sbjct: 3 ISEQTVLVTGGSRGLGAAIARAFAR 27
>gnl|CDD|187615 cd05357, PR_SDR_c, pteridine reductase (PR), classical (c) SDRs.
Pteridine reductases (PRs), members of the SDR family,
catalyzes the NAD-dependent reduction of folic acid,
dihydrofolate and related compounds. In Leishmania,
pteridine reductase (PTR1) acts to circumvent the
anti-protozoan drugs that attack dihydrofolate reductase
activity. Proteins in this subgroup have an N-terminal
NAD-binding motif and a YxxxK active site motif, but
have an Asp instead of the usual upstream catalytic Ser.
SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRS are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes have a 3-glycine N-terminal NAD(P)(H)-binding
pattern (typically, TGxxxGxG in classical SDRs and
TGxxGxxG in extended SDRs), while substrate binding is
in the C-terminal region. A critical catalytic Tyr
residue (Tyr-151, human 15-hydroxyprostaglandin
dehydrogenase (15-PGDH) numbering), is often found in a
conserved YXXXK pattern. In addition to the Tyr and Lys,
there is often an upstream Ser (Ser-138, 15-PGDH
numbering) and/or an Asn (Asn-107, 15-PGDH numbering) or
additional Ser, contributing to the active site.
Substrates for these enzymes include sugars, steroids,
alcohols, and aromatic compounds. The standard reaction
mechanism is a proton relay involving the conserved Tyr
and Lys, as well as Asn (or Ser). Some SDR family
members, including 17 beta-hydroxysteroid dehydrogenase
contain an additional helix-turn-helix motif that is not
generally found among SDRs.
Length = 234
Score = 27.6 bits (62), Expect = 2.7
Identities = 9/26 (34%), Positives = 13/26 (50%)
Query: 104 ILLTGAGNGIGRELAKQFVQHKVTLV 129
L+TGA IGR +A+ +V
Sbjct: 3 ALVTGAAKRIGRAIAEALAAEGYRVV 28
>gnl|CDD|222146 pfam13460, NAD_binding_10, NADH(P)-binding.
Length = 182
Score = 27.3 bits (61), Expect = 3.0
Identities = 10/29 (34%), Positives = 15/29 (51%), Gaps = 2/29 (6%)
Query: 104 ILLTGAGNGIGRELAKQFVQ--HKVTLVC 130
I + GA GR L K+ + H+VT +
Sbjct: 1 IAVIGATGKTGRRLVKELLARGHQVTALS 29
>gnl|CDD|181721 PRK09242, PRK09242, tropinone reductase; Provisional.
Length = 257
Score = 27.4 bits (61), Expect = 3.0
Identities = 11/24 (45%), Positives = 17/24 (70%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQF 121
L+G+ L+TGA GIG +A++F
Sbjct: 6 RLDGQTALITGASKGIGLAIAREF 29
>gnl|CDD|180773 PRK06949, PRK06949, short chain dehydrogenase; Provisional.
Length = 258
Score = 27.4 bits (61), Expect = 3.4
Identities = 10/21 (47%), Positives = 16/21 (76%)
Query: 99 LEGEIILLTGAGNGIGRELAK 119
LEG++ L+TGA +G+G A+
Sbjct: 7 LEGKVALVTGASSGLGARFAQ 27
>gnl|CDD|236229 PRK08303, PRK08303, short chain dehydrogenase; Provisional.
Length = 305
Score = 27.3 bits (61), Expect = 3.8
Identities = 12/37 (32%), Positives = 18/37 (48%)
Query: 94 PSEKSLEGEIILLTGAGNGIGRELAKQFVQHKVTLVC 130
P K L G++ L+ GA G GR +A + T+
Sbjct: 1 PMMKPLRGKVALVAGATRGAGRGIAVELGAAGATVYV 37
>gnl|CDD|168186 PRK05693, PRK05693, short chain dehydrogenase; Provisional.
Length = 274
Score = 27.1 bits (60), Expect = 3.8
Identities = 10/19 (52%), Positives = 14/19 (73%)
Query: 103 IILLTGAGNGIGRELAKQF 121
++L+TG +GIGR LA F
Sbjct: 3 VVLITGCSSGIGRALADAF 21
>gnl|CDD|135631 PRK05867, PRK05867, short chain dehydrogenase; Provisional.
Length = 253
Score = 27.3 bits (60), Expect = 3.8
Identities = 11/25 (44%), Positives = 17/25 (68%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQ 123
L G+ L+TGA GIG+ +A +V+
Sbjct: 7 LHGKRALITGASTGIGKRVALAYVE 31
>gnl|CDD|180446 PRK06180, PRK06180, short chain dehydrogenase; Provisional.
Length = 277
Score = 26.8 bits (60), Expect = 4.6
Identities = 10/26 (38%), Positives = 15/26 (57%), Gaps = 2/26 (7%)
Query: 103 IILLTGAGNGIGRELAKQFVQ--HKV 126
L+TG +G GR LA+ + H+V
Sbjct: 6 TWLITGVSSGFGRALAQAALAAGHRV 31
>gnl|CDD|235703 PRK06125, PRK06125, short chain dehydrogenase; Provisional.
Length = 259
Score = 26.9 bits (60), Expect = 4.7
Identities = 12/31 (38%), Positives = 16/31 (51%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLV 129
L G+ +L+TGA GIG A+ F L
Sbjct: 5 LAGKRVLITGASKGIGAAAAEAFAAEGCHLH 35
>gnl|CDD|180413 PRK06128, PRK06128, oxidoreductase; Provisional.
Length = 300
Score = 27.1 bits (60), Expect = 4.7
Identities = 18/57 (31%), Positives = 30/57 (52%), Gaps = 2/57 (3%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQH--KVTLVCWDIDEKGNNETKQMLEEQGYKNI 153
L+G L+TGA +GIGR A F + + L +E+ E Q+++ +G K +
Sbjct: 53 LQGRKALITGADSGIGRATAIAFAREGADIALNYLPEEEQDAAEVVQLIQAEGRKAV 109
>gnl|CDD|235737 PRK06197, PRK06197, short chain dehydrogenase; Provisional.
Length = 306
Score = 26.9 bits (60), Expect = 4.8
Identities = 13/40 (32%), Positives = 19/40 (47%), Gaps = 3/40 (7%)
Query: 101 GEIILLTGAGNGIGRELAKQFVQH--KVTLVCWDIDEKGN 138
G + ++TGA G+G E A V L ++D KG
Sbjct: 16 GRVAVVTGANTGLGYETAAALAAKGAHVVLAVRNLD-KGK 54
>gnl|CDD|223528 COG0451, WcaG, Nucleoside-diphosphate-sugar epimerases [Cell
envelope biogenesis, outer membrane / Carbohydrate
transport and metabolism].
Length = 314
Score = 26.8 bits (59), Expect = 4.9
Identities = 9/29 (31%), Positives = 14/29 (48%), Gaps = 2/29 (6%)
Query: 104 ILLTGAGNGIGRELAKQFVQ--HKVTLVC 130
IL+TG IG L ++ + H V +
Sbjct: 3 ILVTGGAGFIGSHLVERLLAAGHDVRGLD 31
>gnl|CDD|187568 cd05258, CDP_TE_SDR_e, CDP-tyvelose 2-epimerase, extended (e) SDRs.
CDP-tyvelose 2-epimerase is a tetrameric SDR that
catalyzes the conversion of CDP-D-paratose to
CDP-D-tyvelose, the last step in tyvelose biosynthesis.
This subgroup is a member of the extended SDR subfamily,
with a characteristic active site tetrad and NAD-binding
motif. Extended SDRs are distinct from classical SDRs.
In addition to the Rossmann fold (alpha/beta folding
pattern with a central beta-sheet) core region typical
of all SDRs, extended SDRs have a less conserved
C-terminal extension of approximately 100 amino acids.
Extended SDRs are a diverse collection of proteins, and
include isomerases, epimerases, oxidoreductases, and
lyases; they typically have a TGXXGXXG cofactor binding
motif. SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold, an
NAD(P)(H)-binding region, and a structurally diverse
C-terminal region. Sequence identity between different
SDR enzymes is typically in the 15-30% range; they
catalyze a wide range of activities including the
metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase numbering). In
addition to the Tyr and Lys, there is often an upstream
Ser and/or an Asn, contributing to the active site;
while substrate binding is in the C-terminal region,
which determines specificity. The standard reaction
mechanism is a 4-pro-S hydride transfer and proton relay
involving the conserved Tyr and Lys, a water molecule
stabilized by Asn, and nicotinamide. Atypical SDRs
generally lack the catalytic residues characteristic of
the SDRs, and their glycine-rich NAD(P)-binding motif is
often different from the forms normally seen in
classical or extended SDRs. Complex (multidomain) SDRs
such as ketoreductase domains of fatty acid synthase
have a GGXGXXG NAD(P)-binding motif and an altered
active site motif (YXXXN). Fungal type ketoacyl
reductases have a TGXXXGX(1-2)G NAD(P)-binding motif.
Length = 337
Score = 26.9 bits (60), Expect = 5.8
Identities = 15/57 (26%), Positives = 27/57 (47%), Gaps = 5/57 (8%)
Query: 104 ILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEK----GNNE-TKQMLEEQGYKNIHT 155
+L+TG IG LA+ F++ ++ +D + GN K E+ G + +H
Sbjct: 3 VLITGGAGFIGSNLARFFLKQGWEVIGFDNLMRRGSFGNLAWLKANREDGGVRFVHG 59
>gnl|CDD|227017 COG4671, COG4671, Predicted glycosyl transferase [General function
prediction only].
Length = 400
Score = 26.6 bits (59), Expect = 6.0
Identities = 11/40 (27%), Positives = 19/40 (47%)
Query: 84 LESILLTLIPPSEKSLEGEIILLTGAGNGIGRELAKQFVQ 123
++ L L P ++ EG IL++ G G EL + +
Sbjct: 202 VQRSLPHLPLPPHEAPEGFDILVSVGGGADGAELIETALA 241
>gnl|CDD|239260 cd02962, TMX2, TMX2 family; composed of proteins similar to human
TMX2, a 372-amino acid TRX-related transmembrane
protein, identified and characterized through the
cloning of its cDNA from a human fetal library. It
contains a TRX domain but the redox active CXXC motif
is replaced with SXXC. Sequence analysis predicts that
TMX2 may be a Type I membrane protein, with its
C-terminal half protruding on the luminal side of the
endoplasmic reticulum (ER). In addition to the TRX
domain, transmembrane region and ER-retention signal,
TMX2 also contains a Myb DNA-binding domain repeat
signature and a dileucine motif in the tail.
Length = 152
Score = 26.2 bits (58), Expect = 6.2
Identities = 16/67 (23%), Positives = 27/67 (40%), Gaps = 12/67 (17%)
Query: 18 LLYSALESILLTLIPP------------SEKSLEGEIILSPTPSHFTDFSTSWSQSMTAL 65
LLY L ++ L P + K+LE E+ + +F T+WS
Sbjct: 6 LLYLLLCIVVYLLAPQPLYMGPEHIKYFTPKTLEEELERDKRVTWLVEFFTTWSPECVNF 65
Query: 66 SIILSEL 72
+ + +EL
Sbjct: 66 APVFAEL 72
>gnl|CDD|212496 cd11730, Tthb094_like_SDR_c, Tthb094 and related proteins,
classical (c) SDRs. Tthb094 from Thermus Thermophilus
is a classical SDR which binds NADP. Members of this
subgroup contain the YXXXK active site characteristic of
SDRs. Also, an upstream Asn residue of the canonical
catalytic tetrad is partially conserved in this subgroup
of proteins of undetermined function. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold (alpha/beta folding pattern with a central
beta-sheet), an NAD(P)(H)-binding region, and a
structurally diverse C-terminal region. Classical SDRs
are typically about 250 residues long, while extended
SDRs are approximately 350 residues. Sequence identity
between different SDR enzymes are typically in the
15-30% range, but the enzymes share the Rossmann fold
NAD-binding motif and characteristic NAD-binding and
catalytic sequence patterns. These enzymes catalyze a
wide range of activities including the metabolism of
steroids, cofactors, carbohydrates, lipids, aromatic
compounds, and amino acids, and act in redox sensing.
Classical SDRs have an TGXXX[AG]XG cofactor binding
motif and a YXXXK active site motif, with the Tyr
residue of the active site motif serving as a critical
catalytic residue (Tyr-151, human prostaglandin
dehydrogenase (PGDH) numbering). In addition to the Tyr
and Lys, there is often an upstream Ser (Ser-138, PGDH
numbering) and/or an Asn (Asn-107, PGDH numbering)
contributing to the active site; while substrate binding
is in the C-terminal region, which determines
specificity. The standard reaction mechanism is a
4-pro-S hydride transfer and proton relay involving the
conserved Tyr and Lys, a water molecule stabilized by
Asn, and nicotinamide. Extended SDRs have additional
elements in the C-terminal region, and typically have a
TGXXGXXG cofactor binding motif. Complex (multidomain)
SDRs such as ketoreductase domains of fatty acid
synthase have a GGXGXXG NAD(P)-binding motif and an
altered active site motif (YXXXN). Fungal type ketoacyl
reductases have a TGXXXGX(1-2)G NAD(P)-binding motif.
Some atypical SDRs have lost catalytic activity and/or
have an unusual NAD(P)-binding motif and missing or
unusual active site residues. Reactions catalyzed within
the SDR family include isomerization, decarboxylation,
epimerization, C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 206
Score = 26.3 bits (58), Expect = 6.9
Identities = 10/27 (37%), Positives = 14/27 (51%), Gaps = 2/27 (7%)
Query: 105 LLTGAGNGIGRELAKQFV--QHKVTLV 129
L+ GA GIGR LA+ ++ L
Sbjct: 2 LILGATGGIGRALARALAGRGWRLLLS 28
>gnl|CDD|233441 TIGR01500, sepiapter_red, sepiapterin reductase. This model
describes sepiapterin reductase, a member of the short
chain dehydrogenase/reductase family. The enzyme
catalyzes the last step in the biosynthesis of
tetrahydrobiopterin. A similar enzyme in Bacillus cereus
was isolated for its ability to convert benzil to
(S)-benzoin, a property sepiapterin reductase also
shares. Cutoff scores for this model are set such that
benzil reductase scores between trusted and noise
cutoffs.
Length = 256
Score = 26.4 bits (58), Expect = 7.2
Identities = 8/21 (38%), Positives = 14/21 (66%)
Query: 103 IILLTGAGNGIGRELAKQFVQ 123
+ L+TGA G GR +A++ +
Sbjct: 2 VCLVTGASRGFGRTIAQELAK 22
>gnl|CDD|168204 PRK05717, PRK05717, oxidoreductase; Validated.
Length = 255
Score = 26.4 bits (58), Expect = 7.3
Identities = 14/50 (28%), Positives = 25/50 (50%)
Query: 101 GEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGY 150
G + L+TGA GIG +A + +V D+D + ++ + L E +
Sbjct: 10 GRVALVTGAARGIGLGIAAWLIAEGWQVVLADLDRERGSKVAKALGENAW 59
>gnl|CDD|221644 pfam12574, 120_Rick_ant, 120 KDa Rickettsia surface antigen. This
domain family is found in bacteria, and is approximately
40 amino acids in length. This family is a Rickettsia
surface antigen of 120 KDa which may be used as an
antigen for immune response against the bacterial
species.
Length = 253
Score = 26.4 bits (58), Expect = 7.4
Identities = 12/21 (57%), Positives = 13/21 (61%), Gaps = 3/21 (14%)
Query: 138 NNETKQMLEE---QGYKNIHT 155
N ETK+ LE GYKNIH
Sbjct: 45 NPETKKKLEGIEIAGYKNIHG 65
>gnl|CDD|224484 COG1568, COG1568, Predicted methyltransferases [General function
prediction only].
Length = 354
Score = 26.3 bits (58), Expect = 7.6
Identities = 18/59 (30%), Positives = 30/59 (50%), Gaps = 2/59 (3%)
Query: 99 LEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYKNIHTYK 157
LEG+ I + G + LA + ++ +V DIDE+ +++ EE GY NI +
Sbjct: 151 LEGKEIFVVGDDDLTSIALALTGMPKRIAVV--DIDERLIKFIEKVAEELGYNNIEAFV 207
>gnl|CDD|133449 cd05191, NAD_bind_amino_acid_DH, NAD(P) binding domain of amino
acid dehydrogenase-like proteins. Amino acid
dehydrogenase(DH)-like NAD(P)-binding domains are
members of the Rossmann fold superfamily and are found
in glutamate, leucine, and phenylalanine DHs (DHs),
methylene tetrahydrofolate DH,
methylene-tetrahydromethanopterin DH,
methylene-tetrahydropholate DH/cyclohydrolase, Shikimate
DH-like proteins, malate oxidoreductases, and glutamyl
tRNA reductase. Amino acid DHs catalyze the deamination
of amino acids to keto acids with NAD(P)+ as a cofactor.
The NAD(P)-binding Rossmann fold superfamily includes a
wide variety of protein families including NAD(P)-
binding domains of alcohol DHs, tyrosine-dependent
oxidoreductases, glyceraldehyde-3-phosphate DH,
lactate/malate DHs, formate/glycerate DHs, siroheme
synthases, 6-phosphogluconate DH, amino acid DHs,
repressor rex, NAD-binding potassium channel domain,
CoA-binding, and ornithine cyclodeaminase-like domains.
These domains have an alpha-beta-alpha configuration.
NAD binding involves numerous hydrogen and van der Waals
contacts.
Length = 86
Score = 25.0 bits (55), Expect = 7.8
Identities = 14/55 (25%), Positives = 26/55 (47%), Gaps = 3/55 (5%)
Query: 81 YSALESILLTLIPPSEKSLEGEIILLTGAGNGIGRELAKQFVQHKV-TLVCWDID 134
A+ + + KSL+G+ +++ GAG +G+ +AK +V D D
Sbjct: 4 AGAVALLKAAGKV-TNKSLKGKTVVVLGAGE-VGKGIAKLLADEGGKKVVLCDRD 56
>gnl|CDD|219559 pfam07760, DUF1616, Protein of unknown function (DUF1616). This is
a family of sequences from hypothetical archaeal
proteins. The region in question is approximately 330
amino acid residues long.
Length = 290
Score = 26.1 bits (58), Expect = 9.0
Identities = 20/95 (21%), Positives = 30/95 (31%), Gaps = 17/95 (17%)
Query: 3 ALSIILSELILLIIKLLYS--ALESILLTLI---------------PPSEKSLEGEIILS 45
LSI + LI L + Y L ILL+L + +
Sbjct: 64 GLSIAVVPLIGLALNYTYWGIRLIPILLSLSLFTLILCLIAYLRRRRLPNDERFIVLFRA 123
Query: 46 PTPSHFTDFSTSWSQSMTALSIILSELILLIIKLL 80
+ S S L ++L IL ++ LL
Sbjct: 124 LDSALKIGLYLPNSYSDNVLLVLLIISILALVGLL 158
>gnl|CDD|181605 PRK08993, PRK08993, 2-deoxy-D-gluconate 3-dehydrogenase; Validated.
Length = 253
Score = 26.0 bits (57), Expect = 9.1
Identities = 15/54 (27%), Positives = 28/54 (51%), Gaps = 2/54 (3%)
Query: 98 SLEGEIILLTGAGNGIGRELAKQFVQHKVTLVCWDIDEKGNNETKQMLEEQGYK 151
SLEG++ ++TG G+G+ +A + +V +I E ET + + G +
Sbjct: 7 SLEGKVAVVTGCDTGLGQGMALGLAEAGCDIVGINIVEP--TETIEQVTALGRR 58
>gnl|CDD|224016 COG1091, RfbD, dTDP-4-dehydrorhamnose reductase [Cell envelope
biogenesis, outer membrane].
Length = 281
Score = 26.1 bits (58), Expect = 9.3
Identities = 8/18 (44%), Positives = 11/18 (61%)
Query: 104 ILLTGAGNGIGRELAKQF 121
IL+TGA +G EL +
Sbjct: 3 ILITGANGQLGTELRRAL 20
>gnl|CDD|187554 cd05243, SDR_a5, atypical (a) SDRs, subgroup 5. This subgroup
contains atypical SDRs, some of which are identified as
putative NAD(P)-dependent epimerases, one as a putative
NAD-dependent epimerase/dehydratase. Atypical SDRs are
distinct from classical SDRs. Members of this subgroup
have a glycine-rich NAD(P)-binding motif that is very
similar to the extended SDRs, GXXGXXG, and binds NADP.
Generally, this subgroup has poor conservation of the
active site tetrad; however, individual sequences do
contain matches to the YXXXK active site motif, the
upstream Ser, and there is a highly conserved Asp in
place of the usual active site Asn throughout the
subgroup. Atypical SDRs generally lack the catalytic
residues characteristic of the SDRs, and their
glycine-rich NAD(P)-binding motif is often different
from the forms normally seen in classical or extended
SDRs. Atypical SDRs include biliverdin IX beta reductase
(BVR-B,aka flavin reductase), NMRa (a negative
transcriptional regulator of various fungi),
progesterone 5-beta-reductase like proteins,
phenylcoumaran benzylic ether and
pinoresinol-lariciresinol reductases, phenylpropene
synthases, eugenol synthase, triphenylmethane reductase,
isoflavone reductases, and others. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold, an NAD(P)(H)-binding region, and a structurally
diverse C-terminal region. Sequence identity between
different SDR enzymes is typically in the 15-30% range;
they catalyze a wide range of activities including the
metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase numbering). In
addition to the Tyr and Lys, there is often an upstream
Ser and/or an Asn, contributing to the active site;
while substrate binding is in the C-terminal region,
which determines specificity. The standard reaction
mechanism is a 4-pro-S hydride transfer and proton relay
involving the conserved Tyr and Lys, a water molecule
stabilized by Asn, and nicotinamide. In addition to the
Rossmann fold core region typical of all SDRs, extended
SDRs have a less conserved C-terminal extension of
approximately 100 amino acids, and typically have a
TGXXGXXG cofactor binding motif. Complex (multidomain)
SDRs such as ketoreductase domains of fatty acid
synthase have a GGXGXXG NAD(P)-binding motif and an
altered active site motif (YXXXN). Fungal type ketoacyl
reductases have a TGXXXGX(1-2)G NAD(P)-binding motif.
Length = 203
Score = 26.0 bits (58), Expect = 9.3
Identities = 5/27 (18%), Positives = 13/27 (48%)
Query: 104 ILLTGAGNGIGRELAKQFVQHKVTLVC 130
+L+ GA +GR + ++ + +
Sbjct: 2 VLVVGATGKVGRHVVRELLDRGYQVRA 28
>gnl|CDD|187553 cd05242, SDR_a8, atypical (a) SDRs, subgroup 8. This subgroup
contains atypical SDRs of unknown function. Proteins in
this subgroup have a glycine-rich NAD(P)-binding motif
consensus that resembles that of the extended SDRs,
(GXXGXXG or GGXGXXG), but lacks the characteristic
active site residues of the SDRs. A Cys often replaces
the usual Lys of the YXXXK active site motif, while the
upstream Ser is generally present and Arg replaces the
usual Asn. Atypical SDRs generally lack the catalytic
residues characteristic of the SDRs, and their
glycine-rich NAD(P)-binding motif is often different
from the forms normally seen in classical or extended
SDRs. Atypical SDRs include biliverdin IX beta reductase
(BVR-B,aka flavin reductase), NMRa (a negative
transcriptional regulator of various fungi),
progesterone 5-beta-reductase like proteins,
phenylcoumaran benzylic ether and
pinoresinol-lariciresinol reductases, phenylpropene
synthases, eugenol synthase, triphenylmethane reductase,
isoflavone reductases, and others. SDRs are a
functionally diverse family of oxidoreductases that have
a single domain with a structurally conserved Rossmann
fold, an NAD(P)(H)-binding region, and a structurally
diverse C-terminal region. Sequence identity between
different SDR enzymes is typically in the 15-30% range;
they catalyze a wide range of activities including the
metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase numbering). In
addition to the Tyr and Lys, there is often an upstream
Ser and/or an Asn, contributing to the active site;
while substrate binding is in the C-terminal region,
which determines specificity. The standard reaction
mechanism is a 4-pro-S hydride transfer and proton relay
involving the conserved Tyr and Lys, a water molecule
stabilized by Asn, and nicotinamide. In addition to the
Rossmann fold core region typical of all SDRs, extended
SDRs have a less conserved C-terminal extension of
approximately 100 amino acids, and typically have a
TGXXGXXG cofactor binding motif. Complex (multidomain)
SDRs such as ketoreductase domains of fatty acid
synthase have a GGXGXXG NAD(P)-binding motif and an
altered active site motif (YXXXN). Fungal type ketoacyl
reductases have a TGXXXGX(1-2)G NAD(P)-binding motif.
Length = 296
Score = 26.0 bits (58), Expect = 9.8
Identities = 9/28 (32%), Positives = 16/28 (57%), Gaps = 2/28 (7%)
Query: 104 ILLTGAGNGIGRELAKQFVQ--HKVTLV 129
I++TG IGR L ++ H+V ++
Sbjct: 2 IVITGGTGFIGRALTRRLTAAGHEVVVL 29
>gnl|CDD|176220 cd08259, Zn_ADH5, Alcohol dehydrogenases of the MDR family.
NAD(P)(H)-dependent oxidoreductases are the major
enzymes in the interconversion of alcohols and
aldehydes, or ketones. This group contains proteins that
share the characteristic catalytic and structural
zinc-binding sites of the zinc-dependent alcohol
dehydrogenase family. Alcohol dehydrogenase in the
liver converts ethanol and NAD+ to acetaldehyde and
NADH, while in yeast and some other microorganisms ADH
catalyzes the conversion acetaldehyde to ethanol in
alcoholic fermentation. ADH is a member of the medium
chain alcohol dehydrogenase family (MDR), which have a
NAD(P)(H)-binding domain in a Rossmann fold of a
beta-alpha form. The NAD(H)-binding region is comprised
of 2 structurally similar halves, each of which contacts
a mononucleotide. A GxGxxG motif after the first
mononucleotide contact half allows the close contact of
the coenzyme with the ADH backbone. The N-terminal
catalytic domain has a distant homology to GroES. These
proteins typically form dimers (typically higher plants,
mammals) or tetramers (yeast, bacteria), and have 2
tightly bound zinc atoms per subunit, a catalytic zinc
at the active site and a structural zinc in a lobe of
the catalytic domain. NAD(H)-binding occurs in the cleft
between the catalytic and coenzyme-binding domains at
the active site, and coenzyme binding induces a
conformational closing of this cleft. Coenzyme binding
typically precedes and contributes to substrate binding.
In human ADH catalysis, the zinc ion helps coordinate
the alcohol, followed by deprotonation of a histidine
(His-51), the ribose of NAD, a serine (Ser-48), then the
alcohol, which allows the transfer of a hydride to NAD+,
creating NADH and a zinc-bound aldehyde or ketone. In
yeast and some bacteria, the active site zinc binds an
aldehyde, polarizing it, and leading to the reverse
reaction.
Length = 332
Score = 26.1 bits (58), Expect = 9.9
Identities = 8/15 (53%), Positives = 13/15 (86%)
Query: 100 EGEIILLTGAGNGIG 114
+G+ +L+TGAG G+G
Sbjct: 162 KGDTVLVTGAGGGVG 176
Database: CDD.v3.10
Posted date: Mar 20, 2013 7:55 AM
Number of letters in database: 10,937,602
Number of sequences in database: 44,354
Lambda K H
0.317 0.135 0.368
Gapped
Lambda K H
0.267 0.0845 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 7,951,906
Number of extensions: 745610
Number of successful extensions: 1323
Number of sequences better than 10.0: 1
Number of HSP's gapped: 1314
Number of HSP's successfully gapped: 265
Length of query: 159
Length of database: 10,937,602
Length adjustment: 89
Effective length of query: 70
Effective length of database: 6,990,096
Effective search space: 489306720
Effective search space used: 489306720
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.3 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 41 (21.6 bits)
S2: 55 (24.8 bits)