RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy16812
(359 letters)
>gnl|CDD|239582 cd03505, Delta9-FADS-like, The Delta9 Fatty Acid Desaturase
(Delta9-FADS)-like CD includes the delta-9 and delta-11
acyl CoA desaturases found in various eukaryotes
including vertebrates, insects, higher plants, and
fungi. The delta-9 acyl-lipid desaturases are found in a
wide range of bacteria. These enzymes play essential
roles in fatty acid metabolism and the regulation of
cell membrane fluidity. Acyl-CoA desaturases are the
enzymes involved in the CoA-bound desaturation of fatty
acids. Mammalian stearoyl-CoA delta-9 desaturase is a
key enzyme in the biosynthesis of monounsaturated fatty
acids, and in yeast, the delta-9 acyl-CoA desaturase
(OLE1) reaction accounts for all de nova unsaturated
fatty acid production in Saccharomyces cerevisiae. These
non-heme, iron-containing, ER membrane-bound enzymes are
part of a three-component enzyme system involving
cytochrome b5, cytochrome b5 reductase, and the delta-9
fatty acid desaturase. This complex catalyzes the NADH-
and oxygen-dependent insertion of a cis double bond
between carbons 9 and 10 of the saturated fatty acyl
substrates, palmitoyl (16:0)-CoA or stearoyl (18:0)-CoA,
yielding the monoenoic products palmitoleic (16:l) or
oleic (18:l) acids, respectively. In cyanobacteria, the
biosynthesis of unsaturated fatty acids is initiated by
delta 9 acyl-lipid desaturase (DesC) which introduces
the first double bond at the delta-9 position of a
saturated fatty acid that has been esterified to a
glycerolipid. This domain family has extensive
hydrophobic regions that would be capable of spanning
the membrane bilayer at least twice. Comparison of
sequences also reveals the existence of three regions of
conserved histidine cluster motifs that contain the
residues: HXXXXH, HXXHH, and H/QXXHH. These histidine
residues are reported to be catalytically essential and
proposed to be the ligands for the iron atoms contained
within the rat stearoyl CoA delta-9 desaturase. Some
eukaryotic (Fungi, Euglenozoa, Mycetozoa, Rhodophyta)
desaturase domains have an adjacent C-terminal
cytochrome b5-like domain.
Length = 178
Score = 170 bits (434), Expect = 3e-52
Identities = 68/179 (37%), Positives = 100/179 (55%), Gaps = 14/179 (7%)
Query: 5 AFGLGFFSSIGVTAGAHRLWSHHSYKAKWPMRLLLAIFQTIGIQYSILNWVRDHRLHHKY 64
+ +G+TAG HRLW+H S+KA P+R+ LAI ++ Q S L WV DHRLHH+Y
Sbjct: 8 LVLYYLLTGLGITAGYHRLWAHRSFKAPKPLRIFLAILGSLAGQGSPLWWVADHRLHHRY 67
Query: 65 TDTDADPHNSTRGFFFSHIGW------SLILPHPEVTEKVKVIDTSDVEKDWVVVWQYKN 118
+DTD DPH+ RGF+FSH+GW +++ H T V + + +
Sbjct: 68 SDTDGDPHSPKRGFWFSHVGWLGGLLRIVLVLH--ATWLVNSLAHMWGYRPYD-----TR 120
Query: 119 INPTENLFVSVASFGDGWHNYHHVFPWDYKNAELWNYKFNISTAFVDLCALIGWAYDLK 177
N +V++ +FG+GWHN HH FP D +N W Y+ + + + L +G A+DLK
Sbjct: 121 DTSRNNWWVALLTFGEGWHNNHHAFPGDARNGLKW-YQIDPTKWVIRLLEKLGLAWDLK 178
Score = 111 bits (281), Expect = 1e-29
Identities = 41/99 (41%), Positives = 60/99 (60%), Gaps = 3/99 (3%)
Query: 236 LWVAHC--VATQLRHVITLHGTFLINSVAHMWGNKPYDKNINPTENLFVSVASFGDGWHN 293
W +H + LR V+ LH T+L+NS+AHMWG +PYD N +V++ +FG+GWHN
Sbjct: 81 FWFSHVGWLGGLLRIVLVLHATWLVNSLAHMWGYRPYDTRDTSRNNWWVALLTFGEGWHN 140
Query: 294 YHHVFPWDYKNAELWNYKFNISTAFVDLCALIGWAYDLK 332
HH FP D +N W Y+ + + + L +G A+DLK
Sbjct: 141 NHHAFPGDARNGLKW-YQIDPTKWVIRLLEKLGLAWDLK 178
>gnl|CDD|224316 COG1398, OLE1, Fatty-acid desaturase [Lipid metabolism].
Length = 289
Score = 123 bits (311), Expect = 6e-33
Identities = 63/232 (27%), Positives = 96/232 (41%), Gaps = 57/232 (24%)
Query: 11 FSSIGVTAGAHRLWSHHSYKAKWPMRLLLAIFQTIGIQYSILNWVRDHRLHHKYTDTDAD 70
IG+T G HRLWSH ++KA + +LA + + Q + WV HR HH+ TDTD D
Sbjct: 57 IGGIGITLGLHRLWSHRAFKAHKWLEYVLAFWGALTTQGPAIEWVGIHRKHHRKTDTDQD 116
Query: 71 PH-NSTRGFFFSHIGWSLILPHPEVTEKVKVIDTSDVEKDW------------------- 110
PH +S +GF++SHIGW L+ + D+ DW
Sbjct: 117 PHYDSFKGFWWSHIGWMLLYSAEAKDRETIQKLGKDIPLDWQHRNLYLIALLMQIVLPLF 176
Query: 111 -------------------VVVWQ-----------------YKNINPTENLFVSVASFGD 134
V+V +V++ +FG+
Sbjct: 177 IGYALGGWLGLIWGGVQRLVLVQHATWCVNSLGHYIGYRPFDCRDTARNCWWVALVTFGE 236
Query: 135 GWHNYHHVFPWDYKNAELWNYKFNISTAFVDLCALIGWAYDLKTVPTDMIQK 186
GWHN HH FP +N W ++F+++ + L +L+G A +K P I +
Sbjct: 237 GWHNNHHAFPNSARNGLKW-WEFDVTWWIIKLLSLLGLAKVVKLAPKARIGE 287
Score = 86.7 bits (215), Expect = 2e-19
Identities = 37/132 (28%), Positives = 66/132 (50%), Gaps = 4/132 (3%)
Query: 210 RLYAPFAVFLCYILPTWVPWYFWGEDLWVAHCVATQLRHVITLHGTFLINSVAHMWGNKP 269
R A+ + +LP ++ + G W+ R V+ H T+ +NS+ H G +P
Sbjct: 160 RNLYLIALLMQIVLPLFIGYALGG---WLGLIWGGVQRLVLVQHATWCVNSLGHYIGYRP 216
Query: 270 YDKNINPTENLFVSVASFGDGWHNYHHVFPWDYKNAELWNYKFNISTAFVDLCALIGWAY 329
+D +V++ +FG+GWHN HH FP +N W ++F+++ + L +L+G A
Sbjct: 217 FDCRDTARNCWWVALVTFGEGWHNNHHAFPNSARNGLKW-WEFDVTWWIIKLLSLLGLAK 275
Query: 330 DLKTVPTDMIQK 341
+K P I +
Sbjct: 276 VVKLAPKARIGE 287
>gnl|CDD|238511 cd01060, Membrane-FADS-like, The membrane fatty acid desaturase
(Membrane_FADS)-like CD includes membrane FADSs, alkane
hydroxylases, beta carotene ketolases (CrtW-like),
hydroxylases (CrtR-like), and other related proteins.
They are present in all groups of organisms with the
exception of archaea. Membrane FADSs are non-heme,
iron-containing, oxygen-dependent enzymes involved in
regioselective introduction of double bonds in fatty
acyl aliphatic chains. They play an important role in
the maintenance of the proper structure and functioning
of biological membranes. Alkane hydroxylases are
bacterial, integral-membrane di-iron enzymes that share
a requirement for iron and oxygen for activity similar
to that of membrane FADSs, and are involved in the
initial oxidation of inactivated alkanes. Beta-carotene
ketolase and beta-carotene hydroxylase are carotenoid
biosynthetic enzymes for astaxanthin and zeaxanthin,
respectively. This superfamily domain has extensive
hydrophobic regions that would be capable of spanning
the membrane bilayer at least twice. Comparison of these
sequences also reveals three regions of conserved
histidine cluster motifs that contain eight histidine
residues: HXXX(X)H, HXX(X)HH, and HXXHH (an additional
conserved histidine residue is seen between clusters 2
and 3). Spectroscopic and genetic evidence point to a
nitrogen-rich coordination environment located in the
cytoplasm with as many as eight histidines coordinating
the two iron ions and a carboxylate residue bridging the
two metals in the Pseudomonas oleovorans alkane
hydroxylase (AlkB). In addition, the eight histidine
residues are reported to be catalytically essential and
proposed to be the ligands for the iron atoms contained
within the rat stearoyl CoA delta-9 desaturase.
Length = 122
Score = 67.1 bits (164), Expect = 9e-14
Identities = 41/142 (28%), Positives = 57/142 (40%), Gaps = 25/142 (17%)
Query: 5 AFGLGFFSSIGVTAGAHRLWSHHSY-KAKWPMRLLLAIFQTIGIQYSILNWVRDHRLHHK 63
A LG +G+T AH L H S+ +++W RLL A+ + S W R HR HH+
Sbjct: 4 ALLLGLLGGLGLTVLAHEL-GHRSFFRSRWLNRLLGALLGLA-LGGSYGWWRRSHRRHHR 61
Query: 64 YTDTD-ADPHNSTRGFFFSHIGWSLILPHPEVTEKVKVIDTSDVEKDWVVVWQYKNINPT 122
YT+T DP + + H G D D W N
Sbjct: 62 YTNTPGKDPD--SAVNYLEHYG-------------------GDRPFDTDGEWLRTTDNSR 100
Query: 123 ENLFVSVASFGDGWHNYHHVFP 144
+ + G G+HN HH+FP
Sbjct: 101 NGWLNLLLTGGLGYHNEHHLFP 122
Score = 37.1 bits (86), Expect = 0.002
Identities = 14/51 (27%), Positives = 24/51 (47%), Gaps = 7/51 (13%)
Query: 256 FLINSVAHMWGNKPYDKN-------INPTENLFVSVASFGDGWHNYHHVFP 299
+N + H G++P+D + N + + G G+HN HH+FP
Sbjct: 72 SAVNYLEHYGGDRPFDTDGEWLRTTDNSRNGWLNLLLTGGLGYHNEHHLFP 122
>gnl|CDD|177866 PLN02220, PLN02220, delta-9 acyl-lipid desaturase.
Length = 299
Score = 64.4 bits (157), Expect = 1e-11
Identities = 29/82 (35%), Positives = 44/82 (53%), Gaps = 2/82 (2%)
Query: 5 AFGLGFFSSIGVTAGAHRLWSHHSYK-AKWPMRLLLAIFQTIGIQYSILNWVRDHRLHHK 63
L + + +T HR +H S+K KW + A +Q ++WV HR HH+
Sbjct: 61 GLILYIVTGLSITFSYHRNLAHRSFKLPKW-LEYPFAYSALFALQGDPIDWVSTHRFHHQ 119
Query: 64 YTDTDADPHNSTRGFFFSHIGW 85
+TD+D DPH+ GF+FSH+ W
Sbjct: 120 FTDSDRDPHSPIEGFWFSHVLW 141
Score = 56.3 bits (136), Expect = 6e-09
Identities = 34/124 (27%), Positives = 62/124 (50%), Gaps = 4/124 (3%)
Query: 221 YILPTWVPWYFWGEDLWVAHCVATQLRHVITLHGTFLINSVAHMWGNKPYDKNINPTENL 280
+IL W Y WG ++ V I H T+LINS H+WG++ +
Sbjct: 177 HILMFWTLLYLWGGLPYLTWGVGVGG--AIGYHVTWLINSACHIWGSRTWKTKDTSRNVW 234
Query: 281 FVSVASFGDGWHNYHHVFPWDYKNAELWNYKFNISTAFVDLCALIGWAYDLKTVPTDMIQ 340
++S+ + G+ WHN HH F + W ++ +I+ + ++G A D+K +PT+ +
Sbjct: 235 WLSLFTMGESWHNNHHAFESSARQGLEW-WQIDITWYLIRFFEVLGLATDVK-LPTEAQK 292
Query: 341 KRVA 344
+++A
Sbjct: 293 RKMA 296
Score = 35.5 bits (82), Expect = 0.031
Identities = 17/64 (26%), Positives = 37/64 (57%), Gaps = 2/64 (3%)
Query: 126 FVSVASFGDGWHNYHHVFPWDYKNAELWNYKFNISTAFVDLCALIGWAYDLKTVPTDMIQ 185
++S+ + G+ WHN HH F + W ++ +I+ + ++G A D+K +PT+ +
Sbjct: 235 WLSLFTMGESWHNNHHAFESSARQGLEW-WQIDITWYLIRFFEVLGLATDVK-LPTEAQK 292
Query: 186 KRVA 189
+++A
Sbjct: 293 RKMA 296
>gnl|CDD|215943 pfam00487, FA_desaturase, Fatty acid desaturase.
Length = 251
Score = 33.4 bits (76), Expect = 0.14
Identities = 15/77 (19%), Positives = 28/77 (36%), Gaps = 1/77 (1%)
Query: 13 SIGVTAGAHRLWSHHSYKAKWPMRLLLAIFQTIGIQYSILNWVRDHRLHHKYTDT-DADP 71
+G+ G +H + + LL + + S W H HH +T+ DP
Sbjct: 16 LLGILGGLAHEAAHGALFRSRRLNDLLGRLLALLLGISYSAWRISHLRHHHHTNNPGKDP 75
Query: 72 HNSTRGFFFSHIGWSLI 88
++ R + L+
Sbjct: 76 DSARRRLLRYALRRRLL 92
Score = 28.0 bits (62), Expect = 7.2
Identities = 16/94 (17%), Positives = 28/94 (29%)
Query: 206 FLRFRLYAPFAVFLCYILPTWVPWYFWGEDLWVAHCVATQLRHVITLHGTFLINSVAHMW 265
+R L + L +L W L T L V L L
Sbjct: 129 RIRLLLLLALLLALALLLAGLGGWGALLLFLLPLLLALTLLLLVNYLEHYGLDTEPERAA 188
Query: 266 GNKPYDKNINPTENLFVSVASFGDGWHNYHHVFP 299
+ + + + ++ + +H HH+FP
Sbjct: 189 RTWYERQLVTTSNSWVLNWLTGNLNYHIEHHLFP 222
>gnl|CDD|239590 cd03513, CrtW_beta-carotene-ketolase, Beta-carotene
ketolase/oxygenase (CrtW, also known as CrtO), the
carotenoid astaxanthin biosynthetic enzyme, initially
catalyzes the addition of two keto groups to carbons C4
and C4' of beta-carotene. Carotenoids are important
natural pigments produced by many microorganisms and
plants. Astaxanthin is reported to be an antioxidant, an
anti-cancer agent, and an immune system stimulant. A
number of bacteria and green algae can convert
beta-carotene into astaxanthin by using several
ketocarotenoids as intermediates and CrtW and a
beta-carotene hydroxylase (CrtZ). CrtW initially
converts beta-carotene to canthaxanthin via echinenone,
and CrtZ initially mediates the conversion of
beta-carotene to zeaxanthin via beta-cryptoxanthin.
After a few more intermediates are formed, CrtW and CrtZ
act in combination to produce astaxanthin. Sequences of
this domain family appear to be structurally related to
membrane fatty acid desaturases and alkane hydroxylases.
They all share in common extensive hydrophobic regions
that are capable of spanning the membrane bilayer at
least twice. Comparison of these sequences also reveals
three regions of conserved histidine cluster motifs that
contain eight histidine residues: HXXXH, HXXHH, and
HXXHH. These histidine residues are reported to be
catalytically essential and proposed to be the ligands
for the iron atoms contained within homologs, stearoyl
CoA desaturase and alkane hydroxylase.
Length = 225
Score = 28.8 bits (65), Expect = 3.7
Identities = 17/61 (27%), Positives = 23/61 (37%), Gaps = 12/61 (19%)
Query: 39 LAIFQTIGIQYSILNWVRDHRLHHKYTDTDADP--HNSTR--------GFFFSHIGWSLI 88
L +F G Y L R H LHH++ T DP H F ++ GW +
Sbjct: 72 LCLFLYAGFSYDRLL--RKHHLHHRHPGTAKDPDFHKGNPSGFLPWYLHFMSNYFGWRQL 129
Query: 89 L 89
Sbjct: 130 A 130
>gnl|CDD|151786 pfam11345, DUF3147, Protein of unknown function (DUF3147). Some
members in this family of proteins are annotated as
membrane proteins however this cannot be confirmed.
Currently no function is known.
Length = 109
Score = 27.3 bits (61), Expect = 5.1
Identities = 9/24 (37%), Positives = 13/24 (54%), Gaps = 1/24 (4%)
Query: 206 FLRFRLYAPFAVFLCYILPTWVPW 229
LRF ++ AV L YI+ +P
Sbjct: 2 LLRF-VFGGLAVALSYIIAVKLPG 24
>gnl|CDD|178541 PLN02955, PLN02955, 8-amino-7-oxononanoate synthase.
Length = 476
Score = 28.1 bits (62), Expect = 8.7
Identities = 9/35 (25%), Positives = 16/35 (45%), Gaps = 1/35 (2%)
Query: 118 NINPTENLFVSVASFGDGWHNYHHVFPWDYKNAEL 152
N E + S A+ GD + + + WD + E+
Sbjct: 33 RQNEEE-IVKSRANGGDDYEVFDGLCQWDRTSVEV 66
Score = 28.1 bits (62), Expect = 8.7
Identities = 9/35 (25%), Positives = 16/35 (45%), Gaps = 1/35 (2%)
Query: 273 NINPTENLFVSVASFGDGWHNYHHVFPWDYKNAEL 307
N E + S A+ GD + + + WD + E+
Sbjct: 33 RQNEEE-IVKSRANGGDDYEVFDGLCQWDRTSVEV 66
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
0.325 0.138 0.482
Gapped
Lambda K H
0.267 0.0774 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 18,782,757
Number of extensions: 1797693
Number of successful extensions: 2095
Number of sequences better than 10.0: 1
Number of HSP's gapped: 2082
Number of HSP's successfully gapped: 38
Length of query: 359
Length of database: 10,937,602
Length adjustment: 98
Effective length of query: 261
Effective length of database: 6,590,910
Effective search space: 1720227510
Effective search space used: 1720227510
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 15 ( 7.0 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 40 (21.6 bits)
S2: 60 (26.8 bits)