Psyllid ID: psy9433

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Local Sequence Feature Prediction

Residue Number Marker
--------10--------20--------30--------40--------50--------60--------70--------80--------90-------100-----
Protein Sequence
ITSVLSITHRGTGVALTAYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL
Secondary Structure (PSIPRED)
cHHHHHHHHHHHHHHHHHHHHHHHHHHHHHcHHHHHHHHHHccHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHcccccHHHHHHHHHHHHHHHHHHHHHHHHc
Secondary Structure Prediction (SSPRO)
ccHHHHHHHHHHHHHHHHHHHHHHHHHccccHHHHHHHHHHccccHHHHHHHHHHHHHHHHHHHHHHHHHHHEHcccccccHHHHHHHHHHHHHHHHHHHHHHHc
Coil and Loop (DISEMBL)
ITSVLSITHRGTGVALTAYALGLAgvglttdiNSVVSFVDalnlsapiLLAGKFILAFPVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL
Flexible Loop (DISEMBL)
itsvlsithrgtgVALTAYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL
Low Complexity Region (SEG)
ITSVLSITHRGTGVALTAYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL
Disordered region (IsUnstruct)
****LSITHRGTGVALTAYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTL*
Disordered Region (DISOPRED)
ITSVLSITHRGTGVALTAYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL
Disordered Region (DISEMBL)
ITSVLSITHRGTGVALTAYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL
Disordered Region (DISPRO)
ITSVLSITHRGTGVALTAYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL
Transmembrane Helix (TMHMM)
iiiiiiHHHHHHHHHHHHHHHHHHHHHHHooooooooooooooHHHHHHHHHHHHHHHHHHHHiiiiiiiiiiiiiiiiiiiiHHHHHHHHHHHHHHHHHHHHoo
Transmembrane Helix (HMMTOP)
iiiiiiiiiiHHHHHHHHHHHHHHHHHHooooooooooooHHHHHHHHHHHHHHHHHHHHiiiiiiiiiiiiiiiiiiiiiiiiHHHHHHHHHHHHHHHHHHHHo
Transmembrane Helix (MEMSAT)
iiiiiHHHHHHHHHHHHHHHHHHHHHHHHHooooooooooooHHHHHHHHHHHHHHHHHHHHHHHHiiiiiiiiiiiiiiiiiHHHHHHHHHHHHHHHHHHHHoo
TM Helix, Signal Peptide (MEMSAT_SVM)
iiiiiiiiiiHHHHHHHHHHHHHHHHHooooooooooooooooooHHHHHHHHHHHHHHHHHHHHHHHHHHHiiiiiiiiiiiiiHHHHHHHHHHHHHHHHHooo
TM Helix, Signal Peptide (Phobius)
iiiiiiiiiiiHHHHHHHHHHHHHHHHHHHHHoooooooooooHHHHHHHHHHHHHHHHHHHHiiiiiiiiiiiiiiiiiiiiHHHHHHHHHHHHHHHHHHHHHo
Signal Peptide (SignalP HMM Mode)
SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
Signal Peptide (SignalP NN Mode)
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Coiled Coils (COILS)
ITSVLSITHRGTGVALTAYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL
Positional Conservation
no confident homologs detected

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Close Homologs for Annotation Transfer

Close Homologs in SWISS-PROT Database Detected by BLAST

Original result of BLAST against SWISS-PROT Database

ID	Length	Definition	RBH(Q2H)	RBH(H2Q)	Q cover	H cover	Identity	E-value
Query	105	2.2.26 [Sep-21-2011]
P70097	169	Succinate dehydrogenase c	yes	N/A	0.914	0.568	0.448	5e-18
P35720	169	Succinate dehydrogenase c	yes	N/A	0.914	0.568	0.418	2e-15
Q99643	169	Succinate dehydrogenase c	no	N/A	0.8	0.497	0.430	1e-14
Q9CZB0	169	Succinate dehydrogenase c	yes	N/A	0.8	0.497	0.418	2e-14
D0VWV4	169	Succinate dehydrogenase c	no	N/A	0.904	0.562	0.412	6e-14
O74882	180	Succinate dehydrogenase c	yes	N/A	0.895	0.522	0.403	5e-12
P80481	144	Succinate dehydrogenase c	N/A	N/A	0.961	0.701	0.396	3e-10
Q8T2T5	192	Succinate dehydrogenase c	yes	N/A	0.990	0.541	0.327	5e-10
Q4UKC1	124	Succinate dehydrogenase c	yes	N/A	0.923	0.782	0.359	2e-07
P41085	124	Succinate dehydrogenase c	yes	N/A	0.923	0.782	0.330	3e-07

>sp|P70097|C560_CRIGR Succinate dehydrogenase cytochrome b560 subunit, mitochondrial OS=Cricetulus griseus GN=SDHC PE=2 SV=1

 Score = 89.7 bits (221), Expect = 5e-18,   Method: Compositional matrix adjust.
 Identities = 44/98 (44%), Positives = 66/98 (67%), Gaps = 2/98 (2%)

Query: 4   VLSITHRGTGVALTA--YALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVS 61
           V+SI HRGTGVAL+      GL+ + L  +  S + F+ +L L   ++ + KF+L FP+ 
Sbjct: 66  VMSICHRGTGVALSGGVSLFGLSALLLPGNFESYLMFIKSLCLGPALIHSAKFVLVFPLM 125

Query: 62  YHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTN 99
           YH+ NGIRHLIWD G+ L+I +VY +G A+L  A+L++
Sbjct: 126 YHSLNGIRHLIWDLGKGLSISQVYQSGVAVLMLAVLSS 163

Membrane-anchoring subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial electron transport chain and is responsible for transferring electrons from succinate to ubiquinone (coenzyme Q).
Cricetulus griseus (taxid: 10029)

>sp|P35720|C560_BOVIN Succinate dehydrogenase cytochrome b560 subunit, mitochondrial OS=Bos taurus GN=SDHC PE=1 SV=2

 Score = 81.3 bits (199), Expect = 2e-15,   Method: Compositional matrix adjust.
 Identities = 41/98 (41%), Positives = 63/98 (64%), Gaps = 2/98 (2%)

Query: 5   LSITHRGTGVALTA--YALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSY 62
           +SI HRGTG+AL+A     GL+ + +     S + FV +L L   ++   KF L FP+ Y
Sbjct: 67  MSICHRGTGIALSAGVSLFGLSALLVPGSFESHLEFVKSLCLGPALIHTAKFALVFPLMY 126

Query: 63  HTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNL 100
           HT NGIRHL+WD G+ LTI +++ +G A+L   +L+++
Sbjct: 127 HTWNGIRHLMWDLGKGLTISQLHQSGVAVLVLTVLSSV 164

Membrane-anchoring subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial electron transport chain and is responsible for transferring electrons from succinate to ubiquinone (coenzyme Q).

Bos taurus (taxid: 9913)

>sp|Q99643|C560_HUMAN Succinate dehydrogenase cytochrome b560 subunit, mitochondrial OS=Homo sapiens GN=SDHC PE=1 SV=1

 Score = 78.2 bits (191), Expect = 1e-14,   Method: Compositional matrix adjust.
 Identities = 37/86 (43%), Positives = 54/86 (62%), Gaps = 2/86 (2%)

Query: 5   LSITHRGTGVALTA--YALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSY 62
           +SI HRGTG+AL+A     G++ + L  +  S +  V +L L   ++   KF L FP+ Y
Sbjct: 67  MSICHRGTGIALSAGVSLFGMSALLLPGNFESYLELVKSLCLGPALIHTAKFALVFPLMY 126

Query: 63  HTANGIRHLIWDTGRALTIKKVYTTG 88
           HT NGIRHL+WD G+ L I ++Y +G
Sbjct: 127 HTWNGIRHLMWDLGKGLKIPQLYQSG 152

Membrane-anchoring subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial electron transport chain and is responsible for transferring electrons from succinate to ubiquinone (coenzyme Q).

Homo sapiens (taxid: 9606)

>sp|Q9CZB0|C560_MOUSE Succinate dehydrogenase cytochrome b560 subunit, mitochondrial OS=Mus musculus GN=Sdhc PE=2 SV=1

 Score = 78.2 bits (191), Expect = 2e-14,   Method: Compositional matrix adjust.
 Identities = 36/86 (41%), Positives = 56/86 (65%), Gaps = 2/86 (2%)

Query: 5   LSITHRGTGVALTA--YALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSY 62
           LS+ HRG+G+AL+      GL+ + L  +  S + FV +L L   ++ + KF+L FP+ Y
Sbjct: 67  LSVCHRGSGIALSGGVSLFGLSALLLPGNFESYLMFVKSLCLGPTLIYSAKFVLVFPLMY 126

Query: 63  HTANGIRHLIWDTGRALTIKKVYTTG 88
           H+ NGIRHL+WD G+ L I +V+ +G
Sbjct: 127 HSLNGIRHLLWDLGKGLAIPQVWLSG 152

Membrane-anchoring subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial electron transport chain and is responsible for transferring electrons from succinate to ubiquinone (coenzyme Q).

Mus musculus (taxid: 10090)

>sp|D0VWV4|C560_PIG Succinate dehydrogenase cytochrome b560 subunit, mitochondrial OS=Sus scrofa GN=SDHC PE=1 SV=2

 Score = 75.9 bits (185), Expect = 6e-14,   Method: Compositional matrix adjust.
 Identities = 40/97 (41%), Positives = 60/97 (61%), Gaps = 2/97 (2%)

Query: 5   LSITHRGTGVALTA--YALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSY 62
           +SI HRGTG+AL+A     GL+ + L  +  S +  V +L L   ++   KF + FP+ Y
Sbjct: 67  MSICHRGTGIALSAGVSLFGLSALLLPGNFESHLELVKSLCLGPTLIYTAKFGIVFPLMY 126

Query: 63  HTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTN 99
           HT NGIRHLIWD G+ LTI ++  +G  +L   +L++
Sbjct: 127 HTWNGIRHLIWDLGKGLTIPQLTQSGVVVLILTVLSS 163

Membrane-anchoring subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial electron transport chain and is responsible for transferring electrons from succinate to ubiquinone (coenzyme Q).

Sus scrofa (taxid: 9823)

>sp|O74882|SDH3_SCHPO Succinate dehydrogenase cytochrome B subunit, mitochondrial OS=Schizosaccharomyces pombe (strain 972 / ATCC 24843) GN=sdh3 PE=3 SV=1

 Score = 69.7 bits (169), Expect = 5e-12,   Method: Compositional matrix adjust.
 Identities = 44/109 (40%), Positives = 65/109 (59%), Gaps = 15/109 (13%)

Query: 1   ITSVLSITHRGTGV----ALTAYALG-----LAGVGL-TTDINSVVSFVDALNLSAPILL 50
           +T  LS  HR TG      L A+A+G     LAG  L T  I+ ++  V        I +
Sbjct: 71  LTWYLSSLHRITGCVVAGTLYAFAMGYLVAPLAGYSLDTATISGLIQQVPTW-----IKV 125

Query: 51  AGKFILAFPVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTN 99
             KF++++P+++H  NGIRHLIWDT + L++K VY TGYA+L  ++LT+
Sbjct: 126 PAKFVISYPLTFHIFNGIRHLIWDTTKELSLKGVYRTGYAVLALSVLTS 174

Membrane-anchoring subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial electron transport chain and is responsible for transferring electrons from succinate to ubiquinone (coenzyme Q).

Schizosaccharomyces pombe (strain 972 / ATCC 24843) (taxid: 284812)

>sp|P80481|C560_RECAM Succinate dehydrogenase cytochrome b560 subunit OS=Reclinomonas americana GN=SDH3 PE=3 SV=1

 Score = 63.5 bits (153), Expect = 3e-10,   Method: Compositional matrix adjust.
 Identities = 42/106 (39%), Positives = 54/106 (50%), Gaps = 5/106 (4%)

Query: 1   ITSVLSITHRGTG----VALTAYALGLAGVGLTTDINSVVSFVDALN-LSAPILLAGKFI 55
           IT+ LSI HR TG    + L  + L L  +       +  S    LN  S  + +A  F 
Sbjct: 34  ITNTLSIFHRITGGVLALTLCFFILILKMLNFHLSSYAFYSIAYTLNQYSGFLFIAISFF 93

Query: 56  LAFPVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLV 101
           L   + YH   G+RHL+WD G AL I+ VY TGY MLG A L  L+
Sbjct: 94  LLLFIFYHLFAGLRHLVWDAGYALEIENVYLTGYIMLGLAFLFTLI 139

Membrane-anchoring subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial electron transport chain and is responsible for transferring electrons from succinate to ubiquinone (coenzyme Q).

Reclinomonas americana (taxid: 48483)

>sp|Q8T2T5|C560_DICDI Succinate dehydrogenase cytochrome b560 subunit, mitochondrial OS=Dictyostelium discoideum GN=sdhC PE=3 SV=1

 Score = 62.8 bits (151), Expect = 5e-10,   Method: Compositional matrix adjust.
 Identities = 35/107 (32%), Positives = 61/107 (57%), Gaps = 3/107 (2%)

Query: 1   ITSVLSITHRGTGVALTAYALGLAGVGLTTDINSVVSFVDALNLSAPILL-AGKFILAFP 59
           + +V+SI HR TG+ L     GLAGV L    +  + ++  L+   P L+   KF +A P
Sbjct: 84  LPAVMSIMHRATGICLALGITGLAGVTLFAP-HDAIHYIQLLHTQYPALVYPAKFAVALP 142

Query: 60  VSYHTANGIRHLIWD-TGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
           ++YH   G+RH+IWD T + L+I ++ ++G  +L    + + + T +
Sbjct: 143 LTYHFCTGVRHIIWDETVKGLSISQIESSGKVLLAVVAVLSTIFTFV 189

Membrane-anchoring subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial electron transport chain and is responsible for transferring electrons from succinate to ubiquinone (coenzyme Q).

Dictyostelium discoideum (taxid: 44689)

>sp|Q4UKC1|DHSC_RICFE Succinate dehydrogenase cytochrome b556 subunit OS=Rickettsia felis (strain ATCC VR-1525 / URRWXCal2) GN=sdhC PE=3 SV=1

 Score = 54.7 bits (130), Expect = 2e-07,   Method: Compositional matrix adjust.
 Identities = 37/103 (35%), Positives = 56/103 (54%), Gaps = 6/103 (5%)

Query: 1   ITSVLSITHRGTGVALT-AYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFP 59
           I+S LSI HR TGVAL  A ++    + L+   N+ + F +   +   I L     +++ 
Sbjct: 25  ISSTLSILHRMTGVALFFAVSILAWWLILSKYDNNYLQFANCCIIK--ICLVA---VSYA 79

Query: 60  VSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVL 102
             YH  NGIRHL WD G   +IK V  TG+ ++  +IL  ++L
Sbjct: 80  WFYHLCNGIRHLFWDIGYGFSIKAVNITGWCVVVCSILLTMLL 122

Membrane-anchoring subunit of succinate dehydrogenase (SDH).

Rickettsia felis (strain ATCC VR-1525 / URRWXCal2) (taxid: 315456)

>sp|P41085|DHSC_RICPR Succinate dehydrogenase cytochrome b556 subunit OS=Rickettsia prowazekii (strain Madrid E) GN=sdhC PE=3 SV=1

 Score = 53.9 bits (128), Expect = 3e-07,   Method: Compositional matrix adjust.
 Identities = 34/103 (33%), Positives = 54/103 (52%), Gaps = 6/103 (5%)

Query: 1   ITSVLSITHRGTGVALTAYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFI-LAFP 59
           I+S LSI HR TGVAL      L    + +  ++     + L L++  ++    +  ++ 
Sbjct: 25  ISSTLSILHRMTGVALFFVVSILVWWLILSKYDN-----NYLQLASCCIIKICLVAFSYS 79

Query: 60  VSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVL 102
             YH  NGIRHL WD G   +IK V  TG+ ++  +IL  ++L
Sbjct: 80  WCYHLCNGIRHLFWDIGYGFSIKAVNITGWCVVVCSILLTMLL 122

Membrane-anchoring subunit of succinate dehydrogenase (SDH).

Rickettsia prowazekii (strain Madrid E) (taxid: 272947)

Close Homologs in the Non-Redundant Database Detected by BLAST

Original result of BLAST against Nonredundant Database

GI	Length	Definition	Q cover	H cover	Identity	E-value
Query	105
195452088	174	GK13274 [Drosophila willistoni] gi|19416	1.0	0.603	0.560	1e-23
194743886	152	GF18258 [Drosophila ananassae] gi|190627	1.0	0.690	0.551	1e-23
195038233	171	GH19420 [Drosophila grimshawi] gi|193894	1.0	0.614	0.542	2e-23
390179514	171	GA19764 [Drosophila pseudoobscura pseudo	1.0	0.614	0.532	6e-23
195157732	152	GL12041 [Drosophila persimilis] gi|19411	1.0	0.690	0.532	7e-23
195389516	170	GJ23871 [Drosophila virilis] gi|19415150	1.0	0.617	0.532	1e-22
289742767	173	succinate dehydrogenase cytochrome b sub	0.923	0.560	0.525	2e-21
289742765	173	succinate dehydrogenase cytochrome b sub	1.0	0.606	0.495	2e-21
21064663	171	RH04289p [Drosophila melanogaster]	1.0	0.614	0.532	4e-21
45550736	171	succinate dehydrogenase C, isoform A [Dr	1.0	0.614	0.532	5e-21

>gi|195452088|ref|XP_002073207.1| GK13274 [Drosophila willistoni] gi|194169292|gb|EDW84193.1| GK13274 [Drosophila willistoni]

 Score =  113 bits (283), Expect = 1e-23,   Method: Compositional matrix adjust.
 Identities = 60/107 (56%), Positives = 79/107 (73%), Gaps = 2/107 (1%)

Query: 1   ITSVLSITHRGTGVALTA--YALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAF 58
           +TS+LSITHRGTG+AL    +ALGL  +  + DI+  V+ V+ L LS   L A KFI+A+
Sbjct: 68  LTSILSITHRGTGMALGVGVWALGLGALISSHDISHYVTIVEGLQLSDAQLTAIKFIIAY 127

Query: 59  PVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
           P  +HTANGIRHL+WDTGR L IK+VY+TGYAML A+ + + +L LL
Sbjct: 128 PAGFHTANGIRHLLWDTGRFLKIKEVYSTGYAMLAASFVLSGILALL 174

Source: Drosophila willistoni

Species: Drosophila willistoni

Genus: Drosophila

Family: Drosophilidae

Order: Diptera

Class: Insecta

Phylum: Arthropoda

Superkingdom: Eukaryota

>gi|194743886|ref|XP_001954429.1| GF18258 [Drosophila ananassae] gi|190627466|gb|EDV42990.1| GF18258 [Drosophila ananassae]

 Score =  113 bits (283), Expect = 1e-23,   Method: Compositional matrix adjust.
 Identities = 59/107 (55%), Positives = 77/107 (71%), Gaps = 2/107 (1%)

Query: 1   ITSVLSITHRGTGVALTA--YALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAF 58
           +TS+LSI HRGTG+AL A  +ALG+  +  + DIN   + V+ L LS   L A KFI+A+
Sbjct: 46  LTSMLSIMHRGTGLALGAGVWALGVGALISSHDINHYATMVEGLQLSGATLTALKFIIAY 105

Query: 59  PVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
           PV YHTANGIRHL+WDTGR L IK+VY+TGYAM+  + +   +L LL
Sbjct: 106 PVGYHTANGIRHLLWDTGRFLKIKEVYSTGYAMVATSFILTAILALL 152

Source: Drosophila ananassae

Species: Drosophila ananassae

Genus: Drosophila

Family: Drosophilidae

Order: Diptera

Class: Insecta

Phylum: Arthropoda

Superkingdom: Eukaryota

>gi|195038233|ref|XP_001990564.1| GH19420 [Drosophila grimshawi] gi|193894760|gb|EDV93626.1| GH19420 [Drosophila grimshawi]

 Score =  112 bits (281), Expect = 2e-23,   Method: Compositional matrix adjust.
 Identities = 58/107 (54%), Positives = 77/107 (71%), Gaps = 2/107 (1%)

Query: 1   ITSVLSITHRGTGVALT--AYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAF 58
           +TS+LSI HRGTG+AL    + LGL  +  + DI+  V+ V+ L LS   L A KFI+A+
Sbjct: 65  LTSMLSIMHRGTGLALGMGVWGLGLGALIASQDISHYVTMVEGLQLSGATLTAIKFIIAY 124

Query: 59  PVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
           PV YH+ANGIRHL+WDTGR L IK+VY+TGYAM+ A+ +   +L LL
Sbjct: 125 PVGYHSANGIRHLLWDTGRFLKIKEVYSTGYAMVAASFVLTAILALL 171

Source: Drosophila grimshawi

Species: Drosophila grimshawi

Genus: Drosophila

Family: Drosophilidae

Order: Diptera

Class: Insecta

Phylum: Arthropoda

Superkingdom: Eukaryota

>gi|390179514|ref|XP_003736918.1| GA19764 [Drosophila pseudoobscura pseudoobscura] gi|388859883|gb|EIM52991.1| GA19764 [Drosophila pseudoobscura pseudoobscura]

 Score =  111 bits (277), Expect = 6e-23,   Method: Compositional matrix adjust.
 Identities = 57/107 (53%), Positives = 76/107 (71%), Gaps = 2/107 (1%)

Query: 1   ITSVLSITHRGTGVALTA--YALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAF 58
           +TS+LS+ HRGTG+AL    +ALGL  +  + DI+  V+ V+ L LS   L A KFI+A+
Sbjct: 65  LTSILSVMHRGTGMALGVGVWALGLGALISSHDISHYVTMVEGLQLSGATLTALKFIIAY 124

Query: 59  PVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
           P  YHTANGIRHL WDTGR L IK+VY+TGYAM+ A+ +   +L L+
Sbjct: 125 PAGYHTANGIRHLFWDTGRFLKIKEVYSTGYAMVAASFVLTAILALI 171

Source: Drosophila pseudoobscura pseudoobscura

Species: Drosophila pseudoobscura

Genus: Drosophila

Family: Drosophilidae

Order: Diptera

Class: Insecta

Phylum: Arthropoda

Superkingdom: Eukaryota

>gi|195157732|ref|XP_002019750.1| GL12041 [Drosophila persimilis] gi|194116341|gb|EDW38384.1| GL12041 [Drosophila persimilis]

 Score =  111 bits (277), Expect = 7e-23,   Method: Compositional matrix adjust.
 Identities = 57/107 (53%), Positives = 76/107 (71%), Gaps = 2/107 (1%)

Query: 1   ITSVLSITHRGTGVALTA--YALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAF 58
           +TS+LS+ HRGTG+AL    +ALGL  +  + DI+  V+ V+ L LS   L A KFI+A+
Sbjct: 46  LTSILSVMHRGTGMALGVGVWALGLGALISSHDISHYVTMVEGLQLSGATLTALKFIIAY 105

Query: 59  PVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
           P  YHTANGIRHL WDTGR L IK+VY+TGYAM+ A+ +   +L L+
Sbjct: 106 PAGYHTANGIRHLFWDTGRFLKIKEVYSTGYAMVAASFVLTAILALI 152

Source: Drosophila persimilis

Species: Drosophila persimilis

Genus: Drosophila

Family: Drosophilidae

Order: Diptera

Class: Insecta

Phylum: Arthropoda

Superkingdom: Eukaryota

>gi|195389516|ref|XP_002053422.1| GJ23871 [Drosophila virilis] gi|194151508|gb|EDW66942.1| GJ23871 [Drosophila virilis]

 Score =  110 bits (274), Expect = 1e-22,   Method: Compositional matrix adjust.
 Identities = 57/107 (53%), Positives = 75/107 (70%), Gaps = 2/107 (1%)

Query: 1   ITSVLSITHRGTGVALT--AYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAF 58
           +TS+LSI HRGTG+AL    + LGL  +  + DI   V+ V+ L LS   L A KFI+A+
Sbjct: 64  LTSMLSIMHRGTGLALGIGVWGLGLGALIASQDIGHYVTMVEGLQLSGAALTAIKFIIAY 123

Query: 59  PVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
           PV YH+ANGIRHLIWDTGR L IK+VY+TGY M+  +++   +L LL
Sbjct: 124 PVGYHSANGIRHLIWDTGRFLKIKEVYSTGYVMVATSVVLTAILALL 170

Source: Drosophila virilis

Species: Drosophila virilis

Genus: Drosophila

Family: Drosophilidae

Order: Diptera

Class: Insecta

Phylum: Arthropoda

Superkingdom: Eukaryota

>gi|289742767|gb|ADD20131.1| succinate dehydrogenase cytochrome b subunit [Glossina morsitans morsitans]

 Score =  106 bits (265), Expect = 2e-21,   Method: Compositional matrix adjust.
 Identities = 52/99 (52%), Positives = 73/99 (73%), Gaps = 2/99 (2%)

Query: 1   ITSVLSITHRGTGVALTA--YALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAF 58
           +TS+LS+THRGTG+ LTA  +ALGLA +    DI +  S ++ L+L    L   KF+ AF
Sbjct: 67  LTSLLSVTHRGTGMVLTAGVWALGLAALISPQDIGNYASVIEGLHLGGGTLTVLKFMFAF 126

Query: 59  PVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAIL 97
           P+++HTANG+RHL+WDTGR L IK+VY+TGY M+G + +
Sbjct: 127 PLAFHTANGVRHLLWDTGRFLKIKEVYSTGYVMVGMSFV 165

Source: Glossina morsitans morsitans

Species: Glossina morsitans

Genus: Glossina

Family: Glossinidae

Order: Diptera

Class: Insecta

Phylum: Arthropoda

Superkingdom: Eukaryota

>gi|289742765|gb|ADD20130.1| succinate dehydrogenase cytochrome b subunit [Glossina morsitans morsitans]

 Score =  106 bits (265), Expect = 2e-21,   Method: Compositional matrix adjust.
 Identities = 53/107 (49%), Positives = 77/107 (71%), Gaps = 2/107 (1%)

Query: 1   ITSVLSITHRGTGVALTA--YALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAF 58
           +TS+LS+THRGTG+ LTA  +ALGLA +    DI +  S ++ L+L    L   KF+ AF
Sbjct: 67  LTSLLSVTHRGTGMVLTAGVWALGLAALISPQDIGNYASVIEGLHLGGGTLTFLKFMFAF 126

Query: 59  PVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
           P+++HTANG+RHL+WDTGR L IK+VY+TGY M+G + +   +L ++
Sbjct: 127 PLAFHTANGVRHLLWDTGRFLKIKEVYSTGYVMVGTSFVLAAMLAMI 173

Source: Glossina morsitans morsitans

Species: Glossina morsitans

Genus: Glossina

Family: Glossinidae

Order: Diptera

Class: Insecta

Phylum: Arthropoda

Superkingdom: Eukaryota

>gi|21064663|gb|AAM29561.1| RH04289p [Drosophila melanogaster]

 Score =  105 bits (261), Expect = 4e-21,   Method: Compositional matrix adjust.
 Identities = 57/107 (53%), Positives = 74/107 (69%), Gaps = 2/107 (1%)

Query: 1   ITSVLSITHRGTGVALTAYALGLAGVGLTT--DINSVVSFVDALNLSAPILLAGKFILAF 58
           +TS+LSI HRGTG+AL     GL    L +  DI+  V+ V+ L LS   L A KFI+A+
Sbjct: 65  LTSMLSICHRGTGLALGVGVWGLGLGALISSHDISHYVTMVEGLQLSGATLTALKFIIAY 124

Query: 59  PVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
           P  YHTANGIRHL+WDTGR L IK+VY+TGYAM+  + + + +L LL
Sbjct: 125 PAGYHTANGIRHLLWDTGRFLKIKEVYSTGYAMVATSFVLSAILALL 171

Source: Drosophila melanogaster

Species: Drosophila melanogaster

Genus: Drosophila

Family: Drosophilidae

Order: Diptera

Class: Insecta

Phylum: Arthropoda

Superkingdom: Eukaryota

>gi|45550736|ref|NP_650047.3| succinate dehydrogenase C, isoform A [Drosophila melanogaster] gi|442618548|ref|NP_001262472.1| succinate dehydrogenase C, isoform B [Drosophila melanogaster] gi|195329931|ref|XP_002031662.1| GM26120 [Drosophila sechellia] gi|17946639|gb|AAL49350.1| RH44771p [Drosophila melanogaster] gi|45446453|gb|AAF54602.2| succinate dehydrogenase C, isoform A [Drosophila melanogaster] gi|194120605|gb|EDW42648.1| GM26120 [Drosophila sechellia] gi|440217315|gb|AGB95854.1| succinate dehydrogenase C, isoform B [Drosophila melanogaster]

 Score =  105 bits (261), Expect = 5e-21,   Method: Compositional matrix adjust.
 Identities = 57/107 (53%), Positives = 74/107 (69%), Gaps = 2/107 (1%)

Query: 1   ITSVLSITHRGTGVALTAYALGLAGVGLTT--DINSVVSFVDALNLSAPILLAGKFILAF 58
           +TS+LSI HRGTG+AL     GL    L +  DI+  V+ V+ L LS   L A KFI+A+
Sbjct: 65  LTSMLSICHRGTGLALGVGVWGLGLGALISSHDISHYVTMVEGLQLSGATLTALKFIIAY 124

Query: 59  PVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
           P  YHTANGIRHL+WDTGR L IK+VY+TGYAM+  + + + +L LL
Sbjct: 125 PAGYHTANGIRHLLWDTGRFLKIKEVYSTGYAMVATSFVLSAILALL 171

Source: Drosophila melanogaster

Species: Drosophila melanogaster

Genus: Drosophila

Family: Drosophilidae

Order: Diptera

Class: Insecta

Phylum: Arthropoda

Superkingdom: Eukaryota

---

Prediction of Gene Ontology (GO) Terms

Close Homologs with Gene Ontology terms Detected by BLAST

Original result of BLAST against Gene Ontology (AMIGO)

ID	Length	Definition	Q cover	H cover	Identity	E-value
Query	105
FB|FBgn0037873	171	SdhC "Succinate dehydrogenase	1.0	0.614	0.532	9.7e-25
UNIPROTKB|P70097	169	SDHC "Succinate dehydrogenase	0.971	0.603	0.432	1.7e-18
ZFIN|ZDB-GENE-040801-26	169	sdhc "succinate dehydrogenase	1.0	0.621	0.411	7.5e-18
UNIPROTKB|P35720	169	SDHC "Succinate dehydrogenase	0.961	0.597	0.407	1.8e-16
UNIPROTKB|E2R9X3	135	SDHC "Uncharacterized protein"	0.961	0.748	0.417	2.3e-16
MGI|MGI:1913302	169	Sdhc "succinate dehydrogenase	0.904	0.562	0.402	2.3e-16
UNIPROTKB|E2R9X4	168	SDHC "Uncharacterized protein"	0.933	0.583	0.43	2.9e-16
UNIPROTKB|Q99643	169	SDHC "Succinate dehydrogenase	0.961	0.597	0.388	9.8e-16
UNIPROTKB|D0VWV4	169	SDHC "Succinate dehydrogenase	0.961	0.597	0.398	3.3e-15
RGD|1359454	169	Sdhc "succinate dehydrogenase	0.961	0.597	0.359	4.2e-15

FB|FBgn0037873 SdhC "Succinate dehydrogenase C" [Drosophila melanogaster (taxid:7227)]

 Score = 282 (104.3 bits), Expect = 9.7e-25, P = 9.7e-25
 Identities = 57/107 (53%), Positives = 76/107 (71%)

Query:     1 ITSVLSITHRGTGVALTA--YALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAF 58
             +TS+LSI HRGTG+AL    + LGL  +  + DI+  V+ V+ L LS   L A KFI+A+
Sbjct:    65 LTSMLSICHRGTGLALGVGVWGLGLGALISSHDISHYVTMVEGLQLSGATLTALKFIIAY 124

Query:    59 PVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
             P  YHTANGIRHL+WDTGR L IK+VY+TGYAM+  + + + +L LL
Sbjct:   125 PAGYHTANGIRHLLWDTGRFLKIKEVYSTGYAMVATSFVLSAILALL 171

GO:0006105 "succinate metabolic process" evidence=ISS

GO:0000104 "succinate dehydrogenase activity" evidence=ISS

GO:0005749 "mitochondrial respiratory chain complex II" evidence=ISS

GO:0006099 "tricarboxylic acid cycle" evidence=ISS

GO:0006121 "mitochondrial electron transport, succinate to ubiquinone" evidence=ISS;IMP

GO:0008177 "succinate dehydrogenase (ubiquinone) activity" evidence=ISS

GO:0009055 "electron carrier activity" evidence=IEA

GO:0006979 "response to oxidative stress" evidence=IMP

GO:0008340 "determination of adult lifespan" evidence=IMP

UNIPROTKB|P70097 SDHC "Succinate dehydrogenase cytochrome b560 subunit, mitochondrial" [Cricetulus griseus (taxid:10029)]

 Score = 223 (83.6 bits), Expect = 1.7e-18, P = 1.7e-18
 Identities = 45/104 (43%), Positives = 69/104 (66%)

Query:     4 VLSITHRGTGVALTAYA--LGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVS 61
             V+SI HRGTGVAL+      GL+ + L  +  S + F+ +L L   ++ + KF+L FP+ 
Sbjct:    66 VMSICHRGTGVALSGGVSLFGLSALLLPGNFESYLMFIKSLCLGPALIHSAKFVLVFPLM 125

Query:    62 YHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
             YH+ NGIRHLIWD G+ L+I +VY +G A+L  A+L+++ L  +
Sbjct:   126 YHSLNGIRHLIWDLGKGLSISQVYQSGVAVLMLAVLSSVGLAAM 169

GO:0005743 "mitochondrial inner membrane" evidence=ISS

GO:0005749 "mitochondrial respiratory chain complex II" evidence=ISS

GO:0020037 "heme binding" evidence=ISS

ZFIN|ZDB-GENE-040801-26 sdhc "succinate dehydrogenase complex, subunit C, integral membrane protein" [Danio rerio (taxid:7955)]

 Score = 217 (81.4 bits), Expect = 7.5e-18, P = 7.5e-18
 Identities = 44/107 (41%), Positives = 62/107 (57%)

Query:     1 ITSVLSITHRGTGVALTA--YALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAF 58
             +   +SI+HRGTG+AL++   A  LA + L       +  + +L      L   KF LAF
Sbjct:    63 VPMAMSISHRGTGIALSSGISAFALAALVLPESYPYYLDLIHSLTFGPQFLAFSKFALAF 122

Query:    59 PVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
             PV YHT NGIRHL WD G+   I +VY +GY +LG  +LT++ L  +
Sbjct:   123 PVVYHTYNGIRHLAWDAGKGFKIPEVYRSGYVVLGLTVLTSIGLAAM 169

GO:0006099 "tricarboxylic acid cycle" evidence=IEA

GO:0000104 "succinate dehydrogenase activity" evidence=IEA

GO:0016627 "oxidoreductase activity, acting on the CH-CH group of donors" evidence=IEA

GO:0045281 "succinate dehydrogenase complex" evidence=IEA

GO:0009055 "electron carrier activity" evidence=IEA

GO:0016020 "membrane" evidence=IEA

UNIPROTKB|P35720 SDHC "Succinate dehydrogenase cytochrome b560 subunit, mitochondrial" [Bos taurus (taxid:9913)]

 Score = 204 (76.9 bits), Expect = 1.8e-16, P = 1.8e-16
 Identities = 42/103 (40%), Positives = 65/103 (63%)

Query:     5 LSITHRGTGVALTAYA--LGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSY 62
             +SI HRGTG+AL+A     GL+ + +     S + FV +L L   ++   KF L FP+ Y
Sbjct:    67 MSICHRGTGIALSAGVSLFGLSALLVPGSFESHLEFVKSLCLGPALIHTAKFALVFPLMY 126

Query:    63 HTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
             HT NGIRHL+WD G+ LTI +++ +G A+L   +L+++ L  +
Sbjct:   127 HTWNGIRHLMWDLGKGLTISQLHQSGVAVLVLTVLSSVGLAAM 169

GO:0005743 "mitochondrial inner membrane" evidence=ISS;TAS

GO:0005749 "mitochondrial respiratory chain complex II" evidence=ISS

GO:0020037 "heme binding" evidence=ISS

GO:0006099 "tricarboxylic acid cycle" evidence=IEA

GO:0046872 "metal ion binding" evidence=IEA

GO:0022900 "electron transport chain" evidence=IEA

GO:0016021 "integral to membrane" evidence=IEA

GO:0009055 "electron carrier activity" evidence=IEA

GO:0000104 "succinate dehydrogenase activity" evidence=IEA

UNIPROTKB|E2R9X3 SDHC "Uncharacterized protein" [Canis lupus familiaris (taxid:9615)]

 Score = 203 (76.5 bits), Expect = 2.3e-16, P = 2.3e-16
 Identities = 43/103 (41%), Positives = 64/103 (62%)

Query:     5 LSITHRGTGVALTAYA--LGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSY 62
             +SI HRGTGVAL+A     GL+ + +  +  S +  V +L L   ++   KF L FP+ Y
Sbjct:    33 MSICHRGTGVALSAGVSLFGLSALLVPGNFESHLELVKSLCLGPSLIYTAKFALVFPLMY 92

Query:    63 HTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
             HT NGIRHLIWD G+ L I ++Y +G A+L   +L+++ L  +
Sbjct:    93 HTWNGIRHLIWDLGKGLKIPQLYQSGVAVLVLTVLSSVGLAAM 135

GO:0045281 "succinate dehydrogenase complex" evidence=IEA

GO:0009055 "electron carrier activity" evidence=IEA

GO:0006099 "tricarboxylic acid cycle" evidence=IEA

GO:0000104 "succinate dehydrogenase activity" evidence=IEA

MGI|MGI:1913302 Sdhc "succinate dehydrogenase complex, subunit C, integral membrane protein" [Mus musculus (taxid:10090)]

 Score = 203 (76.5 bits), Expect = 2.3e-16, P = 2.3e-16
 Identities = 39/97 (40%), Positives = 64/97 (65%)

Query:     5 LSITHRGTGVALTAYA--LGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSY 62
             LS+ HRG+G+AL+      GL+ + L  +  S + FV +L L   ++ + KF+L FP+ Y
Sbjct:    67 LSVCHRGSGIALSGGVSLFGLSALLLPGNFESYLMFVKSLCLGPTLIYSAKFVLVFPLMY 126

Query:    63 HTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTN 99
             H+ NGIRHL+WD G+ L I +V+ +G A++  A+L++
Sbjct:   127 HSLNGIRHLLWDLGKGLAIPQVWLSGVAVVVLAVLSS 163

GO:0000104 "succinate dehydrogenase activity" evidence=IEA

GO:0005739 "mitochondrion" evidence=IDA

GO:0005743 "mitochondrial inner membrane" evidence=IEA

GO:0006099 "tricarboxylic acid cycle" evidence=IEA

GO:0006810 "transport" evidence=IEA

GO:0009055 "electron carrier activity" evidence=IEA

GO:0016020 "membrane" evidence=IEA

GO:0016021 "integral to membrane" evidence=IEA

GO:0016627 "oxidoreductase activity, acting on the CH-CH group of donors" evidence=IEA

GO:0022900 "electron transport chain" evidence=IEA

GO:0045281 "succinate dehydrogenase complex" evidence=IEA

GO:0046872 "metal ion binding" evidence=IEA

UNIPROTKB|E2R9X4 SDHC "Uncharacterized protein" [Canis lupus familiaris (taxid:9615)]

 Score = 202 (76.2 bits), Expect = 2.9e-16, P = 2.9e-16
 Identities = 43/100 (43%), Positives = 63/100 (63%)

Query:     5 LSITHRGTGVALTAYA--LGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSY 62
             +SI HRGTGVAL+A     GL+ + +  +  S +  V +L L   ++   KF L FP+ Y
Sbjct:    67 MSICHRGTGVALSAGVSLFGLSALLVPGNFESHLELVKSLCLGPSLIYTAKFALVFPLMY 126

Query:    63 HTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVL 102
             HT NGIRHLIWD G+ L I ++Y +G A+L   +L+++ L
Sbjct:   127 HTWNGIRHLIWDLGKGLKIPQLYQSGVAVLVLTVLSSVGL 166

GO:0045281 "succinate dehydrogenase complex" evidence=IEA

GO:0009055 "electron carrier activity" evidence=IEA

GO:0006099 "tricarboxylic acid cycle" evidence=IEA

GO:0000104 "succinate dehydrogenase activity" evidence=IEA

UNIPROTKB|Q99643 SDHC "Succinate dehydrogenase cytochrome b560 subunit, mitochondrial" [Homo sapiens (taxid:9606)]

 Score = 197 (74.4 bits), Expect = 9.8e-16, P = 9.8e-16
 Identities = 40/103 (38%), Positives = 63/103 (61%)

Query:     5 LSITHRGTGVALTAYA--LGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSY 62
             +SI HRGTG+AL+A     G++ + L  +  S +  V +L L   ++   KF L FP+ Y
Sbjct:    67 MSICHRGTGIALSAGVSLFGMSALLLPGNFESYLELVKSLCLGPALIHTAKFALVFPLMY 126

Query:    63 HTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
             HT NGIRHL+WD G+ L I ++Y +G  +L   +L+++ L  +
Sbjct:   127 HTWNGIRHLMWDLGKGLKIPQLYQSGVVVLVLTVLSSMGLAAM 169

GO:0000104 "succinate dehydrogenase activity" evidence=IEA

GO:0009055 "electron carrier activity" evidence=IEA

GO:0046872 "metal ion binding" evidence=IEA

GO:0006099 "tricarboxylic acid cycle" evidence=IEA;TAS

GO:0055114 "oxidation-reduction process" evidence=TAS

GO:0009060 "aerobic respiration" evidence=TAS

GO:0016021 "integral to membrane" evidence=TAS

GO:0045273 "respiratory chain complex II" evidence=TAS

GO:0005739 "mitochondrion" evidence=TAS

GO:0005743 "mitochondrial inner membrane" evidence=ISS;TAS

GO:0020037 "heme binding" evidence=ISS

GO:0005749 "mitochondrial respiratory chain complex II" evidence=ISS

GO:0022904 "respiratory electron transport chain" evidence=TAS

GO:0044281 "small molecule metabolic process" evidence=TAS

UNIPROTKB|D0VWV4 SDHC "Succinate dehydrogenase cytochrome b560 subunit, mitochondrial" [Sus scrofa (taxid:9823)]

 Score = 192 (72.6 bits), Expect = 3.3e-15, P = 3.3e-15
 Identities = 41/103 (39%), Positives = 63/103 (61%)

Query:     5 LSITHRGTGVALTAYA--LGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSY 62
             +SI HRGTG+AL+A     GL+ + L  +  S +  V +L L   ++   KF + FP+ Y
Sbjct:    67 MSICHRGTGIALSAGVSLFGLSALLLPGNFESHLELVKSLCLGPTLIYTAKFGIVFPLMY 126

Query:    63 HTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
             HT NGIRHLIWD G+ LTI ++  +G  +L   +L+++ L  +
Sbjct:   127 HTWNGIRHLIWDLGKGLTIPQLTQSGVVVLILTVLSSVGLAAM 169

GO:0005749 "mitochondrial respiratory chain complex II" evidence=IDA

GO:0020037 "heme binding" evidence=IDA

GO:0005743 "mitochondrial inner membrane" evidence=IDA

GO:0005515 "protein binding" evidence=IPI

GO:0006099 "tricarboxylic acid cycle" evidence=IEA

GO:0046872 "metal ion binding" evidence=IEA

GO:0022900 "electron transport chain" evidence=IEA

GO:0016021 "integral to membrane" evidence=IEA

GO:0009055 "electron carrier activity" evidence=IEA

GO:0000104 "succinate dehydrogenase activity" evidence=IEA

RGD|1359454 Sdhc "succinate dehydrogenase complex, subunit C, integral membrane protein" [Rattus norvegicus (taxid:10116)]

 Score = 191 (72.3 bits), Expect = 4.2e-15, P = 4.2e-15
 Identities = 37/103 (35%), Positives = 64/103 (62%)

Query:     5 LSITHRGTGVALTAYA--LGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSY 62
             +S+ HRG+G+A++      GL+ + L  +  S +  V +L L   ++ A KF+L FP+ Y
Sbjct:    67 MSVCHRGSGIAMSGGVSLFGLSALLLPGNFESYLMLVKSLCLGPALIHAAKFVLVFPLMY 126

Query:    63 HTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
             H+ NG+RHL+WD G+ L+I +V  +G  +L  A+L++  L  +
Sbjct:   127 HSLNGVRHLMWDLGKGLSISQVQLSGVTVLVLAVLSSAGLAAI 169

GO:0000104 "succinate dehydrogenase activity" evidence=IEA

GO:0003674 "molecular_function" evidence=ND

GO:0005575 "cellular_component" evidence=ND

GO:0005739 "mitochondrion" evidence=IEA;ISO

GO:0006099 "tricarboxylic acid cycle" evidence=IEA

GO:0008150 "biological_process" evidence=ND

GO:0009055 "electron carrier activity" evidence=IEA

GO:0045281 "succinate dehydrogenase complex" evidence=IEA

---

Prediction of Enzyme Commission (EC) Number

EC Number Prediction by Annotation Transfer from SWISS-PROT Entries

Original result of BLAST against SWISS-PROT

ID	Name	Annotated EC number	Identity	Query coverage	Hit coverage	RBH(Q2H)	RBH(H2Q)
Q92J99	DHSC_RICCN	No assigned EC number	0.3300	0.9238	0.7822	yes	N/A
Q1RHB5	DHSC_RICBR	No assigned EC number	0.3529	0.9428	0.792	yes	N/A
Q68XP1	DHSC_RICTY	No assigned EC number	0.3203	0.9238	0.7822	yes	N/A
Q4UKC1	DHSC_RICFE	No assigned EC number	0.3592	0.9238	0.7822	yes	N/A
P41085	DHSC_RICPR	No assigned EC number	0.3300	0.9238	0.7822	yes	N/A

EC Number Prediction by EFICAz Software

No EC number assignment, probably not an enzyme!

---

Conserved Domains and Related Protein Families

Conserved Domains Detected by RPS-BLAST

Original result of RPS-BLAST against CDD database

ID	Length	Definition	E-value
Query	105
cd03499	117	cd03499, SQR_TypeC_SdhC, Succinate:quinone oxidore	3e-21
PLN00127	178	PLN00127, PLN00127, succinate dehydrogenase (ubiqu	1e-13
pfam01127	123	pfam01127, Sdh_cyt, Succinate dehydrogenase/Fumara	2e-13
TIGR02970	120	TIGR02970, succ_dehyd_cytB, succinate dehydrogenas	2e-11
COG2009	132	COG2009, SdhC, Succinate dehydrogenase/fumarate re	2e-09
cd03493	98	cd03493, SQR_QFR_TM, Succinate:quinone oxidoreduct	1e-07
PRK09487	129	PRK09487, sdhC, succinate dehydrogenase cytochrome	0.001

>gnl|CDD|239579 cd03499, SQR_TypeC_SdhC, Succinate:quinone oxidoreductase (SQR) Type C subfamily, Succinate dehydrogenase C (SdhC) subunit; composed of bacterial SdhC and eukaryotic large cytochrome b binding (CybL) proteins

 Score = 80.7 bits (200), Expect = 3e-21
 Identities = 38/106 (35%), Positives = 57/106 (53%), Gaps = 4/106 (3%)

Query: 1   ITSVLSITHRGTGVAL--TAYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAF 58
           +T++LSI HR TGVAL      L    +   +   S  S    L   + +     F L +
Sbjct: 14  LTAILSILHRITGVALFLGLPLLLWWLLASLSSPESFESVSALL--GSWLGKLVLFGLTW 71

Query: 59  PVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTL 104
            + YH  NGIRHLIWD G+ L +K VY +GYA+L  +++  ++L +
Sbjct: 72  ALFYHLLNGIRHLIWDLGKGLELKTVYKSGYAVLVLSVVLTVLLGI 117

SQR catalyzes the oxidation of succinate to fumarate coupled to the reduction of quinone to quinol. Members of this family reduce high potential quinones such as ubiquinone. SQR is also called succinate dehydrogenase or Complex II, and is part of the citric acid cycle and the aerobic respiratory chain. SQR is composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. Proteins in this subfamily are classified as Type C SQRs because they contain two transmembrane subunits and one heme group. The heme and quinone binding sites reside in the transmembrane subunits. The SdhC or CybL protein is one of the two transmembrane subunits of bacterial and eukaryotic SQRs. The two-electron oxidation of succinate in the flavoprotein active site is coupled to the two-electron reduction of quinone in the membrane anchor subunits via electron transport through FAD and three iron-sulfur centers. The reversible reduction of quinone is an essential feature of respiration, allowing transfer of electrons between respiratory complexes. Length = 117

>gnl|CDD|177738 PLN00127, PLN00127, succinate dehydrogenase (ubiquinone) cytochrome b subunit; Provisional

 Score = 62.6 bits (152), Expect = 1e-13
 Identities = 32/107 (29%), Positives = 54/107 (50%), Gaps = 2/107 (1%)

Query: 1   ITSVLSITHRGTGVALTAYALGLAGVGLTTDINSVVSFVDALNLSAPILLAG-KFILAFP 59
           + ++ SIT+R TG  L+  A G   + L     +V + ++      P+++   KF ++FP
Sbjct: 72  VVALSSITNRVTGCVLSGGAAGGGVLALVGGSEAVPATMEGFKSGGPLIVFPAKFAVSFP 131

Query: 60  VSYHTANGIRHLIWD-TGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
             YHT  G+RHL+WD T   L    V  + Y + GA+   +    +L
Sbjct: 132 FVYHTLGGLRHLVWDKTTEGLDNPSVEASSYGLFGASAALSAAAAVL 178

Length = 178

>gnl|CDD|216313 pfam01127, Sdh_cyt, Succinate dehydrogenase/Fumarate reductase transmembrane subunit

 Score = 60.9 bits (148), Expect = 2e-13
 Identities = 38/106 (35%), Positives = 54/106 (50%), Gaps = 4/106 (3%)

Query: 1   ITSVLSITHRGTGVALTAYALGLAGVGLTTDIN----SVVSFVDALNLSAPILLAGKFIL 56
           + ++LSI HR TGVAL    + L    L   +     S    V    LS+P  L    +L
Sbjct: 18  LGTILSILHRITGVALAVLLIHLLLWLLLLALLLGPESYARVVGVAWLSSPFKLILLLLL 77

Query: 57  AFPVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVL 102
              + YH ANG+RHLIWD G+ L +K    TG  +L  +++  L+L
Sbjct: 78  LLALFYHAANGLRHLIWDVGKGLELKTARKTGLLVLALSVVLTLLL 123

This family includes a transmembrane protein from both the Succinate dehydrogenase and Fumarate reductase complexes. Length = 123

>gnl|CDD|234076 TIGR02970, succ_dehyd_cytB, succinate dehydrogenase, cytochrome b556 subunit

 Score = 55.7 bits (135), Expect = 2e-11
 Identities = 33/106 (31%), Positives = 54/106 (50%), Gaps = 2/106 (1%)

Query: 1   ITSVLSITHRGTGVALTAYALGLA-GVGLTTDINSVVSFVDALNLSAPILLAGKFILAFP 59
           IT++LSI HR TGV L      L   + L+       + V AL LS+P+     + L + 
Sbjct: 16  ITAILSILHRITGVLLFFGLPFLLWWLSLSLSSPESFATVHAL-LSSPLGKLILWGLLWA 74

Query: 60  VSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
           + YH   GIRHL+WD G  L +K    + + +L  +++  ++  + 
Sbjct: 75  LLYHLLAGIRHLLWDLGYGLELKSARISAWVVLVLSLVLTILAGIW 120

In E. coli and many other bacteria, two small, hydrophobic, mutually homologous subunits of succinate dehydrogenase, a TCA cycle enzyme, are SdhC and SdhD. This family is the SdhC, the cytochrome b subunit, called b556 in bacteria and b560 in mitochondria. SdhD (see TIGR02968) is called the hydrophobic membrane anchor subunit, although both SdhC and SdhD participate in anchoring the complex. In some bacteria, this cytochrome b subunit is replaced my a member of the cytochrome b558 family (see TIGR02046) [Energy metabolism, TCA cycle]. Length = 120

>gnl|CDD|224920 COG2009, SdhC, Succinate dehydrogenase/fumarate reductase, cytochrome b subunit [Energy production and conversion]

 Score = 50.8 bits (122), Expect = 2e-09
 Identities = 34/109 (31%), Positives = 50/109 (45%), Gaps = 4/109 (3%)

Query: 1   ITSVLSITHRGTGVALTAY---ALGLAGVGLTTDINSVVSFVDALNLSAPILLA-GKFIL 56
           IT   SI HR +GV L  +    + LA   L    +   +F     L    ++      L
Sbjct: 16  ITMYASILHRISGVILAFFLFVHILLASSWLAGSASFNAAFEFYHALLGSFIVKLVLLGL 75

Query: 57  AFPVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
              + YH  NGIRHL+WD G  L +K V  TG A++  + +T  +L  +
Sbjct: 76  VLALLYHGLNGIRHLLWDFGYGLELKGVGYTGAALVFFSAVTLTLLLWV 124

Length = 132

>gnl|CDD|239573 cd03493, SQR_QFR_TM, Succinate:quinone oxidoreductase (SQR) and Quinol:fumarate reductase (QFR) family, transmembrane subunits; SQR catalyzes the oxidation of succinate to fumarate coupled to the reduction of quinone to quinol, while QFR catalyzes the reverse reaction

 Score = 45.3 bits (108), Expect = 1e-07
 Identities = 32/92 (34%), Positives = 42/92 (45%)

Query: 7  ITHRGTGVALTAYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTAN 66
          I HR TGVAL  +        L               LS+P+      +L   + YH  N
Sbjct: 1  ILHRITGVALLLFLPLHLLGLLALLGGPYAFAEVVAFLSSPLGKLLYLLLLLALLYHALN 60

Query: 67 GIRHLIWDTGRALTIKKVYTTGYAMLGAAILT 98
          GIRHLIWD G+ L +K     GYA+L  ++L 
Sbjct: 61 GIRHLIWDYGKGLELKLRKALGYAVLALSVLL 92

SQR, also called succinate dehydrogenase or Complex II, is part of the citric acid cycle and the aerobic respiratory chain, while QFR is involved in anaerobic respiration with fumarate as the terminal electron acceptor. SQRs may reduce either high or low potential quinones while QFRs oxidize only low potential quinols. SQR and QFR share a common subunit arrangement, composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. The structural arrangement allows efficient electron transfer between the catalytic subunit, through iron-sulfur centers, and the transmembrane subunit(s) containing the electron donor/acceptor (quinol or quinone). The reversible reduction of quinone is an essential feature of respiration, allowing the transfer of electrons between respiratory complexes. SQRs and QFRs can be classified into five types (A-E) according to the number of their hydrophobic subunits and heme groups. This classification is consistent with the characteristics and phylogeny of the catalytic and iron-sulfur subunits. Type E proteins, e.g. non-classical archael SQRs, contain atypical transmembrane subunits and are not included in this hierarchy. The heme and quinone binding sites reside in the transmembrane subunits. Although succinate oxidation and fumarate reduction are carried out by separate enzymes in most organisms, some bifunctional enzymes that exhibit both SQR and QFR activities exist. Length = 98

>gnl|CDD|181900 PRK09487, sdhC, succinate dehydrogenase cytochrome b556 large membrane subunit; Provisional

 Score = 35.1 bits (81), Expect = 0.001
 Identities = 33/108 (30%), Positives = 54/108 (50%), Gaps = 9/108 (8%)

Query: 1   ITSVLSITHRGTGVALTAYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFIL---A 57
           IT++ SI HR +GV +T  A+G+    L T ++S   F  A  +     +  KFI+    
Sbjct: 22  ITAIASILHRVSGV-ITFVAVGILLWLLGTSLSSPEGFEQAAAIMDSFFV--KFIMWGIL 78

Query: 58  FPVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
             ++YH   GIRHL+ D G    +++    G      + +  +VL+LL
Sbjct: 79  TALAYHVVVGIRHLLMDFGY---LEETLEAGKRSAKISFVITVVLSLL 123

Length = 129

Conserved Domains Detected by HHsearch

Original result of HHsearch against CDD database

ID	Length	Definition	Probability
Query	105
PRK09487	129	sdhC succinate dehydrogenase cytochrome b556 large	99.97
PLN00127	178	succinate dehydrogenase (ubiquinone) cytochrome b	99.97
cd03499	117	SQR_TypeC_SdhC Succinate:quinone oxidoreductase (S	99.96
TIGR02970	120	succ_dehyd_cytB succinate dehydrogenase, cytochrom	99.96
KOG0449|consensus	168		99.95
COG2009	132	SdhC Succinate dehydrogenase/fumarate reductase, c	99.85
cd03501	101	SQR_TypeA_SdhC_like Succinate:quinone oxidoreducta	99.79
cd03493	98	SQR_QFR_TM Succinate:quinone oxidoreductase (SQR)	99.78
PF01127	121	Sdh_cyt: Succinate dehydrogenase/Fumarate reductas	99.74
TIGR02968	105	succ_dehyd_anc succinate dehydrogenase, hydrophobi	99.72
cd03500	106	SQR_TypeA_SdhD_like Succinate:quinone oxidoreducta	99.55
PLN00130	213	succinate dehydrogenase (SDH3); Provisional	99.43
cd03494	99	SQR_TypeC_SdhD Succinate:quinone oxidoreductase (S	99.42
COG2142	117	SdhD Succinate dehydrogenase, hydrophobic anchor s	99.18
cd03495	100	SQR_TypeC_SdhD_like Succinate:quinone oxidoreducta	99.1
cd03497	207	SQR_TypeB_1_TM Succinate:quinone oxidoreductase (S	98.73
PRK09488	115	sdhD succinate dehydrogenase cytochrome b556 small	98.67
cd03498	209	SQR_TypeB_2_TM Succinate:quinone oxidoreductase (S	98.14
cd03526	199	SQR_QFR_TypeB_TM Succinate:quinone oxidoreductase	97.64
PLN00126	129	succinate dehydrogenase, cytochrome b subunit fami	97.57
cd00581	206	QFR_TypeB_TM Quinol:fumarate reductase (QFR) Type	97.38
TIGR02046	214	sdhC_b558_fam succinate dehydrogenase (or fumarate	97.26
cd00581	206	QFR_TypeB_TM Quinol:fumarate reductase (QFR) Type	97.03
cd03497	207	SQR_TypeB_1_TM Succinate:quinone oxidoreductase (S	96.84
cd03526	199	SQR_QFR_TypeB_TM Succinate:quinone oxidoreductase	96.78
cd03498	209	SQR_TypeB_2_TM Succinate:quinone oxidoreductase (S	96.54
PRK13554	241	fumarate reductase cytochrome b-556 subunit; Provi	96.53
PRK13553	258	fumarate reductase cytochrome b-556 subunit; Provi	96.03
TIGR02046	214	sdhC_b558_fam succinate dehydrogenase (or fumarate	96.01
PRK13553	258	fumarate reductase cytochrome b-556 subunit; Provi	95.97
PRK13554	241	fumarate reductase cytochrome b-556 subunit; Provi	95.59
PRK04987	130	fumarate reductase subunit C; Provisional	94.71
PF02313	118	Fumarate_red_D: Fumarate reductase subunit D; Inte	93.94
PF02300	129	Fumarate_red_C: Fumarate reductase subunit C; Inte	91.48
cd00547	115	QFR_TypeD_subunitD Quinol:fumarate reductase (QFR)	90.82
cd00546	124	QFR_TypeD_subunitC Quinol:fumarate reductase (QFR)	89.18
PRK05470	118	fumarate reductase subunit D; Provisional	88.95
cd03496	104	SQR_TypeC_CybS SQR catalyzes the oxidation of succ	83.83
PRK13603	126	fumarate reductase subunit C; Provisional	82.16
PF07950	110	DUF1691: Protein of unknown function (DUF1691); In	81.89

>PRK09487 sdhC succinate dehydrogenase cytochrome b556 large membrane subunit; Provisional

Probab=99.97  E-value=4.4e-31  Score=178.87  Aligned_cols=98  Identities=20%  Similarity=0.248  Sum_probs=86.6

Q ss_pred             ChHHHHHHHHHHHHHHHHH-H---HHHHh-hcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHh
Q psy9433           1 ITSVLSITHRGTGVALTAY-A---LGLAG-VGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDT   75 (105)
Q Consensus         1 it~~~SI~HRiTGv~L~~~-~---~~l~~-l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~   75 (105)
                      +||++||+||+||++|+++ .   +.+.. +.+|+.|+.+.+..++     +++|+++++++++++||++|||||++||.
T Consensus        22 ~t~~~SIlHRiSGv~L~~~~~~~~~~l~~~~~~p~~f~~~~~~~~~-----~~~k~~~~~~~~al~yH~~nGIRHL~wD~   96 (129)
T PRK09487         22 ITAIASILHRVSGVITFVAVGILLWLLGTSLSSPEGFEQAAAIMDS-----FFVKFIMWGILTALAYHVVVGIRHLLMDF   96 (129)
T ss_pred             hhHHHHHHHHhHhHHHHHHHHHHHHHHHHHccCHHHHHHHHHHHhH-----HHHHHHHHHHHHHHHHHHHhhHHHHHHHc
Confidence            5899999999999999987 2   33332 4799999999876655     48899999999999999999999999999


Q ss_pred             ccccc-HHHHHHHHHHHHHHHHHHHHHHH
Q psy9433          76 GRALT-IKKVYTTGYAMLGAAILTNLVLT  103 (105)
Q Consensus        76 g~g~~-~~~~~~~~~~v~~~s~v~t~~~~  103 (105)
                      |+|+| +|+.+++++.+++++++++++.+
T Consensus        97 g~g~~~~~~~~~sa~~v~~~s~vlt~~~g  125 (129)
T PRK09487         97 GYLEETLEAGKRSAKISFVITVVLSLLAG  125 (129)
T ss_pred             cccchhHHHHHHHHHHHHHHHHHHHHHHH
Confidence            99999 99999999999999999998764

>PLN00127 succinate dehydrogenase (ubiquinone) cytochrome b subunit; Provisional

Probab=99.97  E-value=2.7e-30  Score=182.57  Aligned_cols=103  Identities=31%  Similarity=0.513  Sum_probs=88.8

Q ss_pred             ChHHHHHHHHHHHHHHHHH--HHH-HHhhcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHh-c
Q psy9433           1 ITSVLSITHRGTGVALTAY--ALG-LAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDT-G   76 (105)
Q Consensus         1 it~~~SI~HRiTGv~L~~~--~~~-l~~l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~-g   76 (105)
                      +||++||+|||||++|+++  +.+ ...+.+|++|+.+.+.+.+.  ++++.+.+|++++++++||++||+|||+||. |
T Consensus        72 ltai~SIlHRITGv~L~~g~~~~~l~~l~~~~e~f~~~~~~~~s~--~~~~~~~~kf~~~~a~~YH~lnGIRHLiWD~~g  149 (178)
T PLN00127         72 VVALSSITNRVTGCVLSGGAAGGGVLALVGGSEAVPATMEGFKSG--GPLIVFPAKFAVSFPFVYHTLGGLRHLVWDKTT  149 (178)
T ss_pred             chhhhhHHHHHHHHHHHHHHHHHHHHHHHcCHHHHHHHHHHHhhh--hHHHHHHHHHHHHHHHHHHHHhhHHHHHHhccC
Confidence            5899999999999999998  222 23356899998887766654  4556788999999999999999999999995 9


Q ss_pred             ccccHHHHHHHHHHHHHHHHHHHHHHHhC
Q psy9433          77 RALTIKKVYTTGYAMLGAAILTNLVLTLL  105 (105)
Q Consensus        77 ~g~~~~~~~~~~~~v~~~s~v~t~~~~~~  105 (105)
                      +|+|++++++++|+++++|++++++++++
T Consensus       150 ~G~~l~~~~~s~~~vl~~s~vltl~~~~~  178 (178)
T PLN00127        150 EGLDNPSVEASSYGLFGASAALSAAAAVL  178 (178)
T ss_pred             cCccHHHHHHHHHHHHHHHHHHHHHHHhC
Confidence            99999999999999999999999998864

>cd03499 SQR_TypeC_SdhC Succinate:quinone oxidoreductase (SQR) Type C subfamily, Succinate dehydrogenase C (SdhC) subunit; composed of bacterial SdhC and eukaryotic large cytochrome b binding (CybL) proteins

Probab=99.96  E-value=2.1e-28  Score=162.58  Aligned_cols=98  Identities=39%  Similarity=0.560  Sum_probs=85.5

Q ss_pred             ChHHHHHHHHHHHHHHHHH-HHHHHh----hcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHh
Q psy9433           1 ITSVLSITHRGTGVALTAY-ALGLAG----VGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDT   75 (105)
Q Consensus         1 it~~~SI~HRiTGv~L~~~-~~~l~~----l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~   75 (105)
                      +||++||+||+||++|+++ .+....    ..+|++|+.+.+...+     +..+.++++.+++++||.+||+||++||+
T Consensus        14 ~~~~~Si~hRiSGv~L~~~~~~~~~~~~~~~~~~~~y~~~~~~~~~-----~~~~~~~~~~~~~~~yH~~nGiRhll~D~   88 (117)
T cd03499          14 LTAILSILHRITGVALFLGLPLLLWWLLASLSSPESFESVSALLGS-----WLGKLVLFGLTWALFYHLLNGIRHLIWDL   88 (117)
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhcCHHHHHHHHHHHhh-----HHHHHHHHHHHHHHHHHHHhhHHHHHHHc
Confidence            4899999999999999998 222211    3489999998876543     47899999999999999999999999999


Q ss_pred             cccccHHHHHHHHHHHHHHHHHHHHHHH
Q psy9433          76 GRALTIKKVYTTGYAMLGAAILTNLVLT  103 (105)
Q Consensus        76 g~g~~~~~~~~~~~~v~~~s~v~t~~~~  103 (105)
                      |+++|+|+.+++++++++++++++++.+
T Consensus        89 g~~~~~~~~~~~~~~~~~~~~~~~~~~~  116 (117)
T cd03499          89 GKGLELKTVYKSGYAVLVLSVVLTVLLG  116 (117)
T ss_pred             cccCcHHHHHHHHHHHHHHHHHHHHHHH
Confidence            9999999999999999999999998875

SQR catalyzes the oxidation of succinate to fumarate coupled to the reduction of quinone to quinol. Members of this family reduce high potential quinones such as ubiquinone. SQR is also called succinate dehydrogenase or Complex II, and is part of the citric acid cycle and the aerobic respiratory chain. SQR is composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. Proteins in this subfamily are classified as Type C SQRs because they contain two transmembrane subunits and one heme group. The heme and quinone binding sites reside in the transmembrane subunits. The SdhC or CybL protein is one of the two transmembrane subunits of bacterial and eukaryotic SQRs. The two-electron oxidation of succinate in the flavoprotein a

>TIGR02970 succ_dehyd_cytB succinate dehydrogenase, cytochrome b556 subunit

Probab=99.96  E-value=6.1e-28  Score=161.36  Aligned_cols=99  Identities=28%  Similarity=0.433  Sum_probs=86.2

Q ss_pred             ChHHHHHHHHHHHHHHHHH-H---HHHHh-hcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHh
Q psy9433           1 ITSVLSITHRGTGVALTAY-A---LGLAG-VGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDT   75 (105)
Q Consensus         1 it~~~SI~HRiTGv~L~~~-~---~~l~~-l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~   75 (105)
                      +||++||+|||||++++++ .   +.+.. ..+|++|+.+.+..++     ++.+.+++++.++++||.+||+||++||.
T Consensus        16 ~~~~~silhRiTGv~l~~~~~~~~~~l~~~~~~~~~~~~~~~~~~~-----~~~~~~~~~~~~~~~yH~~nGiRhl~~D~   90 (120)
T TIGR02970        16 ITAILSILHRITGVLLFFGLPFLLWWLSLSLSSPESFATVHALLSS-----PLGKLILWGLLWALLYHLLAGIRHLLWDL   90 (120)
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhcCHHHHHHHHHHHhC-----HHHHHHHHHHHHHHHHHHHHhHHHHHHHc
Confidence            4799999999999999998 2   22222 4688999998876554     37789999999999999999999999999


Q ss_pred             cccccHHHHHHHHHHHHHHHHHHHHHHHh
Q psy9433          76 GRALTIKKVYTTGYAMLGAAILTNLVLTL  104 (105)
Q Consensus        76 g~g~~~~~~~~~~~~v~~~s~v~t~~~~~  104 (105)
                      |+|+|+|+.+++++++++++++++++.+.
T Consensus        91 g~g~~~~~~~~~~~~~~~l~~~~~~~~~~  119 (120)
T TIGR02970        91 GYGLELKSARISAWVVLVLSLVLTILAGI  119 (120)
T ss_pred             cccCcHHHHHHHHHHHHHHHHHHHHHHHH
Confidence            99999999999999999999999998764

In E. coli and many other bacteria, two small, hydrophobic, mutually homologous subunits of succinate dehydrogenase, a TCA cycle enzyme, are SdhC and SdhD. This family is the SdhC, the cytochrome b subunit, called b556 in bacteria and b560 in mitochondria. SdhD (see TIGR02968) is called the hydrophobic membrane anchor subunit, although both SdhC and SdhD participate in anchoring the complex. In some bacteria, this cytochrome b subunit is replaced my a member of the cytochrome b558 family (see TIGR02046).

>KOG0449|consensus

Probab=99.95  E-value=5.6e-28  Score=167.72  Aligned_cols=105  Identities=46%  Similarity=0.717  Sum_probs=94.8

Q ss_pred             ChHHHHHHHHHHHHHHHHH--HHHHHhhcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhccc
Q psy9433           1 ITSVLSITHRGTGVALTAY--ALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRA   78 (105)
Q Consensus         1 it~~~SI~HRiTGv~L~~~--~~~l~~l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g   78 (105)
                      +||.+|++|||||++|+++  +++...+.++.+.+...+.+++..+|++..-.+|+..++++.||..|||||++||.||+
T Consensus        62 Lt~~LS~~hRiSG~~la~gv~~~G~~~l~~~g~~~~~v~~~~~~~~~~~~~~~~K~~iayp~a~Ht~ngiRHLiwd~~k~  141 (168)
T KOG0449|consen   62 LTWMLSIFHRISGVVLAGGVWLVGVSGLLGMGDITATVSKVYQLKLPTAVQWPAKFSIAYPFAYHTGNGIRHLIWDLGKE  141 (168)
T ss_pred             HHHHHHHHHhhhhheehhhHHHHHHHHHhcCcchHHHHHHHHHhccchhHHhhHHHHHHHHHHHHHhcchhhhhhhhccc
Confidence            4899999999999999998  56666677777888888888888789888888899999999999999999999999999


Q ss_pred             ccHHHHHHHHHHHHHHHHHHHHHHHhC
Q psy9433          79 LTIKKVYTTGYAMLGAAILTNLVLTLL  105 (105)
Q Consensus        79 ~~~~~~~~~~~~v~~~s~v~t~~~~~~  105 (105)
                      +++|++|++||++++++++++..++++
T Consensus       142 L~i~~vY~tGy~v~alt~vls~~l~~~  168 (168)
T KOG0449|consen  142 LTIKGVYKTGYAVLALTVVLSAYLAAL  168 (168)
T ss_pred             ccccceeeechhHHHHHHHHHHHHhhC
Confidence            999999999999999999999988764

>COG2009 SdhC Succinate dehydrogenase/fumarate reductase, cytochrome b subunit [Energy production and conversion]

Probab=99.85  E-value=2.2e-20  Score=126.81  Aligned_cols=101  Identities=37%  Similarity=0.468  Sum_probs=76.1

Q ss_pred             ChHHHHHHHHHHHHHHHHH----HHHHH-hhcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHh
Q psy9433           1 ITSVLSITHRGTGVALTAY----ALGLA-GVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDT   75 (105)
Q Consensus         1 it~~~SI~HRiTGv~L~~~----~~~l~-~l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~   75 (105)
                      +++.+|++||+||+++.++    .+... ++.+++.++...+.+++. .++++.++.++++++++.||.+|||||++||.
T Consensus        16 ~~~~~silHRitGv~l~~Fl~~hil~~~~~l~~~~~~~~~~~~~~~~-~~~~~~~~~~~~~~~~~~~H~~nGIR~l~~d~   94 (132)
T COG2009          16 ITMYASILHRISGVILAFFLFVHILLASSWLAGSASFNAAFEFYHAL-LGSFIVKLVLLGLVLALLYHGLNGIRHLLWDF   94 (132)
T ss_pred             hHHHHHHHHHhHHHHHHHHHHHHHHHHHHHHHHhhhhHHHHHHHHhc-cccHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
Confidence            4789999999999999632    11111 334555555555544432 25668899999999999999999999999999


Q ss_pred             cccccHHHHHHHHHHHHHHHHHH-HHHH
Q psy9433          76 GRALTIKKVYTTGYAMLGAAILT-NLVL  102 (105)
Q Consensus        76 g~g~~~~~~~~~~~~v~~~s~v~-t~~~  102 (105)
                      |++++.++.+++++..+..+.+. ++..
T Consensus        95 g~~~~~~~~~~~~~~~~~~~~v~~~~l~  122 (132)
T COG2009          95 GYGLELKGVGYTGAALVFFSAVTLTLLL  122 (132)
T ss_pred             HhhhcchhhhhhHHHHHHHHHHHHHHHH
Confidence            99999888888888888877766 4443

>cd03501 SQR_TypeA_SdhC_like Succinate:quinone oxidoreductase (SQR) Type A subfamily, Succinate dehydrogenase C (SdhC)-like subunit; SQR catalyzes the oxidation of succinate to fumarate coupled to the reduction of quinone to quinol

Probab=99.79  E-value=5.3e-18  Score=109.66  Aligned_cols=95  Identities=25%  Similarity=0.259  Sum_probs=77.8

Q ss_pred             HHHHHHHHHHHHHHHHH-HHH---HHh-hcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhcc
Q psy9433           3 SVLSITHRGTGVALTAY-ALG---LAG-VGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGR   77 (105)
Q Consensus         3 ~~~SI~HRiTGv~L~~~-~~~---l~~-l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~   77 (105)
                      +++.++||+||+++.++ ++-   ... ..+|++|+.+.+.++++     +.+.++.+...++.||..||+||++||.|+
T Consensus         1 ~~~~~lhRitGi~L~~fl~~hl~~~~~~~~~~~~y~~~~~~~~~p-----~~~~~~~l~~~~~~~H~~~Gir~~~~d~g~   75 (101)
T cd03501           1 MWAWVLHRITGVVILFYLFLHVLDLSSLRRGPETYNAVIATYKSP-----IFKLGEFGLVAAVVFHALNGIRLILVDFGS   75 (101)
T ss_pred             CHHHHHHHHHHHHHHHHHHHHHHHHHHHhcCHHHHHHHHHHHHCh-----HHHHHHHHHHHHHHHHHHHhHHHHHHHhcc
Confidence            46889999999999988 322   222 35789999988776653     678899999999999999999999999999


Q ss_pred             cccHHHHHHHHHHHHHHHHHHHHHHH
Q psy9433          78 ALTIKKVYTTGYAMLGAAILTNLVLT  103 (105)
Q Consensus        78 g~~~~~~~~~~~~v~~~s~v~t~~~~  103 (105)
                      +.++ ..++..+.+.+.+++++++..
T Consensus        76 ~~~~-~~~~~~~~~~~~~vv~~~~~~  100 (101)
T cd03501          76 GGPR-YQRQLFYIVLVLTVVLIVAAG  100 (101)
T ss_pred             cchH-HHHHHHHHHHHHHHHHHHHhc
Confidence            8765 568888999999998887643

Members of this subfamily reduce low potential quinones such as menaquinone and thermoplasmaquinone. SQR is also called succinate dehydrogenase or Complex II, and is part of the citric acid cycle and the aerobic respiratory chain. SQR is composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. Members of this subfamily are similar to the Thermoplasma acidophilum SQR and are classified as Type A because they contain two transmembrane subunits as well as two heme groups. Although there are no structures available for this subfamily, the presence of two hemes has been proven spectroscopically for T. acidophilum. The two membrane anchor subunits are similar to the SdhD and SdhC subunits of bacteria

>cd03493 SQR_QFR_TM Succinate:quinone oxidoreductase (SQR) and Quinol:fumarate reductase (QFR) family, transmembrane subunits; SQR catalyzes the oxidation of succinate to fumarate coupled to the reduction of quinone to quinol, while QFR catalyzes the reverse reaction

Probab=99.78  E-value=4.5e-18  Score=107.25  Aligned_cols=92  Identities=39%  Similarity=0.634  Sum_probs=74.6

Q ss_pred             HHHHHHHHHHHHH-HHHH---Hh-hcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhcccccH
Q psy9433           7 ITHRGTGVALTAY-ALGL---AG-VGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALTI   81 (105)
Q Consensus         7 I~HRiTGv~L~~~-~~~l---~~-l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g~~~   81 (105)
                      ++||+||+++.++ .+-+   .. ..++++++.+.+..++     +..+.++....+++.||..||+||++||++++.++
T Consensus         1 ~~~Ritgv~l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~-----~~~~~~~~~~~~~~~~H~~~Gir~i~~D~~~~~~~   75 (98)
T cd03493           1 ILHRITGVALLLFLPLHLLGLLALLGGPYAFAEVVAFLSS-----PLGKLLYLLLLLALLYHALNGIRHLIWDYGKGLEL   75 (98)
T ss_pred             CeehhhHHHHHHHHHHHHHHHHHHhcCHHHHHHHHHHHhC-----HHHHHHHHHHHHHHHHHHHHhHHHHHHHccccCCH
Confidence            4799999999998 3222   22 2456666566655544     47789999999999999999999999999999999


Q ss_pred             HHHHHHHHHHHHHHHHHHHHHH
Q psy9433          82 KKVYTTGYAMLGAAILTNLVLT  103 (105)
Q Consensus        82 ~~~~~~~~~v~~~s~v~t~~~~  103 (105)
                      ++.+++++.+.+.+.+.++...
T Consensus        76 ~~~~~~~~~~~~~~~~~~~~~~   97 (98)
T cd03493          76 KLRKALGYAVLALSVLLTVLLL   97 (98)
T ss_pred             HHHHHHHHHHHHHHHHHHHHHH
Confidence            9999999999999998887654

SQR, also called succinate dehydrogenase or Complex II, is part of the citric acid cycle and the aerobic respiratory chain, while QFR is involved in anaerobic respiration with fumarate as the terminal electron acceptor. SQRs may reduce either high or low potential quinones while QFRs oxidize only low potential quinols. SQR and QFR share a common subunit arrangement, composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. The structural arrangement allows efficient electron transfer between the catalytic subunit, through iron-sulfur centers, and the transmembrane subunit(s) containing the electron donor/acceptor (quinol or quinone). The reversible reduction of

>PF01127 Sdh_cyt: Succinate dehydrogenase/Fumarate reductase transmembrane subunit; InterPro: IPR000701 This entry includes the transmembrane subunit from both succinate dehydrogenase and fumarate reductase complexes

Probab=99.74  E-value=1.5e-16  Score=104.91  Aligned_cols=95  Identities=27%  Similarity=0.373  Sum_probs=76.2

Q ss_pred             hHHHHHHHHHHHHHHHH-H-HHH---HHh--hcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
Q psy9433           2 TSVLSITHRGTGVALTA-Y-ALG---LAG--VGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWD   74 (105)
Q Consensus         2 t~~~SI~HRiTGv~L~~-~-~~~---l~~--l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD   74 (105)
                      .+..|++||+||++|.+ . .+.   +..  ..+|++|+.+.+.++++     +..+..+++.++++||..||+||+++|
T Consensus        19 ~~~~~~~qRiTgi~L~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~-----~~~~~~~~~~~~~~~H~~~Gir~il~D   93 (121)
T PF01127_consen   19 GTWAWILQRITGIILLLLFLHLHIWFLLSALGGGPISYDEVVAFFSSP-----FWAILYFLLLVAFFFHALNGIRHILED   93 (121)
T ss_dssp             HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCSSHHHHHHHHHHHHSH-----HHHHHHHHHHHHHHHHHHHHHHHHHHH
T ss_pred             chHHHHHHHHHHHHHHHHHHHHHHHHHhhhhcCCHhhHHHHHHHhCCH-----HHHHHHHHHHHHHHHHHHhhHHHHHHH
Confidence            46789999999999998 4 222   112  35788999998776653     566777999999999999999999999


Q ss_pred             hcccccHHHHHHHHHHHHHHHHHHHHH
Q psy9433          75 TGRALTIKKVYTTGYAMLGAAILTNLV  101 (105)
Q Consensus        75 ~g~g~~~~~~~~~~~~v~~~s~v~t~~  101 (105)
                      .|.+.++++.++.++.+++.+++++++
T Consensus        94 ~g~~~~~~~~~~~~~~~~~~~~~~~~~  120 (121)
T PF01127_consen   94 WGIGLSPKNRRRSGLLILAISVILVIV  120 (121)
T ss_dssp             TTTS-SHHHHHHHHHHHHHHHHHHHHH
T ss_pred             hcccccchHHHHHHHHHHHHHHHHHHH
Confidence            999888888889999888888877765

Fumarate reductase couples the reduction of fumarate to succinate to the oxidation of quinol to quinone, in a reaction opposite to that catalysed by the related complex II of the respiratory chain (succinate dehydrogenase) []. Three protein subunits contain the fumarate reductase complex. Subunit A contains the site of fumarate reduction and a covalently bound flavin adenine dinucleotide prosthetic group. Subunit B contains three iron-sulphur centres. The menaquinol-oxidizing subunit C consists of five membrane-spanning, primarily helical segments and binds two haem b molecules []. Succinate dehydrogenase (SDH) is a membrane-bound complex of two main components: a membrane-extrinsic component composed of an FAD-binding flavoprotein and an iron-sulphur protein, and a hydrophobic component composed of a cytochrome b and a membrane anchor protein. The cytochrome b component is a mono-haem transmembrane protein [, , ] belonging to a family that includes: Cytochrome b-556 from bacterial SDH (gene sdhC). Cytochrome b560 from the mammalian mitochondrial SDH complex, which is encoded in the mitochondrial genome of some algae and in the plant Marchantia polymorpha. Cytochrome b from yeast mitochondrial SDH complex (gene SDH3 or CYB3). Protein cyt-1 from Caenorhabditis elegans. These cytochromes are proteins of about 130 residues that comprise three transmembrane regions. There are two conserved histidines which may be involved in binding the haem group.; GO: 0016627 oxidoreductase activity, acting on the CH-CH group of donors; PDB: 2WDQ_H 1NEN_D 2WP9_L 2WDV_H 2ACZ_D 2WS3_L 2WU2_H 2WDR_D 2WU5_H 1NEK_D ....

>TIGR02968 succ_dehyd_anc succinate dehydrogenase, hydrophobic membrane anchor protein

Probab=99.72  E-value=3.9e-16  Score=101.96  Aligned_cols=86  Identities=14%  Similarity=0.074  Sum_probs=66.6

Q ss_pred             HHHHHHHHHHHHHHH-HHHHHh-h-cChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhcccccH
Q psy9433           5 LSITHRGTGVALTAY-ALGLAG-V-GLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALTI   81 (105)
Q Consensus         5 ~SI~HRiTGv~L~~~-~~~l~~-l-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g~~~   81 (105)
                      ..+.||+||++|... ++.+.. . .++++|+.+.+.++++     +.+...+.++++..||+.||+||++||++++.+.
T Consensus         7 ~w~~~RiSgv~L~~l~~~~~~~~~~~~~~~y~~~~~~~~~~-----~~~i~~~l~~~~~~~H~~~Glr~ii~Dy~~~~~~   81 (105)
T TIGR02968         7 DWLLQRVTAVVLALYTIFLIGFLLALPGLTYEAWRALFAHP-----WMKIFTLLALLALLYHAWIGMRVVLEDYVKPEGL   81 (105)
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHcCCCCHHHHHHHHhCh-----HHHHHHHHHHHHHHHHHHHhHHHHHHHHccchHH
Confidence            568999999999887 444433 2 4556899998776654     6788999999999999999999999999999887


Q ss_pred             HHHHHHHHHHHHHH
Q psy9433          82 KKVYTTGYAMLGAA   95 (105)
Q Consensus        82 ~~~~~~~~~v~~~s   95 (105)
                      +..-......+...
T Consensus        82 r~~l~~~~~~~~~~   95 (105)
T TIGR02968        82 RLVLQVLIILFLVA   95 (105)
T ss_pred             HHHHHHHHHHHHHH
Confidence            76555544443333

In E. coli and many other bacteria, two small, hydrophobic, mutually homologous subunits of succinate dehydrogenase, a TCA cycle enzyme, are SdhC and SdhD. This family is the SdhD, the hydrophobic membrane anchor protein. SdhC is apocytochrome b558, which also plays a role in anchoring the complex.

>cd03500 SQR_TypeA_SdhD_like Succinate:quinone oxidoreductase (SQR) Type A subfamily, Succinate dehydrogenase D (SdhD)-like subunit; SQR catalyzes the oxidation of succinate to fumarate coupled to the reduction of quinone to quinol

Probab=99.55  E-value=3.2e-13  Score=88.06  Aligned_cols=75  Identities=23%  Similarity=0.201  Sum_probs=60.4

Q ss_pred             HHHHHHHHHHHHHHHHH-HHHHH---h-h-cChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhc
Q psy9433           3 SVLSITHRGTGVALTAY-ALGLA---G-V-GLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTG   76 (105)
Q Consensus         3 ~~~SI~HRiTGv~L~~~-~~~l~---~-l-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g   76 (105)
                      +...++||+||++|.++ ++-+.   . . ..|++|+...+.++++     ..+.+...+..+..||..||+|+++.|++
T Consensus         2 ~~~w~~qRiTgv~L~~~l~~hi~~~~~~~~~~~~~~~~~~~~~~~p-----~~~i~~~lll~~~~~H~~~Glr~il~Dy~   76 (106)
T cd03500           2 SLAWLFQRITGVFLVFLLAGHFWVQHMDNGGDVIDFAFVANRLASP-----LWKVWDLLLLVLALLHGGNGLRNILLDYV   76 (106)
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHHHhccCCccCHHHHHHHHcCh-----HHHHHHHHHHHHHHHHHHHhHHHHHHHHc
Confidence            56789999999999998 43333   2 2 3678999998876653     56788899999999999999999999999


Q ss_pred             ccccHH
Q psy9433          77 RALTIK   82 (105)
Q Consensus        77 ~g~~~~   82 (105)
                      ++.+.+
T Consensus        77 ~~~~~r   82 (106)
T cd03500          77 RRPRLR   82 (106)
T ss_pred             cCchHH
Confidence            875533

Members of this subfamily reduce low potential quinones such as menaquinone and thermoplasmaquinone. SQR is also called succinate dehydrogenase or Complex II, and is part of the citric acid cycle and the aerobic respiratory chain. SQR is composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. Members of this subfamily are similar to the Thermoplasma acidophilum SQR and are classified as Type A because they contain two transmembrane subunits as well as two heme groups. Although there are no structures available for this subfamily, the presence of two hemes has been proven spectroscopically for T. acidophilum. The two membrane anchor subunits are similar to the SdhD and SdhC subunits of bacterial

>PLN00130 succinate dehydrogenase (SDH3); Provisional

Probab=99.43  E-value=6.3e-13  Score=94.20  Aligned_cols=69  Identities=26%  Similarity=0.200  Sum_probs=49.3

Q ss_pred             ChHHHHHHHHHHHHHHHHH--HHHHHhh---cChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHH
Q psy9433           1 ITSVLSITHRGTGVALTAY--ALGLAGV---GLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLI   72 (105)
Q Consensus         1 it~~~SI~HRiTGv~L~~~--~~~l~~l---~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~   72 (105)
                      +||++||+|||||++|+.+  .+++..+   ..+.+|+.+.+++.-.  +. +..++.-....+++||++||+|||.
T Consensus       138 LTs~lSI~HRITGvaLsg~ly~f~la~lK~G~i~~t~~~FyQf~fys--sk-l~~~~~~itaLA~~YHl~~gvrhLl  211 (213)
T PLN00130        138 MNSMLSIFNRISGVYLTGVTFAGYLLYLKMGMICLTYPSFYQVLYHT--QQ-QLPVITSVTALAAIYHTIKSTHSLL  211 (213)
T ss_pred             chhhhhHHHHHHHHHHHHHHHHHHHHHHHhccccccchhHHHHHHHH--HH-HHHHHHHHHHHHHHHHHHHhHHHHh
Confidence            5899999999999999998  4455554   3345666666543211  22 3344555678999999999999996

>cd03494 SQR_TypeC_SdhD Succinate:quinone oxidoreductase (SQR) Type C subfamily, Succinate dehydrogenase D (SdhD) subunit; SQR catalyzes the oxidation of succinate to fumarate coupled to the reduction of quinone to quinol

Probab=99.42  E-value=8e-12  Score=81.13  Aligned_cols=71  Identities=11%  Similarity=0.149  Sum_probs=58.3

Q ss_pred             HHHHHHHHHHHHH-HHHHHh--hcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhcccccHH
Q psy9433           7 ITHRGTGVALTAY-ALGLAG--VGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALTIK   82 (105)
Q Consensus         7 I~HRiTGv~L~~~-~~~l~~--l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g~~~~   82 (105)
                      ..||+||+++..+ ++.+..  ..++++|+.+.+.+.++     +.+........+..||+..|+||++.|+-++...|
T Consensus         3 ~~qRiSav~L~~l~~~~v~~~~~~~~~~y~~~~~~~~~p-----~~~i~~~l~~~~~~~H~~~Glr~vi~DYv~~~~lr   76 (99)
T cd03494           3 LVQRVTAVIMALYTIFLVGFLLASPPLTYEAWSGLFSSL-----WMKIFTLLALLALLLHAWIGLWDILTDYVKPAGLR   76 (99)
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHcCCCCHHHHHHHHhCH-----HHHHHHHHHHHHHHHHHHHHHHHHHHHHcCcHHHH
Confidence            6899999999998 444433  35778999999876654     77899999999999999999999999997765443

E. coli SQR, a member of this subfamily, reduces the high potential quinine, ubiquinone. SQR is also called succinate dehydrogenase or Complex II, and is part of the citric acid cycle and the aerobic respiratory chain. SQR is composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. Members of this subfamily are classified as Type C SQRs because they contain two transmembrane subunits and one heme group. SdhD and SdhC are the two transmembrane proteins of bacterial SQRs. They contain heme and quinone binding sites. The two-electron oxidation of succinate in the flavoprotein active site is coupled to the two-electron reduction of quinone in the membrane anchor subunits via electron transport through FAD an

>COG2142 SdhD Succinate dehydrogenase, hydrophobic anchor subunit [Energy production and conversion]

Probab=99.18  E-value=1e-09  Score=73.29  Aligned_cols=77  Identities=21%  Similarity=0.187  Sum_probs=60.7

Q ss_pred             HHHHHHHHHHHHHH-HHHHHhh--cChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhcccccHH
Q psy9433           6 SITHRGTGVALTAY-ALGLAGV--GLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALTIK   82 (105)
Q Consensus         6 SI~HRiTGv~L~~~-~~~l~~l--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g~~~~   82 (105)
                      .+++|+||++|.++ .+.++..  ..+.+|+.+.+.+.+     |+.+.+..+.+++..||..||+|+.+-|+-++...+
T Consensus        17 ~l~qRvTav~Lv~l~~~~l~~~l~~~~~~y~~~~~~~s~-----p~~~v~~lL~l~~~l~H~~~Glr~Ii~DYi~~~~~r   91 (117)
T COG2142          17 WLLQRVTAVILVLLVIWHLYFLLTWLNATYAAWVAFLAN-----PFWKVFLLLLLVAALIHAWNGLRVIIEDYIKPEKLR   91 (117)
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHcCCCCHHHHHHHHhC-----HHHHHHHHHHHHHHHHHHHhhhHHHHHHHHhhHHHH
Confidence            57899999999999 5555542  346678888766555     478899999999999999999999999998887665


Q ss_pred             HHHHH
Q psy9433          83 KVYTT   87 (105)
Q Consensus        83 ~~~~~   87 (105)
                      ..-+.
T Consensus        92 ~~l~~   96 (117)
T COG2142          92 LALQI   96 (117)
T ss_pred             HHHHH
Confidence            44333

>cd03495 SQR_TypeC_SdhD_like Succinate:quinone oxidoreductase (SQR) Type C subfamily, Succinate dehydrogenase D (SdhD) subunit-like; composed of predominantly uncharacterized bacterial proteins with similarity to the E

Probab=99.10  E-value=7.9e-09  Score=67.14  Aligned_cols=76  Identities=18%  Similarity=0.115  Sum_probs=60.2

Q ss_pred             HHHHHHHHHHHHHH-HHHHHhh--cChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhcccccHH
Q psy9433           6 SITHRGTGVALTAY-ALGLAGV--GLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALTIK   82 (105)
Q Consensus         6 SI~HRiTGv~L~~~-~~~l~~l--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g~~~~   82 (105)
                      .+.+|+||++|... ++.+...  ..+.+|+.+.+.++++     +.+........+..+|+.+|+|..+-|+-++...+
T Consensus         3 W~~qRvTav~L~~l~~~~v~~~~~~~~~~y~~~~~~~~~p-----~~~i~~~l~l~~~~~H~~~Gm~~IieDYV~~~~~R   77 (100)
T cd03495           3 WWAQRVTAVALVPLVLWFVFSVALLLGASYAEVVAWLAHP-----FNAILLILTLVSAFYHARLGMQVVIEDYVHSEGLR   77 (100)
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHhCCCCHHHHHHHHhCh-----HHHHHHHHHHHHHHHHHHHHHHHHHHHHhCchHHH
Confidence            36799999999998 4444432  4567899999887765     66888899999999999999999999998876655


Q ss_pred             HHHH
Q psy9433          83 KVYT   86 (105)
Q Consensus        83 ~~~~   86 (105)
                      ..-.
T Consensus        78 ~~l~   81 (100)
T cd03495          78 LALI   81 (100)
T ss_pred             HHHH
Confidence            4333

coli SdhD subunit. One characterized protein is the respiratory Complex II SdhD subunit of the only eukaryotic member, Reclinomonas americana. SQR catalyzes the oxidation of succinate to fumarate coupled to the reduction of quinone to quinol. It is also called succinate dehydrogenase or Complex II, and is part of the citric acid cycle and the aerobic respiratory chain. SQR is composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. E. coli SQR is classified as Type C SQRs because it contains two transmembrane subunits and one heme group. The SdhD and SdhC subunits are membrane anchor subunits containing heme and quinone binding sites. The two-electron oxidation of succinate in the flavoprotein active site is

>cd03497 SQR_TypeB_1_TM Succinate:quinone oxidoreductase (SQR) Type B subfamily 1, transmembrane subunit; composed of proteins similar to Bacillus subtilis SQR

Probab=98.73  E-value=6.2e-07  Score=65.00  Aligned_cols=93  Identities=16%  Similarity=0.240  Sum_probs=64.2

Q ss_pred             HHHHHHHHHHHHHHHHH-H---HHHHhh-c-----------ChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHH
Q psy9433           3 SVLSITHRGTGVALTAY-A---LGLAGV-G-----------LTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTAN   66 (105)
Q Consensus         3 ~~~SI~HRiTGv~L~~~-~---~~l~~l-~-----------~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~n   66 (105)
                      ..+|-.||+||+++.++ .   +-.... .           +++.|+...+.+++     +....+......++.||..|
T Consensus        90 ~~a~~~mritG~ill~Fli~Hl~~~~~~~~~~~~~~~~~~~~~~~y~~v~~~f~~-----~~~~~~Yvv~~~al~~Hl~h  164 (207)
T cd03497          90 NWMYTLQRITGIILLVFIAWHVWHTRFAEALGHVDIQTPEAGEANLSAMRNALAS-----PLMLIFYIIGVLAAVFHFAN  164 (207)
T ss_pred             hHHHHHHHHHHHHHHHHHHHHHHHHHHHHhccccccccCcccchHHHHHHHHHhc-----HHHHHHHHHHHHHHHHHHHH
Confidence            46899999999999988 2   222221 1           12456666665544     35667888999999999999


Q ss_pred             HHHHHHHHhcccccHHHHHHHHHHHHHHHHHHHH
Q psy9433          67 GIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNL  100 (105)
Q Consensus        67 GiRHl~wD~g~g~~~~~~~~~~~~v~~~s~v~t~  100 (105)
                      |+|-...|.|...+++..++..+...++++++..
T Consensus       165 Gl~s~~~t~G~~~~~r~~~~~~~~~~~~~~vl~~  198 (207)
T cd03497         165 GLWTFLITWGITVSPRSQRVSTYVCLLVFVVVSF  198 (207)
T ss_pred             HHHHHHHHcCcccChhHHHHHHHHHHHHHHHHHH
Confidence            9999999999755555545555555555554443

SQR catalyzes the oxidation of succinate to fumarate coupled to the reduction of quinone to quinol. Bacillus subtilis SQR reduces low potential quinones such as menaquinone. SQR is also called succinate dehydrogenase (Sdh) or Complex II and is part of the citric acid cycle and the aerobic respiratory chain. SQR is composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. Members of this subfamily are classified as Type B as they contain one transmembrane subunit and two heme groups. The heme and quinone binding sites reside on the transmembrane subunit. The transmembrane subunit of Bacillus subtilis SQR is also called Sdh cytochrome b558 subunit. The structural arrangement allows efficient electron transfer between the catalytic subunit, through iron-sulfur centers,

>PRK09488 sdhD succinate dehydrogenase cytochrome b556 small membrane subunit; Provisional

Probab=98.67  E-value=8e-07  Score=59.19  Aligned_cols=72  Identities=17%  Similarity=0.173  Sum_probs=57.8

Q ss_pred             HHHHHHHHHHHHHH-HHHHHh-h-cChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhcccccHH
Q psy9433           6 SITHRGTGVALTAY-ALGLAG-V-GLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALTIK   82 (105)
Q Consensus         6 SI~HRiTGv~L~~~-~~~l~~-l-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g~~~~   82 (105)
                      .+.+|+|++++..+ ++.+.. . ..+.||+.+.+.+.++     +.+.+......+.+||+..|+|..+-|+-++...+
T Consensus        16 w~~QRvTAv~l~~l~~~~v~~~~~~~g~~y~~~~~~f~~p-----~~ai~~ll~l~~~~~H~~iGmq~VieDYV~~~~lR   90 (115)
T PRK09488         16 FILVRATAIVLTLYIIYMVGFFATSGELTYEVWRGFFASA-----FTKVFTLLALFSILIHAWIGMWQVLTDYVKPLALR   90 (115)
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHcCCCCHHHHHHHHcCh-----HHHHHHHHHHHHHHHHHHHcchHHHHHccCchHHH
Confidence            46799999999998 444444 2 3456899999886654     66888899999999999999999999998865443

>cd03498 SQR_TypeB_2_TM Succinate:quinone oxidoreductase (SQR)-like Type B subfamily 2, transmembrane subunit; composed of proteins with similarity to the SQRs of Geobacter metallireducens and Corynebacterium glutamicum

Probab=98.14  E-value=8.4e-05  Score=53.83  Aligned_cols=92  Identities=16%  Similarity=0.036  Sum_probs=60.0

Q ss_pred             HHHHHHHHHHHHHHHHH-HHHHHh---h-cC----------hhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHH
Q psy9433           3 SVLSITHRGTGVALTAY-ALGLAG---V-GL----------TTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANG   67 (105)
Q Consensus         3 ~~~SI~HRiTGv~L~~~-~~~l~~---l-~~----------~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nG   67 (105)
                      .+.|-.+|+||+++.++ .+=+..   . ..          ++.|+...+.+++     |+...+-.....++.+|..+|
T Consensus        90 t~~~~~m~itG~vll~Fiv~Hl~~~~~~~~~~~~~~~~~~~~~~y~~v~~~f~~-----p~~~~~Yvv~~~al~~Hl~hG  164 (209)
T cd03498          90 SLASRTMIWSGLIILLFIILHLLDFTFGVVGPVSPPMGVGRGDVYELLVASFQQ-----PWIAALYVLAMVALGLHLSHG  164 (209)
T ss_pred             cHHHHHHHHHHHHHHHHHHHHHHHhhcccccccccccccccchHHHHHHHHhcc-----HHHHHHHHHHHHHHHHHHHHH
Confidence            47899999999998887 322222   1 11          2455555554443     355567788899999999999


Q ss_pred             HHHHHHHhcccccHHHHHHHHHHHHHHHHHHHH
Q psy9433          68 IRHLIWDTGRALTIKKVYTTGYAMLGAAILTNL  100 (105)
Q Consensus        68 iRHl~wD~g~g~~~~~~~~~~~~v~~~s~v~t~  100 (105)
                      ++-...+.|.. +++..++..+...+.++++.+
T Consensus       165 l~s~~~t~G~~-~~~~~~~~~~~~~~~~~~i~~  196 (209)
T cd03498         165 FWSAFQTLGLN-NPRYRPALKAVGRVVAILIAG  196 (209)
T ss_pred             HHHHHHHCCCC-CchHHHHHHHHHHHHHHHHHH
Confidence            99999999975 333333444444444444443

SQR catalyzes the oxidation of succinate to fumarate coupled to the reduction of quinone to quinol. C. glutamicum SQR reduces low potential quinones such as menaquinone. SQR is also called succinate dehydrogenase (Sdh) or Complex II and is part of the citric acid cycle and the aerobic respiratory chain. SQR is composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. Members of this subfamily are classified as Type B as they contain one transmembrane subunit and two heme groups. The heme and quinone binding sites reside in the transmembrane subunit. The transmembrane subunit of members of this subfamily is also called Sdh cytochrome b558 subunit based on the Bacillus subtilis protein. The structural arrangem

>cd03526 SQR_QFR_TypeB_TM Succinate:quinone oxidoreductase (SQR) and Quinol:fumarate reductase (QFR) Type B subfamily, transmembrane subunit; SQR catalyzes the oxidation of succinate to fumarate coupled to the reduction of quinone to quinol, while QFR catalyzes the reverse reaction

Probab=97.64  E-value=0.0043  Score=44.79  Aligned_cols=71  Identities=17%  Similarity=0.126  Sum_probs=53.1

Q ss_pred             HHHHHHHHHHHHHHHHH-HHHHHhh-c-----ChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHh
Q psy9433           3 SVLSITHRGTGVALTAY-ALGLAGV-G-----LTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDT   75 (105)
Q Consensus         3 ~~~SI~HRiTGv~L~~~-~~~l~~l-~-----~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~   75 (105)
                      ...|-.+|+||+++.++ .+=+... .     .++.|+...+.++++     +...+-.....++.+|..+|+.-...+.
T Consensus        89 t~~~~~m~~tG~ill~Fi~~Hl~~~~~~~~~~~~~~y~~~~~~f~~~-----~~~~~Yvv~~~~l~~Hl~hG~~s~~~t~  163 (199)
T cd03526          89 TTLWWIQAMTGFAMLFFGSVHLYIMMTQAQPDRTIGFVMSSNRMSSE-----WMWPLYIVLLFAVELHGSVGLYSFAVTW  163 (199)
T ss_pred             hHHHHHHHHHHHHHHHHHHHHHHHHhhccccCCCCCHHHHHHHHhcc-----HHHHHHHHHHHHHHHHHHHHHHHHHHHH
Confidence            56889999999999887 3333221 1     246677777766653     4456778888999999999999999999


Q ss_pred             ccc
Q psy9433          76 GRA   78 (105)
Q Consensus        76 g~g   78 (105)
                      |..
T Consensus       164 G~~  166 (199)
T cd03526         164 GWF  166 (199)
T ss_pred             hcc
Confidence            864

SQR, also called succinate dehydrogenase or Complex II, is part of the citric acid cycle and the aerobic respiratory chain, while QFR is involved in anaerobic respiration with fumarate as the terminal electron acceptor. SQR and QFR share a common subunit arrangement, composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. Type B proteins contain one transmembrane subunit and two heme groups. The heme and quinone binding sites reside in the transmembrane subunits. The structural arrangement allows efficient electron transfer between the catalytic subunit, through iron-sulfur centers, and the transmembrane subunit containing the electron donor/acc

>PLN00126 succinate dehydrogenase, cytochrome b subunit family; Provisional

Probab=97.57  E-value=5e-05  Score=50.60  Aligned_cols=20  Identities=40%  Similarity=0.509  Sum_probs=17.9

Q ss_pred             ChHHHHHHHHHHHHHHHHHH
Q psy9433           1 ITSVLSITHRGTGVALTAYA   20 (105)
Q Consensus         1 it~~~SI~HRiTGv~L~~~~   20 (105)
                      +||++||+|||||++|+.++
T Consensus        95 LT~~lSI~HRITGvaLs~~i  114 (129)
T PLN00126         95 LSATFSISHRIFGAALGAAI  114 (129)
T ss_pred             chhhhhHHHHHHHHHHHHHH
Confidence            58999999999999998754

>cd00581 QFR_TypeB_TM Quinol:fumarate reductase (QFR) Type B subfamily, transmembrane subunit; QFR couples the reduction of fumarate to succinate to the oxidation of quinol to quinone, the opposite reaction to that catalyzed by the related protein, succinate:quinone oxidoreductase (SQR)

Probab=97.38  E-value=0.012  Score=42.69  Aligned_cols=94  Identities=15%  Similarity=0.008  Sum_probs=62.7

Q ss_pred             HHHHHHHHHHHHHHHHH-HHHHHhh-cChh--hHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhcc-
Q psy9433           3 SVLSITHRGTGVALTAY-ALGLAGV-GLTT--DINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGR-   77 (105)
Q Consensus         3 ~~~SI~HRiTGv~L~~~-~~~l~~l-~~~~--~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~-   77 (105)
                      ..++-.+|+||+++.++ .+=+... ..|+  +.+...+.+.+.     ....+-.....++.+|..+|+.-...+.|. 
T Consensus        98 ~~~~~~q~~tG~ill~Fii~Hl~~~~~~~~~~~~~~~~~~~~~~-----~~~~~Yvv~~~al~~Hl~hG~~s~~qt~G~~  172 (206)
T cd00581          98 TSLWWIQAVTGFVLFFLASAHLYEMLTNPEIIGPHTSAYRVVHG-----GWWLLYLALLPAVELHGGIGLYRLAVKWGWF  172 (206)
T ss_pred             hHHHHHHHHHHHHHHHHHHHHHHHHHhCcccCCchHHHHHHhcc-----HHHHHHHHHHHHHHHHHHHHHHHHHHHHccC
Confidence            34567789999999887 3333222 1221  111112222221     334667778889999999999999999997 


Q ss_pred             -cccHHHHHHHHHHHHHHHHHHHHH
Q psy9433          78 -ALTIKKVYTTGYAMLGAAILTNLV  101 (105)
Q Consensus        78 -g~~~~~~~~~~~~v~~~s~v~t~~  101 (105)
                       .-.++..++.++++.++-+++++.
T Consensus       173 ~~~~~~~~r~~~~~~~~~~~~lg~~  197 (206)
T cd00581         173 ASESRKRLRRIKNVLSAFFLVLGLL  197 (206)
T ss_pred             CCccHHHHHHHHHHHHHHHHHHHHH
Confidence             566788888888887777766554

QFRs oxidize low potential quinols such as menaquinol and rhodoquinol and are involved in anaerobic respiration with fumarate as the terminal electron acceptor. SQR and QFR share a common subunit arrangement, composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. Members of this subfamily are classified as Type B as they contain one transmembrane subunit and two heme groups. The heme and quinone binding sites reside in the transmembrane subunit. The structural arrangement allows efficient electron transfer between the catalytic subunit, through iron-sulfur centers, and the transmembrane subunit containing the electron donor (quinol). The

>TIGR02046 sdhC_b558_fam succinate dehydrogenase (or fumarate reductase) cytochrome b subunit, b558 family

Probab=97.26  E-value=0.0096  Score=43.40  Aligned_cols=72  Identities=19%  Similarity=0.282  Sum_probs=50.2

Q ss_pred             HHHHHHHHHHHHHHHHH-HHHHHhh----cCh----------hhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHH
Q psy9433           3 SVLSITHRGTGVALTAY-ALGLAGV----GLT----------TDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANG   67 (105)
Q Consensus         3 ~~~SI~HRiTGv~L~~~-~~~l~~l----~~~----------~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nG   67 (105)
                      ++.|-.+|+||+++.++ .+=+...    ..|          +.|+...+.+++     |+...+-.....++.+|..+|
T Consensus        94 t~a~~~m~~tG~ill~Fiv~Hl~~f~~~~~~~~~~~~~~~~~d~y~~v~~~f~~-----p~~~~~Yvv~~~al~~Hl~hG  168 (214)
T TIGR02046        94 SWASRTMRVTGIIVLIFIGWHVLDFTIGAQMGEIFHMGVARHDGYDMVVLTFSS-----PIMLSIYIVAMLALGFHLSHG  168 (214)
T ss_pred             cHHHHHHHHHHHHHHHHHHHHHHHhhccccCcccccccccchhHHHHHHHHHcc-----HHHHHHHHHHHHHHHHHHHHH
Confidence            47899999999999887 3222221    111          115555554443     345567788889999999999


Q ss_pred             HHHHHHHhcccc
Q psy9433          68 IRHLIWDTGRAL   79 (105)
Q Consensus        68 iRHl~wD~g~g~   79 (105)
                      ++-...+.|..-
T Consensus       169 l~s~~~t~G~~~  180 (214)
T TIGR02046       169 LWSAAQTLGLNV  180 (214)
T ss_pred             HHHHHHhCCCCC
Confidence            999999998643

This family consists of the succinate dehydrogenase subunit C of Bacillus subtilis, designated cytochrome b-558, and related sequences that include a fumarate reductase subunit C. This subfamily is only weakly similar to the main group of succinate dehydrogenase cytochrome b subunits described by Pfam model pfam01127.

>cd00581 QFR_TypeB_TM Quinol:fumarate reductase (QFR) Type B subfamily, transmembrane subunit; QFR couples the reduction of fumarate to succinate to the oxidation of quinol to quinone, the opposite reaction to that catalyzed by the related protein, succinate:quinone oxidoreductase (SQR)

Probab=97.03  E-value=0.025  Score=41.05  Aligned_cols=63  Identities=14%  Similarity=0.045  Sum_probs=48.2

Q ss_pred             HHHHHHHHHHHHHH----HH-HHhhcChhhHHHHHHHHHhccc----hHHHHHHHHHHHHHHHHHHHHHHHH
Q psy9433           7 ITHRGTGVALTAYA----LG-LAGVGLTTDINSVVSFVDALNL----SAPILLAGKFILAFPVSYHTANGIR   69 (105)
Q Consensus         7 I~HRiTGv~L~~~~----~~-l~~l~~~~~~~~~~~~~~~~~~----~~~~~~~~~~~~~~a~~yH~~nGiR   69 (105)
                      .+|=+||+++.+++    .+ .....|||.||.+.+..++...    -++.......++..++..|.+.|+|
T Consensus         3 ~~~slTGliL~lFl~~Hm~gNl~i~~G~eafn~ya~~L~~~~~~~~~~~~~~~~~~~~l~~~~~~H~~~a~~   74 (206)
T cd00581           3 FLQSATGLFLALFMWAHMLFVSSILLGKEAMYWVARFFEGAFFFGHGYPWVVSVVAAIVFALFVAHAFLALR   74 (206)
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHhCHHHHHHHHHHHhhchhhccCccHHHHHHHHHHHHHHHHHHHHHHH
Confidence            36889999988872    22 2235799999999998887210    0356677889999999999999998

QFRs oxidize low potential quinols such as menaquinol and rhodoquinol and are involved in anaerobic respiration with fumarate as the terminal electron acceptor. SQR and QFR share a common subunit arrangement, composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. Members of this subfamily are classified as Type B as they contain one transmembrane subunit and two heme groups. The heme and quinone binding sites reside in the transmembrane subunit. The structural arrangement allows efficient electron transfer between the catalytic subunit, through iron-sulfur centers, and the transmembrane subunit containing the electron donor (quinol). The

>cd03497 SQR_TypeB_1_TM Succinate:quinone oxidoreductase (SQR) Type B subfamily 1, transmembrane subunit; composed of proteins similar to Bacillus subtilis SQR

Probab=96.84  E-value=0.012  Score=42.61  Aligned_cols=61  Identities=25%  Similarity=0.369  Sum_probs=46.5

Q ss_pred             HHHHHHHHHH-HHHHH----HHH-HhhcChhhHHHHHHHHHhccchHHHHHHHHHH-HHHHHHHHHHHHHHH
Q psy9433           6 SITHRGTGVA-LTAYA----LGL-AGVGLTTDINSVVSFVDALNLSAPILLAGKFI-LAFPVSYHTANGIRH   70 (105)
Q Consensus         6 SI~HRiTGv~-L~~~~----~~l-~~l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~-~~~a~~yH~~nGiRH   70 (105)
                      .-+|.+||++ |.+++    .+- ....+|+.|+.+.+.+++.    +..+.++.+ +..++..|.+.|+|-
T Consensus         7 ~~~~slTGl~pL~lFl~~Hl~gN~~i~~g~~afn~ya~~l~~~----~~l~~~~~~ll~~~~l~H~~~a~~l   74 (207)
T cd03497           7 RRLHSLLGVVPIGLFLIEHLLTNSSAASGPEGFNAAVNFMHSL----PGLLLIEIFGIFLPLLFHAIYGIYI   74 (207)
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHHHhCHHHHHHHHHHHHhC----hHHHHHHHHHHHHHHHHHHHHHHHH
Confidence            4589999999 98872    222 2347999999999988873    245566666 559999999999983

SQR catalyzes the oxidation of succinate to fumarate coupled to the reduction of quinone to quinol. Bacillus subtilis SQR reduces low potential quinones such as menaquinone. SQR is also called succinate dehydrogenase (Sdh) or Complex II and is part of the citric acid cycle and the aerobic respiratory chain. SQR is composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. Members of this subfamily are classified as Type B as they contain one transmembrane subunit and two heme groups. The heme and quinone binding sites reside on the transmembrane subunit. The transmembrane subunit of Bacillus subtilis SQR is also called Sdh cytochrome b558 subunit. The structural arrangement allows efficient electron transfer between the catalytic subunit, through iron-sulfur centers,

>cd03526 SQR_QFR_TypeB_TM Succinate:quinone oxidoreductase (SQR) and Quinol:fumarate reductase (QFR) Type B subfamily, transmembrane subunit; SQR catalyzes the oxidation of succinate to fumarate coupled to the reduction of quinone to quinol, while QFR catalyzes the reverse reaction

Probab=96.78  E-value=0.017  Score=41.71  Aligned_cols=64  Identities=14%  Similarity=0.012  Sum_probs=49.4

Q ss_pred             HHHHHHHHHHHHHH----HH-HHhhcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHH
Q psy9433           7 ITHRGTGVALTAYA----LG-LAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIW   73 (105)
Q Consensus         7 I~HRiTGv~L~~~~----~~-l~~l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~w   73 (105)
                      .+|-+||++|.+++    .+ +..+.+||.|+.+.+.+++.   ++.......++..++..|...|+|-..-
T Consensus         3 ~lmalTGl~L~lFl~~Hm~gNl~i~~g~~afn~ya~~l~~~---~~~~~~~~~~l~~~~~~H~~~a~~l~~~   71 (199)
T cd03526           3 WLQSATGLFLGLFMIGHLFFNSTILLGDNVMNWVAKKFELL---PIVVSFLAAFIFAVFIAHAFLGVRKFPI   71 (199)
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHhCHHHHHHHHHHHHhC---hHHHHHHHHHHHHHHHHHHHHHHHHHHH
Confidence            35778999988872    22 22347999999999988873   3455667889999999999999996663

SQR, also called succinate dehydrogenase or Complex II, is part of the citric acid cycle and the aerobic respiratory chain, while QFR is involved in anaerobic respiration with fumarate as the terminal electron acceptor. SQR and QFR share a common subunit arrangement, composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. Type B proteins contain one transmembrane subunit and two heme groups. The heme and quinone binding sites reside in the transmembrane subunits. The structural arrangement allows efficient electron transfer between the catalytic subunit, through iron-sulfur centers, and the transmembrane subunit containing the electron donor/acc

>cd03498 SQR_TypeB_2_TM Succinate:quinone oxidoreductase (SQR)-like Type B subfamily 2, transmembrane subunit; composed of proteins with similarity to the SQRs of Geobacter metallireducens and Corynebacterium glutamicum

Probab=96.54  E-value=0.017  Score=41.80  Aligned_cols=61  Identities=23%  Similarity=0.337  Sum_probs=48.5

Q ss_pred             HHHHHHHHHH----HH-HHhhcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
Q psy9433          11 GTGVALTAYA----LG-LAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWD   74 (105)
Q Consensus        11 iTGv~L~~~~----~~-l~~l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD   74 (105)
                      +||++|.+++    .+ +..+.+||.|+.+.+.+++   ..++.+.++.++..++..|.+.|+|-..-+
T Consensus         7 ~TGl~L~lFl~~Hm~gNl~i~~g~~afn~ya~~l~~---~~~~l~~~~~~ll~~~l~Hv~~a~~l~~~n   72 (209)
T cd03498           7 LTGLFLVLFLLVHLLGNLKIFFGPEAFNAYAEFLHT---LNPLLWIARLVLLVAAVLHIVFGLQLTIRN   72 (209)
T ss_pred             HHHHHHHHHHHHHHHHHHHHHhCHHHHHHHHHHHcC---cCcHHHHHHHHHHHHHHHHHHHHHHHHHHH
Confidence            6999998872    22 2235799999999998886   124678899999999999999999987775

SQR catalyzes the oxidation of succinate to fumarate coupled to the reduction of quinone to quinol. C. glutamicum SQR reduces low potential quinones such as menaquinone. SQR is also called succinate dehydrogenase (Sdh) or Complex II and is part of the citric acid cycle and the aerobic respiratory chain. SQR is composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. Members of this subfamily are classified as Type B as they contain one transmembrane subunit and two heme groups. The heme and quinone binding sites reside in the transmembrane subunit. The transmembrane subunit of members of this subfamily is also called Sdh cytochrome b558 subunit based on the Bacillus subtilis protein. The structural arrangem

>PRK13554 fumarate reductase cytochrome b-556 subunit; Provisional

Probab=96.53  E-value=0.033  Score=41.46  Aligned_cols=69  Identities=14%  Similarity=0.098  Sum_probs=52.3

Q ss_pred             HHHHHHHHHHHHHHHHHH----HH-HHhhcChhhHHHHHHHHHhccc------hHHHHHHHHHHHHHHHHHHHHHHHHHH
Q psy9433           3 SVLSITHRGTGVALTAYA----LG-LAGVGLTTDINSVVSFVDALNL------SAPILLAGKFILAFPVSYHTANGIRHL   71 (105)
Q Consensus         3 ~~~SI~HRiTGv~L~~~~----~~-l~~l~~~~~~~~~~~~~~~~~~------~~~~~~~~~~~~~~a~~yH~~nGiRHl   71 (105)
                      +..--+|=+||++|.+++    .. ...+.||+.|+.+.+.+++...      .|+...+...++..++.+|.+-|+|-.
T Consensus        22 a~~d~lmslTGl~L~lFL~~Hm~~N~sil~G~eafN~~a~fl~~~~~~~~~~~~P~l~~~~~~~l~~~~i~H~~~a~~l~  101 (241)
T PRK13554         22 AKADKLQSATGIMLGCFLLLHMHFESSILLGKEAFYHVVQFLEGGMFSSTGHGFPIVTKVFSVFMLLVVIVHAAVALRRF  101 (241)
T ss_pred             hHHHHHHHHHHHHHHHHHHHHHHHHHHHHhCHHHHHHHHHHHhccccccccccccHHHHHHHHHHHHHHHHHHHHHHHHc
Confidence            445667889999988772    22 2335799999999998885211      246778889999999999999999963

>PRK13553 fumarate reductase cytochrome b-556 subunit; Provisional

Probab=96.03  E-value=0.075  Score=39.99  Aligned_cols=64  Identities=20%  Similarity=0.099  Sum_probs=42.9

Q ss_pred             HHHHHHHHHHHHHHH-HHHHHhh-c-----Ch-hhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhc
Q psy9433           5 LSITHRGTGVALTAY-ALGLAGV-G-----LT-TDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTG   76 (105)
Q Consensus         5 ~SI~HRiTGv~L~~~-~~~l~~l-~-----~~-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g   76 (105)
                      +..+||+||+++.+. .+=++.. .     +| .+++    .+++.  ..|   .+-+..+.+..+|..||+.=+....|
T Consensus       123 lW~~Q~iTG~ilf~~~~~Hl~~i~~~~~~Ig~~~Sa~----rv~~~--~~w---~fYlvlL~~v~lH~~iGLyR~~VKWG  193 (258)
T PRK13553        123 LWFIQAFTGFAMFFLASVHLYVMLTNPDKIGPYGSSD----RVVSQ--NMW---LLYIVLLFAVELHGSIGLYRLAVKWG  193 (258)
T ss_pred             hHHHHHHHHHHHHHHHHHHHHhhhcCccccCchhhHH----HHhCC--cHH---HHHHHHHHHHHHHHHHhhhheeeEEE
Confidence            678999999999987 3333331 2     22 2233    23222  122   36667888999999999999998887


Q ss_pred             c
Q psy9433          77 R   77 (105)
Q Consensus        77 ~   77 (105)
                      .
T Consensus       194 ~  194 (258)
T PRK13553        194 W  194 (258)
T ss_pred             e
Confidence            5

>TIGR02046 sdhC_b558_fam succinate dehydrogenase (or fumarate reductase) cytochrome b subunit, b558 family

Probab=96.01  E-value=0.086  Score=38.41  Aligned_cols=65  Identities=22%  Similarity=0.276  Sum_probs=48.3

Q ss_pred             HHHHHHHHHHHHHH----HH-HHhhcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
Q psy9433           7 ITHRGTGVALTAYA----LG-LAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWD   74 (105)
Q Consensus         7 I~HRiTGv~L~~~~----~~-l~~l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD   74 (105)
                      .+|=+||+++.+++    .+ +..+.+|+.|+.+.+.+++.   ++.......++..++..|.+.|+|-..-.
T Consensus         7 ~lmalTGl~l~~Fl~~Hm~gNl~~~~g~~afn~ya~~L~~~---~~~~~~~~~~L~~~~l~H~~~a~~l~~~n   76 (214)
T TIGR02046         7 VVMALTGLVLLLFLVVHMVGNLFALFGAEAFNAAAHFLRSL---PFRLWLERIILFVPFILHAVYAVILSIRN   76 (214)
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHhCHHHHHHHHHHHHhC---hHHHHHHHHHHHHHHHHHHHHHHHHHHHH
Confidence            45778999999762    22 22357999999999988874   22245667899999999999999755554

This family consists of the succinate dehydrogenase subunit C of Bacillus subtilis, designated cytochrome b-558, and related sequences that include a fumarate reductase subunit C. This subfamily is only weakly similar to the main group of succinate dehydrogenase cytochrome b subunits described by Pfam model pfam01127.

>PRK13553 fumarate reductase cytochrome b-556 subunit; Provisional

Probab=95.97  E-value=0.091  Score=39.55  Aligned_cols=67  Identities=12%  Similarity=0.099  Sum_probs=51.6

Q ss_pred             HHHHHHHHHHHHHHHHHH----HHH-HhhcChhhHHHHHHHHHhccc---h-HHHHHHHHHHHHHHHHHHHHHHHH
Q psy9433           3 SVLSITHRGTGVALTAYA----LGL-AGVGLTTDINSVVSFVDALNL---S-APILLAGKFILAFPVSYHTANGIR   69 (105)
Q Consensus         3 ~~~SI~HRiTGv~L~~~~----~~l-~~l~~~~~~~~~~~~~~~~~~---~-~~~~~~~~~~~~~a~~yH~~nGiR   69 (105)
                      +..=.+|=+||++|+++.    +.. ..+.||+.++...++++...+   + +++..+.-++...++.+|.+-|+|
T Consensus        22 a~lD~~qSltGviLglFl~~Hm~~~ssil~G~~afn~va~f~E~~~~~~~g~p~~~sl~~~~I~l~~l~Ha~lalr   97 (258)
T PRK13553         22 AKLDFLQSATGLFLGLFMWAHMFFVSTILISDDAMYKVAKFFEGSFFFKAGEPALVSFVAAGVILIFVVHAFLAMR   97 (258)
T ss_pred             hHHHHHHHHHHHHHHHHHHHHHHHHHHHHcCHHHHHHHHHHHhhCccccCCcchhHHHHHHHHHHHHHHHHHHHHh
Confidence            445578899999988872    222 336899999999999886433   1 455567778899999999999999

>PRK13554 fumarate reductase cytochrome b-556 subunit; Provisional

Probab=95.59  E-value=0.2  Score=37.32  Aligned_cols=75  Identities=15%  Similarity=0.042  Sum_probs=51.4

Q ss_pred             HHHHHHHHHHHH-HHHHHhh------cChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhccccc
Q psy9433           8 THRGTGVALTAY-ALGLAGV------GLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALT   80 (105)
Q Consensus         8 ~HRiTGv~L~~~-~~~l~~l------~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g~~   80 (105)
                      .+|+||+++.++ .+=+...      ..+.+.+...   +    ++++  .+-.....++.+|..+|+.=.....|..-+
T Consensus       128 ~q~~TG~iil~Fi~~HL~~~~~~~~i~~~~s~~~v~---~----~~~~--~~Ylv~l~al~~Hl~hGl~s~~qtwG~~~~  198 (241)
T PRK13554        128 WQLITGFILFFLVPVHLFTMILNPEIGPHLSAERVY---H----DNAW--LLYALLLPAVVIHAMIGLYRVAVKWGLTTN  198 (241)
T ss_pred             HHHHHHHHHHHHHHHHHHHHHhccccccccchhhhc---c----cchH--HHHHHHHHHHHHHHHHHHHHHHhHhccCCC
Confidence            899999999887 3222221      1111222221   1    2223  466778899999999999999999998777


Q ss_pred             HHHHHHHHHHH
Q psy9433          81 IKKVYTTGYAM   91 (105)
Q Consensus        81 ~~~~~~~~~~v   91 (105)
                      ++..++.+++.
T Consensus       199 r~~~r~~~~v~  209 (241)
T PRK13554        199 RSGLRKVAKVL  209 (241)
T ss_pred             cHHHHHHHHHH
Confidence            78888888776

>PRK04987 fumarate reductase subunit C; Provisional

Probab=94.71  E-value=0.86  Score=31.01  Aligned_cols=93  Identities=18%  Similarity=0.181  Sum_probs=63.9

Q ss_pred             HHHHHHHHHHHHH----HHHHHhh-cChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHH-----HHHhc
Q psy9433           7 ITHRGTGVALTAY----ALGLAGV-GLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHL-----IWDTG   76 (105)
Q Consensus         7 I~HRiTGv~L~~~----~~~l~~l-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl-----~wD~g   76 (105)
                      .++-.|++....+    ++++..+ .||++++.+.++.+++     +.-++....+.+..||.-.=..-.     ++--|
T Consensus        27 MlRE~T~v~~~~f~lvLl~Gl~~L~~g~~aw~~f~~flqnP-----iv~~lniiaL~a~LlHa~TwF~~~Pka~~i~v~~  101 (130)
T PRK04987         27 MLREATAVPAVWFSLVLIYGLFALKNGPEAWAGFVSFLQNP-----IVVILNIITLAAALLHTKTWFEMAPKAANIIVKD  101 (130)
T ss_pred             HHHHHhHHHHHHHHHHHHHHHHHHccCHHHHHHHHHHHhCc-----HHHHHHHHHHHHHHHHHHHHHHHcchhheeeecC
Confidence            3455677766655    3555554 6899999999988876     677888889999999986422211     11124


Q ss_pred             ccccHHHHHHHHHHHHHHHHHHHHHHHh
Q psy9433          77 RALTIKKVYTTGYAMLGAAILTNLVLTL  104 (105)
Q Consensus        77 ~g~~~~~~~~~~~~v~~~s~v~t~~~~~  104 (105)
                      +.++.+.+.+..|++.++.-++.++++.
T Consensus       102 ~~l~~~~ii~~~wa~~avvs~i~L~i~~  129 (130)
T PRK04987        102 EKMGPEPIIKALWAVTAVVSLVILVVAL  129 (130)
T ss_pred             ccCChHHHHHHHHHHHHHHHHHHHHHHh
Confidence            5577888888888888777666666543

>PF02313 Fumarate_red_D: Fumarate reductase subunit D; InterPro: IPR003418 Fumarate reductase is a membrane-bound flavoenzyme consisting of four subunits, A-B

Probab=93.94  E-value=1.1  Score=29.98  Aligned_cols=45  Identities=16%  Similarity=0.113  Sum_probs=38.1

Q ss_pred             hhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhcccc
Q psy9433          30 TDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRAL   79 (105)
Q Consensus        30 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g~   79 (105)
                      .+|++..++.+++     +.+++.+++.....+|..--+||-+=|.+...
T Consensus        49 ~sy~~i~~f~~~~-----~g~l~ll~~i~lplwha~HRi~h~lHDl~ih~   93 (118)
T PF02313_consen   49 LSYERILAFAQSW-----IGKLFLLGVIALPLWHAAHRIHHGLHDLKIHV   93 (118)
T ss_dssp             TSHHHHHHHHTSH-----HHHHHHHHHHHHHHHHHHHHHHHHHHHTT---
T ss_pred             CCHHHHHHHHhch-----HHHHHHHHHHHHHHHHHHHHHHHHHhcccccc
Confidence            3699999887775     88999999999999999999999999987654

A and B comprise the membrane-extrinsic catalytic domain and C and D link the catalytic centres to the electron-transport chain. This family consists of the 13kDa hydrophobic subunit D. This component may be required to anchor the catalytic components of the fumarate reductase complex to the cytoplasmic membrane.; GO: 0006106 fumarate metabolic process, 0016020 membrane; PDB: 3P4R_P 1KF6_P 3P4Q_P 3P4S_D 3CIR_P 2B76_D 1L0V_P 3P4P_D 1KFY_P.

>PF02300 Fumarate_red_C: Fumarate reductase subunit C; InterPro: IPR003510 Fumarate reductase is a membrane-bound flavoenzyme consisting of four subunits, A-B

Probab=91.48  E-value=3.2  Score=28.24  Aligned_cols=91  Identities=15%  Similarity=0.173  Sum_probs=57.2

Q ss_pred             HHHHHHHHHHHH----HHHHHhh-cChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHH--HHHh---cc
Q psy9433           8 THRGTGVALTAY----ALGLAGV-GLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHL--IWDT---GR   77 (105)
Q Consensus         8 ~HRiTGv~L~~~----~~~l~~l-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl--~wD~---g~   77 (105)
                      +.-.|.+....+    ++++..+ .||+.|+.+.++.+++     +.-++....+.+..||...=..-.  .+..   |+
T Consensus        27 lRE~T~v~~~~f~l~Ll~Gl~~L~~G~~aw~~~~~fl~nP-----~vv~lnliaLaa~L~Ha~TwF~l~Pkam~i~v~~~  101 (129)
T PF02300_consen   27 LREGTSVPVAWFSLVLLYGLFALGQGPEAWQGWLAFLQNP-----IVVILNLIALAAALLHAKTWFELAPKAMPIIVGGE  101 (129)
T ss_dssp             HHHHTHHHHHHHHHHHHHHHHHHHTHHHHHHHHHHHHTSH-----HHHHHHHHHHHHHHHHHHHHHHHGGGG---EETTE
T ss_pred             HHHHhHHHHHHHHHHHHHHHHHHccCHHHHHHHHHHHcCc-----HHHHHHHHHHHHHHHHHHHHHHHchhhhhhhcCCe
Confidence            444566665555    3555554 5889999999988775     677888999999999986422211  0111   34


Q ss_pred             cccHHHHHHHHHHHHHHHHHHHHHHH
Q psy9433          78 ALTIKKVYTTGYAMLGAAILTNLVLT  103 (105)
Q Consensus        78 g~~~~~~~~~~~~v~~~s~v~t~~~~  103 (105)
                      ....+.+.+..|++.+..-++.+.+.
T Consensus       102 ~v~~~~i~~~~w~~~~~vsvv~L~~v  127 (129)
T PF02300_consen  102 RVPPRPIVKGLWAATAVVSVVVLVLV  127 (129)
T ss_dssp             E--SHHHHHHHHHHHHHHHHHHHHHH
T ss_pred             eCCHHHHHHHHHHHHHHHHHHHHHHH
Confidence            46667777777877766655544443

A and B comprise the membrane-extrinsic catalytic domain and C and D link the catalytic centres to the electron-transport chain. This family consists of the 15kDa hydrophobic subunit C.; GO: 0016020 membrane; PDB: 1KFY_O 1L0V_O 3P4S_O 2B76_O 3CIR_O 3P4R_C 1KF6_O 3P4P_C 3P4Q_C.

>cd00547 QFR_TypeD_subunitD Quinol:fumarate reductase (QFR) Type D subfamily, 13kD hydrophobic subunit D; QFR couples the reduction of fumarate to succinate to the oxidation of quinol to quinone, the opposite reaction to that catalyzed by the related protein, succinate:quinine oxidoreductase (SQR)

Probab=90.82  E-value=3.5  Score=27.50  Aligned_cols=44  Identities=16%  Similarity=0.213  Sum_probs=39.9

Q ss_pred             hhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhcc
Q psy9433          29 TTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGR   77 (105)
Q Consensus        29 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~   77 (105)
                      ..+|++..++.+++     ++|++.++++....+|.+--++|-+=|.+.
T Consensus        44 a~~y~~i~aFa~s~-----iG~l~ll~~i~lplWh~~HRihh~lHDlki   87 (115)
T cd00547          44 ALSYDRIIAFAQSW-----IGKLFLLVLIILPMWHAMHRIHHGLHDLKI   87 (115)
T ss_pred             ccCHHHHHHHHHhH-----HHHHHHHHHHHHHHHHHHHHHHHhhhcccc
Confidence            46899999988775     899999999999999999999999999876

QFRs oxidize low potential quinols such as menaquinol and are involved in anaerobic respiration with fumarate as the terminal electron acceptor. SQR and QFR share a common subunit arrangement, composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. Members of this subfamily are classified as Type D as they contain two transmembrane subunits (C and D) and no heme groups. The structural arrangement allows efficient electron transfer between the catalytic subunit, through iron-sulfur centers, and the transmembrane subunit containing the electron donor (quinol). The quinone binding site resides in the transmembrane subunits.

>cd00546 QFR_TypeD_subunitC Quinol:fumarate reductase (QFR) Type D subfamily, 15kD hydrophobic subunit C; QFR couples the reduction of fumarate to succinate to the oxidation of quinol to quinone, the opposite reaction to that catalyzed by the related protein, succinate:quinine oxidoreductase (SQR)

Probab=89.18  E-value=5.2  Score=27.04  Aligned_cols=90  Identities=16%  Similarity=0.197  Sum_probs=59.7

Q ss_pred             HHHHHHHHHHHHH----HHHHHhh-cChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHH--HHH---hc
Q psy9433           7 ITHRGTGVALTAY----ALGLAGV-GLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHL--IWD---TG   76 (105)
Q Consensus         7 I~HRiTGv~L~~~----~~~l~~l-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl--~wD---~g   76 (105)
                      .++-.|++....+    ++++..+ .||++++.+.++.+++     +.-++....+.+..||...=..-.  .++   -|
T Consensus        23 MlRE~T~v~~~~f~lvLl~Gl~~L~~g~~aw~~f~~flqnP-----iv~~lniiaL~a~L~Ha~TwF~~~Pkam~i~v~~   97 (124)
T cd00546          23 MLREATAVPTVWFSLVLLYGLFALGSGPESWAGFVSFLQNP-----IVVLLNIIALAAALLHAKTWFEMAPKVMNIIVKG   97 (124)
T ss_pred             HHHHHhHHHHHHHHHHHHHHHHHHhcCHHHHHHHHHHHhCc-----HHHHHHHHHHHHHHHHHHHHHHHhhhhhhhhccC
Confidence            4555677766655    3555554 6899999999988886     677888889999999976422211  122   23


Q ss_pred             ccccHHHHHHHHHHHHHHHHHHHHH
Q psy9433          77 RALTIKKVYTTGYAMLGAAILTNLV  101 (105)
Q Consensus        77 ~g~~~~~~~~~~~~v~~~s~v~t~~  101 (105)
                      +..+.+.+.+..|++.++.-++.+.
T Consensus        98 ~~l~~~~iv~~~wa~~avvs~i~L~  122 (124)
T cd00546          98 ERVPPEAITKALWAVTAVVSVVALV  122 (124)
T ss_pred             ccCChHHHHHHHHHHHHHHHHHHHH
Confidence            4466777777778777665554443

QFRs oxidize low potential quinols such as menaquinol and are involved in anaerobic respiration with fumarate as the terminal electron acceptor. SQR and QFR share a common subunit arrangement, composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. Members of this subfamily are classified as Type D as they contain two transmembrane subunits (C and D) and no heme groups. The structural arrangement allows efficient electron transfer between the catalytic subunit, through iron-sulfur centers, and the transmembrane subunit containing the electron donor (quinol). The quinone binding site resides in the transmembrane subunits.

>PRK05470 fumarate reductase subunit D; Provisional

Probab=88.95  E-value=3.6  Score=27.52  Aligned_cols=45  Identities=13%  Similarity=0.119  Sum_probs=40.0

Q ss_pred             hhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhcccc
Q psy9433          30 TDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRAL   79 (105)
Q Consensus        30 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g~   79 (105)
                      .+|+...++.+++     ++|++.++++....+|.+--+.|-+=|.+...
T Consensus        49 ~sy~~i~aFa~s~-----iG~l~ll~~i~lplWh~~HRihHglHDlkih~   93 (118)
T PRK05470         49 LSYERVLAFAQSF-----IGKLFLLLMIVLPLWCGLHRIHHGMHDLKIHV   93 (118)
T ss_pred             cCHHHHHHHHHhH-----HHHHHHHHHHHHHHHHHHHHHHHHHhcccccc
Confidence            5799999988775     89999999999999999999999999987653

>cd03496 SQR_TypeC_CybS SQR catalyzes the oxidation of succinate to fumarate coupled to the reduction of quinone to quinol

Probab=83.83  E-value=9.4  Score=24.74  Aligned_cols=52  Identities=21%  Similarity=0.101  Sum_probs=37.4

Q ss_pred             HHHHHHHHHHHHHH-HHHHHhhcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhcc
Q psy9433           6 SITHRGTGVALTAY-ALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGR   77 (105)
Q Consensus         6 SI~HRiTGv~L~~~-~~~l~~l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~   77 (105)
                      ...+|+|+++|... ++.+....             +   +|    .....+..+.++|+--|.+-.+-|+-+
T Consensus         7 w~~eR~~avaLlpL~~~~~~~~~-------------~---~p----il~~ll~~~~~~H~~~G~q~vIeDYv~   59 (104)
T cd03496           7 WTFERILAVSLLPLTPAAFFAPG-------------L---SP----VMDAALAAALLLHSHWGFESCIIDYVP   59 (104)
T ss_pred             HHHHHHHHHHHHHHHHHHHHHhc-------------c---cH----HHHHHHHHHHHHHHHhcceeeeeecCC
Confidence            45799999998765 33222211             1   11    456678889999999999999999876

Eukaryotic SQRs reduce high potential quinones such as ubiquinone. SQR is also called succinate dehydrogenase or Complex II, and is part of the citric acid cycle and the aerobic respiratory chain. SQR is composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. Members of this subfamily are classified as Type C SQRs because they contain two transmembrane subunits and one heme group. CybS and CybL are the two transmembrane proteins of eukaryotic SQRs. They contain heme and quinone binding sites. CybS is the eukaryotic homolog of the bacterial SdhD subunit. The two-electron oxidation of succinate in the flavoprotein active site is coupled to the two-electron reduction of quinone in the transmembrane subunits via electron transport through FAD and three iron-sulfur centers. The reversible reduction of

>PRK13603 fumarate reductase subunit C; Provisional

Probab=82.16  E-value=13  Score=25.16  Aligned_cols=84  Identities=12%  Similarity=0.103  Sum_probs=56.4

Q ss_pred             HHHHHHHHHHHHH----HHHHHhh-cChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHH--HHH---hc
Q psy9433           7 ITHRGTGVALTAY----ALGLAGV-GLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHL--IWD---TG   76 (105)
Q Consensus         7 I~HRiTGv~L~~~----~~~l~~l-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl--~wD---~g   76 (105)
                      .++-.|++....+    ++++..+ .||++++.+.++.+++     +.-++....+.+..||.-.=..-.  .++   -|
T Consensus        23 MlRE~T~v~~~~f~lvLl~Gl~~L~~G~~aw~~f~~flqnP-----ivv~lniiaL~a~L~Ha~TwF~~~Pkam~I~v~~   97 (126)
T PRK13603         23 MLREISCIFVAWFVLYLVLVLRAVGAGGNSYQRFLDFSANP-----VVVVLNVVALSFLLLHAVTWFGSAPRAMVIQVRG   97 (126)
T ss_pred             HHHHHhhHHHHHHHHHHHHHHHHHhcChHHHHHHHHHHhCc-----HHHHHHHHHHHHHHHHHHHHHHHhhhhhhhhccC
Confidence            4555677766665    3555544 6899999999988876     677888889999999976422211  122   24


Q ss_pred             ccccHHHHHHHHHHHHHHH
Q psy9433          77 RALTIKKVYTTGYAMLGAA   95 (105)
Q Consensus        77 ~g~~~~~~~~~~~~v~~~s   95 (105)
                      +.++.+.+.+..|++.++.
T Consensus        98 ~~l~~~~iv~~~wa~~avv  116 (126)
T PRK13603         98 RRVPARAVLAGHYAAWLVV  116 (126)
T ss_pred             CcCChHHHHHHHHHHHHHH
Confidence            5567777777777765544

>PF07950 DUF1691: Protein of unknown function (DUF1691); InterPro: IPR012472 This family of fungal proteins is uncharacterised

Probab=81.89  E-value=3.6  Score=26.75  Aligned_cols=44  Identities=14%  Similarity=0.068  Sum_probs=31.7

Q ss_pred             hhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHh
Q psy9433          29 TTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDT   75 (105)
Q Consensus        29 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~   75 (105)
                      +++++...+.+++.   +++..+-..++..+.+||+.+|+--.+...
T Consensus        24 ~~~L~~v~~~~~~~---p~~~~~~~~~Lv~~~~~Hv~sG~a~~~~~~   67 (110)
T PF07950_consen   24 DIGLEYVRHGYQSS---PVFGILEYLLLVGSGVYHVVSGIALRLGRR   67 (110)
T ss_pred             hhhHHHHHHHHcCC---chhhHHHHHHHHHHHHHHHHHHHHHHHHHH
Confidence            45666676666653   344455667888999999999997777665

Each protein contains two copies of this region.

---

Homologous Structure Templates

Structure Templates Detected by BLAST

Original result of BLAST against Protein Data Bank

ID	Length	Definition	E-value
Query	105
2fbw_C	141	Avian Respiratory Complex Ii With Carboxin Bound Le		6e-16
1zoy_C	140	Crystal Structure Of Mitochondrial Respiratory Comp		5e-15
2h88_C	140	Avian Mitochondrial Respiratory Complex Ii At 1.8 A		1e-14
1yq3_C	141	Avian Respiratory Complex Ii With Oxaloacetate And		1e-14
3vr8_C	188	Mitochondrial Rhodoquinol-Fumarate Reductase From T		2e-10

>pdb|2FBW|C Chain C, Avian Respiratory Complex Ii With Carboxin Bound Length = 141

Iteration: 1
 Score = 79.0 bits (193), Expect = 6e-16,   Method: Compositional matrix adjust.
 Identities = 39/90 (43%), Positives = 56/90 (62%), Gaps = 2/90 (2%)
Query: 5   LSITHRGTGVALT--AYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSY 62
           +SITHRGTGVAL+       +A + L       V+ V +L+LS  ++ + KF L FP+SY
Sbjct: 38  MSITHRGTGVALSLGVSLFSVAALLLPEQFPHYVAVVKSLSLSPALIYSAKFALVFPLSY 97
Query: 63  HTANGIRHLIWDTGRALTIKKVYTTGYAML 92
           HT NGIRHL+WD G+   + +V  +G  +L
Sbjct: 98  HTWNGIRHLVWDMGKGFKLSQVEQSGVVVL 127

>pdb|1ZOY|C Chain C, Crystal Structure Of Mitochondrial Respiratory Complex Ii From Porcine Heart At 2.4 Angstroms Length = 140

Iteration: 1
 Score = 75.9 bits (185), Expect = 5e-15,   Method: Compositional matrix adjust.
 Identities = 40/98 (40%), Positives = 61/98 (62%), Gaps = 2/98 (2%)
Query: 5   LSITHRGTGVALTA--YALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSY 62
           +SI HRGTG+AL+A     GL+ + L  +  S +  V +L L   ++   KF + FP+ Y
Sbjct: 38  MSICHRGTGIALSAGVSLFGLSALLLPGNFESHLELVKSLCLGPTLIYTAKFGIVFPLMY 97
Query: 63  HTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNL 100
           HT NGIRHLIWD G+ LTI ++  +G  +L   +L+++
Sbjct: 98  HTWNGIRHLIWDLGKGLTIPQLTQSGVVVLILTVLSSV 135

>pdb|2H88|C Chain C, Avian Mitochondrial Respiratory Complex Ii At 1.8 Angstrom Resolution Length = 140

Iteration: 1
 Score = 74.7 bits (182), Expect = 1e-14,   Method: Compositional matrix adjust.
 Identities = 40/90 (44%), Positives = 56/90 (62%), Gaps = 2/90 (2%)
Query: 5   LSITHRGTGVALT--AYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSY 62
           +SITHRGTGVAL+       LA + L       V+ V +L+LS  ++ + KF L FP+SY
Sbjct: 38  MSITHRGTGVALSLGVSLFSLAALLLPEQFPHYVAVVKSLSLSPALIYSAKFALVFPLSY 97
Query: 63  HTANGIRHLIWDTGRALTIKKVYTTGYAML 92
           HT NGIRHL+WD G+   + +V  +G  +L
Sbjct: 98  HTWNGIRHLVWDMGKGFKLSQVEQSGVVVL 127

>pdb|1YQ3|C Chain C, Avian Respiratory Complex Ii With Oxaloacetate And Ubiquinone Length = 141

Iteration: 1
 Score = 74.7 bits (182), Expect = 1e-14,   Method: Compositional matrix adjust.
 Identities = 40/90 (44%), Positives = 56/90 (62%), Gaps = 2/90 (2%)
Query: 5   LSITHRGTGVALT--AYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSY 62
           +SITHRGTGVAL+       LA + L       V+ V +L+LS  ++ + KF L FP+SY
Sbjct: 38  MSITHRGTGVALSLGVSLFSLAALLLPEQFPHYVAVVKSLSLSPALIYSAKFALVFPLSY 97
Query: 63  HTANGIRHLIWDTGRALTIKKVYTTGYAML 92
           HT NGIRHL+WD G+   + +V  +G  +L
Sbjct: 98  HTWNGIRHLVWDMGKGFKLSQVEQSGVVVL 127

>pdb|3VR8|C Chain C, Mitochondrial Rhodoquinol-Fumarate Reductase From The Parasitic Nematode Ascaris Suum Length = 188

Iteration: 1
 Score = 60.8 bits (146), Expect = 2e-10,   Method: Compositional matrix adjust.
 Identities = 40/103 (38%), Positives = 58/103 (56%), Gaps = 4/103 (3%)
Query: 1   ITSVLSITHRGTGVALTAYALGLAGVG---LTTDINSVVSFVDALNLSAPILLAGKFILA 57
           +T ++S  HR TG A+ A  L + GVG   L  D  + V F+  L +   IL   KFI+A
Sbjct: 67  MTWMVSGLHRVTGCAM-AGTLLIGGVGFSVLPLDFTTFVEFIRGLGIPWVILDTFKFIIA 125
Query: 58  FPVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNL 100
           FP+++HT NGIR + +D  +   I  +Y   Y +LG A L +L
Sbjct: 126 FPIAFHTLNGIRFIGFDMAKGTDIPSIYRGAYLVLGLAALISL 168

Structure Templates Detected by RPS-BLAST

Original result of RPS-BLAST against PDB70 database

ID	Length	Definition	E-value
Query	105
1zoy_C	140	Large cytochrome binding protein, FAD-binding prot	3e-21
2h88_C	140	Succinate dehydrogenase cytochrome B, large subun;	2e-20
3vr8_C	188	Cytochrome B-large subunit; membrane protein, redu	3e-18
2wdq_C	129	Succinate dehydrogenase cytochrome B556 subunit; s	3e-18

>1zoy_C Large cytochrome binding protein, FAD-binding protein; succinate, ubiquinone oxidoreductase, mitochondrial respiratory complex II; HET: FAD HEM EPH UQ1; 2.40A {Sus scrofa} PDB: 1zp0_C* 3abv_C* 3ae1_C* 3ae2_C* 3ae3_C* 3ae4_C* 3ae5_C* 3ae6_C* 3ae7_C* 3ae8_C* 3ae9_C* 3aea_C* 3aeb_C* 3aec_C* 3aed_C* 3aee_C* 3aef_C* 3aeg_C* 3sfd_C* 3sfe_C* Length = 140

 Score = 81.1 bits (200), Expect = 3e-21
 Identities = 40/107 (37%), Positives = 63/107 (58%), Gaps = 2/107 (1%)

Query: 1   ITSVLSITHRGTGVALT--AYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAF 58
           +   +SI HRGTG+AL+      GL+ + L  +  S +  V +L L   ++   KF + F
Sbjct: 34  LPMAMSICHRGTGIALSAGVSLFGLSALLLPGNFESHLELVKSLCLGPTLIYTAKFGIVF 93

Query: 59  PVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTLL 105
           P+ YHT NGIRHLIWD G+ LTI ++  +G  +L   +L+++ L  +
Sbjct: 94  PLMYHTWNGIRHLIWDLGKGLTIPQLTQSGVVVLILTVLSSVGLAAM 140

>2h88_C Succinate dehydrogenase cytochrome B, large subun; complex II, membrane protein, heme protein, iron sulfur PROT cytochrome B, oxidoreductase; HET: FAD BHG HEM UNL; 1.74A {Gallus gallus} PDB: 2h89_C* 1yq3_C* 1yq4_C* 2fbw_C* 2wqy_C* Length = 140

 Score = 78.9 bits (194), Expect = 2e-20
 Identities = 41/104 (39%), Positives = 62/104 (59%), Gaps = 2/104 (1%)

Query: 1   ITSVLSITHRGTGVALTA--YALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAF 58
           +   +SITHRGTGVAL+       LA + L       V+ V +L+LS  ++ + KF L F
Sbjct: 34  LPMAMSITHRGTGVALSLGVSLFSLAALLLPEQFPHYVAVVKSLSLSPALIYSAKFALVF 93

Query: 59  PVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVL 102
           P+SYHT NGIRHL+WD G+   + +V  +G  +L   +L++  +
Sbjct: 94  PLSYHTWNGIRHLVWDMGKGFKLSQVEQSGVVVLILTLLSSAAI 137

>3vr8_C Cytochrome B-large subunit; membrane protein, reductase, mitochondria MEMB oxidoreductase; HET: FAD HEM RQX EPH; 2.81A {Ascaris suum} PDB: 3vrb_C* Length = 188

 Score = 74.5 bits (182), Expect = 3e-18
 Identities = 36/106 (33%), Positives = 56/106 (52%), Gaps = 2/106 (1%)

Query: 1   ITSVLSITHRGTGVALTA--YALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAF 58
           +T ++S  HR TG A+       G+    L  D  + V F+  L +   IL   KFI+AF
Sbjct: 67  MTWMVSGLHRVTGCAMAGTLLIGGVGFSVLPLDFTTFVEFIRGLGIPWVILDTFKFIIAF 126

Query: 59  PVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLVLTL 104
           P+++HT NGIR + +D  +   I  +Y   Y +LG A L +L + +
Sbjct: 127 PIAFHTLNGIRFIGFDMAKGTDIPSIYRGAYLVLGLAALISLAVVV 172

>2wdq_C Succinate dehydrogenase cytochrome B556 subunit; succinate dehydrogenase activity, cell inner membrane, trica acid cycle; HET: FAD HEM CBE; 2.40A {Escherichia coli} PDB: 1nen_C* 2acz_C* 1nek_C* 2wdr_C* 2wdv_C* 2wp9_C* 2ws3_C* 2wu5_C* 2wu2_C* Length = 129

 Score = 72.8 bits (179), Expect = 3e-18
 Identities = 25/107 (23%), Positives = 48/107 (44%), Gaps = 3/107 (2%)

Query: 1   ITSVLSITHRGTGVALTAYALGLAGVGLTTDINSVVSFVDALNL-SAPILLAGKFILAFP 59
           IT++ SI HR +GV     A+G+    L T ++S   F  A  +  +  +    + +   
Sbjct: 22  ITAIASILHRVSGVIT-FVAVGILLWLLGTSLSSPEGFEQASAIMGSFFVKFIMWGILTA 80

Query: 60  VSYHTANGIRHLIWDTGRALTIKK-VYTTGYAMLGAAILTNLVLTLL 105
           ++YH   GIRH++ D G      +    +        ++ +L+  +L
Sbjct: 81  LAYHVVVGIRHMMMDFGYLEETFEAGKRSAKISFVITVVLSLLAGVL 127

Structure Templates Detected by HHsearch

Original result of HHsearch against PDB70 database

ID	Length	Definition	Probability
Query	105
3vr8_C	188	Cytochrome B-large subunit; membrane protein, redu	100.0
1zoy_C	140	Large cytochrome binding protein, FAD-binding prot	99.98
2h88_C	140	Succinate dehydrogenase cytochrome B, large subun;	99.98
2wdq_C	129	Succinate dehydrogenase cytochrome B556 subunit; s	99.97
2wdq_D	115	Succinate dehydrogenase hydrophobic membrane ANCH	99.64
2bs2_C	256	Quinol-fumarate reductase diheme cytochrome B subu	96.9
2bs2_C	256	Quinol-fumarate reductase diheme cytochrome B subu	93.83
1kf6_D	119	Fumarate reductase 13 kDa hydrophobic protein; res	92.21
1kf6_C	130	Fumarate reductase 15 kDa hydrophobic protein; res	87.1
2h88_D	103	Succinate dehydrogenase cytochrome B, small subun;	81.02

>3vr8_C Cytochrome B-large subunit; membrane protein, reductase, mitochondria MEMB oxidoreductase; HET: FAD HEM RQX EPH; 2.81A {Ascaris suum} PDB: 3vrb_C*

Probab=100.00  E-value=1.2e-32  Score=195.25  Aligned_cols=104  Identities=35%  Similarity=0.531  Sum_probs=94.5

Q ss_pred             ChHHHHHHHHHHHHHHHHH--HHHHHhhcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhccc
Q psy9433           1 ITSVLSITHRGTGVALTAY--ALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRA   78 (105)
Q Consensus         1 it~~~SI~HRiTGv~L~~~--~~~l~~l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g   78 (105)
                      +||++||+|||||++|+++  ++.+..+.+|++|+.+.+.++++..|.++.++++++++++++||++|||||++||+|+|
T Consensus        67 lt~~~SIlHRITGv~L~~~l~l~~la~l~sp~~f~~~~~~~~s~~lp~~i~~lvk~~l~~a~~yH~~nGIRHLiwD~G~g  146 (188)
T 3vr8_C           67 MTWMVSGLHRVTGCAMAGTLLIGGVGFSVLPLDFTTFVEFIRGLGIPWVILDTFKFIIAFPIAFHTLNGIRFIGFDMAKG  146 (188)
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHHHHHCHHHHHHHHHHHhCccchHHHHHHHHHHHHHHHHHHHHhhHHHHHHHhccc
Confidence            4899999999999999988  34445578999999999988876567778899999999999999999999999999999


Q ss_pred             ccHHHHHHHHHHHHHHHHHHHHHHHh
Q psy9433          79 LTIKKVYTTGYAMLGAAILTNLVLTL  104 (105)
Q Consensus        79 ~~~~~~~~~~~~v~~~s~v~t~~~~~  104 (105)
                      +|+|+++++||+++++|+++++++++
T Consensus       147 l~l~~~~~sg~~vl~lSvvltl~la~  172 (188)
T 3vr8_C          147 TDIPSIYRGAYLVLGLAALISLAVVV  172 (188)
T ss_pred             ccHHHHHHHHHHHHHHHHHHHHHHHH
Confidence            99999999999999999999999875

>1zoy_C Large cytochrome binding protein, FAD-binding protein; succinate, ubiquinone oxidoreductase, mitochondrial respiratory complex II; HET: FAD HEM EPH UQ1; 2.40A {Sus scrofa} PDB: 1zp0_C* 3abv_C* 3ae1_C* 3ae2_C* 3ae3_C* 3ae4_C* 3ae5_C* 3ae6_C* 3ae7_C* 3ae8_C* 3ae9_C* 3aea_C* 3aeb_C* 3aec_C* 3aed_C* 3aee_C* 3aef_C* 3aeg_C* 3sfd_C* 3sfe_C*

Probab=99.98  E-value=6e-32  Score=184.24  Aligned_cols=105  Identities=39%  Similarity=0.687  Sum_probs=91.0

Q ss_pred             ChHHHHHHHHHHHHHHHHH--HHHHHhhcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhccc
Q psy9433           1 ITSVLSITHRGTGVALTAY--ALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRA   78 (105)
Q Consensus         1 it~~~SI~HRiTGv~L~~~--~~~l~~l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g   78 (105)
                      +||++||+|||||++|+++  +.....+.+|++|+.+.+.+++..+++.+.+.+|++++++++||++||+||++||+|+|
T Consensus        34 ~t~~~SIlHRiTGv~L~~~l~~~~~~~l~~p~~~~~~~~~~~~~~~~~~~~~~~~~~~~~al~yH~~nGiRHL~wD~g~g  113 (140)
T 1zoy_C           34 LPMAMSICHRGTGIALSAGVSLFGLSALLLPGNFESHLELVKSLCLGPTLIYTAKFGIVFPLMYHTWNGIRHLIWDLGKG  113 (140)
T ss_dssp             HHHHHHHHHHHHHHHHHHHHHHHHHHHHHSCSCHHHHHHHHHTTTCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHTTCS
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHHHHcCHHHHHHHHHHHhcchHHHHHHHHHHHHHHHHHHHHHHHhHHHHHHHhhhc
Confidence            4899999999999999998  23334467899999999887665333445577889999999999999999999999999


Q ss_pred             ccHHHHHHHHHHHHHHHHHHHHHHHhC
Q psy9433          79 LTIKKVYTTGYAMLGAAILTNLVLTLL  105 (105)
Q Consensus        79 ~~~~~~~~~~~~v~~~s~v~t~~~~~~  105 (105)
                      +|+|+.++++|+++++|++++++++++
T Consensus       114 ~~~~~~~~s~~~v~~~s~vlt~~~~~~  140 (140)
T 1zoy_C          114 LTIPQLTQSGVVVLILTVLSSVGLAAM  140 (140)
T ss_dssp             CSHHHHHHHHHHHHHHHHHHHHHHTTC
T ss_pred             ccHHHHHHHHHHHHHHHHHHHHHHHHC
Confidence            999999999999999999999998864

>2h88_C Succinate dehydrogenase cytochrome B, large subun; complex II, membrane protein, heme protein, iron sulfur PROT cytochrome B, oxidoreductase; HET: FAD BHG HEM UNL; 1.74A {Gallus gallus} PDB: 2h89_C* 1yq3_C* 1yq4_C* 2fbw_C* 2wqy_C*

Probab=99.98  E-value=1.1e-31  Score=183.02  Aligned_cols=104  Identities=39%  Similarity=0.682  Sum_probs=90.0

Q ss_pred             ChHHHHHHHHHHHHHHHHH--HHHHHhhcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhccc
Q psy9433           1 ITSVLSITHRGTGVALTAY--ALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRA   78 (105)
Q Consensus         1 it~~~SI~HRiTGv~L~~~--~~~l~~l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g   78 (105)
                      +||++||+|||||++|+++  +.....+.+|++|+.+.+.+++..+++.+.+.++++++++++||++||+||++||+|+|
T Consensus        34 lt~~~SIlHRiTGv~L~~~l~~~~~~~l~~p~~~~~~~~~~~~~~~~~~~~~~~~~~~~~al~yH~~nGiRHL~wD~g~g  113 (140)
T 2h88_C           34 LPMAMSITHRGTGVALSLGVSLFSLAALLLPEQFPHYVAVVKSLSLSPALIYSAKFALVFPLSYHTWNGIRHLVWDMGKG  113 (140)
T ss_dssp             HHHHHHHHHHHHHHHHHHHHHHHHHHHHHCSSCHHHHHHHHHHTCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHTTCC
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHHHHcCHHHHHHHHHHHHcchHHHHHHHHHHHHHHHHHHHHHHHhHHHHHHHhhhc
Confidence            4899999999999999998  23334467899999999887665333445567889999999999999999999999999


Q ss_pred             ccHHHHHHHHHHHHHHHHHHHHHHHh
Q psy9433          79 LTIKKVYTTGYAMLGAAILTNLVLTL  104 (105)
Q Consensus        79 ~~~~~~~~~~~~v~~~s~v~t~~~~~  104 (105)
                      +++|+.++++|+++++|+++++++++
T Consensus       114 ~~~~~~~~s~~~v~~~s~vlt~~~~~  139 (140)
T 2h88_C          114 FKLSQVEQSGVVVLILTLLSSAAIAS  139 (140)
T ss_dssp             CSHHHHHHHHHHHHHHHHHHHHHHHT
T ss_pred             ccHHHHHHHHHHHHHHHHHHHHHHhc
Confidence            99999999999999999999998874

>2wdq_C Succinate dehydrogenase cytochrome B556 subunit; succinate dehydrogenase activity, cell inner membrane, trica acid cycle; HET: FAD HEM CBE; 2.40A {Escherichia coli} PDB: 1nen_C* 2acz_C* 1nek_C* 2wdr_C* 2wdv_C* 2wp9_C* 2ws3_C* 2wu5_C* 2wu2_C*

Probab=99.97  E-value=2e-29  Score=169.44  Aligned_cols=99  Identities=18%  Similarity=0.240  Sum_probs=87.1

Q ss_pred             ChHHHHHHHHHHHHHHHHH-H---HHHHh-hcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHh
Q psy9433           1 ITSVLSITHRGTGVALTAY-A---LGLAG-VGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDT   75 (105)
Q Consensus         1 it~~~SI~HRiTGv~L~~~-~---~~l~~-l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~   75 (105)
                      +|+++||+|||||++|+++ .   +.+.. +.+|++|+.+.+.+.++     +.|+++++.++++.||.+||+||++||+
T Consensus        22 ~t~~~silhRiTGv~L~~~~~~~~~~l~~~~~~~~~~~~~~~~~~~~-----~~~~~~~~~~~a~~yH~~nGiRhl~~D~   96 (129)
T 2wdq_C           22 ITAIASILHRVSGVITFVAVGILLWLLGTSLSSPEGFEQASAIMGSF-----FVKFIMWGILTALAYHVVVGIRHMMMDF   96 (129)
T ss_dssp             HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHSCHHHHHHHHHHHHSH-----HHHHHHHHHHHHHHHHHHHHHHHHHHHT
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHcCHHHHHHHHHHHHhH-----HHHHHHHHHHHHHHHHHHHhHHHHHhhc
Confidence            4799999999999999988 2   22222 47899999998877664     6789999999999999999999999999


Q ss_pred             ccccc-HHHHHHHHHHHHHHHHHHHHHHHh
Q psy9433          76 GRALT-IKKVYTTGYAMLGAAILTNLVLTL  104 (105)
Q Consensus        76 g~g~~-~~~~~~~~~~v~~~s~v~t~~~~~  104 (105)
                      |+|+| +|+.++++|++++++++++++++.
T Consensus        97 G~g~~~~~~~~~~~~~vl~~s~vlt~~~~~  126 (129)
T 2wdq_C           97 GYLEETFEAGKRSAKISFVITVVLSLLAGV  126 (129)
T ss_dssp             TSSCCSHHHHHHHHHHHHHHHHHHHHHHHH
T ss_pred             cccccccHHHHHHHHHHHHHHHHHHHHHHH
Confidence            99999 999999999999999999998764

>2wdq_D Succinate dehydrogenase hydrophobic membrane ANCH subunit; succinate dehydrogenase activity, cell inner membrane, trica acid cycle; HET: FAD HEM CBE; 2.40A {Escherichia coli} PDB: 1nen_D* 2acz_D* 1nek_D* 2wdr_D* 2wdv_D* 2wp9_D* 2wu2_D* 2ws3_D* 2wu5_D*

Probab=99.64  E-value=7.6e-15  Score=96.52  Aligned_cols=74  Identities=16%  Similarity=0.164  Sum_probs=61.7

Q ss_pred             HHHHHHHHHHHHHHHH-HHHHHh--hcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhccccc
Q psy9433           4 VLSITHRGTGVALTAY-ALGLAG--VGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALT   80 (105)
Q Consensus         4 ~~SI~HRiTGv~L~~~-~~~l~~--l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g~~   80 (105)
                      --.++||+||++|.++ ++.+..  ..+|++|+.+.+.++++     +.|++..+++++..||..||+||+++|++++..
T Consensus        14 ~~Wi~~RiSgv~L~~l~~~~l~~~~~~~~~~y~~~~~~~~~p-----~~~i~~~l~l~~~~~H~~~Gir~ii~Dyv~~~~   88 (115)
T 2wdq_D           14 HDFILVRATAIVLTLYIIYMVGFFATSGELTYEVWIGFFASA-----FTKVFTLLALFSILIHAWIGMWQVLTDYVKPLA   88 (115)
T ss_dssp             HHHHHHHHHHHHHHHHHHHHHHHHTTCSSCCHHHHHHHHHSH-----HHHHHHHHHHHHHHHHHHHHHHHHHHHHCCSHH
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHHcCccCHHHHHHHHHCh-----HHHHHHHHHHHHHHHHHHHHHHHHHHHHccchh
Confidence            3578999999999998 433333  36889999999987664     678999999999999999999999999998854


Q ss_pred             HH
Q psy9433          81 IK   82 (105)
Q Consensus        81 ~~   82 (105)
                      .+
T Consensus        89 ~R   90 (115)
T 2wdq_D           89 LR   90 (115)
T ss_dssp             HH
T ss_pred             HH
Confidence            43

>2bs2_C Quinol-fumarate reductase diheme cytochrome B subunit C; 2Fe-2S, 3Fe-4S, 4Fe-4S, citric acid cycle, dihaem cytochrome B; HET: FAD HEM LMT; 1.78A {Wolinella succinogenes} SCOP: f.21.2.1 PDB: 1qlb_C* 1e7p_C* 2bs3_C* 2bs4_C*

Probab=96.90  E-value=0.021  Score=41.70  Aligned_cols=83  Identities=17%  Similarity=0.019  Sum_probs=49.8

Q ss_pred             HHHHHHHHHHHHHHH-HHHHHh-hcChh--hHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhccccc
Q psy9433           5 LSITHRGTGVALTAY-ALGLAG-VGLTT--DINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALT   80 (105)
Q Consensus         5 ~SI~HRiTGv~L~~~-~~~l~~-l~~~~--~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g~~   80 (105)
                      .+-.+|+||+++.++ .+=+.. ...|+  +.+...+.++++     ....+-.....++.+|.++|+.-...+.|..-.
T Consensus       125 ~w~~q~~tG~iillfii~Hl~~~~~~~~~~~~~~~~~~f~~p-----~~~~~Yiv~lval~~Hl~hGl~s~~qt~G~~~~  199 (256)
T 2bs2_C          125 LWWIQAMTGFAMFFLGSVHLYIMMTQPQTIGPVSSSFRMVSE-----WMWPLYLVLLFAVELHGSVGLYRLAVKWGWFDG  199 (256)
T ss_dssp             HHHHHHHHHHHHHHHHHHHHHHHHHCGGGCSTTHHHHHHHTT-----CCHHHHHHHHHHHHHHHHHHHHHHHHHHTTTCT
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHhcCccccCchhHHHHHhCh-----HHHHHHHHHHHHHHHHHHHHHHHHHHHHcccCC
Confidence            446789999998887 322221 12222  111111223332     334566778899999999999999999996433


Q ss_pred             ------HHHHHHHHHHHH
Q psy9433          81 ------IKKVYTTGYAML   92 (105)
Q Consensus        81 ------~~~~~~~~~~v~   92 (105)
                            ++..++.++.+.
T Consensus       200 ~~~~~~~~~~~~i~~~l~  217 (256)
T 2bs2_C          200 ETPDKTRANLKKLKTLMS  217 (256)
T ss_dssp             TCHHHHHHHHHHHHHHHH
T ss_pred             cchHhHHHHHHHHHHHHH
Confidence                  344455554433

>2bs2_C Quinol-fumarate reductase diheme cytochrome B subunit C; 2Fe-2S, 3Fe-4S, 4Fe-4S, citric acid cycle, dihaem cytochrome B; HET: FAD HEM LMT; 1.78A {Wolinella succinogenes} SCOP: f.21.2.1 PDB: 1qlb_C* 1e7p_C* 2bs3_C* 2bs4_C*

Probab=93.83  E-value=0.22  Score=36.15  Aligned_cols=65  Identities=11%  Similarity=-0.120  Sum_probs=48.5

Q ss_pred             HHHHHHHHHHHHHHHH----HH-HHhhcChhhHHHHHHHHHhcc----chHHHHHHHHHHHHHHHHHHHHHHHH
Q psy9433           5 LSITHRGTGVALTAYA----LG-LAGVGLTTDINSVVSFVDALN----LSAPILLAGKFILAFPVSYHTANGIR   69 (105)
Q Consensus         5 ~SI~HRiTGv~L~~~~----~~-l~~l~~~~~~~~~~~~~~~~~----~~~~~~~~~~~~~~~a~~yH~~nGiR   69 (105)
                      .=.+|=+||++|..++    .. ...+.||+.|+.+.+++++..    ..++...+...++..++.+|...|+|
T Consensus        26 ~~~lmalTGliL~lFL~~Hm~~N~~il~G~eafn~~a~fl~~~~~~~~g~p~~l~i~~~~L~~~~l~H~~~al~   99 (256)
T 2bs2_C           26 LDWWQSATGLFLGLFMIGHMFFVSTILLGDNVMLWVTKKFELDFIFEGGKPIVVSFLAAFVFAVFIAHAFLAMR   99 (256)
T ss_dssp             HHHHHHHHHHHHHHHHHHHHHHHGGGGTCHHHHHHHHHHTTCTTTSSSCCTHHHHHHHHHHHHHHHHHHHHHGG
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHHHcCHHHHHHHHHHHhcCcccccchHHHHHHHHHHHHHHHHHHHHHHHH
Confidence            3456778999988872    22 223579999999999887621    12345678888999999999999999

>1kf6_D Fumarate reductase 13 kDa hydrophobic protein; respiration, fumarate reductace, succinate dehydrogenase, CO quinol, quinone, oxidoreductase; HET: FAD HQO CE1 1PE; 2.70A {Escherichia coli} SCOP: f.21.2.2 PDB: 1kfy_D* 1l0v_D* 2b76_D* 3cir_D* 3p4p_D* 3p4q_D* 3p4r_D* 3p4s_D*

Probab=92.21  E-value=1.5  Score=28.39  Aligned_cols=46  Identities=13%  Similarity=0.174  Sum_probs=40.8

Q ss_pred             hhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhccccc
Q psy9433          30 TDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALT   80 (105)
Q Consensus        30 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g~~   80 (105)
                      .+|+...++.+++     +++++.+++.....+|.+--++|-+=|.+....
T Consensus        50 lsY~~~~aFa~s~-----ig~l~ll~~i~lplWh~~HRihh~lHDlkih~~   95 (119)
T 1kf6_D           50 LSYERVLAFAQSF-----IGRVFLFLMIVLPLWCGLHRMHHAMHDLKIHVP   95 (119)
T ss_dssp             TSHHHHHHHHTSH-----HHHHHHHHHHHHHHHHHHHHHHHHHHHTTCCCT
T ss_pred             ccHHHHHHHHhcH-----HHHHHHHHHHHHHHHHHHHHHHHhhhhheeecC
Confidence            4899999887775     889999999999999999999999999877654

>1kf6_C Fumarate reductase 15 kDa hydrophobic protein; respiration, fumarate reductace, succinate dehydrogenase, CO quinol, quinone, oxidoreductase; HET: FAD HQO CE1 1PE; 2.70A {Escherichia coli} SCOP: f.21.2.2 PDB: 1kfy_C* 1l0v_C* 2b76_C* 3cir_C* 3p4p_C* 3p4q_C* 3p4r_C* 3p4s_C*

Probab=87.10  E-value=4.7  Score=26.47  Aligned_cols=90  Identities=14%  Similarity=0.160  Sum_probs=56.9

Q ss_pred             HHHHHHHHHHHH----HHHHHhh-cChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHH--HH---hcc
Q psy9433           8 THRGTGVALTAY----ALGLAGV-GLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLI--WD---TGR   77 (105)
Q Consensus         8 ~HRiTGv~L~~~----~~~l~~l-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~--wD---~g~   77 (105)
                      +.-.|.+....+    ++++..+ .||++|+.+.++.+++     +.-++....+.+..||...=..-.=  ++   -|+
T Consensus        27 lRE~T~v~~~wf~l~Ll~Gl~~L~~G~~aw~~fv~fl~nP-----ivvilniiaLaa~L~Ha~TwF~l~Pka~~I~v~~~  101 (130)
T 1kf6_C           27 LREGTAVPAVWFSIELIFGLFALKNGPEAWAGFVDFLQNP-----VIVIINLITLAAALLHTKTWFELAPKAANIIVKDE  101 (130)
T ss_dssp             HHHHTHHHHHHHHHHHHHHHHHHHTHHHHHHHHHHHHTSS-----HHHHHHHHHHHHHHHHHHHHHHHGGGGCCCBSSSS
T ss_pred             HHHHhHHHHHHHHHHHHHHHHHHhcChHHHHHHHHHHhCc-----HHHHHHHHHHHHHHHHHHHHHHHcchhheeeeCCC
Confidence            444566655555    3455444 6889999999888876     6778888899999999864221110  11   123


Q ss_pred             cccHHHHHHHHHHHHHHHHHHHHHH
Q psy9433          78 ALTIKKVYTTGYAMLGAAILTNLVL  102 (105)
Q Consensus        78 g~~~~~~~~~~~~v~~~s~v~t~~~  102 (105)
                      ..+.+.+.+..|++.+..-++.+.+
T Consensus       102 ~~~~~~i~~~~wa~~~vvsvi~L~~  126 (130)
T 1kf6_C          102 KMGPEPIIKSLWAVTVVATIVILFV  126 (130)
T ss_dssp             BCCSHHHHHHHHHHHHHHHHHHHHH
T ss_pred             cCChHHHHHHHHHHHHHHHHHHHHH
Confidence            4556666677787776655554443

>2h88_D Succinate dehydrogenase cytochrome B, small subun; complex II, membrane protein, heme protein, iron sulfur PROT cytochrome B, oxidoreductase; HET: FAD BHG HEM UNL; 1.74A {Gallus gallus} PDB: 1yq4_D* 1yq3_D* 2fbw_D* 2h89_D* 2wqy_D* 1zoy_D* 1zp0_D* 3abv_D* 3ae1_D* 3ae2_D* 3ae3_D* 3ae4_D* 3ae5_D* 3ae6_D* 3ae7_D* 3ae8_D* 3ae9_D* 3aea_D* 3aeb_D* 3aec_D* ...

Probab=81.02  E-value=7.9  Score=24.14  Aligned_cols=55  Identities=20%  Similarity=0.170  Sum_probs=38.0

Q ss_pred             HHHHHHHHHHHHHH-HHHHHhhcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhcccccHH
Q psy9433           6 SITHRGTGVALTAY-ALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALTIK   82 (105)
Q Consensus         6 SI~HRiTGv~L~~~-~~~l~~l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g~~~~   82 (105)
                      ...+|+++++|... ++...                .   +.+   .....+..+..+|+=-|+.-.+-|+-++...+
T Consensus        10 W~~eR~~avallpL~p~~~~----------------~---~~p---v~d~~l~~~l~~H~~~G~q~vI~DYv~~~~~~   65 (103)
T 2h88_D           10 WTSERAVSALLLGLLPAAYL----------------Y---PGP---AVDYSLAAALTLHGHWGLGQVITDYVHGDTPI   65 (103)
T ss_dssp             HHHHHHHHHHHHHHHHHHHH----------------S---CSH---HHHHHHHHHHHHHHHHHHHHHHHHHCCSHHHH
T ss_pred             hHHHHHHHHHHHHHHHHHHH----------------c---CcH---HHHHHHHHHHHHHHHHhcCeeeecccccchHH
Confidence            45789999988653 21111                1   111   45566788999999999999999998764433

---

Homologous Structure Domains

Structure Domains Detected by RPS-BLAST

Original result of RPS-BLAST against SCOP70(version1.75) database

ID	Length	Definition	E-value
Query	105
d1nekc_	129	f.21.2.2 (C:) Succinate dehydrogenase subunit SdhC	1e-14

>d1nekc_ f.21.2.2 (C:) Succinate dehydrogenase subunit SdhC {Escherichia coli [TaxId: 562]} Length = 129

class: Membrane and cell surface proteins and peptides
fold: Heme-binding four-helical bundle
superfamily: Fumarate reductase respiratory complex transmembrane subunits
family: Succinate dehydrogenase/Fumarate reductase transmembrane subunits (SdhC/FrdC and SdhD/FrdD)
domain: Succinate dehydrogenase subunit SdhC
species: Escherichia coli [TaxId: 562]

 Score = 62.6 bits (152), Expect = 1e-14
 Identities = 21/106 (19%), Positives = 44/106 (41%), Gaps = 1/106 (0%)

Query: 1   ITSVLSITHRGTGVALTAYALGLAGVGLTTDINSVVSFVDALNLSAPILLAGKFILAFPV 60
           IT++ SI HR +GV        L  +  T+  +       +  + +  +    + +   +
Sbjct: 22  ITAIASILHRVSGVITFVAVGILLWLLGTSLSSPEGFEQASAIMGSFFVKFIMWGILTAL 81

Query: 61  SYHTANGIRHLIWDTGRAL-TIKKVYTTGYAMLGAAILTNLVLTLL 105
           +YH   GIRH++ D G    T +    +        ++ +L+  +L
Sbjct: 82  AYHVVVGIRHMMMDFGYLEETFEAGKRSAKISFVITVVLSLLAGVL 127

Homologous Domains Detected by HHsearch

Original result of HHsearch against SCOP70(version1.75) database

ID	Length	Definition	Probability
Query	105
d1nekc_	129	Succinate dehydrogenase subunit SdhC {Escherichia	99.97
d1nekd_	113	Succinate dehydrogenase subunit SdhD {Escherichia	99.09
d2bs2c1	254	Fumarate reductase respiratory complex cytochrome	97.82
d2bs2c1	254	Fumarate reductase respiratory complex cytochrome	96.05
d1kf6d_	119	Fumarate reductase subunit FrdD {Escherichia coli	92.85
d1kf6c_	130	Fumarate reductase subunit FrdC {Escherichia coli	92.47

>d1nekc_ f.21.2.2 (C:) Succinate dehydrogenase subunit SdhC {Escherichia coli [TaxId: 562]}

class: Membrane and cell surface proteins and peptides
fold: Heme-binding four-helical bundle
superfamily: Fumarate reductase respiratory complex transmembrane subunits
family: Succinate dehydrogenase/Fumarate reductase transmembrane subunits (SdhC/FrdC and SdhD/FrdD)
domain: Succinate dehydrogenase subunit SdhC
species: Escherichia coli [TaxId: 562]

Probab=99.97  E-value=1.9e-30  Score=172.86  Aligned_cols=99  Identities=19%  Similarity=0.237  Sum_probs=83.6

Q ss_pred             ChHHHHHHHHHHHHHHHHH-H-HH--HHh-hcChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHh
Q psy9433           1 ITSVLSITHRGTGVALTAY-A-LG--LAG-VGLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDT   75 (105)
Q Consensus         1 it~~~SI~HRiTGv~L~~~-~-~~--l~~-l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~   75 (105)
                      +||++||+||+||++++++ . ..  +.. ..+|+.|+...+...     .++.|++++++.++++||.+|||||++||.
T Consensus        22 ~t~~~SI~HRisGv~l~~~~~~~~~~l~~~~~~~~~~~~~~~~~~-----~~~~~~~~~~~~~~~~yH~~nGIRHL~wD~   96 (129)
T d1nekc_          22 ITAIASILHRVSGVITFVAVGILLWLLGTSLSSPEGFEQASAIMG-----SFFVKFIMWGILTALAYHVVVGIRHMMMDF   96 (129)
T ss_dssp             HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCHHHHHHHHHHTT-----SHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhccchHHHHHHHHHH-----HHHHHHHHHHHHHHHHHHHHHhHHHHHHHc
Confidence            4899999999999999998 2 22  222 367788877766543     347899999999999999999999999999


Q ss_pred             ccccc-HHHHHHHHHHHHHHHHHHHHHHHh
Q psy9433          76 GRALT-IKKVYTTGYAMLGAAILTNLVLTL  104 (105)
Q Consensus        76 g~g~~-~~~~~~~~~~v~~~s~v~t~~~~~  104 (105)
                      |+|+| +++.+++++++++++++.++.++.
T Consensus        97 G~g~~~~~~~~~s~~~~~~~si~~s~~~~~  126 (129)
T d1nekc_          97 GYLEETFEAGKRSAKISFVITVVLSLLAGV  126 (129)
T ss_dssp             TSSCCSHHHHHHHHHHHHHHHHHHHHHHHH
T ss_pred             ccchhhHHHHHHHHHHHHHHHHHHHHHHHH
Confidence            99986 899999999999999999998764

>d1nekd_ f.21.2.2 (D:) Succinate dehydrogenase subunit SdhD {Escherichia coli [TaxId: 562]}

class: Membrane and cell surface proteins and peptides
fold: Heme-binding four-helical bundle
superfamily: Fumarate reductase respiratory complex transmembrane subunits
family: Succinate dehydrogenase/Fumarate reductase transmembrane subunits (SdhC/FrdC and SdhD/FrdD)
domain: Succinate dehydrogenase subunit SdhD
species: Escherichia coli [TaxId: 562]

Probab=99.09  E-value=2e-09  Score=68.66  Aligned_cols=73  Identities=16%  Similarity=0.175  Sum_probs=59.6

Q ss_pred             HHHHHHHHHHHHHHH-HHHHHhh--cChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhcccccH
Q psy9433           5 LSITHRGTGVALTAY-ALGLAGV--GLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALTI   81 (105)
Q Consensus         5 ~SI~HRiTGv~L~~~-~~~l~~l--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g~~~   81 (105)
                      -.+.||+|++++... ++.+...  ..+.+|+.+.+.++++     ..+........+..||...|+|+.+-|+-++...
T Consensus        13 ~W~~qRvSAv~l~~l~~~~~~~~~~~~~~~y~~~~~~~~~~-----~~~il~~l~l~~~~~H~~lGl~~IieDYi~~~~~   87 (113)
T d1nekd_          13 DFILVRATAIVLTLYIIYMVGFFATSGELTYEVWIGFFASA-----FTKVFTLLALFSILIHAWIGMWQVLTDYVKPLAL   87 (113)
T ss_dssp             HHHHHHHHHHHHHHHHHHHHHHHTTTSSCCHHHHHHHHSSH-----HHHHHHHHHHHHHHHHHHHHHHHHHHHHCCSHHH
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHcCCCCHHHHHHHHhCh-----HHHHHHHHHHHHHHHHHHHhHhhhHHHhcCChhH
Confidence            468999999999988 5544443  4677899999887664     6788899999999999999999999999876544


Q ss_pred             H
Q psy9433          82 K   82 (105)
Q Consensus        82 ~   82 (105)
                      +
T Consensus        88 r   88 (113)
T d1nekd_          88 R   88 (113)
T ss_dssp             H
T ss_pred             H
Confidence            3

>d2bs2c1 f.21.2.1 (C:1-254) Fumarate reductase respiratory complex cytochrome b subunit, FrdC {Wolinella succinogenes [TaxId: 844]}

class: Membrane and cell surface proteins and peptides
fold: Heme-binding four-helical bundle
superfamily: Fumarate reductase respiratory complex transmembrane subunits
family: Fumarate reductase respiratory complex cytochrome b subunit, FrdC
domain: Fumarate reductase respiratory complex cytochrome b subunit, FrdC
species: Wolinella succinogenes [TaxId: 844]

Probab=97.82  E-value=0.00014  Score=51.36  Aligned_cols=69  Identities=20%  Similarity=0.094  Sum_probs=49.3

Q ss_pred             HHHHHHHHHHHHHHHH-HHHHHhh-c--ChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhcc
Q psy9433           4 VLSITHRGTGVALTAY-ALGLAGV-G--LTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGR   77 (105)
Q Consensus         4 ~~SI~HRiTGv~L~~~-~~~l~~l-~--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~   77 (105)
                      .+|-.+|+||+++.++ .+=+... .  .+.+++...+.++++     ....+-.....++.+|.+||+..+..+.|.
T Consensus       124 ~~~~~q~~tG~ill~fi~~Hl~~~~~~~~~~~~~~~~~~~~~~-----~~~~fY~l~l~av~lH~~~Gl~s~~~~wG~  196 (254)
T d2bs2c1         124 TLWWIQAMTGFAMFFLGSVHLYIMMTQPQTIGPVSSSFRMVSE-----WMWPLYLVLLFAVELHGSVGLYRLAVKWGW  196 (254)
T ss_dssp             HHHHHHHHHHHHHHHHHHHHHHHHHHCGGGCSTTHHHHHHHTT-----CCHHHHHHHHHHHHHHHHHHHHHHHHHHTT
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHcCccCCCHHHHHHHHhCh-----hHHHHHHHHHHHHHHHHHHhHHHHHHHHhc
Confidence            5788999999999887 3333321 2  234555555555553     233566778899999999999999999886

>d2bs2c1 f.21.2.1 (C:1-254) Fumarate reductase respiratory complex cytochrome b subunit, FrdC {Wolinella succinogenes [TaxId: 844]}

class: Membrane and cell surface proteins and peptides
fold: Heme-binding four-helical bundle
superfamily: Fumarate reductase respiratory complex transmembrane subunits
family: Fumarate reductase respiratory complex cytochrome b subunit, FrdC
domain: Fumarate reductase respiratory complex cytochrome b subunit, FrdC
species: Wolinella succinogenes [TaxId: 844]

Probab=96.05  E-value=0.01  Score=41.48  Aligned_cols=70  Identities=10%  Similarity=-0.059  Sum_probs=51.5

Q ss_pred             HHHHHHHHHHHHHHHHHH----HHHH-hhcChhhHHHHHHHHHhccc----hHHHHHHHHHHHHHHHHHHHHHHHHHHH
Q psy9433           3 SVLSITHRGTGVALTAYA----LGLA-GVGLTTDINSVVSFVDALNL----SAPILLAGKFILAFPVSYHTANGIRHLI   72 (105)
Q Consensus         3 ~~~SI~HRiTGv~L~~~~----~~l~-~l~~~~~~~~~~~~~~~~~~----~~~~~~~~~~~~~~a~~yH~~nGiRHl~   72 (105)
                      +..--+|=+||++|.+++    ..-. .+.||+.|+.+.+.+++...    .|+...+...++..++..|.+.|+|-..
T Consensus        24 ~~l~~l~slTGlvL~lFl~~Hm~~n~~il~g~eafn~~a~~l~~~~~~~~~~p~l~~i~~~~l~~~ll~H~~~a~~~~~  102 (254)
T d2bs2c1          24 AKLDWWQSATGLFLGLFMIGHMFFVSTILLGDNVMLWVTKKFELDFIFEGGKPIVVSFLAAFVFAVFIAHAFLAMRKFP  102 (254)
T ss_dssp             HHHHHHHHHHHHHHHHHHHHHHHHHGGGGTCHHHHHHHHHHTTCTTTSSSCCTHHHHHHHHHHHHHHHHHHHHHGGGSC
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHHHHHcCHHHHHHHHHHHHhcccccCCccHHHHHHHHHHHHHHHHHHHHHHHHHH
Confidence            344567779999988872    2222 25799999999998875311    2556677888999999999999998543

>d1kf6d_ f.21.2.2 (D:) Fumarate reductase subunit FrdD {Escherichia coli [TaxId: 562]}

class: Membrane and cell surface proteins and peptides
fold: Heme-binding four-helical bundle
superfamily: Fumarate reductase respiratory complex transmembrane subunits
family: Succinate dehydrogenase/Fumarate reductase transmembrane subunits (SdhC/FrdC and SdhD/FrdD)
domain: Fumarate reductase subunit FrdD
species: Escherichia coli [TaxId: 562]

Probab=92.85  E-value=0.58  Score=28.82  Aligned_cols=64  Identities=14%  Similarity=0.197  Sum_probs=49.8

Q ss_pred             ChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhcccccHHHHHHHHHHHHHHHHHHHHH
Q psy9433          28 LTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHLIWDTGRALTIKKVYTTGYAMLGAAILTNLV  101 (105)
Q Consensus        28 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl~wD~g~g~~~~~~~~~~~~v~~~s~v~t~~  101 (105)
                      ++.+|++..++.+++     ++|++.++++....+|.+--++|-+=|.+......     .|+.-+++.+.|++
T Consensus        48 ~a~~y~~i~aFa~s~-----iG~l~ll~~i~lplWh~~HRihHglHDlkih~p~g-----~~~fYg~A~l~sv~  111 (119)
T d1kf6d_          48 DALSYERVLAFAQSF-----IGRVFLFLMIVLPLWCGLHRMHHAMHDLKIHVPAG-----KWVFYGLAAILTVV  111 (119)
T ss_dssp             TTTSHHHHHHHHTSH-----HHHHHHHHHHHHHHHHHHHHHHHHHHHTTCCCTTH-----HHHHHHHHHHHHHH
T ss_pred             cccCHHHHHHHHhhH-----HHHHHHHHHHHHHHHHHHHHHHHHHhhhcccccch-----hHHHHHHHHHHHHH
Confidence            456899999887775     88999999999999999999999999998765432     45555555555544

>d1kf6c_ f.21.2.2 (C:) Fumarate reductase subunit FrdC {Escherichia coli [TaxId: 562]}

class: Membrane and cell surface proteins and peptides
fold: Heme-binding four-helical bundle
superfamily: Fumarate reductase respiratory complex transmembrane subunits
family: Succinate dehydrogenase/Fumarate reductase transmembrane subunits (SdhC/FrdC and SdhD/FrdD)
domain: Fumarate reductase subunit FrdC
species: Escherichia coli [TaxId: 562]

Probab=92.47  E-value=0.71  Score=28.88  Aligned_cols=91  Identities=14%  Similarity=0.164  Sum_probs=60.8

Q ss_pred             HHHHHHHHHHHH----HHHHHhh-cChhhHHHHHHHHHhccchHHHHHHHHHHHHHHHHHHHHHHHHHH--HHHh---cc
Q psy9433           8 THRGTGVALTAY----ALGLAGV-GLTTDINSVVSFVDALNLSAPILLAGKFILAFPVSYHTANGIRHL--IWDT---GR   77 (105)
Q Consensus         8 ~HRiTGv~L~~~----~~~l~~l-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a~~yH~~nGiRHl--~wD~---g~   77 (105)
                      +.-.|.+....+    ++++..+ .||++++.+.++.+++     +.-++....+.+..||...=..-.  .+..   |.
T Consensus        27 lRE~T~v~~~~f~lvLl~Gl~~L~~g~~aw~~fv~flqnP-----~vv~lniiaLaa~L~Ha~TwF~l~Pk~m~i~v~~~  101 (130)
T d1kf6c_          27 LREGTAVPAVWFSIELIFGLFALKNGPEAWAGFVDFLQNP-----VIVIINLITLAAALLHTKTWFELAPKAANIIVKDE  101 (130)
T ss_dssp             HHHHTHHHHHHHHHHHHHHHHHHHTHHHHHHHHHHHHTSS-----HHHHHHHHHHHHHHHHHHHHHHHGGGGCCCBSSSS
T ss_pred             HHHHhHHHHHHHHHHHHHHHHHHhcCHHHHHHHHHHHhCc-----HHHHHHHHHHHHHHHHHHHHHHHhhHhhhhhhcCc
Confidence            344566655555    3555555 6899999999988886     677888889999999986422211  1111   34


Q ss_pred             cccHHHHHHHHHHHHHHHHHHHHHHH
Q psy9433          78 ALTIKKVYTTGYAMLGAAILTNLVLT  103 (105)
Q Consensus        78 g~~~~~~~~~~~~v~~~s~v~t~~~~  103 (105)
                      ..+.+.+.+.-|++.++.-++.+.++
T Consensus       102 ~~~~~~iv~~~wa~~~~vsvv~L~va  127 (130)
T d1kf6c_         102 KMGPEPIIKSLWAVTVVATIVILFVA  127 (130)
T ss_dssp             BCCSHHHHHHHHHHHHHHHHHHHHHH
T ss_pred             cCChHHHHHHHHHHHHHHHHHHHHHH
Confidence            45677777777887777766665554