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3.D.7.2.2
Membrane-bound Ni/Fe-hydrogenase complex, HydABC (Simon et al., 2008). HydC (P31875) resembles 5.A.3.5.1 (e-6), 5.A.3.2.1 (e-5), and 3.D.7.1.1 (e-4). Two protons are consumed in the cytoplasm while two protons are released in the periplasm, contributing to the pmf (Simon et al., 2008).

Accession Number:P31884
Protein Name:Quinone-reactive Ni/Fe-hydrogenase small chain
Length:354
Molecular Weight:38294.00
Species:Wolinella succinogenes [844]
Number of TMSs:4
Location1 / Topology2 / Orientation3: Cell membrane1 / Peripheral membrane protein2
Substrate hydron

Cross database links:

RefSeq: NP_907814.1   
Entrez Gene ID: 2554748   
Pfam: PF01058   
BioCyc: WSUC273121:WS1687-MONOMER   
KEGG: wsu:WS1687   

Gene Ontology

GO:0009375 C:ferredoxin hydrogenase complex
GO:0005886 C:plasma membrane
GO:0051538 F:3 iron, 4 sulfur cluster binding
GO:0051539 F:4 iron, 4 sulfur cluster binding
GO:0008901 F:ferredoxin hydrogenase activity
GO:0047067 F:hydrogen:quinone oxidoreductase activity
GO:0046872 F:metal ion binding
GO:0008137 F:NADH dehydrogenase (ubiquinone) activity
GO:0048038 F:quinone binding
GO:0055114 P:oxidation reduction

References (3)

[1] “The quinone-reactive Ni/Fe-hydrogenase of Wolinella succinogenes.”  Dross F.et.al.   1587288
[2] “”  Dross F.et.al.   8319698
[3] “Complete genome sequence and analysis of Wolinella succinogenes.”  Baar C.et.al.   14500908

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MLEEKGIERR DFMKWAGAMT AMLSLPATFT PLTAKAAELA DRLPVIWLHM AECTGCSESL 
61:	LRTDGPGIDS LIFDYISLEY HETVMAAAGW QAEHNLEHAI EKYKGRYVLM VEGGIPAGSS 
121:	EFYLTVGPHG TTGAEHARHA SANAAAIFAI GSCSSFGGVQ AARPNPTNAQ PLSKVTNKPV 
181:	INVPGCPPSE KNIVGNVLHF ILFGTLPSVD AFNRPMWAYG LRIHDLCERR GRFDAGEFVQ 
241:	EFGDEGAKKG YCLYKVGCKG PYTFNNCSKL RFNQHTSWPV QAGHGCIGCS EPDFWDTMGP 
301:	FEEPVANRLY ATAFDGLGAD KTADKIGITL LAATAVGVAA HAVLSMMVKD KENN