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3.D.1.5.1
Proton-translocating NADH dehydrogenase I.  NDUFS4 is an accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis.  However, a knockout of NDUFS4 in human iPSCs provides a model for mitochondrial complex I deficiencyin humans (Goolab et al. 2025).

Accession Number:Q74GA6
Protein Name:NuoC aka GSU0340
Length:162
Molecular Weight:18784.00
Species:Geobacter sulfurreducens [35554]
Location1 / Topology2 / Orientation3: Cell inner membrane1 / Peripheral membrane protein2 / Cytoplasmic side3
Substrate hydron

Cross database links:

RefSeq: NP_951400.1   
Entrez Gene ID: 2686824   
Pfam: PF00329   
BioCyc: GSUL243231:GSU_0340-MONOMER   
KEGG: gsu:GSU0340   

Gene Ontology

GO:0005886 C:plasma membrane
GO:0008137 F:NADH dehydrogenase (ubiquinone) activity
GO:0048038 F:quinone binding
GO:0055114 P:oxidation reduction
GO:0019684 P:photosynthesis, light reaction
GO:0006810 P:transport

References (1)

[1] “Genome of Geobacter sulfurreducens: metal reduction in subsurface environments.”  Methe B.A.et.al.   14671304

External Searches:

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence 
1:	MAENNRAVIK LKEKFAASIL DVREFRGEVT VTVAREKVVD ICRFLKESLQ YNLCTDVTAV 
61:	DYLGKQEPRF MVVYNLYSIP NKDRLRLKAG VPDADCSIDT VSCVWNSANW LEREVYDLMG 
121:	VQFNNHPDLR RILMTDDWVG HPLRKDYPLQ GPDREPYKGR LS