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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:Q74GA4
Protein Name:NuoE aka GSU0342
Length:173
Molecular Weight:19203.00
Species:Geobacter sulfurreducens [35554]
Location1 / Topology2 / Orientation3: Cell inner membrane1 / Peripheral membrane protein2 / Cytoplasmic side3
Substrate hydron

Cross database links:

RefSeq: NP_951402.1   
Entrez Gene ID: 2686723   
Pfam: PF01257   
BioCyc: GSUL243231:GSU_0342-MONOMER   
KEGG: gsu:GSU0342   

Gene Ontology

GO:0051287 F:NAD or NADH binding
GO:0008137 F:NADH dehydrogenase (ubiquinone) activity
GO:0055114 P:oxidation reduction

References (1)

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

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence 
1:	MSNAPAEATT TEEVPVEEID LGPANHVIDK YLTLPGNLMP VLQGIQDEYG YVPRPTIDLV 
61:	AERLNVYPSQ IFGVLTFYAQ FHLKPRGRFI IRVCVGTACH VQGAPRIVDT FFEKLGIGHA 
121:	ETTPDLRYTF EKVACLGACG MAPLAMVNDD TFGKMTVQKV EEIIAEYNQR PMK