Q3B4W3 (NUOA_PELLD) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
NADH-quinone oxidoreductase subunit A
EC=1.6.99.5

Alternative name(s):
NADH dehydrogenase I subunit A
NDH-1 subunit A
NUO1

Gene names

Name:	nuoA
Ordered Locus Names:	Plut_0743

Organism

Pelodictyon luteolum (strain DSM 273) (Chlorobium luteolum (strain DSM 273)) [Complete proteome] [HAMAP]

Taxonomic identifier

319225 [NCBI]

Taxonomic lineage

Bacteria › Chlorobi › Chlorobia › Chlorobiales › Chlorobiaceae › Chlorobium/Pelodictyon group › Pelodictyon

Protein attributes

Sequence length	143 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory chain. The immediate electron acceptor for the enzyme in this species is believed to be a menaquinone. Couples the redox reaction to proton translocation (for every two electrons transferred, four hydrogen ions are translocated across the cytoplasmic membrane), and thus conserves the redox energy in a proton gradient By similarity. HAMAP MF_01394
Catalytic activity	NADH + quinone = NAD+ + quinol. HAMAP MF_01394
Subunit structure	NDH-1 is composed of 14 different subunits. Subunits NuoA, H, J, K, L, M, N constitute the membrane sector of the complex By similarity.
Subcellular location	Cell inner membrane; Multi-pass membrane protein By similarity HAMAP MF_01394.
Sequence similarities	Belongs to the complex I subunit 3 family.

Ontologies

Keywords
Biological process	Transport
Cellular component	Cell inner membrane Cell membrane Membrane
Domain	Transmembrane Transmembrane helix
Ligand	NAD
Molecular function	Oxidoreductase
PTM	Quinone
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	transport Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	integral to membrane Inferred from electronic annotation. Source: UniProtKB-KW plasma membrane Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	NADH dehydrogenase (ubiquinone) activity Inferred from electronic annotation. Source: InterPro quinone binding Inferred from electronic annotation. Source: UniProtKB-KW
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 143	143	NADH-quinone oxidoreductase subunit A HAMAP MF_01394		PRO_0000362712
Regions
	Transmembrane	8 – 28	21	Helical; Potential
	Transmembrane	63 – 83	21	Helical; Potential
	Transmembrane	93 – 113	21	Helical; Potential

Sequences

	Sequence		Length	Mass (Da)
	Q3B4W3 [UniParc]. Last modified November 22, 2005. Version 1. Checksum: 8E8F6E4089E4F28E	FASTA	143	15,997
	10 20 30 40 50 60 MDQTLSDFGN VFVFLLLGVV FVAGGYLTAR MLRPSRPNPV KNSTYECGEE AVGSSWVKFN 70 80 90 100 110 120 IRFYVVALIF IIFDVEVVFL FPWATVFRQL GSFALIEALV FAGILILGLV YAWVKGDLDW 130 140 VRPTPSVPKM PEMPSPRQSA GRD

References

[1]

"Complete sequence of Pelodictyon luteolum DSM 273." Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T., Hammon N., Israni S., Pitluck S., Bryant D., Schmutz J., Larimer F., Land M., Kyrpides N., Ivanova N., Richardson P. Submitted (AUG-2005) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: DSM 273.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000096 Genomic DNA. Translation: ABB23618.1.
RefSeq	YP_374661.1. NC_007512.1.
3D structure databases
ModBase	Search...
Protein-protein interaction databases
STRING	Q3B4W3.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	3746071.
GenomeReviews	Gene locus Plut_0743 in contig CP000096_GR.
KEGG	plt:Plut_0743.
NMPDR	fig|319225.3.peg.881.
PATRIC	21379022. VBIChlLut1287_0780.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG0838.
HOGENOM	HBG605540.
OMA	VKFNIRF.
PhylomeDB	Q3B4W3.
ProtClustDB	CLSK637458.
Enzyme and pathway databases
BioCyc	PLUT319225:PLUT_0743-MONOMER.
Family and domain databases
HAMAP	MF_01394. NDH1_NuoA. [Tree]
InterPro	IPR023043. NAD(P)H_OxRDtase_bac/plastid. IPR000440. NADH_UbQ/plastoQ_OxRdtase_su3. [Graphical view]
KO	K00330.
PANTHER	PTHR11058. Oxidored_q4. 1 hit.
Pfam	PF00507. Oxidored_q4. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

NUOA_PELLD

Accession

Primary (citable) accession number: Q3B4W3

Entry history

Integrated into UniProtKB/Swiss-Prot:	February 10, 2009
Last sequence update:	November 22, 2005
Last modified:	January 25, 2012
This is version 41 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program