Q89AU6 (NUOA_BUCBP) 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:	bbp_143

Organism

Buchnera aphidicola subsp. Baizongia pistaciae (strain Bp) [Complete proteome] [HAMAP]

Taxonomic identifier

224915 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Gammaproteobacteria › Enterobacteriales › Enterobacteriaceae › Buchnera

Protein attributes

Sequence length	132 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 ubiquinone. 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 13 different subunits. Subunits NuoA, H, J, K, L, M, N constitute the membrane sector of the complex By similarity.
Subcellular location	Cell 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 membrane Membrane
Domain	Transmembrane Transmembrane helix
Ligand	NAD Ubiquinone
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 – 132	132	NADH-quinone oxidoreductase subunit A HAMAP MF_01394		PRO_0000117868
Regions
	Transmembrane	14 – 34	21	Helical; Potential
	Transmembrane	66 – 86	21	Helical; Potential
	Transmembrane	96 – 116	21	Helical; Potential

Sequences

	Sequence		Length	Mass (Da)
	Q89AU6 [UniParc]. Last modified June 1, 2003. Version 1. Checksum: 3A8CA3AAB13363B7	FASTA	132	15,109
	10 20 30 40 50 60 MLKSSVIAAQ YWAFFTFFFI AVSICVFMLS ISWILGGRSS SRYKNTPFES GIVPTNTTNM 70 80 90 100 110 120 YCSVKFYLVA IYFVLFDVEA LYLYAWSVSI VECGWIGFIE ALIFILFLLS GLIYLISSKL 130 LVWKSKNNIH VT

References

[1]

"Reductive genome evolution in Buchnera aphidicola." van Ham R.C.H.J., Kamerbeek J., Palacios C., Rausell C., Abascal F., Bastolla U., Fernandez J.M., Jimenez L., Postigo M., Silva F.J., Tamames J., Viguera E., Latorre A., Valencia A., Moran F., Moya A. Proc. Natl. Acad. Sci. U.S.A. 100:581-586(2003) [PubMed: 12522265] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: Bp.

Cross-references

Sequence databases
EMBL GenBank DDBJ	AE016826 Genomic DNA. Translation: AAO26877.1.
RefSeq	NP_777772.1. NC_004545.1.
3D structure databases
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
EnsemblBacteria	EBBUCT00000002490; EBBUCP00000002314; EBBUCG00000002490.
GeneID	1058564.
GenomeReviews	Gene locus bbp_143 in contig AE016826_GR.
KEGG	bab:bbp143.
PATRIC	21245065. VBIBucAph80364_0139.
Organism-specific databases
CMR	Search...
Phylogenomic databases
GeneTree	EBGT00050000008167.
HOGENOM	HBG605540.
OMA	FIEATIF.
PhylomeDB	Q89AU6.
ProtClustDB	CLSK315571.
Enzyme and pathway databases
BioCyc	BAPH224915:BBP_143-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_BUCBP

Accession

Primary (citable) accession number: Q89AU6

Entry history

Integrated into UniProtKB/Swiss-Prot:	November 14, 2003
Last sequence update:	June 1, 2003
Last modified:	January 25, 2012
This is version 60 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program