ID   NUOA_FLAPJ              Reviewed;         121 AA.
AC   A6H1R4;
DT   10-FEB-2009, integrated into UniProtKB/Swiss-Prot.
DT   24-JUL-2007, sequence version 1.
DT   03-AUG-2022, entry version 81.
DE   RecName: Full=NADH-quinone oxidoreductase subunit A {ECO:0000255|HAMAP-Rule:MF_01394};
DE            EC=7.1.1.- {ECO:0000255|HAMAP-Rule:MF_01394};
DE   AltName: Full=NADH dehydrogenase I subunit A {ECO:0000255|HAMAP-Rule:MF_01394};
DE   AltName: Full=NDH-1 subunit A {ECO:0000255|HAMAP-Rule:MF_01394};
DE   AltName: Full=NUO1 {ECO:0000255|HAMAP-Rule:MF_01394};
GN   Name=nuoA {ECO:0000255|HAMAP-Rule:MF_01394}; OrderedLocusNames=FP2232;
OS   Flavobacterium psychrophilum (strain ATCC 49511 / DSM 21280 / CIP 103535 /
OS   JIP02/86).
OC   Bacteria; Bacteroidetes; Flavobacteriia; Flavobacteriales;
OC   Flavobacteriaceae; Flavobacterium.
OX   NCBI_TaxID=402612;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 49511 / DSM 21280 / CIP 103535 / JIP02/86;
RX   PubMed=17592475; DOI=10.1038/nbt1313;
RA   Duchaud E., Boussaha M., Loux V., Bernardet J.-F., Michel C., Kerouault B.,
RA   Mondot S., Nicolas P., Bossy R., Caron C., Bessieres P., Gibrat J.-F.,
RA   Claverol S., Dumetz F., Le Henaff M., Benmansour A.;
RT   "Complete genome sequence of the fish pathogen Flavobacterium
RT   psychrophilum.";
RL   Nat. Biotechnol. 25:763-769(2007).
CC   -!- FUNCTION: NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur
CC       (Fe-S) centers, to quinones in the respiratory chain. The immediate
CC       electron acceptor for the enzyme in this species is believed to be a
CC       menaquinone. Couples the redox reaction to proton translocation (for
CC       every two electrons transferred, four hydrogen ions are translocated
CC       across the cytoplasmic membrane), and thus conserves the redox energy
CC       in a proton gradient. {ECO:0000255|HAMAP-Rule:MF_01394}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a quinone + 5 H(+)(in) + NADH = a quinol + 4 H(+)(out) +
CC         NAD(+); Xref=Rhea:RHEA:57888, ChEBI:CHEBI:15378, ChEBI:CHEBI:24646,
CC         ChEBI:CHEBI:57540, ChEBI:CHEBI:57945, ChEBI:CHEBI:132124;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01394};
CC   -!- SUBUNIT: NDH-1 is composed of 14 different subunits. Subunits NuoA, H,
CC       J, K, L, M, N constitute the membrane sector of the complex.
CC       {ECO:0000255|HAMAP-Rule:MF_01394}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_01394}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_01394}.
CC   -!- SIMILARITY: Belongs to the complex I subunit 3 family.
CC       {ECO:0000255|HAMAP-Rule:MF_01394}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; AM398681; CAL44288.1; -; Genomic_DNA.
DR   RefSeq; WP_011964322.1; NC_009613.3.
DR   RefSeq; YP_001297089.1; NC_009613.3.
DR   AlphaFoldDB; A6H1R4; -.
DR   SMR; A6H1R4; -.
DR   STRING; 402612.FP2232; -.
DR   EnsemblBacteria; CAL44288; CAL44288; FP2232.
DR   GeneID; 66553336; -.
DR   KEGG; fps:FP2232; -.
DR   PATRIC; fig|402612.5.peg.2282; -.
DR   eggNOG; COG0838; Bacteria.
DR   HOGENOM; CLU_119549_0_2_10; -.
DR   OMA; RFPVKYY; -.
DR   Proteomes; UP000006394; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0008137; F:NADH dehydrogenase (ubiquinone) activity; IEA:InterPro.
DR   GO; GO:0048038; F:quinone binding; IEA:UniProtKB-KW.
DR   Gene3D; 1.20.58.1610; -; 1.
DR   HAMAP; MF_01394; NDH1_NuoA; 1.
DR   InterPro; IPR023043; NAD(P)H_OxRDtase_bac/plastid.
DR   InterPro; IPR000440; NADH_UbQ/plastoQ_OxRdtase_su3.
DR   InterPro; IPR038430; NDAH_ubi_oxred_su3_sf.
DR   PANTHER; PTHR11058; PTHR11058; 1.
DR   Pfam; PF00507; Oxidored_q4; 1.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Membrane; NAD; Quinone;
KW   Reference proteome; Translocase; Transmembrane; Transmembrane helix;
KW   Transport.
FT   CHAIN           1..121
FT                   /note="NADH-quinone oxidoreductase subunit A"
FT                   /id="PRO_0000362686"
FT   TRANSMEM        8..28
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01394"
FT   TRANSMEM        65..85
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01394"
FT   TRANSMEM        93..113
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01394"
SQ   SEQUENCE   121 AA;  13804 MW;  3217ED8CFE090AEE CRC64;
     MQSNQLDYLP IFMQMGLAVG FVVLTIIGSS FLGPKRSSVN KDKNFESGIE SIGNARVPFS
     VKYFLVAILF VLFDVEVIFL YPWAINFQEL GMQGMIKMVI FMSLLLVGFF YIIKKKALEW
     D