ID   NUOA_PELPB              Reviewed;         143 AA.
AC   B4SBZ3;
DT   10-FEB-2009, integrated into UniProtKB/Swiss-Prot.
DT   23-SEP-2008, sequence version 1.
DT   25-MAY-2022, entry version 71.
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=Ppha_1873;
OS   Pelodictyon phaeoclathratiforme (strain DSM 5477 / BU-1).
OC   Bacteria; Chlorobi; Chlorobia; Chlorobiales; Chlorobiaceae;
OC   Chlorobium/Pelodictyon group; Pelodictyon.
OX   NCBI_TaxID=324925;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 5477 / BU-1;
RG   US DOE Joint Genome Institute;
RA   Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA   Bruce D., Goodwin L., Pitluck S., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Kyrpides N., Mikhailova N., Liu Z., Li T., Zhao F., Overmann J.,
RA   Bryant D.A., Richardson P.;
RT   "Complete sequence of Pelodictyon phaeoclathratiforme BU-1.";
RL   Submitted (JUN-2008) to the EMBL/GenBank/DDBJ databases.
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}.
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DR   EMBL; CP001110; ACF44099.1; -; Genomic_DNA.
DR   RefSeq; WP_012508583.1; NC_011060.1.
DR   AlphaFoldDB; B4SBZ3; -.
DR   SMR; B4SBZ3; -.
DR   STRING; 324925.Ppha_1873; -.
DR   EnsemblBacteria; ACF44099; ACF44099; Ppha_1873.
DR   KEGG; pph:Ppha_1873; -.
DR   eggNOG; COG0838; Bacteria.
DR   HOGENOM; CLU_119549_1_0_10; -.
DR   OMA; IEMLGFV; -.
DR   OrthoDB; 1748431at2; -.
DR   Proteomes; UP000002724; 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..143
FT                   /note="NADH-quinone oxidoreductase subunit A"
FT                   /id="PRO_0000362713"
FT   TRANSMEM        8..28
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01394"
FT   TRANSMEM        63..83
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   143 AA;  15770 MW;  877E34CD7AE17D0D CRC64;
     MDQTLSNFGN VFAFLALGVV FVAGGYLTAR MLRPSRPNPA KNSTYECGEE AVGSAWVKFN
     IRFYVVALIF IIFDVEVVFL YPWATVFKQL GEFALIEALV FAGILVLGLA YAWVKGDLDW
     VRPTPNIPKM PEMPSGKSGA LRG