ID   NUOK_BRUO2              Reviewed;         102 AA.
AC   A5VPZ3;
DT   15-DEC-2009, integrated into UniProtKB/Swiss-Prot.
DT   15-DEC-2009, sequence version 2.
DT   25-MAY-2022, entry version 72.
DE   RecName: Full=NADH-quinone oxidoreductase subunit K {ECO:0000255|HAMAP-Rule:MF_01456};
DE            EC=7.1.1.- {ECO:0000255|HAMAP-Rule:MF_01456};
DE   AltName: Full=NADH dehydrogenase I subunit K {ECO:0000255|HAMAP-Rule:MF_01456};
DE   AltName: Full=NDH-1 subunit K {ECO:0000255|HAMAP-Rule:MF_01456};
GN   Name=nuoK {ECO:0000255|HAMAP-Rule:MF_01456}; OrderedLocusNames=BOV_0807;
OS   Brucella ovis (strain ATCC 25840 / 63/290 / NCTC 10512).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Brucellaceae; Brucella/Ochrobactrum group; Brucella.
OX   NCBI_TaxID=444178;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 25840 / 63/290 / NCTC 10512;
RX   PubMed=19436743; DOI=10.1371/journal.pone.0005519;
RA   Tsolis R.M., Seshadri R., Santos R.L., Sangari F.J., Lobo J.M.,
RA   de Jong M.F., Ren Q., Myers G., Brinkac L.M., Nelson W.C., Deboy R.T.,
RA   Angiuoli S., Khouri H., Dimitrov G., Robinson J.R., Mulligan S.,
RA   Walker R.L., Elzer P.E., Hassan K.A., Paulsen I.T.;
RT   "Genome degradation in Brucella ovis corresponds with narrowing of its host
RT   range and tissue tropism.";
RL   PLoS ONE 4:E5519-E5519(2009).
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
CC       ubiquinone. 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_01456}.
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_01456};
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_01456}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_01456}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_01456}.
CC   -!- SIMILARITY: Belongs to the complex I subunit 4L family.
CC       {ECO:0000255|HAMAP-Rule:MF_01456}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=ABQ61111.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; CP000708; ABQ61111.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; WP_002963947.1; NC_009505.1.
DR   AlphaFoldDB; A5VPZ3; -.
DR   SMR; A5VPZ3; -.
DR   EnsemblBacteria; ABQ61111; ABQ61111; BOV_0807.
DR   GeneID; 45124246; -.
DR   GeneID; 55590524; -.
DR   KEGG; bov:BOV_0807; -.
DR   HOGENOM; CLU_144724_0_0_5; -.
DR   PhylomeDB; A5VPZ3; -.
DR   Proteomes; UP000006383; Chromosome I.
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:0050136; F:NADH dehydrogenase (quinone) activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0048038; F:quinone binding; IEA:UniProtKB-KW.
DR   GO; GO:0042773; P:ATP synthesis coupled electron transport; IEA:InterPro.
DR   HAMAP; MF_01456; NDH1_NuoK; 1.
DR   InterPro; IPR001133; NADH_UbQ_OxRdtase_chain4L/K.
DR   InterPro; IPR039428; NUOK/Mnh_C1-like.
DR   PANTHER; PTHR11434; PTHR11434; 1.
DR   Pfam; PF00420; Oxidored_q2; 1.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Membrane; NAD; Quinone; Translocase;
KW   Transmembrane; Transmembrane helix; Transport; Ubiquinone.
FT   CHAIN           1..102
FT                   /note="NADH-quinone oxidoreductase subunit K"
FT                   /id="PRO_0000389976"
FT   TRANSMEM        5..25
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01456"
FT   TRANSMEM        31..51
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01456"
FT   TRANSMEM        66..86
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01456"
SQ   SEQUENCE   102 AA;  10942 MW;  E3EC572231BD3204 CRC64;
     MEIGIAHYLT VSAILFTLGV FGIFLNRKNV IVILMSIELI LLSVNLNFVA FSSQLGDLVG
     QVFALFVLTV AAAEAAIGLA ILVVFFRNRG SIAVEDVNVM KG