ID   NUOK_GEOSW              Reviewed;         104 AA.
AC   C5D981;
DT   15-DEC-2009, integrated into UniProtKB/Swiss-Prot.
DT   28-JUL-2009, sequence version 1.
DT   25-MAY-2022, entry version 62.
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=GWCH70_3294;
OS   Geobacillus sp. (strain WCH70).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Geobacillus;
OC   unclassified Geobacillus.
OX   NCBI_TaxID=471223;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=WCH70;
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., Chertkov O., Brettin T., Detter J.C.,
RA   Han C., Larimer F., Land M., Hauser L., Kyrpides N., Mikhailova N.,
RA   Brumm P., Mead D.A., Richardson P.;
RT   "Complete sequence of chromosome of Geopacillus sp. WCH70.";
RL   Submitted (JUN-2009) 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_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 membrane {ECO:0000255|HAMAP-Rule:MF_01456};
CC       Multi-pass membrane protein {ECO:0000255|HAMAP-Rule:MF_01456}.
CC   -!- SIMILARITY: Belongs to the complex I subunit 4L family.
CC       {ECO:0000255|HAMAP-Rule:MF_01456}.
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DR   EMBL; CP001638; ACS25934.1; -; Genomic_DNA.
DR   RefSeq; WP_015865301.1; NC_012793.1.
DR   AlphaFoldDB; C5D981; -.
DR   SMR; C5D981; -.
DR   STRING; 471223.GWCH70_3294; -.
DR   EnsemblBacteria; ACS25934; ACS25934; GWCH70_3294.
DR   KEGG; gwc:GWCH70_3294; -.
DR   eggNOG; COG0713; Bacteria.
DR   HOGENOM; CLU_144724_0_0_9; -.
DR   OMA; NFVAFSY; -.
DR   OrthoDB; 2081663at2; -.
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 membrane; Membrane; NAD; Quinone; Translocase; Transmembrane;
KW   Transmembrane helix; Transport.
FT   CHAIN           1..104
FT                   /note="NADH-quinone oxidoreductase subunit K"
FT                   /id="PRO_5000470194"
FT   TRANSMEM        4..24
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        64..84
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01456"
SQ   SEQUENCE   104 AA;  11203 MW;  25206C95AD8289DE CRC64;
     MSSVPLSVYL VLALILFCIG LYGALTKRNT VIVLICIELM LNAVNINLVA FAKYGAHPGI
     AGQIFALFTI TVAAAEAAVG LAILMALYRN RKTVHIDEID SMKH