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NUOK_HYDS0
ID   NUOK_HYDS0              Reviewed;         110 AA.
AC   B4U8I7;
DT   15-DEC-2009, integrated into UniProtKB/Swiss-Prot.
DT   23-SEP-2008, sequence version 1.
DT   25-MAY-2022, entry version 64.
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};
GN   OrderedLocusNames=HY04AAS1_0761;
OS   Hydrogenobaculum sp. (strain Y04AAS1).
OC   Bacteria; Aquificae; Aquificales; Aquificaceae; Hydrogenobaculum;
OC   unclassified Hydrogenobaculum.
OX   NCBI_TaxID=380749;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Y04AAS1;
RX   PubMed=19136599; DOI=10.1128/jb.01645-08;
RA   Reysenbach A.-L., Hamamura N., Podar M., Griffiths E., Ferreira S.,
RA   Hochstein R., Heidelberg J., Johnson J., Mead D., Pohorille A.,
RA   Sarmiento M., Schweighofer K., Seshadri R., Voytek M.A.;
RT   "Complete and draft genome sequences of six members of the Aquificales.";
RL   J. Bacteriol. 191:1992-1993(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}.
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DR   EMBL; CP001130; ACG57448.1; -; Genomic_DNA.
DR   RefSeq; WP_012513804.1; NC_011126.1.
DR   AlphaFoldDB; B4U8I7; -.
DR   SMR; B4U8I7; -.
DR   STRING; 380749.HY04AAS1_0761; -.
DR   EnsemblBacteria; ACG57448; ACG57448; HY04AAS1_0761.
DR   KEGG; hya:HY04AAS1_0761; -.
DR   eggNOG; COG0713; Bacteria.
DR   HOGENOM; CLU_144724_1_1_0; -.
DR   OMA; FDVWLSR; -.
DR   OrthoDB; 2036866at2; -.
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..110
FT                   /note="NADH-quinone oxidoreductase subunit K"
FT                   /id="PRO_0000390099"
FT   TRANSMEM        14..34
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01456"
FT   TRANSMEM        39..59
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01456"
FT   TRANSMEM        70..90
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01456"
SQ   SEQUENCE   110 AA;  12017 MW;  7DA4DB89927C0B40 CRC64;
     MIETIASKLL VQNVSQYFIL SFILLGIGLF GMMVRKNLIT ILMSLELALN SVNIAFVGID
     RLNHLIDGEI FALFTIALAA AEAAVGLGII LSLFRLRKAE NVNEIIDLKG
 
 
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