ID   NUOK_THERP              Reviewed;         102 AA.
AC   B9L175;
DT   15-DEC-2009, integrated into UniProtKB/Swiss-Prot.
DT   24-MAR-2009, 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}; OrderedLocusNames=trd_1786;
OS   Thermomicrobium roseum (strain ATCC 27502 / DSM 5159 / P-2).
OC   Bacteria; Chloroflexi; Thermomicrobiales; Thermomicrobiaceae;
OC   Thermomicrobium.
OX   NCBI_TaxID=309801;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 27502 / DSM 5159 / P-2;
RX   PubMed=19148287; DOI=10.1371/journal.pone.0004207;
RA   Wu D., Raymond J., Wu M., Chatterji S., Ren Q., Graham J.E., Bryant D.A.,
RA   Robb F., Colman A., Tallon L.J., Badger J.H., Madupu R., Ward N.L.,
RA   Eisen J.A.;
RT   "Complete genome sequence of the aerobic CO-oxidizing thermophile
RT   Thermomicrobium roseum.";
RL   PLoS ONE 4:E4207-E4207(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 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}.
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; CP001275; ACM06084.1; -; Genomic_DNA.
DR   RefSeq; WP_015922728.1; NC_011959.1.
DR   AlphaFoldDB; B9L175; -.
DR   SMR; B9L175; -.
DR   STRING; 309801.trd_1786; -.
DR   EnsemblBacteria; ACM06084; ACM06084; trd_1786.
DR   KEGG; tro:trd_1786; -.
DR   eggNOG; COG0713; Bacteria.
DR   HOGENOM; CLU_144724_1_1_0; -.
DR   OMA; MMLIGIE; -.
DR   OrthoDB; 2081663at2; -.
DR   Proteomes; UP000000447; 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: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; Ubiquinone.
FT   CHAIN           1..102
FT                   /note="NADH-quinone oxidoreductase subunit K"
FT                   /id="PRO_0000390264"
FT   TRANSMEM        6..26
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        62..82
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01456"
SQ   SEQUENCE   102 AA;  11186 MW;  3F5A76ACB3B76BD8 CRC64;
     MSELSATHFL LLSAALFIIG MVGVLTRRNV LVIFMCIELM LNAVNVSLIG FAWELHQLTG
     QVFALFVIAI AAAEAVVGLG IVMALTRRTD TVDIDELRQL RE