NUOK_COXBU
ID NUOK_COXBU Reviewed; 101 AA.
AC Q83BR5;
DT 15-DEC-2009, integrated into UniProtKB/Swiss-Prot.
DT 01-JUN-2003, sequence version 1.
DT 03-AUG-2022, entry version 113.
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=CBU_1438;
OS Coxiella burnetii (strain RSA 493 / Nine Mile phase I).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Legionellales; Coxiellaceae;
OC Coxiella.
OX NCBI_TaxID=227377;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=RSA 493 / Nine Mile phase I;
RX PubMed=12704232; DOI=10.1073/pnas.0931379100;
RA Seshadri R., Paulsen I.T., Eisen J.A., Read T.D., Nelson K.E., Nelson W.C.,
RA Ward N.L., Tettelin H., Davidsen T.M., Beanan M.J., DeBoy R.T.,
RA Daugherty S.C., Brinkac L.M., Madupu R., Dodson R.J., Khouri H.M.,
RA Lee K.H., Carty H.A., Scanlan D., Heinzen R.A., Thompson H.A., Samuel J.E.,
RA Fraser C.M., Heidelberg J.F.;
RT "Complete genome sequence of the Q-fever pathogen, Coxiella burnetii.";
RL Proc. Natl. Acad. Sci. U.S.A. 100:5455-5460(2003).
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; AE016828; AAO90935.1; -; Genomic_DNA.
DR RefSeq; NP_820421.1; NC_002971.3.
DR RefSeq; WP_005769056.1; NZ_CDBG01000001.1.
DR AlphaFoldDB; Q83BR5; -.
DR SMR; Q83BR5; -.
DR STRING; 227377.CBU_1438; -.
DR EnsemblBacteria; AAO90935; AAO90935; CBU_1438.
DR GeneID; 1209345; -.
DR KEGG; cbu:CBU_1438; -.
DR PATRIC; fig|227377.7.peg.1437; -.
DR eggNOG; COG0713; Bacteria.
DR HOGENOM; CLU_144724_2_0_6; -.
DR OMA; NFVAFSY; -.
DR Proteomes; UP000002671; Chromosome.
DR GO; GO:0045272; C:plasma membrane respiratory chain complex I; IBA:GO_Central.
DR GO; GO:0008137; F:NADH dehydrogenase (ubiquinone) activity; IBA:GO_Central.
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;
KW Reference proteome; Translocase; Transmembrane; Transmembrane helix;
KW Transport; Ubiquinone.
FT CHAIN 1..101
FT /note="NADH-quinone oxidoreductase subunit K"
FT /id="PRO_0000390018"
FT TRANSMEM 4..24
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01456"
FT TRANSMEM 30..50
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01456"
FT TRANSMEM 61..81
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01456"
SQ SEQUENCE 101 AA; 11056 MW; AD38F0237C402304 CRC64;
MIPLGYFLII GAILFGLGFA GIIINRKNLI VLLMCIELML LAVNTNFIAF SQYLGARAGE
IFVFFILTVA AAESAIGLAI LVLFYRRRGS INVDDMNILK G
