NUOK_METML
ID NUOK_METML Reviewed; 101 AA.
AC C6WX51;
DT 15-DEC-2009, integrated into UniProtKB/Swiss-Prot.
DT 22-SEP-2009, sequence version 1.
DT 25-MAY-2022, entry version 60.
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=Mmol_1596;
OS Methylotenera mobilis (strain JLW8 / ATCC BAA-1282 / DSM 17540).
OC Bacteria; Proteobacteria; Betaproteobacteria; Nitrosomonadales;
OC Methylophilaceae; Methylotenera.
OX NCBI_TaxID=583345;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=JLW8 / ATCC BAA-1282 / DSM 17540;
RG US DOE Joint Genome Institute;
RA Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Tice H., Bruce D.,
RA Goodwin L., Pitluck S., LaButti K.M., Clum A., Larimer F., Land M.,
RA Hauser L., Kyrpides N., Mikhailova N., Kayluzhnaya M., Chistoserdova L.;
RT "Complete sequence of Methylotenera mobilis JLW8.";
RL Submitted (JUL-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
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; CP001672; ACT48500.1; -; Genomic_DNA.
DR RefSeq; WP_015832535.1; NC_012968.1.
DR AlphaFoldDB; C6WX51; -.
DR SMR; C6WX51; -.
DR STRING; 583345.Mmol_1596; -.
DR EnsemblBacteria; ACT48500; ACT48500; Mmol_1596.
DR KEGG; mmb:Mmol_1596; -.
DR eggNOG; COG0713; Bacteria.
DR HOGENOM; CLU_144724_2_0_4; -.
DR OMA; NFVAFSY; -.
DR OrthoDB; 2081663at2; -.
DR Proteomes; UP000002742; 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 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_0000390122"
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; 11049 MW; 522FF39C0C87502D CRC64;
MVGLSHYLIL GSLLFAISVI GIFLNRKNVI ILLMAIELML LAVNLNFIAF SHYLNDVAGQ
VFVFFILTVA AAESAIGLAI LVVLFRNLRT INVDDLDSLK G