NUOB_ORITI
ID NUOB_ORITI Reviewed; 171 AA.
AC B3CSG9;
DT 16-DEC-2008, integrated into UniProtKB/Swiss-Prot.
DT 22-JUL-2008, sequence version 1.
DT 03-AUG-2022, entry version 74.
DE RecName: Full=NADH-quinone oxidoreductase subunit B {ECO:0000255|HAMAP-Rule:MF_01356};
DE EC=7.1.1.- {ECO:0000255|HAMAP-Rule:MF_01356};
DE AltName: Full=NADH dehydrogenase I subunit B {ECO:0000255|HAMAP-Rule:MF_01356};
DE AltName: Full=NDH-1 subunit B {ECO:0000255|HAMAP-Rule:MF_01356};
GN Name=nuoB {ECO:0000255|HAMAP-Rule:MF_01356}; OrderedLocusNames=OTT_0912;
OS Orientia tsutsugamushi (strain Ikeda) (Rickettsia tsutsugamushi).
OC Bacteria; Proteobacteria; Alphaproteobacteria; Rickettsiales;
OC Rickettsiaceae; Rickettsieae; Orientia.
OX NCBI_TaxID=334380;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Ikeda;
RX PubMed=18508905; DOI=10.1093/dnares/dsn011;
RA Nakayama K., Yamashita A., Kurokawa K., Morimoto T., Ogawa M., Fukuhara M.,
RA Urakami H., Ohnishi M., Uchiyama I., Ogura Y., Ooka T., Oshima K.,
RA Tamura A., Hattori M., Hayashi T.;
RT "The whole-genome sequencing of the obligate intracellular bacterium
RT Orientia tsutsugamushi revealed massive gene amplification during reductive
RT genome evolution.";
RL DNA Res. 15:185-199(2008).
CC -!- FUNCTION: NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur
CC (Fe-S) centers, to quinones in the respiratory chain. Couples the redox
CC reaction to proton translocation (for every two electrons transferred,
CC four hydrogen ions are translocated across the cytoplasmic membrane),
CC and thus conserves the redox energy in a proton gradient (By
CC similarity). {ECO:0000250}.
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_01356};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01356};
CC Note=Binds 1 [4Fe-4S] cluster. {ECO:0000255|HAMAP-Rule:MF_01356};
CC -!- SUBUNIT: NDH-1 is composed of 14 different subunits. Subunits NuoB, C,
CC D, E, F, and G constitute the peripheral sector of the complex.
CC {ECO:0000255|HAMAP-Rule:MF_01356}.
CC -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC Rule:MF_01356}; Peripheral membrane protein {ECO:0000255|HAMAP-
CC Rule:MF_01356}; Cytoplasmic side {ECO:0000255|HAMAP-Rule:MF_01356}.
CC -!- SIMILARITY: Belongs to the complex I 20 kDa subunit family.
CC {ECO:0000255|HAMAP-Rule:MF_01356}.
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DR EMBL; AP008981; BAG40370.1; -; Genomic_DNA.
DR RefSeq; WP_011944977.1; NC_010793.1.
DR AlphaFoldDB; B3CSG9; -.
DR SMR; B3CSG9; -.
DR EnsemblBacteria; BAG40370; BAG40370; OTT_0912.
DR GeneID; 66652967; -.
DR KEGG; ott:OTT_0912; -.
DR HOGENOM; CLU_055737_7_0_5; -.
DR OMA; AGWVRKS; -.
DR OrthoDB; 1904620at2; -.
DR Proteomes; UP000001033; Chromosome.
DR GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR GO; GO:0005506; F:iron ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0008137; F:NADH dehydrogenase (ubiquinone) activity; IEA:InterPro.
DR GO; GO:0048038; F:quinone binding; IEA:UniProtKB-KW.
DR HAMAP; MF_01356; NDH1_NuoB; 1.
DR InterPro; IPR006137; NADH_UbQ_OxRdtase-like_20kDa.
DR InterPro; IPR006138; NADH_UQ_OxRdtase_20Kd_su.
DR Pfam; PF01058; Oxidored_q6; 1.
DR TIGRFAMs; TIGR01957; nuoB_fam; 1.
DR PROSITE; PS01150; COMPLEX1_20K; 1.
PE 3: Inferred from homology;
KW 4Fe-4S; Cell inner membrane; Cell membrane; Iron; Iron-sulfur; Membrane;
KW Metal-binding; NAD; Quinone; Translocase; Transport; Ubiquinone.
FT CHAIN 1..171
FT /note="NADH-quinone oxidoreductase subunit B"
FT /id="PRO_0000358440"
FT BINDING 48
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
FT BINDING 49
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
FT BINDING 113
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
FT BINDING 143
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
SQ SEQUENCE 171 AA; 19330 MW; DC1F8F5E1F842766 CRC64;
MSENTFSDTT SIYNQNLSNQ GFILANLENL VSWARTRSLW PMTFGLACCA IEMMQTAGSR
YDMDRYGMLF RPSPRQADVM IVAGTLTNKM APALRRVYDQ MTEPKWVISM GSCANGGGYY
HYSYSVVRGC DKIVPVDIYV PGCPPTPEAL LYGILQLQKK INRTQQVKFK R
