ID   NUOB_WOLPM              Reviewed;         168 AA.
AC   Q73G42;
DT   16-DEC-2008, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2004, sequence version 1.
DT   03-AUG-2022, entry version 107.
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=WD_1123;
OS   Wolbachia pipientis wMel.
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rickettsiales;
OC   Anaplasmataceae; Wolbachieae; Wolbachia; unclassified Wolbachia.
OX   NCBI_TaxID=163164;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=15024419; DOI=10.1371/journal.pbio.0020069;
RA   Wu M., Sun L.V., Vamathevan J.J., Riegler M., DeBoy R.T., Brownlie J.C.,
RA   McGraw E.A., Martin W., Esser C., Ahmadinejad N., Wiegand C., Madupu R.,
RA   Beanan M.J., Brinkac L.M., Daugherty S.C., Durkin A.S., Kolonay J.F.,
RA   Nelson W.C., Mohamoud Y., Lee P., Berry K.J., Young M.B., Utterback T.R.,
RA   Weidman J.F., Nierman W.C., Paulsen I.T., Nelson K.E., Tettelin H.,
RA   O'Neill S.L., Eisen J.A.;
RT   "Phylogenomics of the reproductive parasite Wolbachia pipientis wMel: a
RT   streamlined genome overrun by mobile genetic elements.";
RL   PLoS Biol. 2:327-341(2004).
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 membrane {ECO:0000255|HAMAP-Rule:MF_01356};
CC       Peripheral membrane protein {ECO:0000255|HAMAP-Rule:MF_01356};
CC       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; AE017196; AAS14776.1; -; Genomic_DNA.
DR   RefSeq; WP_006279574.1; NC_002978.6.
DR   AlphaFoldDB; Q73G42; -.
DR   SMR; Q73G42; -.
DR   STRING; 163164.WD_1123; -.
DR   EnsemblBacteria; AAS14776; AAS14776; WD_1123.
DR   GeneID; 29554875; -.
DR   KEGG; wol:WD_1123; -.
DR   eggNOG; COG0377; Bacteria.
DR   OMA; GPYWEHG; -.
DR   OrthoDB; 1904620at2; -.
DR   Proteomes; UP000008215; 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 membrane; Iron; Iron-sulfur; Membrane; Metal-binding; NAD;
KW   Quinone; Translocase; Transport; Ubiquinone.
FT   CHAIN           1..168
FT                   /note="NADH-quinone oxidoreductase subunit B"
FT                   /id="PRO_0000358507"
FT   BINDING         49
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
FT   BINDING         50
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
FT   BINDING         114
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
FT   BINDING         144
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
SQ   SEQUENCE   168 AA;  18821 MW;  B276DF5682C1CC8C CRC64;
     MTNQILSNDD WGRYKKEGFL VTKFGDLTDY VMNWARSGSL WPMTFGLACC AVEMMHTASS
     RYDLDRYGIM FRASPRQSDV MIVAGTLTNK MAAALRKVYD QMADPKYVIS MGSCANGGGY
     YHYSYSVVRG CDRIVPVDVY VPGCPPTAEA LLYGMLCLQN KIKRTRNG