ID   NUOB_RHOOB              Reviewed;         184 AA.
AC   C1AYM4;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   26-MAY-2009, sequence version 1.
DT   03-AUG-2022, entry version 84.
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=ROP_59720;
OS   Rhodococcus opacus (strain B4).
OC   Bacteria; Actinobacteria; Corynebacteriales; Nocardiaceae; Rhodococcus.
OX   NCBI_TaxID=632772;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=B4;
RA   Takarada H., Sekine M., Hosoyama A., Yamada R., Fujisawa T., Omata S.,
RA   Shimizu A., Tsukatani N., Tanikawa S., Fujita N., Harayama S.;
RT   "Comparison of the complete genome sequences of Rhodococcus erythropolis
RT   PR4 and Rhodococcus opacus B4.";
RL   Submitted (MAR-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 a
CC       menaquinone. 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_01356}.
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; AP011115; BAH54219.1; -; Genomic_DNA.
DR   RefSeq; WP_015889710.1; NC_012522.1.
DR   AlphaFoldDB; C1AYM4; -.
DR   SMR; C1AYM4; -.
DR   STRING; 632772.ROP_59720; -.
DR   EnsemblBacteria; BAH54219; BAH54219; ROP_59720.
DR   KEGG; rop:ROP_59720; -.
DR   PATRIC; fig|632772.20.peg.6238; -.
DR   HOGENOM; CLU_055737_7_3_11; -.
DR   OMA; AGWVRKS; -.
DR   OrthoDB; 1904620at2; -.
DR   Proteomes; UP000002212; 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.
FT   CHAIN           1..184
FT                   /note="NADH-quinone oxidoreductase subunit B"
FT                   /id="PRO_1000166662"
FT   BINDING         37
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
FT   BINDING         38
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
FT   BINDING         103
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
FT   BINDING         132
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
SQ   SEQUENCE   184 AA;  19945 MW;  6B748377C556FA63 CRC64;
     MGIEEKLPSG FLLTTVEGLA GYVRKGSLWP ASFGLACCAI EMMATAGGRF DIARFGMEAF
     RASPRQADLM IVAGRVSQKM APVLRQIYDQ MVEPKWVLAM GVCASSGGMF NNYAIVQGVD
     HIVPVDIYLP GCPPRPEMLL NAILTLHEKI QQMPLGVHRD EVARAAEQAA LAATPTIQMK
     GLLR