ID   NUOB1_SALAI             Reviewed;         188 AA.
AC   A8M069;
DT   26-MAY-2009, integrated into UniProtKB/Swiss-Prot.
DT   04-DEC-2007, sequence version 1.
DT   03-AUG-2022, entry version 83.
DE   RecName: Full=NADH-quinone oxidoreductase subunit B 1;
DE            EC=7.1.1.-;
DE   AltName: Full=NADH dehydrogenase I subunit B 1;
DE   AltName: Full=NDH-1 subunit B 1;
GN   Name=nuoB1; OrderedLocusNames=Sare_0461;
OS   Salinispora arenicola (strain CNS-205).
OC   Bacteria; Actinobacteria; Micromonosporales; Micromonosporaceae;
OC   Salinispora.
OX   NCBI_TaxID=391037;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CNS-205;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., Dalin E.,
RA   Tice H., Pitluck S., Foster B., Schmutz J., Larimer F., Land M., Hauser L.,
RA   Kyrpides N., Ivanova N., Jensen P.R., Moore B.S., Penn K., Jenkins C.,
RA   Udwary D., Xiang L., Gontang E., Richardson P.;
RT   "Complete sequence of Salinispora arenicola CNS-205.";
RL   Submitted (OCT-2007) 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: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   -!- COFACTOR:
CC       Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883; Evidence={ECO:0000250};
CC       Note=Binds 1 [4Fe-4S] cluster. {ECO:0000250};
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 (By
CC       similarity). {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000250}; Peripheral membrane
CC       protein {ECO:0000250}; Cytoplasmic side {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the complex I 20 kDa subunit family.
CC       {ECO:0000305}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; CP000850; ABV96390.1; -; Genomic_DNA.
DR   RefSeq; WP_012180664.1; NC_009953.1.
DR   AlphaFoldDB; A8M069; -.
DR   SMR; A8M069; -.
DR   STRING; 391037.Sare_0461; -.
DR   EnsemblBacteria; ABV96390; ABV96390; Sare_0461.
DR   GeneID; 5705458; -.
DR   KEGG; saq:Sare_0461; -.
DR   PATRIC; fig|391037.6.peg.470; -.
DR   eggNOG; COG0377; Bacteria.
DR   HOGENOM; CLU_055737_4_2_11; -.
DR   OMA; GWARKYS; -.
DR   OrthoDB; 1904620at2; -.
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.
PE   3: Inferred from homology;
KW   4Fe-4S; Cell membrane; Iron; Iron-sulfur; Membrane; Metal-binding; NAD;
KW   Quinone; Translocase; Transport.
FT   CHAIN           1..188
FT                   /note="NADH-quinone oxidoreductase subunit B 1"
FT                   /id="PRO_0000376355"
FT   REGION          153..188
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   BINDING         32
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000250"
FT   BINDING         33
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000250"
FT   BINDING         98
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000250"
FT   BINDING         128
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   188 AA;  20169 MW;  123A5CB2741BA669 CRC64;
     MQVPAVLGEP IRFVLNWGRR YSLWVFNFGL ACCAIEFIAT SMSRHDFMRL GVIPFAHGPR
     QADLMVVSGT VTDKMAPAIK RLYDQMPEPK YVISFGACSN CGGPYWDSYS VTKGVDQLIP
     VDVYVPGCPP RPEALLHGIL RLQEKIAAEG AGVGGVSRPD ALASPTGGAA PRSADSLTAP
     LVRPPTPS