NUOB2_STRAW
ID NUOB2_STRAW Reviewed; 203 AA.
AC Q82DT6;
DT 26-MAY-2009, integrated into UniProtKB/Swiss-Prot.
DT 01-JUN-2003, sequence version 1.
DT 03-AUG-2022, entry version 107.
DE RecName: Full=NADH-quinone oxidoreductase subunit B 2;
DE EC=7.1.1.-;
DE AltName: Full=NADH dehydrogenase I subunit B 2;
DE AltName: Full=NDH-1 subunit B 2;
GN Name=nuoB2; OrderedLocusNames=SAV_4882;
OS Streptomyces avermitilis (strain ATCC 31267 / DSM 46492 / JCM 5070 / NBRC
OS 14893 / NCIMB 12804 / NRRL 8165 / MA-4680).
OC Bacteria; Actinobacteria; Streptomycetales; Streptomycetaceae;
OC Streptomyces.
OX NCBI_TaxID=227882;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 31267 / DSM 46492 / JCM 5070 / NBRC 14893 / NCIMB 12804 / NRRL
RC 8165 / MA-4680;
RX PubMed=11572948; DOI=10.1073/pnas.211433198;
RA Omura S., Ikeda H., Ishikawa J., Hanamoto A., Takahashi C., Shinose M.,
RA Takahashi Y., Horikawa H., Nakazawa H., Osonoe T., Kikuchi H., Shiba T.,
RA Sakaki Y., Hattori M.;
RT "Genome sequence of an industrial microorganism Streptomyces avermitilis:
RT deducing the ability of producing secondary metabolites.";
RL Proc. Natl. Acad. Sci. U.S.A. 98:12215-12220(2001).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 31267 / DSM 46492 / JCM 5070 / NBRC 14893 / NCIMB 12804 / NRRL
RC 8165 / MA-4680;
RX PubMed=12692562; DOI=10.1038/nbt820;
RA Ikeda H., Ishikawa J., Hanamoto A., Shinose M., Kikuchi H., Shiba T.,
RA Sakaki Y., Hattori M., Omura S.;
RT "Complete genome sequence and comparative analysis of the industrial
RT microorganism Streptomyces avermitilis.";
RL Nat. Biotechnol. 21:526-531(2003).
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}.
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DR EMBL; BA000030; BAC72594.1; -; Genomic_DNA.
DR RefSeq; WP_010986302.1; NZ_JZJK01000077.1.
DR AlphaFoldDB; Q82DT6; -.
DR SMR; Q82DT6; -.
DR STRING; 227882.SAV_4882; -.
DR EnsemblBacteria; BAC72594; BAC72594; SAVERM_4882.
DR KEGG; sma:SAVERM_4882; -.
DR eggNOG; COG0377; Bacteria.
DR HOGENOM; CLU_055737_4_1_11; -.
DR OMA; GWARKYS; -.
DR OrthoDB; 1904620at2; -.
DR Proteomes; UP000000428; 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.
PE 3: Inferred from homology;
KW 4Fe-4S; Cell membrane; Iron; Iron-sulfur; Membrane; Metal-binding; NAD;
KW Quinone; Reference proteome; Translocase; Transport.
FT CHAIN 1..203
FT /note="NADH-quinone oxidoreductase subunit B 2"
FT /id="PRO_0000376386"
FT REGION 167..203
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 48
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000250"
FT BINDING 49
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000250"
FT BINDING 114
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000250"
FT BINDING 144
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000250"
SQ SEQUENCE 203 AA; 21896 MW; 6A058917997F23C3 CRC64;
MDVTPEPVLL PEPKRLGALA RLAPEPMKVV LNWGRRYSLW VFNFGLACCA IEFIAASMAR
HDFIRLGVIP FAPGPRQADL MVVSGTVTDK MAPAVKRLYE QMPEPKYVIS FGACSNCGGP
YWDSYSVTKG VDQIIPVDVY VPGCPPRPEA LLQGILKLQE KIARESLSER YGSPRPSAAA
LQSDLVRPPA AGTGAGTAEG GAR
