NUOB_AFIC5
ID NUOB_AFIC5 Reviewed; 198 AA.
AC B6JGW0; F8BWN7;
DT 26-MAY-2009, integrated into UniProtKB/Swiss-Prot.
DT 16-DEC-2008, sequence version 1.
DT 03-AUG-2022, entry version 78.
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};
GN OrderedLocusNames=OCAR_5923, OCA5_c20980;
OS Afipia carboxidovorans (strain ATCC 49405 / DSM 1227 / KCTC 32145 / OM5)
OS (Oligotropha carboxidovorans).
OC Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC Bradyrhizobiaceae; Afipia.
OX NCBI_TaxID=504832;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 49405 / DSM 1227 / KCTC 32145 / OM5;
RX PubMed=18539730; DOI=10.1128/jb.00614-08;
RA Paul D., Bridges S., Burgess S.C., Dandass Y., Lawrence M.L.;
RT "Genome sequence of the chemolithoautotrophic bacterium Oligotropha
RT carboxidovorans OM5T.";
RL J. Bacteriol. 190:5531-5532(2008).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 49405 / DSM 1227 / KCTC 32145 / OM5;
RX PubMed=21742883; DOI=10.1128/jb.05619-11;
RA Volland S., Rachinger M., Strittmatter A., Daniel R., Gottschalk G.,
RA Meyer O.;
RT "Complete genome sequences of the chemolithoautotrophic Oligotropha
RT carboxidovorans strains OM4 and OM5.";
RL J. Bacteriol. 193:5043-5043(2011).
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
CC ubiquinone. 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 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; CP001196; ACI93044.1; -; Genomic_DNA.
DR EMBL; CP002826; AEI06805.1; -; Genomic_DNA.
DR RefSeq; WP_012563071.1; NC_015684.1.
DR AlphaFoldDB; B6JGW0; -.
DR SMR; B6JGW0; -.
DR STRING; 504832.OCAR_5923; -.
DR EnsemblBacteria; AEI06805; AEI06805; OCA5_c20980.
DR KEGG; oca:OCAR_5923; -.
DR KEGG; ocg:OCA5_c20980; -.
DR PATRIC; fig|504832.7.peg.2220; -.
DR eggNOG; COG0377; Bacteria.
DR HOGENOM; CLU_055737_7_0_5; -.
DR OMA; AGWVRKS; -.
DR OrthoDB; 1904620at2; -.
DR Proteomes; UP000007730; 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; Reference proteome; Translocase; Transport;
KW Ubiquinone.
FT CHAIN 1..198
FT /note="NADH-quinone oxidoreductase subunit B"
FT /id="PRO_0000376295"
FT REGION 1..29
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 1..24
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 77
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
FT BINDING 78
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
FT BINDING 142
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
FT BINDING 172
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
SQ SEQUENCE 198 AA; 21738 MW; EBC33184F4E208B0 CRC64;
MGLNPTQVST SGSPQVSQPA TGVLDPRTGQ PVGADDRYFL EINHELSDKG FFVAAADDLI
TWARTGSLMW MTFGLACCAV EMMQVSMPRY DVERFGFAPR ASPRQSDVMI VAGTLTNKMA
PALRKVYDQM PEPRYVISMG SCANGGGYYH YSYSVVRGCD RIVPVDIYVP GCPPTAEALL
YGVLLLQKKI RRIGTIER
