NUOB_PARL1
ID NUOB_PARL1 Reviewed; 191 AA.
AC A7HY48;
DT 26-MAY-2009, integrated into UniProtKB/Swiss-Prot.
DT 11-SEP-2007, sequence version 1.
DT 03-AUG-2022, entry version 86.
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=Plav_3225;
OS Parvibaculum lavamentivorans (strain DS-1 / DSM 13023 / NCIMB 13966).
OC Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC Parvibaculaceae; Parvibaculum.
OX NCBI_TaxID=402881;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DS-1 / DSM 13023 / NCIMB 13966;
RX PubMed=22675581; DOI=10.4056/sigs.2215005;
RA Schleheck D., Weiss M., Pitluck S., Bruce D., Land M.L., Han S.,
RA Saunders E., Tapia R., Detter C., Brettin T., Han J., Woyke T., Goodwin L.,
RA Pennacchio L., Nolan M., Cook A.M., Kjelleberg S., Thomas T.;
RT "Complete genome sequence of Parvibaculum lavamentivorans type strain (DS-
RT 1(T)).";
RL Stand. Genomic Sci. 5:298-310(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; CP000774; ABS64831.1; -; Genomic_DNA.
DR RefSeq; WP_012112159.1; NC_009719.1.
DR AlphaFoldDB; A7HY48; -.
DR SMR; A7HY48; -.
DR STRING; 402881.Plav_3225; -.
DR EnsemblBacteria; ABS64831; ABS64831; Plav_3225.
DR KEGG; pla:Plav_3225; -.
DR eggNOG; COG0377; Bacteria.
DR HOGENOM; CLU_055737_7_0_5; -.
DR OMA; AGWVRKS; -.
DR OrthoDB; 1904620at2; -.
DR Proteomes; UP000006377; 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..191
FT /note="NADH-quinone oxidoreductase subunit B"
FT /id="PRO_0000376298"
FT BINDING 70
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
FT BINDING 71
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
FT BINDING 135
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
FT BINDING 165
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01356"
SQ SEQUENCE 191 AA; 20985 MW; BB17BA17AA4A2316 CRC64;
MGVTNPDKVI SNTPGVVDPA TSVPAWQDDA FFRQATDQLA DKGFVLTTVD DLINWSRTGS
LMWMTFGLAC CAVEMMQTSM PRYDAERFGV APRASPRQSD VMIVAGTLTN KMAPALRKVY
DQMPEPRYVI SMGSCANGGG YYHYSYSVVR GCDRIVPVDI YVPGCPPTAE ALLYGILALQ
KKIRRTGTLD R
