ID   ODPB_RICBR              Reviewed;         325 AA.
AC   Q1RJX3;
DT   29-MAY-2007, integrated into UniProtKB/Swiss-Prot.
DT   16-MAY-2006, sequence version 1.
DT   27-MAR-2024, entry version 100.
DE   RecName: Full=Pyruvate dehydrogenase E1 component subunit beta;
DE            EC=1.2.4.1;
GN   Name=pdhB; OrderedLocusNames=RBE_0260;
OS   Rickettsia bellii (strain RML369-C).
OC   Bacteria; Pseudomonadota; Alphaproteobacteria; Rickettsiales;
OC   Rickettsiaceae; Rickettsieae; Rickettsia; belli group.
OX   NCBI_TaxID=336407;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=RML369-C;
RX   PubMed=16703114; DOI=10.1371/journal.pgen.0020076;
RA   Ogata H., La Scola B., Audic S., Renesto P., Blanc G., Robert C.,
RA   Fournier P.-E., Claverie J.-M., Raoult D.;
RT   "Genome sequence of Rickettsia bellii illuminates the role of amoebae in
RT   gene exchanges between intracellular pathogens.";
RL   PLoS Genet. 2:733-744(2006).
CC   -!- FUNCTION: The pyruvate dehydrogenase complex catalyzes the overall
CC       conversion of pyruvate to acetyl-CoA and CO(2). It contains multiple
CC       copies of three enzymatic components: pyruvate dehydrogenase (E1),
CC       dihydrolipoamide acetyltransferase (E2) and lipoamide dehydrogenase
CC       (E3) (By similarity). {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H(+) + N(6)-[(R)-lipoyl]-L-lysyl-[dihydrolipoyllysine-residue
CC         acetyltransferase] + pyruvate = CO2 + N(6)-[(R)-S(8)-
CC         acetyldihydrolipoyl]-L-lysyl-[dihydrolipoyllysine-residue
CC         acetyltransferase]; Xref=Rhea:RHEA:19189, Rhea:RHEA-COMP:10480,
CC         Rhea:RHEA-COMP:10481, ChEBI:CHEBI:15361, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:16526, ChEBI:CHEBI:83099, ChEBI:CHEBI:83111; EC=1.2.4.1;
CC   -!- COFACTOR:
CC       Name=thiamine diphosphate; Xref=ChEBI:CHEBI:58937;
CC         Evidence={ECO:0000250};
CC   -!- SUBUNIT: Heterodimer of an alpha and a beta chain.
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DR   EMBL; CP000087; ABE04341.1; -; Genomic_DNA.
DR   RefSeq; WP_011476953.1; NC_007940.1.
DR   AlphaFoldDB; Q1RJX3; -.
DR   SMR; Q1RJX3; -.
DR   KEGG; rbe:RBE_0260; -.
DR   eggNOG; COG0022; Bacteria.
DR   HOGENOM; CLU_012907_1_1_5; -.
DR   OrthoDB; 9780894at2; -.
DR   Proteomes; UP000001951; Chromosome.
DR   GO; GO:0004739; F:pyruvate dehydrogenase (acetyl-transferring) activity; IEA:UniProtKB-EC.
DR   GO; GO:0006086; P:acetyl-CoA biosynthetic process from pyruvate; IEA:InterPro.
DR   GO; GO:0006096; P:glycolytic process; IEA:UniProtKB-KW.
DR   CDD; cd07036; TPP_PYR_E1-PDHc-beta_like; 1.
DR   Gene3D; 3.40.50.920; -; 1.
DR   Gene3D; 3.40.50.970; -; 1.
DR   InterPro; IPR027110; PDHB.
DR   InterPro; IPR029061; THDP-binding.
DR   InterPro; IPR009014; Transketo_C/PFOR_II.
DR   InterPro; IPR005475; Transketolase-like_Pyr-bd.
DR   InterPro; IPR033248; Transketolase_C.
DR   PANTHER; PTHR11624; DEHYDROGENASE RELATED; 1.
DR   PANTHER; PTHR11624:SF96; PYRUVATE DEHYDROGENASE E1 COMPONENT SUBUNIT BETA, MITOCHONDRIAL; 1.
DR   Pfam; PF02779; Transket_pyr; 1.
DR   Pfam; PF02780; Transketolase_C; 1.
DR   SMART; SM00861; Transket_pyr; 1.
DR   SUPFAM; SSF52518; Thiamin diphosphate-binding fold (THDP-binding); 1.
DR   SUPFAM; SSF52922; TK C-terminal domain-like; 1.
PE   3: Inferred from homology;
KW   Oxidoreductase; Pyruvate; Reference proteome; Thiamine pyrophosphate.
FT   CHAIN           1..325
FT                   /note="Pyruvate dehydrogenase E1 component subunit beta"
FT                   /id="PRO_0000288760"
FT   BINDING         59
FT                   /ligand="thiamine diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58937"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   325 AA;  35708 MW;  89AC46026246C64B CRC64;
     MQITVREALR DAMQEEMIRD DKVFVMGEEV AEYQGAYKVT QGLLEQFGPK RVIDTPITEY
     GFAGLAVGAA FAGLRPIVEF MTFNFAMQAM DHIVNSAAKT HYMSGGQVRC PIVFRGPNGA
     ASRVAAQHSQ NYAACYSYIP GLKVVAPYSA EDHKGLMITA IRDDNPVIFL ENEILYGHSF
     DISENVEPIP FGKAKVLKEG DSVTIVTFSI QVKLALDAAN ILQSDNINCE VIDLRTIKPL
     DIDTIIESVK KTGRLVVIEE GWFFAGIGAT IAAIVMKEAF DYLDAPVEIV SGKDVPLPYA
     VNLEKLALPS EYDVINAVKK VCYIK
//