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ODBB_DICDI
ID   ODBB_DICDI              Reviewed;         370 AA.
AC   Q55FN7;
DT   08-APR-2008, integrated into UniProtKB/Swiss-Prot.
DT   24-MAY-2005, sequence version 1.
DT   25-MAY-2022, entry version 97.
DE   RecName: Full=2-oxoisovalerate dehydrogenase subunit beta, mitochondrial;
DE            EC=1.2.4.4;
DE   AltName: Full=3-methyl-2-oxobutanoate dehydrogenase;
DE   AltName: Full=Branched-chain alpha-keto acid dehydrogenase E1 component beta chain;
DE            Short=BCKDE1B;
DE            Short=BCKDH E1-beta;
DE   Flags: Precursor;
GN   Name=bkdB; ORFNames=DDB_G0268020;
OS   Dictyostelium discoideum (Slime mold).
OC   Eukaryota; Amoebozoa; Evosea; Eumycetozoa; Dictyostelia; Dictyosteliales;
OC   Dictyosteliaceae; Dictyostelium.
OX   NCBI_TaxID=44689;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=AX4;
RX   PubMed=15875012; DOI=10.1038/nature03481;
RA   Eichinger L., Pachebat J.A., Gloeckner G., Rajandream M.A., Sucgang R.,
RA   Berriman M., Song J., Olsen R., Szafranski K., Xu Q., Tunggal B.,
RA   Kummerfeld S., Madera M., Konfortov B.A., Rivero F., Bankier A.T.,
RA   Lehmann R., Hamlin N., Davies R., Gaudet P., Fey P., Pilcher K., Chen G.,
RA   Saunders D., Sodergren E.J., Davis P., Kerhornou A., Nie X., Hall N.,
RA   Anjard C., Hemphill L., Bason N., Farbrother P., Desany B., Just E.,
RA   Morio T., Rost R., Churcher C.M., Cooper J., Haydock S., van Driessche N.,
RA   Cronin A., Goodhead I., Muzny D.M., Mourier T., Pain A., Lu M., Harper D.,
RA   Lindsay R., Hauser H., James K.D., Quiles M., Madan Babu M., Saito T.,
RA   Buchrieser C., Wardroper A., Felder M., Thangavelu M., Johnson D.,
RA   Knights A., Loulseged H., Mungall K.L., Oliver K., Price C., Quail M.A.,
RA   Urushihara H., Hernandez J., Rabbinowitsch E., Steffen D., Sanders M.,
RA   Ma J., Kohara Y., Sharp S., Simmonds M.N., Spiegler S., Tivey A.,
RA   Sugano S., White B., Walker D., Woodward J.R., Winckler T., Tanaka Y.,
RA   Shaulsky G., Schleicher M., Weinstock G.M., Rosenthal A., Cox E.C.,
RA   Chisholm R.L., Gibbs R.A., Loomis W.F., Platzer M., Kay R.R.,
RA   Williams J.G., Dear P.H., Noegel A.A., Barrell B.G., Kuspa A.;
RT   "The genome of the social amoeba Dictyostelium discoideum.";
RL   Nature 435:43-57(2005).
CC   -!- FUNCTION: The branched-chain alpha-keto dehydrogenase complex catalyzes
CC       the overall conversion of alpha-keto acids to acyl-CoA and CO(2). It
CC       contains multiple copies of three enzymatic components: branched-chain
CC       alpha-keto acid decarboxylase (E1), lipoamide acyltransferase (E2) and
CC       lipoamide dehydrogenase (E3) (By similarity). {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(R)-N(6)-lipoyl-L-lysyl-[dihydrolipoyllysine-residue (2-
CC         methylpropanoyl)transferase] + 3-methyl-2-oxobutanoate + H(+) = (R)-
CC         N(6)-(S(8)-2-methylpropanoyldihydrolipoyl)-L-lysyl-
CC         [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] + CO2;
CC         Xref=Rhea:RHEA:13457, Rhea:RHEA-COMP:10488, Rhea:RHEA-COMP:10489,
CC         ChEBI:CHEBI:11851, ChEBI:CHEBI:15378, ChEBI:CHEBI:16526,
CC         ChEBI:CHEBI:83099, ChEBI:CHEBI:83142; EC=1.2.4.4;
CC   -!- SUBUNIT: Heterotetramer of 2 alpha and 2 beta chains. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Mitochondrion matrix {ECO:0000250}.
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DR   EMBL; AAFI02000003; EAL73463.1; -; Genomic_DNA.
DR   RefSeq; XP_647496.1; XM_642404.1.
DR   AlphaFoldDB; Q55FN7; -.
DR   SMR; Q55FN7; -.
DR   STRING; 44689.DDB0230185; -.
DR   PaxDb; Q55FN7; -.
DR   EnsemblProtists; EAL73463; EAL73463; DDB_G0268020.
DR   GeneID; 8616303; -.
DR   KEGG; ddi:DDB_G0268020; -.
DR   dictyBase; DDB_G0268020; bkdB.
DR   eggNOG; KOG0525; Eukaryota.
DR   HOGENOM; CLU_012907_1_0_1; -.
DR   InParanoid; Q55FN7; -.
DR   OMA; SEAYYMA; -.
DR   PhylomeDB; Q55FN7; -.
DR   Reactome; R-DDI-389661; Glyoxylate metabolism and glycine degradation.
DR   Reactome; R-DDI-70895; Branched-chain amino acid catabolism.
DR   PRO; PR:Q55FN7; -.
DR   Proteomes; UP000002195; Chromosome 1.
DR   GO; GO:0005947; C:mitochondrial alpha-ketoglutarate dehydrogenase complex; ISS:UniProtKB.
DR   GO; GO:0003863; F:3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring) activity; IEA:UniProtKB-EC.
DR   GO; GO:0009083; P:branched-chain amino acid catabolic process; ISS:UniProtKB.
DR   GO; GO:0007584; P:response to nutrient; IBA:GO_Central.
DR   Gene3D; 3.40.50.920; -; 1.
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   Pfam; PF02779; Transket_pyr; 1.
DR   Pfam; PF02780; Transketolase_C; 1.
DR   SMART; SM00861; Transket_pyr; 1.
DR   SUPFAM; SSF52518; SSF52518; 1.
DR   SUPFAM; SSF52922; SSF52922; 1.
PE   3: Inferred from homology;
KW   Mitochondrion; Oxidoreductase; Reference proteome; Transit peptide.
FT   TRANSIT         1..25
FT                   /note="Mitochondrion"
FT                   /evidence="ECO:0000255"
FT   CHAIN           26..370
FT                   /note="2-oxoisovalerate dehydrogenase subunit beta,
FT                   mitochondrial"
FT                   /id="PRO_0000327589"
SQ   SEQUENCE   370 AA;  40725 MW;  083E690721B9559D CRC64;
     MLRGNNIKKV NSLLVRSFHS TVGNRSGGPS TPINYPSLEI ENAGEKQKMN LFQAINNGMD
     IAMQKDSKAV VFGEDVGFGG VFRCTVGLRD KYGASRVFNT PLCEQGIAGF AIGLAAQGAT
     PIAEIQFADY IFPAFDQIVN EAAKYRYRSG GQFDCGSLTI RSPYGAVGHG GHYHSQSPES
     YFGHTPGLKV VIPSTPIEAK GLLLASIREK DPVIFFEPKL MYRSAVEEVP IGDYEIPLGK
     ARIVKEGKDI TIIGWGAQMR VLLQAVNMAE EKLGISCELI DLRTIQPWDV ETVVESVKKT
     GRVVISHEAP KTGGWAAEIS ATIQERCFLH LEAPIQRVCG YDTPFPLIFE KFYVPDHLKN
     FESIKKTMVY
 
 
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