FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
CV Term Report
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General Information
Term branched-chain 2-oxo acid dehydrogenase activity ID (Ontology) GO:0003863 (Gene Ontology)
Definition Catalysis of the reaction: N(6)-[(R)-lipoyl]-L-lysyl-[dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] + 3-methyl-2-oxobutanoate + H+ = N(6)-[(R)-S(8)-2-methylpropanoyldihydrolipoyl]-L-lysyl-[dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] + CO2. Also acts on 4-methyl-2-oxopentanoate and (S)-3-methyl-2-oxopentanoate, so that it acts on the 2-oxo acids that derive from the action of transaminases on valine, leucine and isoleucine.
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Data Class Field Records
Genes (FBgn)  GO_MOLECULAR_FUNCTION       2
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Relevant FlyBase reports
 Gene Groups Genes
 branched-chain 2-oxo acid dehydrogenase activity (all annotations which use CV term, excluding "NOT" statements)       2      2
     contributes_to | branched-chain 2-oxo acid dehydrogenase activity       --       2
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  oxidoreductase activity, acting on the aldehyde or oxo group of donors
   |__oxidoreductase activity, acting on the aldehyde or oxo group of donors, disulfide as acceptor
       |__branched-chain 2-oxo acid dehydrogenase activity  4 rec.
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Is a oxidoreductase activity, acting on the aldehyde or oxo group of donors, disulfide as acceptor
Part of
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Synonyms
  • "2-oxoisocaproate dehydrogenase activity" RELATED[ EC:1 ]
    "2-oxoisovalerate (lipoate) dehydrogenase activity" RELATED[ EC:1 ]
    "3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring) activity" NARROW
    "3-methyl-2-oxobutanoate dehydrogenase (lipoamide) activity" RELATED[ EC:1 ]
    "3-methyl-2-oxobutanoate:dihydrolipoyllysine-residue (2-methylpropanoyl)transferase-lipoyllysine 2-oxidoreductase (decarboxylating, acceptor-2-methylpropanoylating)" RELATED[ EC:1 ]
    "3-methyl-2-oxobutanoate:lipoamide oxidoreductase (decarboxylating and acceptor-2-methylpropanoylating) activity" RELATED[ EC:1 ]
    "alpha-keto-alpha-methylvalerate dehydrogenase activity" RELATED[ EC:1 ]
    "alpha-ketoacid dehydrogenase activity" NARROW
    "alpha-ketoisocaproate dehydrogenase activity" RELATED[ EC:1 ]
    "alpha-ketoisocaproic dehydrogenase activity" RELATED[ EC:1 ]
    "alpha-ketoisocaproic-alpha-keto-alpha-methylvaleric dehydrogenase activity" RELATED[ EC:1 ]
    "alpha-ketoisovalerate dehydrogenase activity" RELATED[ EC:1 ]
    "alpha-oxoisocaproate dehydrogenase activity" RELATED[ EC:1 ]
    "BCKDH activity" RELATED[ EC:1 ]
    "BCOAD activity" RELATED[ EC:1 ]
    "branched chain keto acid dehydrogenase activity" RELATED[ EC:1 ]
    "branched-chain (-2-oxoacid) dehydrogenase (BCD) activity" RELATED[ EC:1 ]
    "branched-chain 2-keto acid dehydrogenase activity" RELATED[ EC:1 ]
    "branched-chain alpha-keto acid dehydrogenase activity" RELATED[ EC:1 ]
    "branched-chain alpha-oxo acid dehydrogenase activity" RELATED[ EC:1 ]
    "branched-chain keto acid dehydrogenase activity" RELATED[ EC:1 ]
    "branched-chain ketoacid dehydrogenase activity" RELATED[ EC:1 ]
    "dehydrogenase, 2-oxoisovalerate (lipoate) activity" RELATED[ EC:1 ]
    "dehydrogenase, branched chain alpha-keto acid activity" RELATED[ EC:1 ]
Secondary IDs
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EC:1.2.4.4
MetaCyc:1.2.4.4-RXN
RHEA:13457
RHEA:84639
RHEA:84643