KEGG   REACTION: R04225
Entry
R04225                      Reaction                               
Name
(S)-3-methyl-2-oxopentanoate:[dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] lipoyllysine 2-oxidoreductase (decarboxylating, acceptor-2-methylpropanoylating)
Definition
(S)-3-Methyl-2-oxopentanoic acid + Enzyme N6-(lipoyl)lysine <=> [Dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] S-(2-methylbutanoyl)dihydrolipoyllysine + CO2
Equation
C00671 + C15972 <=> C15979 + C00011
Comment
3-methyl-2-oxobutanoate dehydrogenase complexes:3-methyl-2-oxobutanoate dehydrogenase
a part of multi-step reaction (see R04225+R03174+R07618, possibly identical to R03171)
subsequently R03174
TPP-dependent enzyme (see R07603+R07604)
Reaction class
RC00627  C15972_C15979
RC02856  C00671_C15979
Enzyme
1.2.4.4
Pathway
rn01100  Metabolic pathways
rn01110  Biosynthesis of secondary metabolites
Brite
Enzymatic reactions [BR:br08201]
 1. Oxidoreductase reactions
  1.2  Acting on the aldehyde or oxo group of donors
   1.2.4  With a disulfide as acceptor
    1.2.4.4
     R04225  (S)-3-Methyl-2-oxopentanoic acid + Enzyme N6-(lipoyl)lysine <=> [Dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] S-(2-methylbutanoyl)dihydrolipoyllysine + CO2
Orthology
K00166  2-oxoisovalerate dehydrogenase E1 component subunit alpha [EC:1.2.4.4]
K00167  2-oxoisovalerate dehydrogenase E1 component subunit beta [EC:1.2.4.4]
K11381  2-oxoisovalerate dehydrogenase E1 component [EC:1.2.4.4]
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