Reaction: alpha-methylbutyryl-CoA + FAD => tiglyl-CoA + FADH2
- in pathway: Branched-chain amino acid catabolism
Mitochondrial 2-methyl branched chain acyl-CoA dehydrogenase (ACADSB) catalyzes the reaction of alpha-methylbutyryl-CoA and FAD to form 'tiglyl-CoA and FADH2 (Andresen et al. 2000; Gibson et al. 2000). Unpublished crystallographic data (PDB 2JIF) indicate that the enzyme is a tetramer of ACADSB polypeptides whose aminoterminal 51 residues, a mitochondrial targeting sequence, have been removed.
Reaction - small molecule participants:
tiglyl-CoA [mitochondrial matrix]
FADH2 [mitochondrial matrix]
2MBUT-CoA [mitochondrial matrix]
FAD [mitochondrial matrix]
Reactome.org reaction link: R-HSA-70800
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Reaction input - small molecules:
2-methylbutanoyl-CoA
FAD(3-)
Reaction output - small molecules:
2-methylcrotonoyl-CoA
FADH2(2-)
Reactome.org link: R-HSA-70800