Acetyl Coenzyme A Acyltransferase 1 (ACAA1)

Acetyl Coenzyme A Acyltransferase 1 is an enzyme operative in the beta-oxidation system of the peroxisomes. Deficiency of this enzyme leads to pseudo-Zellweger syndrome. Alternative splicing results in multiple transcript variants.Peroxisomal thiolase is markedly induced (at the level of transcription) by various hypolipidemic compounds in parallel with the other two enzymes of the peroxisomal beta-oxidation system.
The final step of beta oxidation is the cleavage of 3-ketoacyl CoA by the thiol group of another molecule of CoA. This reaction is catalyzed by Acetyl-CoA C-acyltransferase (or Β-ketothiolase). The thiol is inserted between C-2 and C-3, which yields an acetyl CoA molecule and an acyl CoA molecule, which is two carbons shorter.