An enzyme that catalyzes the formation of acetoacetyl-CoA from two molecules of ACETYL COA. Some enzymes called thiolase or thiolase-I have referred to this activity or to the activity of ACETYL-COA C-ACYLTRANSFERASE.

Synonyms: Acetyl-CoA:acetyl-CoA C-acetyltransferase, Acetyl CoA Acetyltransferase, Acetyltransferase, Acetyl-CoA, Acetyl-CoA C-Acetyltransferase, Acetyl CoA C Acetyltransferase, Thiolase, Acetoacetyl CoA, C-Acetyltransferase, Acetyl-CoA, EC 2.3.1.9, Acetyl-CoA Acetyltransferase, Acetoacetyl CoA Thiolase, CoA Thiolase, Acetoacetyl, Acetyl Coenzyme A Acetyltransferase