This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Biochemistry
Which of the following enzyme is not a component of fatty acid synthase complex? 
Select and explain. 
A. Acetyl Co-A carboxylase, B. Ketoacyl synthase, C. Enoyl reductase, D. Acetoacetyl
A: Acetyl Co-A carboxylase
Answer: A: Acetyl Co-A carboxylase 
Explanation: The Fatty Acid Synthase Complex Is a Homodimer of Two Polypeptide Chains Containing Six Enzyme Activities and the Acyl Carrier Protein. The 6 enzymes are- Ketoacyl synthase Ketoacyl reductase Malonyl transacylase Dehydratase Enoyl reductase Thioesterase Acetyl Co-A carboxylase is the rate-limiting enzyme of fatty acid synthesis and is an enzyme, which is not a component of fatty acid synthase complex. REF: Lippincott book of biochemistry 6th ed.