This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
the mitochondrial enzyme involved in the metabolism of clopidorgel and proton pump inhibitors is 
Select and explain. 
A. CYP 2A, B. CYP 2B, C. CYP 2C19, D. CYP 2C20
C: CYP 2C19
Answer: C: CYP 2C19 
Explanation: clopidogrel and proton pump inhibitors are metabolized mainly by CYP2C19 and CYP3A4.Due to this reaason there is potential of interaction between two drugs. Ref-katzung 13/e p80