This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Pharmacology, Subject name: Pharmacology
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 2D6
C: CYP 2C19
Answer: C: CYP 2C19 
Explanation: Ans. (C) CYP 2C19(Ref: Katzung 13th/e p80)Clopidogrel and proton pump inhibitors are metabolized mainly by CYP2C19 and by CYP3A4. Due to this reason there is potential of interaction between these two drugs