Q. Which of the following statements is not true about cytochrome P450 enzymes? (Solved)

1. They contain haem and magnesium.

2. They belong to a general class of enzymes called monooxygenases.

3. There are over 30 different cytochrome P450 enzymes.

4. Variation in cytochrome P450 enzyme profile between individuals can explain individual variation in drug susceptibility.