Question

Which enzyme is involved in the formation of citrulline?

• A. Arginosuccinase
• B. Ornithine transcarbamoylase
• C. Carbamoyl phosphate synthase 1
• D. None of the above

Answer 1

The correct option is B Ornithine transcarbamoylase

Formation of citrulline is the second step of the urea cycle. It s synthesized from carbamoyl phosphate and ornithine by ornithine transcarbomoylase. Carbamoyl phosphate synthase-1 is involved in the synthesis of carbamoyl phosphate.

So the correct is 'Ornithine transcarbamoylase'.