Rate limiting step in pyrimidine synthesis: (A) Dihydro-orotase, (B) Ornithine transcarbomoylase, (C) Aspaate transcarbomoylase, (D) Carbamoyl phosphate synthase-I
Answer is C. Ref-D.M.Vasudevan 7/e p506 Aspaatetranscarbamylase catalyses a committed step in pyrimidine metabolism by conveing carbamoyl phosphate into carbamoyl aspaate