Protein Catabolism Regulation

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Biochemistry › Protein Catabolism Regulation

Questions 1 - 1
1

Which enzyme catalyzes the rate-limiting step of the urea cycle?

Carbamoyl phosphate synthetase

Carbamoyl phosphate dehydrogenase

Argininosuccinate lyase

Ornithine transcarbamylase

Explanation

Carbamoyl phosphate synthetase is the rate-limiting step of the urea cycle. It is the first step of the urea cycle and occurs exclusive in the mitochondria of hepatic and renal cells.

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