9 Questions
Which enzyme catalyzes the condensation of NH4 ions with CO2 to form Carbomyl phosphate?
Carbamyl phosphate synthase I
What is the rate-limiting step in the formation of Carbomyl phosphate?
Formation of Carbomyl phosphate
Which enzyme is involved in pyrimidine synthesis and accepts amino group from glutamine?
Carbamyl phosphate synthase II
What molecule is synthesized from Carbomyl phosphate and ornithine by ornithine transcarbamylase?
Citrulline
Which amino acid is neither present in tissue proteins nor in blood, but is found in milk?
Citrulline
What enzyme condenses citrulline with aspartate to form arginosuccinate?
Arginosuccinate synthetase
Which enzyme incorporates the second amino group of urea?
Arginosuccinate synthetase
What is immediately broken down to inorganic phosphate during the formation of arginosuccinate?
AMP and Ppi 2 High energy bonds
Where is carbamoyl phosphate synthetase II located?
Cytosol
Learn about the breakdown of amino acids for energy and the process of oxidative deamination, as well as the Krebs-Henseleit urea cycle. Understand how glutamate loses its amino group as an ammonium ion and how ornithine initiates the urea cycle.
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