Which of the following groups of amino acids are nitrogen donors in purine ring biosynthesis?

Question

Quizplus · Accepted Answer

In purine biosynthesis, nitrogen atoms are donated by glutamine, glycine, and aspartate. Glutamine provides two nitrogen atoms, glycine contributes one nitrogen atom, and aspartate provides one nitrogen atom. Synthesis of the purine nucleotides requires 5 moles of ATP, 2 moles of glutamine, 1 mole of glycine, 1 mole of CO₂, 1 mole of aspartate, and 2 moles of formate.

Which of the Following Groups of Amino Acids Are Nitrogen