Which of the following coenzymes responsible for 2 single-carbon additions in purine biosynthesis?
A)THF
B)biotin
C)SAM
D)TPP

Question

Quizplus · Accepted Answer

THF (tetrahydrofolate) is responsible for carrying single-carbon units in many metabolic pathways, including purine biosynthesis. Specifically, THF is involved in adding two single-carbon units to the purine ring during its biosynthesis. Biotin, SAM, and TPP are not directly involved in purine biosynthesis.

Which of the Following Coenzymes Responsible for 2 Single-Carbon Additions