Which of the following is not a characteristic of pyridoxal in its active form?
A) It is covalently bonded to its enzyme.
B) It requires being attached to a phosphate group.
C) It bonds to an amine group through by means of the phosphate group.
D) It has a particularly reactive carbonyl group.

Question

Quizplus · Accepted Answer

Pyridoxal phosphate, the active form of pyridoxal (vitamin B6), does not bond to an amine group through the phosphate group. Instead, it typically forms a Schiff base with the amino group of amino acids, facilitated by its reactive carbonyl group. The phosphate group is crucial for its binding to the enzyme and its catalytic activity, but it does not directly bond to amine groups.

Which of the Following Is Not a Characteristic of Pyridoxal