Tryptophan is a Precursor in the Synthesis of _________

Question

Tryptophan is a precursor in the synthesis of _________.
A) Carnitine
B) NAD
C) GABA
D) Both A and B are correct
E) All of the above are correct

Accepted Answer

Tryptophan is a precursor in the synthesis of NAD (Nicotinamide adenine dinucleotide), a coenzyme found in all living cells that is critical for energy metabolism. It is not directly involved in the synthesis of carnitine or GABA.