Which vitamin is responsible for the conversion of tryptophan to niacin?

A Vitamin B6 ✓
B Vitamin B12
C Vitamin C
D Vitamin B2 (Riboflavin)

Explanation

Vitamin B6 (Pyridoxine) is a co-factor for the enzyme kynureninase, which catalyzes the conversion of tryptophan to niacin.

Mnemonic

_tryptophan → try-to-convert-with-B6

Source

Harper's Biochemistry
Vitamins Biochemistry Niacin metabolism Medium NURSING Confidence: high