Xanthurenic acid, accumulation occurs due to pyridoxine deficiency, is a metabolite of which amino acid?
In the metabolism of Tryptophan, Kynurenine is an intermediate step.T his step is catalyzed by Kynureninase enzyme which is Vitamin B6 dependent. When there is Vitamin B6 deficiency this pathway is blocked. Hence accumulated Kynurenine is shunted to Xanthurenic acid.
Tyrosine
Phenylalanine
Tryptophan
Alanine
Metabolism of protein and amino acid