BiochemistryMetabolism of protein and amino acid8dcbb51e
1st product of tryptophan Catabolism
A
Kynurenine
B
Xantheurenic acid
C
Bradykinin
D
Melatonin
High-Yield Explanation
Kynurenine is formed from tryptophan in presence of enzyme tryptophan pyrrolaseRef: DM Vasudevan - Textbook of Biochemistry, 7th edition, page no: 239, fig 18.8