Main Reaction: Tryptophan >> NAD+

Reference: PubMed ID: 26352206
Authors: Li J, Dou X, Li S, Zhang X, Zeng Y, Song Z
Title: Nicotinamide ameliorates palmitate-induced ER stress in hepatocytes via cAMP/PKA/CREB pathway-dependent Sirt1 upregulation.
Published: 2015 Nov

Tryptophan --> NAD