Main Reaction: Threonine >> 2-Ketobutyrate

Reference: PubMed ID: 21110891
Authors: Tseng HC, Harwell CL, Martin CH, Prather KL
Title: Biosynthesis of chiral 3-hydroxyvalerate from single propionate-unrelated carbon sources in metabolically engineered E. coli.
Published: 2010 Nov 27

Threonine --> 2-Ketobutyrate