Main Reaction: 3-Hydroxy-4-phosphohydroxy-alpha-ketobutyrate >> 4-Phosphohydroxy-threonine ( 4PHT )

Reference: PubMed ID: 11200221
Authors: Mittenhuber G
Title: Phylogenetic analyses and comparative genomics of vitamin B6 (pyridoxine) and pyridoxal phosphate biosynthesis pathways.
Published: 2001 Jan

3-Hydroxy-4-phosphohydroxy-alpha-ketobutyrate --> 4-Phosphohydroxy-threonine ( 4PHT )