Ammonia-Lyase, Threonine

A Pyridoxal-phosphate protein that catalyzes the Deamination of Threonine to 2-ketobutyrate and Ammonia. The Role of this enzyme can be biosynthetic or biodegradative. In the former Role it supplies 2-ketobutyrate required for Isoleucine biosynthesis, while in the latter it is only involved in the breakdown of Threonine to supply energy. This enzyme was formerly listed as EC