FEATURES

FAMILY

DESCRIPTION

Also known as TRPA_MAIZE, BX1. The alpha subunit is responsible for the aldol cleavage of indoleglycerol phosphate to indole and glyceraldehyde 3-phosphate. In bacteria, tryptophan synthase alpha (TSA) activity is almost completely dependent on formation of an active alpha2beta2 complex with tryptophan synthase beta (TSB), and indole is usually not released during tryptophan synthesis. In maize, the TSA homolog BX1 catalyzes the formation of free indole from indole-3-glycerol phosphate, independently of TSB. Tetramer of two alpha and two beta chains for the tryptophan synthase activity. Homodimer of alpha chains for the indole-3-glycerol phosphate lyase activity.

EXTERNAL LINKS

uniprot
enzyme classification

BX1

Indole-3-glycerol phosphate lyase, chloroplastic

BX1

Molecular Synopsis