NCBI Accession #
NP_001105219.1
NCBI GenBank Nucleotide #
NM_001111749.1
NCBI Official Full Name
indole-3-glycerol phosphate lyase, chloroplastic
NCBI Official Synonym Symbols
trpA; GRMZM2G085381
NCBI Protein Information
indole-3-glycerol phosphate lyase, chloroplastic
UniProt Protein Name
Indole-3-glycerol phosphate lyase, chloroplastic
UniProt Synonym Protein Names
Benzoxazineless 1; Indole synthase; Tryptophan synthase alpha chain (EC:4.2.1.20)
UniProt Primary Accession #
P42390
UniProt Secondary Accession #
Q84K75
UniProt Related Accession #
P42390
UniProt Comments
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.