(GenBank) tryptophan synthase alpha chain (YP_062084.1| tryptophan synthase alpha subunit [Leifsonia xyli subsp. xyli str. CTCB07]; O68906|TRPA_MYCIT Tryptophan synthase alpha chain). The alpha subunit is responsible for the aldol cleavage of indoleglycerol phosphate to indole and glyceraldehyde 3-phosphate. pfam00290, Trp_syntA,Tryptophan synthase alpha chain. trpA: tryptophan synthase alpha subun; High confidence in function and specificity