May play a role in chloroplast biogenesis. chorismate = prephenate Allosterically inhibited by tyrosine and phenylalanine. Activated by tryptophan. kcat is 16.1 sec(-1) with chorismate as substrate (at pH 8). Metabolic intermediate biosynthesis; prephenate biosynthesis; prephenate from chorismate: step 1/1. Homodimer. Expressed in roots, shoots, rosette leaves, stems, cauline leaves, flowers and siliques. By wounding, P.syringae, bacterial elicitor and the fungal pathogens F.oxysporum and A.raphani. Truncated N-terminus. Truncated N-terminus. Truncated N-terminus.