Anthranilate Phosphoribosyltransferase

**Definition:** An enzyme that catalyzes the formation of N-5'-phosphoribosylanthranilic acid from anthranilate and phosphoribosylpyrophosphate, the first step in tryptophan synthesis in E. coli. It exists in a complex with ANTHRANILATE SYNTHASE in bacteria. EC 2.4.2.18.

**Tree numbers:** - D08.811.600.075 - D08.811.913.400.725.160

**Synonyms:** - Phosphoribosylanthranilate Pyrophosphorylase - Anthranilate PR Transferase