http://purl.uniprot.org/keywords/822 | http://www.w3.org/2000/01/rdf-schema#comment | "Protein involved in the synthesis of the aromatic amino acid tryptophan (Trp) in bacteria, fungi and plants from chorismate. Trp is needed to synthesize proteins and as a precursor to niacin, serotonin and melatonin."xsd:string |