About: http://webisa.webdatacommons.org/9536949

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In bacteria, such as Escherichia coli and Salmonella typhimurium, tryptophan is synthesized from indole-3-glycerol phosphate (IGP) by a tryptophan
http://www.w3.org/ns/prov#wasQuotedFrom	biomedcentral.com