About: http://webisa.webdatacommons.org/180863416

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	They may advantageously additionally contain other, socalled nonessential, amino acids, for example glycine, alanine, proline, histidine, or diamino valeric acid and serine.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com