About: http://webisa.webdatacommons.org/449161589

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	R1, R2, R3 and R4 can also preferably be ##STR18## in which m3 is an integer for 0 to 4 and AA is a natural amino acid such as proline or glycine and ##STR19##
http://www.w3.org/ns/prov#wasQuotedFrom	google.es