7RNT:
reference: Crystal structure of the Tyr45Trp mutant of ribonuclease T1 in a complex with 2'-adenylic acid., Koellner G, Grunert HP, Landt O, Saenger W, Eur J Biochem 1991 Oct 1;201(1):199-202. PMID: 1915364

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).