1SSN:
reference: Nuclear magnetic resonance solution structure of the plasminogen-activator protein staphylokinase., Ohlenschlager O, Ramachandran R, Guhrs KH, Schlott B, Brown LR, Biochemistry 1998 Jul 28;37(30):10635-42. PMID: 9692953

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