3GAX:
reference: Crystal structure of human cystatin C stabilized against amyloid formation., Kolodziejczyk R, Michalska K, Hernandez-Santoyo A, Wahlbom M, Grubb A, Jaskolski M, FEBS J. 2010 Feb 19. PMID: 20175878

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