1A5Y:
reference: Visualization of the cysteinyl-phosphate intermediate of a protein-tyrosine phosphatase by x-ray crystallography., Pannifer AD, Flint AJ, Tonks NK, Barford D, J Biol Chem 1998 Apr 24;273(17):10454-62. PMID: 9553104

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