1A6Q:
reference: Crystal structure of the protein serine/threonine phosphatase 2C at 2.0 A resolution., Das AK, Helps NR, Cohen PT, Barford D, EMBO J 1996 Dec 16;15(24):6798-809. PMID: 9003755

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