5DLS:
reference: Identification of novel, in vivo active Chk1 inhibitors utilizing structure guided drug design., Massey AJ, Stokes S, Browne H, Foloppe N, Fiumana A, Scrace S, Fallowfield M, Bedford S, Webb P, Baker L, Christie M, Drysdale MJ, Wood M, Oncotarget. 2015 Sep 30. PMID: 26437226

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