3GMH:
reference: Structure of an intermediate conformer of the spindle checkpoint protein Mad2., Hara M, Ozkan E, Sun H, Yu H, Luo X, Proc Natl Acad Sci U S A. 2015 Aug 24. pii: 201512197. PMID: 26305957

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