1GO4:
reference: Crystal structure of the tetrameric Mad1-Mad2 core complex: implications of a 'safety belt' binding mechanism for the spindle checkpoint., Sironi L, Mapelli M, Knapp S, De Antoni A, Jeang KT, Musacchio A, EMBO J 2002 May 15;21(10):2496-506. PMID: 12006501

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