1GO4: Crystal Structure Of Mad1-Mad2 Reveals A Conserved Mad2 Bind In Mad1 And Cdc20.
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

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