You can find more information about Spindle checkpoint using the following links:

PFID PFID Old Formal Annotation PlasmoDB TDR Targets Subcellular Localization Affecting Drugs
Drug Name PubMed Articles (year of publication)
PF3D7_0719200 MAL7P1.100 NIMA related kinase 4 PlasmoDB TDR
PF3D7_0826700 PF08_0019 receptor for activated c kinase PlasmoDB TDR
Expasy - NiceZime View
Brenda - The Comprehensive Enzyme Information System