You can find more information about Ubc9 using the following links:

PFID PFID Old Formal Annotation PlasmoDB TDR Targets Subcellular Localization Affecting Drugs
Drug Name PubMed Articles (year of publication)
PF3D7_0915100 PFI0740c SUMO-conjugating enzyme UBC9 PlasmoDB TDR
Biochemical analyses, suggested target
PF3D7_1451300 PF14_0488 E3 SUMO-protein ligase NSE2, putative PlasmoDB TDR
Expasy - NiceZime View
Brenda - The Comprehensive Enzyme Information System