You can find more information about Ring1 using the following links:

PFID PFID Old Formal Annotation PlasmoDB TDR Targets Subcellular Localization Affecting Drugs
Drug Name PubMed Articles (year of publication)
PF3D7_0627300 PFF1325c E3 ubiquitin-protein ligase RNF5, putative PlasmoDB TDR
Expasy - NiceZime View
Brenda - The Comprehensive Enzyme Information System