You can find more information about PP1 using the following links:

PFID PFID Old Formal Annotation PlasmoDB TDR Targets Subcellular Localization Affecting Drugs
Drug Name PubMed Articles (year of publication)
PF3D7_0314400 PFC0595c serine/threonine protein phosphatase 6, putative PlasmoDB TDR
PF3D7_1414400 PF14_0142 serine/threonine protein phosphatase PP1 PlasmoDB TDR
Bipartite peptides containing dpt-sh1 and pp1- or pp2a-interacting sequences.
Leucine-rich repeat protein
Sirna, suggested target
PF3D7_1423300 PF14_0224 serine/threonine protein phosphatase 7 PlasmoDB TDR
PF3D7_1466100 PF14_0630 protein phosphatase containing kelch-like domains PlasmoDB TDR
Expasy - NiceZime View
Brenda - The Comprehensive Enzyme Information System