You can find more information about PfPK4 using the following links:

PFID PFID Old Formal Annotation PlasmoDB TDR Targets Subcellular Localization Affecting Drugs
Drug Name PubMed Articles (year of publication)
PF3D7_0628200 PFF1370w eukaryotic translation initiation factor 2-alpha kinase PlasmoDB TDR
GSK2606414
Expasy - NiceZime View
Brenda - The Comprehensive Enzyme Information System