You can find more information about Val-tRNA ligase using the following links:

PFID PFID Old Formal Annotation PlasmoDB TDR Targets Subcellular Localization Affecting Drugs
Drug Name PubMed Articles (year of publication)
PF3D7_0311200 PFC0470w valine--tRNA ligase, putative PlasmoDB TDR
PF3D7_1461900 PF14_0589 valine--tRNA ligase, putative PlasmoDB TDR
Expasy - NiceZime View
Brenda - The Comprehensive Enzyme Information System