You can find more information about arginine-tRNA ligase; arginyl-tRNA synthetase using the following links:

PlasmoDB - the Plasmodium genome resource
The TDR Targets Database

PDB protein strucure

Affecting Drugs
Drug Name PubMed Articles (year of publication)
Hemin
Metabolic network of knock-out strains in silico, suggested target
Protoporphyrin ix
Topology of the metabolic network, suggested target