Template-guided method for protein-ligand complex structure prediction: Application to CASP15 protein-ligand studies.Critical Assessment of Structure Prediction 15 (CASP15) added a new category of ligand prediction to promote the development of protein/RNA-ligand modeling methods, which have become important tools in modern drug discovery. 
CASP15
The Protein Data Bank was scanned for template structures containing the target protein, homologous proteins, or proteins sharing a similar fold with the target protein. 
Protein Data Bank