De novo design of enzyme inhibitors by Monte Carlo ligand generation.

A new computational method for the in situ generation of small molecules within the binding site of a protein is described. The method has been evaluated using two well-studied systems, dihydrofolate reductase and thymidylate synthase. The method has also been used to guide improvements to inhibitors of HIV-1 protease. One such improvement resulted in a compound selected for preclinical studies as an antiviral agent against AIDS.