title: Mapping of dihydrofolate-reductase receptor site by correlation with minimal topological (steric) differences.
mesh_terms: D011487:Protein Conformation; D011743:Pyrimidines / Q000494:pharmacology; D011955:Receptors, Drug; D013329:Structure-Activity Relationship; D013762:Tetrahydrofolate Dehydrogenase / Q000378:metabolism*
chemical_list: D011743:Pyrimidines; D011955:Receptors, Drug; D013762:Tetrahydrofolate Dehydrogenase