Quantitative structure-activity relationships (QSAR) of a series of 6-anilinouracil derivatives were developed for their inhibitory activity against the wild-type DNA polymerase I11 (pol 111) and a mutant enzyme, pol III/azp-12, derived from Bacillus subtilis. Interaction between inhibitors and both enzymes appears to result solely from hydrophobic binding. Comparison of the substituent contributions indicates increased hydrophobic character and a minor ...