Abstract: | Cell-free extracts prepared from rad1-19, rd2-2, rad3-1, rad4-3, rad7-1, rad10-1, rd14-1, rad16-1, and cyc1-1 (rad7) mutants of Saccharomyces cerevisiae all catalyze the preferential excision of thymine-containing pyrimidine dimers from ultraviolet-irradiated DNA specifically incised with M. luteus ultraviolet deoxyribonucleic acid incising activity. |