PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2192377-9 1990 In both rad1-1 rad6-1 and rad1-1 rad18-2 rad54-1 hosts, the mean fluence for one lethal event corresponds approximately to one pyrimidine dimer per plasmid molecule, indicating that they are absolute repairless hosts for incoming DNA. pyrimidine 127-137 E3 ubiquitin-protein ligase RAD18 Saccharomyces cerevisiae S288C 33-38