title: Correlation between thymineless elimination and absence of hsp II (EcoRII) specificity in N-group R factors.
abstract: Examination of R factors from 12 different compatibility groups shows that thymineless elimination is apparently confined to N-group plasmids that lack the hsp II (EcoRII) restriction specificity.
mesh_terms: D003090:Coliphages; D004267:DNA Viruses; D004269:DNA, Bacterial; D004352:Drug Resistance, Microbial; D004720:Endonucleases / Q000378:metabolism; D004926:Escherichia coli / Q000187:drug effects* / Q000201:enzymology / Q000378:metabolism; D005111:Extrachromosomal Inheritance; D009154:Mutation; D013941:Thymine / Q000378:metabolism*
chemical_list: D004269:DNA, Bacterial; D004720:Endonucleases; D013941:Thymine