title: New types of Escherichia coli recombination-deficient mutants.
abstract: A set of Escherichia coli mutants deficient in intramolecular recombination and different from those previously found is described. All have temperature-sensitive lethal mutations. The mutants have been characterized with respect to the following properties: the Pap phenotype, deoxyribonucleic acid synthesis, sensitivity to ultraviolet light, ability to support the growth of phage lambda, filament formation, and mutation frequency.
mesh_terms: D003090:Coliphages / Q000254:growth & development; D004269:DNA, Bacterial / Q000096:biosynthesis; D004926:Escherichia coli / Q000378:metabolism / Q000528:radiation effects / Q000648:ultrastructure; D005796:Genes; D009154:Mutation; D011995:Recombination, Genetic; D013696:Temperature; D014466:Ultraviolet Rays
chemical_list: D004269:DNA, Bacterial