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Title: Hyper-recombination in dam mutants of Escherichia coli K-12. Author: Marinus MG, Konrad EB. Journal: Mol Gen Genet; 1976 Dec 22; 149(3):273-7. PubMed ID: 799245. Abstract: F-prime heterogenotes of dam-3 bacteria segregate F-prime homogenotes at a frequency 30-200 times higher than the isogenic dam+ strain. A hyperrecombination mutant which shows increased recombination between chromosomal duplications was characterized as a dam mutant. The dam-3 allele causes a reduction in linkage of proximal unselected markers in transconjugants and increases the recombination frequency between a pair of closely linked markers. It is concluded that dam mutations confer a hyperrecombination phenotype to the cell.[Abstract] [Full Text] [Related] [New Search]