PMID:6381965: Difference between revisions
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'''Nakayama, H, Nakayama, K, Nakayama, R, Irino, N, Nakayama, Y and Hanawalt, PC''' (1984) Isolation and genetic characterization of a thymineless death-resistant mutant of Escherichia coli K12: identification of a new mutation (recQ1) that blocks the RecF recombination pathway.''Mol. Gen. Genet.'' '''195''':474-80 | '''Nakayama, H, Nakayama, K, Nakayama, R, Irino, N, Nakayama, Y and Hanawalt, PC''' (1984) Isolation and genetic characterization of a thymineless death-resistant mutant of Escherichia coli K12: identification of a new mutation (recQ1) that blocks the RecF recombination pathway. ''Mol. Gen. Genet.'' '''195''':474-80 | ||
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Chromosome Mapping; Escherichia coli; Genes, Bacterial; Genes, Recessive; Genetic Markers; Mutation; Phenotype; Plasmids; Recombination, Genetic; Thymine | Chromosome Mapping; Escherichia coli/genetics; Escherichia coli/metabolism; Genes, Bacterial; Genes, Recessive; Genetic Markers; Mutation; Phenotype; Plasmids; Recombination, Genetic; Thymine/metabolism | ||
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==Significance {{HelpIcon|Help:Literature}} == | ==Significance {{HelpIcon|Help:Literature}} == | ||
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Latest revision as of 04:49, 15 September 2013
| Citation |
Nakayama, H, Nakayama, K, Nakayama, R, Irino, N, Nakayama, Y and Hanawalt, PC (1984) Isolation and genetic characterization of a thymineless death-resistant mutant of Escherichia coli K12: identification of a new mutation (recQ1) that blocks the RecF recombination pathway. Mol. Gen. Genet. 195:474-80 |
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| Abstract |
An Escherichia coli K12 mutant resistant to thymineless death (TLD) was isolated, and its genetic analysis led us to identify a new mutation (recQ1) located between corA and metE on the standard linkage map. The mutation was found to result in increased sensitivity to ultraviolet light and deficiency in conjugational recombination when placed in the recBC sbcB background, indicating that it blocked the RecF pathway of recombination. It seemed likely that this mutation is also capable of causing partial resistance to TLD, but we reserve the possibility of a separate mutation closely linked to recQ1 giving rise to this phenotype. The original mutant was shown to carry an additional mutation probably in the vicinity of the uhp locus, which was also required for the full TLD resistance of the mutant to be expressed. |
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| Keywords |
Chromosome Mapping; Escherichia coli/genetics; Escherichia coli/metabolism; Genes, Bacterial; Genes, Recessive; Genetic Markers; Mutation; Phenotype; Plasmids; Recombination, Genetic; Thymine/metabolism |
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Note: recQ1 also blocks the RecF pathway due to deficiency in conjugational recombination when placed in the recBC sbcB background.
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