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J Mol Biol. 1986 May 20;189(2):261-72.

Isolation of bacteriophage T4 DNA polymerase mutator mutants.


More than 20 new bacteriophage T4 DNA polymerase mutants have been isolated by a procedure designed to select mutants with high spontaneous mutation rates. Some of the mutants produce the highest mutation frequencies that have been observed in T4 thus far. The design of the selection procedure allows for the isolation of mutator mutants that preferentially induce certain types of replication errors, and some of the mutator mutants have mutational specificities different from wild-type. The new mutants are clustered at just two sites in the DNA polymerase gene, and this result confirms an earlier observation.

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