Molecular cloning and nucleotide sequence of the mutT mutator of Escherichia coli that causes A:T to C:G transversion.
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Akiyama M, Horiuchi T, Sekiguchi M
Molecular cloning and nucleotide sequence of the mutT mutator of Escherichia coli that causes A:T to C:G transversion.
Mol Gen Genet. 1987 Jan;206(1):9-16.
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- 3033442 [ View in PubMed]
- Abstract
The Escherichia coli mutator gene mutT, which causes A:T----C:G transversion, was cloned in pBR 322. mutT+ plasmids carry a 0.9 kb PvuII DNA fragment derived from the E. coli chromosome. Specific labelling of plasmid-encoded proteins by the maxicell method revealed that mutT codes for a polypeptide of about 15,000 daltons. The protein was overproduced when the mutT gene was placed under the control of the lac regulatory region on a multicopy runaway plasmid. The nucleotide sequence of the mutT gene was determined by the dideoxy method.