Escherichia coli mutator mutD5 is the most potent mutator known. The mutD5 mutation
resides in the dnaQ gene encoding the proofreading exonuclease of DNA polymerase III …

We have previously reported that the Escherichia coli mutator strain mutD5 was defective in
the correction of bacteriophage M13mp2 heteroduplex DNA containing a TG mismatch …

To investigate the mechanisms of spontaneous mutation in the Escherichia coli mutD5
mutator strain, 502 mutations generated in this strain in the N-terminal part of the lacI gene …

The mutD (dnaQ) gene of Escherichia coli codes for the proofreading activity of DNA
polymerase III. The very strong mutator phenotype of mutD5 strains seems to indicate that …

The MutS protein of Escherichia coli is part of the dam-directed MutHLS mismatch repair
pathway which rectifies replication errors and which prevents recombination between …

Escherichia coli mutT strains are strong mutators yielding only A· T→ C· G transversion
mutations. These are thought to result from uncorrected (or unprevented) A· G mispairings …

DNA mismatch repair in Escherichia coli has been shown to be involved in two distinct
processes: mutation avoidance, which removes potential mutations arising as replication …

The products of the mutD and mutL genes of Escherichia coli are involved in proofreading
by DNA polymerase III and DNA adenine MTase (Dam)-dependent mismatch repair …

The mutL gene product is part of the dam-directed mismatch repair system of Escherichia
coli but has no known enzymatic function. It forms a complex on heteroduplex DNA with the …

The Dam-directed post-replicatve mismatch repair system of Escherichia coli removes base
pair mismatches from DNA. The products of the mutH, mutL and mutS genes, among others …