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  • Title: Haemophilus influenzae and Vibrio cholerae genes for mutH are able to fully complement a mutH defect in Escherichia coli.
    Author: Friedhoff P, Sheybani B, Thomas E, Merz C, Pingoud A.
    Journal: FEMS Microbiol Lett; 2002 Feb 19; 208(1):123-8. PubMed ID: 11934505.
    Abstract:
    MutH, MutL and MutS are essential components of the mismatch repair system in Escherichia coli. Whereas mutS and mutL genes are found in most organisms, the mutH gene is limited to some proteobacteria. We show here that the cloned genes of MutH from Vibrio cholerae and Haemophilus influenzae are able to fully complement a mutH defect in E. coli. Moreover, the purified proteins were shown to be dam methylation sensitive endonucleases, which can be activated by the E. coli MutL protein. These results allow to narrow down regions that are important for the interaction of MutH with MutL.
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