Biochemical basis for dominant mutations in the Saccharomyces cerevisiae MSH6 gene

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Biochemical basis for dominant mutations in the Saccharomyces cerevisiae MSH6 gene.

Here, the ATP-binding, ATP hydrolysis, mispair-binding, sliding clamp formation, and Mlh1-Pms1 complex interaction properties of dominant mutant Msh2-Msh6 complexes have been characterized. The results demonstrate two mechanisms for dominance. In one, seen with the Msh6-S1036P and Msh6-G1067D mutant complexes, the mutant complex binds mispaired bases, is defective for ATP-induced sliding clamp ...

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In Saccharomyces cerevisiae, Msh2p, a central component in mismatch repair, forms a heterodimer with Msh3p to repair small insertion/deletion mismatches and with Msh6p to repair base pair mismatches and single-nucleotide insertion/deletion mismatches. In haploids, a msh2Delta mutation is synthetically lethal with pol3-01, a mutation in the Poldelta proofreading exonuclease. Six conditional alle...

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 2006

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.0510078103