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. 1995 Feb 24;267(5201):1166-9.
doi: 10.1126/science.7855597.

A role for exonuclease I from S. pombe in mutation avoidance and mismatch correction

P Szankasi  1 , G R Smith
Affiliations

A role for exonuclease I from S. pombe in mutation avoidance and mismatch correction

P Szankasi et al. Science. .

Abstract

Exonuclease I (Exo I) from Schizosaccharomyces pombe, a 5'-->3' double-stranded DNA exonuclease, is induced during meiotic prophase I. The exo1 gene is a member of a family of related DNA repair genes, including RAD2/rad13/xpgc and YKL510/rad2, conserved from yeast to humans. An exo1 mutant displays a mutator phenotype and alters activity of the ade6-M387 marker effect. These results suggest that Exo I acts in a pathway that corrects mismatched base pairs.

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