Abstract
DNA Mismatch Repair (MMR) system is one of DNA damage repair pathways, existing in all organisms from bacteria, yeast to human. This system consists of a group of highly-conserved enzymatic proteins. The well-studied function of MMR proteins is to maintain the stability of the genomes by correcting basebase mismatches and insertion/deletion loops generated during DNA replication and recombination. Increasing numbers of researches have revealed that the MMR proteins have multiple roles, including regulation of DNA damage response, homologous recombination, meiotic chromosome pairing and segregation, diversification of antibody and tri-nucleotide repeat expansion. This review is about the resent progress in the study of the versatilities of DNA mismatch repair proteins. Key words: DNA mismatch repair system; Mismatch repair proteins; Versatilities
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