Alternative definition : KEGG: DNA mismatch repair (MMR) is a highly conserved biological pathway that plays
a key role in maintaining genomic stability. MMR corrects DNA mismatches generated
during DNA replication, thereby preventing mutations from becoming permanent in dividing
cells. MMR also suppresses homologous recombination and was recently shown to play
a role in DNA damage signaling. Defects in MMR are associated with genome-wide instability,
predisposition to certain types of cancer including HNPCC, resistance to certain chemotherapeutic
agents, and abnormalities in meiosis and sterility in mammalian systems.;