X-Nico

2 unusual facts about DNA mismatch repair


DNA mismatch repair

Specifically the overwhelming majority of hereditary nonpolyposis colorectal cancers (HNPCC) are attributed to mutations in the genes encoding the MutS and MutL homologues MSH2 and MLH1 respectively, which allows them to be classified as tumour suppressor genes.

It has weak ATPase activity, and binding of ATP leads to the formation of tertiary structures on the surface of the molecule.


DNA repair-deficiency disorder

Hereditary nonpolyposis colorectal cancer (HNPCC) is very often caused by a defective MSH2 gene leading to defective mismatch repair, but displays no symptoms of "accelerated aging".


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