Figure 1.

The mismatch repair system (MMR). A. Based on figure 3 from Bellacosa et al [8]. Initiation of MMR by recognizing the DNA damage by the MutSα or β complex and recruiting the MutLα complex. B. Excision of the damaged strand and resynthesis in which exonuclease ExoI, proliferating cell nuclear antigen (PCNA), DNA polymerase δ or ε and DNA helicase I are suggested to play a role.

Helleman et al. BMC Cancer 2006 6:201   doi:10.1186/1471-2407-6-201
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