This year, we provided the first comprehensive comparison of the efficiency of MMR of leading and lagging strand replication errors. We demonstrated that exonuclease 1 preferentially repairs mismatches generated by DNA polymerase alpha. We provided strong evidence that ribonucleotides are signals for mismatch repair of leading strand replication errors. Finally, we collaborated with Winfried Edelmann on a study indicating that mouse Exo1 encodes both structural and catalytic functions that play distinct roles in several essential biological processes.

Project Start
Project End
Budget Start
Budget End
Support Year
17
Fiscal Year
2013
Total Cost
$1,718,308
Indirect Cost
City
State
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Zip Code
Lujan, Scott A; Williams, Jessica S; Clausen, Anders R et al. (2013) Ribonucleotides are signals for mismatch repair of leading-strand replication errors. Mol Cell 50:437-43