Vol. 187 No. 7, December 28, 2009. Pages 977–990.
In Fig. S2 B of the original paper, the peptide sequence for CHK2 was erroneously shown instead of that of ATM. The correct phosphopeptide derived from the ATM autophosphorylated Ser1981 is SGSG-SLAFEEGpSQSTTISS (with and without the pSerine). The authors apologize for this mistake.