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    Genes Dev. 2008 Apr 1;22(7):854-9. Epub 2008 Mar 11.

    Tel2 mediates activation and localization of ATM/Tel1 kinase to a double-strand break.

    Anderson CM, Korkin D, Smith DL, Makovets S, Seidel JJ, Sali A, Blackburn EH.

    Department of Biochemistry, University of California, San Francisco, California 94143, USA.

    The kinases ATM and ATR (Tel1 and Mec1 in the yeast Saccharomyces cerevisiae) control the response to DNA damage. We report that S. cerevisiae Tel2 acts at an early step of the TEL1/ATM pathway of DNA damage signaling. We show that Tel1 and Tel2 interact, and that even when Tel1 protein levels are high, this interaction is specifically required for Tel1 localization to a DNA break and its activation of downstream targets. Computational analysis revealed structural homology between Tel2 and Ddc2 (ATRIP in vertebrates), a partner of Mec1, suggesting a common structural principle used by partners of phoshoinositide 3-kinase-like kinases.

    PMID: 18334620 [PubMed - indexed for MEDLINE]

    PMCID: 2279195

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