Plk1 Phosphorylation of TRF1 Is Essential for Its Binding to Telomeres

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Plk1 phosphorylation of TRF1 is essential for its binding to telomeres.

In a search for Polo-like kinase 1 (Plk1) interaction proteins, we have identified TRF1 (telomeric repeat binding factor 1) as a potential Plk1 target. In this communication we report further characterization of the interaction. We show that Plk1 associates with TRF1, and Plk1 phosphorylates TRF1 at Ser-435 in vivo. Moreover, Cdk1, serving as a priming kinase, phosphorylates TRF1 to generate a ...

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ژورنال

عنوان ژورنال: Journal of Biological Chemistry

سال: 2008

ISSN: 0021-9258

DOI: 10.1074/jbc.m803304200