CHEK2 phosphorylates TTC5 (Strap), a cofactor of TP53 (p53), on serine residue S221, resulting in TTC5 stabilization through an unknown mechanism (Adams et al. 2008).
Coutts, AS, Smith, L, Adams, CJ, Edelmann, M, Jansson, M, La Thangue, NB, Kessler, B, Graham, AL
protein serine/threonine kinase activity of p-S,3T-CHEK2 [nucleoplasm]
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