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Where cancer meets calcium — p53 crosstalk with EF-hands

S100B, an EF-hand Ca2+-binding protein, grasps the C-terminus of the tumor suppressor p53 and inhibits protein kinase C-dependent phosphorylation and acetylation of p53 in a Ca2+-dependent manner. The mode of interaction between S100B and p53 is different from the interactions seen in S100A–annexin complex structures.

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Figure 1: A proposed action of S100B in p53 function.
Figure 2: Solved structures of p53 domains alone and in complex with interacting proteins.
Figure 3: Structures of S100–target peptide complexes.

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Correspondence to Mitsuhiko Ikura.

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Ikura, M., Yap, K. Where cancer meets calcium — p53 crosstalk with EF-hands. Nat Struct Mol Biol 7, 525–527 (2000). https://doi.org/10.1038/76721

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