Download MendeleyTarget structure-based discovery of small molecules that block human p53 and CREB binding protein association
Sachchidanand, Resnick-Silverman, L., Yan, S., Mutjaba, S., Liu, W.J., Zeng, L., Manfredi, J.J., Zhou, M.M.(2006) Chem Biol 13: 81-90
- PubMed: 16426974
- DOI: https://doi.org/10.1016/j.chembiol.2005.10.014
- Primary Citation of Related Structures:
2D82 - PubMed Abstract:
Lysine acetylation of human tumor suppressor p53 in response to cellular stress signals is required for its function as a transcription factor that regulates cell cycle arrest, senescence, or apoptosis. Here, we report small molecules that block lysine 382-acetylated p53 association with the bromodomain of the coactivator CBP, an interaction essential for p53-induced transcription of the cell cycle inhibitor p21 in response to DNA damage. These chemicals were discovered in target structure-guided nuclear magnetic resonance spectroscopy screening of a focused chemical library constructed based on the structural knowledge of CBP bromodomain/p53-AcK382 binding. Structural characterization shows that these chemicals inhibit CBP/p53 association by binding to the acetyl-lysine binding site of the bromodomain. Cell-based functional assays demonstrate that the lead chemicals can modulate p53 stability and function in response to DNA damage.
Organizational Affiliation:
Structural Biology Program, Department of Physiology and Biophysics, Mount Sinai School of Medicine, New York University, New York 10029, USA.
