Download MendeleyStructural mechanism of the bromodomain of the coactivator CBP in p53 transcriptional activation.
Mujtaba, S., He, Y., Zeng, L., Yan, S., Plotnikova, O., Sachchidanand, Sanchez, R., Zeleznik-Le, N.J., Ronai, Z., Zhou, M.M.(2004) Mol Cell 13: 251-263
- PubMed: 14759370
- DOI: https://doi.org/10.1016/s1097-2765(03)00528-8
- Primary Citation of Related Structures:
1JSP - PubMed Abstract:
Lysine acetylation of the tumor suppressor protein p53 in response to a wide variety of cellular stress signals is required for its activation as a transcription factor that regulates cell cycle arrest, senescence, or apoptosis. Here, we report that the conserved bromo-domain of the transcriptional coactivator CBP (CREB binding protein) binds specifically to p53 at the C-terminal acetylated lysine 382. This bromodomain/acetyl-lysine binding is responsible for p53 acetylation-dependent coactivator recruitment after DNA damage, a step essential for p53-induced transcriptional activation of the cyclin-dependent kinase inhibitor p21 in G1 cell cycle arrest. We further present the three-dimensional nuclear magnetic resonance structure of the CBP bromodomain in complex with a lysine 382-acetylated p53 peptide. Using structural and biochemical analyses, we define the molecular determinants for the specificity of this molecular recognition.
Organizational Affiliation:
Department of Physiology and Biophysics, New York University, 1425 Madison Avenue, New York, NY 10029, USA.
