Macromolecule Content

• Total Structure Weight: 14.32 kDa 
• Atom Count: 995 
• Residue Count: 129 
• Unique protein chains: 2

2K8F

Structural Basis for the Regulation of p53 Function by p300

• DOI: 10.2210/pdb2K8F/pdb
• BMRB: 15944

• Classification: Transferase/Transcription
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2008-09-08 Released: 2009-03-03 
• Deposition Author(s): Bai, Y., Feng, H., Jenkins, L.M., Durell, S.R., Wiodawer, A., Appella, E.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 10 
• Selection Criteria: structures with the lowest energy 

Literature

Structural Basis for p300 Taz2-p53 TAD1 Binding and Modulation by Phosphorylation.

Feng, H., Jenkins, L.M., Durell, S.R., Hayashi, R., Mazur, S.J., Cherry, S., Tropea, J.E., Miller, M., Wlodawer, A., Appella, E., Bai, Y.

(2009) Structure 17: 202-210

• PubMed: 19217391 
• DOI: 10.1016/j.str.2008.12.009
• Primary Citation of Related Structures:  
  2K8F


• PubMed Abstract: 
  

Coactivators CREB-binding protein and p300 play important roles in mediating the transcriptional activity of p53. Until now, however, no detailed structural information has been available on how any of the domains of p300 interact with p53. Here, we report the NMR structure of the complex of the Taz2 (C/H3) domain of p300 and the N-terminal transactivation domain of p53. In the complex, p53 forms a short alpha helix and interacts with the Taz2 domain through an extended surface. Mutational analyses demonstrate the importance of hydrophobic residues for complex stabilization. Additionally, they suggest that the increased affinity of Taz2 for p53(1-39) phosphorylated at Thr(18) is due in part to electrostatic interactions of the phosphate with neighboring arginine residues in Taz2. Thermodynamic experiments revealed the importance of hydrophobic interactions in the complex of Taz2 with p53 phosphorylated at Ser(15) and Thr(18).

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Organizational Affiliation: 

Laboratory of Biochemistry and Molecular Biology, National Cancer Institute, NIH, Bethesda, MD 20892, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Histone acetyltransferase p300	A	90	Homo sapiens	Mutation(s): 4  Gene Names: EP300, P300 EC: 2.3.1.48 (PDB Primary Data), 2.3.1 (UniProt)
Find proteins for Q09472 (Homo sapiens) Explore Q09472  Go to UniProtKB:  Q09472
NIH Common Fund Data Resources
PHAROS  Q09472 GTEx  ENSG00000100393

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Cellular tumor antigen p53	B	39	Homo sapiens	Mutation(s): 0  Gene Names: TP53, P53
Find proteins for P04637 (Homo sapiens) Explore P04637  Go to UniProtKB:  P04637
NIH Common Fund Data Resources
PHAROS  P04637 GTEx  ENSG00000141510

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 10 
• Selection Criteria: structures with the lowest energy 
• OLDERADO: 2K8F Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2008-09-08 
• Released Date: 2009-03-03 
Deposition Author(s): Bai, Y., Feng, H., Jenkins, L.M., Durell, S.R., Wiodawer, A., Appella, E.

Revision History 

• Version 1.0: 2009-03-03
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance