The solution structure of the p63 DNA-binding domain

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 21 
  • Selection Criteria: structures with the least restraint violations 

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This is version 1.2 of the entry. See complete history


Solution structure and binding specificity of the p63 DNA binding domain

Enthart, A.Klein, C.Dehner, A.Coles, M.Gemmecker, G.Kessler, H.Hagn, F.

(2016) Sci Rep 6: 26707-26707

  • DOI: https://doi.org/10.1038/srep26707
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    p63 is a close homologue of p53 and, together with p73, is grouped into the p53 family of transcription factors. p63 is known to be involved in the induction of controlled apoptosis important for differentiation processes, germ line integrity and development. Despite its high homology to p53, especially within the DNA binding domain (DBD), p63-DBD does not show cooperative DNA binding properties and is significantly more stable against thermal and chemical denaturation. Here, we determined the solution structure of p63-DBD and show that it is markedly less dynamic than p53-DBD. In addition, we also investigate the effect of a double salt bridge present in p53-DBD, but not in p63-DBD on the cooperative binding behavior and specificity to various DNA sites. Restoration of the salt bridges in p63-DBD by mutagenesis leads to enhanced binding affinity to p53-specific, but not p63-specific response elements. Furthermore, we show that p63-DBD is capable of binding to anti-apoptotic BclxL via its DNA binding interface, a feature that has only been shown for p53 so far. These data suggest that all p53 family members - despite alterations in the specificity and binding affinity - are capable of activating pro-apoptotic pathways in a tissue specific manner.

  • Organizational Affiliation

    Center for Integrated Protein Science Munich (CIPSM) at the Department Chemie, Technische Universität München, 85747 Garching, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Tumor protein 63233Homo sapiensMutation(s): 0 
Gene Names: P63TP63KETP73HP73LTP73L
UniProt & NIH Common Fund Data Resources
Find proteins for Q9H3D4 (Homo sapiens)
Explore Q9H3D4 
Go to UniProtKB:  Q9H3D4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9H3D4
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on ZN

Download Ideal Coordinates CCD File 
B [auth A]ZINC ION
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 21 
  • Selection Criteria: structures with the least restraint violations 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-11-11
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2016-09-07
    Changes: Database references