2MPS

Structure of complex of MDM2(3-109) and P73 TAD(10-25)


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Structural convergence of unstructured p53 family transactivation domains in MDM2 recognition

Shin, J.S.Ha, J.H.Lee, D.H.Ryu, K.S.Bae, K.H.Park, B.C.Park, S.G.Yi, G.S.Chi, S.W.

(2015) Cell Cycle 14: 533-543

  • DOI: 10.1080/15384101.2014.998056
  • Primary Citation of Related Structures:  
    2MPS

  • PubMed Abstract: 
  • The p53, p63, and p73 proteins belong to the p53 family of transcription factors, which play key roles in tumor suppression. Although the transactivation domains (TADs) of the p53 family are intrinsically disordered, these domains are commonly involved in the regulatory interactions with mouse double minute 2 (MDM2) ...

    The p53, p63, and p73 proteins belong to the p53 family of transcription factors, which play key roles in tumor suppression. Although the transactivation domains (TADs) of the p53 family are intrinsically disordered, these domains are commonly involved in the regulatory interactions with mouse double minute 2 (MDM2). In this study, we determined the solution structure of the p73TAD peptide in complex with MDM2 using NMR spectroscopy and biophysically characterized the interactions between the p53 family TAD peptides and MDM2. In combination with mutagenesis data, the complex structures revealed remarkably close mimicry of the MDM2 recognition mechanism among the p53 family TADs. Upon binding with MDM2, the intrinsically disordered p73TAD and p63TAD peptides adopt an amphipathic α-helical conformation, which is similar to the conformation of p53TAD, although the α-helical content induced by MDM2 binding varies. With isothermal titration calorimetry (ITC) and circular dichroism (CD) data, our biophysical characterization showed that p73TAD resembles p53TAD more closely than p63TAD in terms of helical stability, MDM2 binding affinity, and phosphorylation effects on MDM2 binding. Therefore, our structural information may be useful in establishing alternative anticancer strategies that exploit the activation of the p73 pathway against human tumors bearing p53 mutations.


    Organizational Affiliation

    a Structural Biology & Nanopore Research Laboratory; Functional Genomics Research Center; KRIBB ; Daejeon , Republic of Korea.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
E3 ubiquitin-protein ligase Mdm2A107Homo sapiensMutation(s): 0 
Gene Names: MDM2
EC: 6.3.2 (PDB Primary Data), 2.3.2.27 (UniProt)
Find proteins for Q00987 (Homo sapiens)
Explore Q00987 
Go to UniProtKB:  Q00987
NIH Common Fund Data Resources
PHAROS:  Q00987
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Tumor protein p73B16Homo sapiensMutation(s): 0 
Gene Names: P73TP73
Find proteins for O15350 (Homo sapiens)
Explore O15350 
Go to UniProtKB:  O15350
NIH Common Fund Data Resources
PHAROS:  O15350
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2MPS Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-06-03
    Type: Initial release