6IM9

MDM2 bound CueO-PM2 sensor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.180 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Development and structural characterization of an engineered multi-copper oxidase reporter of protein-protein interactions.

Sana, B.Chee, S.M.Q.Wongsantichon, J.Raghavan, S.Robinson, R.C.Ghadessy, F.J.

(2019) J Biol Chem 294: 7002-7012

  • DOI: 10.1074/jbc.RA118.007141
  • Primary Citation of Related Structures:  
    6IM7, 6IM9, 6IM8

  • PubMed Abstract: 
  • Protein-protein interactions (PPIs) are ubiquitous in almost all biological processes and are often corrupted in diseased states. A detailed understanding of PPIs is therefore key to understanding cellular physiology and can yield attractive therapeu ...

    Protein-protein interactions (PPIs) are ubiquitous in almost all biological processes and are often corrupted in diseased states. A detailed understanding of PPIs is therefore key to understanding cellular physiology and can yield attractive therapeutic targets. Here, we describe the development and structural characterization of novel Escherichia coli CueO multi-copper oxidase variants engineered to recapitulate protein-protein interactions with commensurate modulation of their enzymatic activities. The fully integrated single-protein sensors were developed through modular grafting of ligand-specific peptides into a highly compliant and flexible methionine-rich loop of CueO. Sensitive detection of diverse ligand classes exemplified by antibodies, an E3 ligase, MDM2 proto-oncogene (MDM2), and protease (SplB from Staphylococcus aureus ) was achieved in a simple mix and measure homogeneous format with visually observable colorimetric readouts. Therapeutic antagonism of MDM2 by small molecules and peptides in clinical development for treatment of cancer patients was assayed using the MDM2-binding CueO enzyme. Structural characterization of the free and MDM2-bound CueO variant provided functional insight into signal-transducing mechanisms of the engineered enzymes and highlighted the robustness of CueO as a stable and compliant scaffold for multiple applications.


    Organizational Affiliation

    From the p53 Laboratory, Agency for Science, Technology, and Research (A*STAR), 8A Biomedical Grove, Singapore 138648, Singapore, fghadessy@p53Lab.a-star.edu.sg.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Blue copper oxidase CueO,PM2 peptide,Blue copper oxidase CueOA509Escherichia coli K-12synthetic constructMutation(s): 1 
Gene Names: cueOyacKb0123JW0119
Find proteins for P36649 (Escherichia coli (strain K12))
Explore P36649 
Go to UniProtKB:  P36649
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
E3 ubiquitin-protein ligase Mdm2B122Homo sapiensMutation(s): 0 
Gene Names: MDM2
EC: 2.3.2.27
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
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.180 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 83.636α = 90
b = 83.636β = 90
c = 240.171γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
PHENIXrefinement
HKL-2000data scaling
PDB_EXTRACTdata extraction
HKL-2000data reduction
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2019-03-20
    Type: Initial release
  • Version 1.1: 2019-08-07
    Changes: Data collection, Database references