6IM9

MDM2 bound CueO-PM2 sensor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.3 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.177 

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:  

  • 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

    the Institute of Molecular and Cellular Biology, A*STAR, 61 Biopolis Drive, Singapore 138673, Singapore.,the Mahidol-Oxford Tropical Medicine Research Unit, Mahidol University, Bangkok 10400, Thailand, and.,From the p53 Laboratory, Agency for Science, Technology, and Research (A*STAR), 8A Biomedical Grove, Singapore 138648, Singapore.,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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Blue copper oxidase CueO,PM2 peptide,Blue copper oxidase CueO
A
509Escherichia coli (strain K12)Mutation(s): 1 
Gene Names: cueO (yacK)
Find proteins for P36649 (Escherichia coli (strain K12))
Go to UniProtKB:  P36649
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
E3 ubiquitin-protein ligase Mdm2
B
122Homo sapiensMutation(s): 0 
Gene Names: MDM2
EC: 2.3.2.27
Find proteins for Q00987 (Homo sapiens)
Go to Gene View: MDM2
Go to UniProtKB:  Q00987
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.3 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.177 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 83.636α = 90.00
b = 83.636β = 90.00
c = 240.171γ = 120.00
Software Package:
Software NamePurpose
MOLREPphasing
HKL-2000data reduction
PHENIXrefinement
HKL-2000data scaling
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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