2K5X

Chemical shift structure of COLICIN E9 DNASE domain with its cognate immunity protein IM9


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 500 
  • Conformers Submitted: 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure Determination of Protein-Protein Complexes Using NMR Chemical Shifts: Case of an Endonuclease Colicin-Immunity Protein Complex

Montalvao, R.W.Cavalli, A.Salvatella, X.Blundell, T.L.Vendruscolo, M.

(2008) J.Am.Chem.Soc. 130: 15990-15996

  • DOI: 10.1021/ja805258z

  • PubMed Abstract: 
  • Nuclear magnetic resonance (NMR) spectroscopy provides a range of powerful techniques for determining the structures and the dynamics of proteins. The high-resolution determination of the structures of protein-protein complexes, however, is still a c ...

    Nuclear magnetic resonance (NMR) spectroscopy provides a range of powerful techniques for determining the structures and the dynamics of proteins. The high-resolution determination of the structures of protein-protein complexes, however, is still a challenging problem for this approach, since it can normally provide only a limited amount of structural information at protein-protein interfaces. We present here the determination using NMR chemical shifts of the structure (PDB code 2K5X) of the cytotoxic endonuclease domain from bacterial toxin colicin (E9) in complex with its cognate immunity protein (Im9). In order to achieve this result, we introduce the CamDock method, which combines a flexible docking procedure with a refinement that exploits the structural information provided by chemical shifts. The results that we report thus indicate that chemical shifts can be used as structural restraints for the determination of the conformations of protein complexes that are difficult to obtain by more standard NMR approaches.


    Organizational Affiliation

    Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Colicin-E9 immunity protein
A
86Escherichia coliMutation(s): 0 
Gene Names: imm (ceiE9)
Find proteins for P13479 (Escherichia coli)
Go to UniProtKB:  P13479
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Colicin-E9
B
134Escherichia coliMutation(s): 0 
Gene Names: col (cei)
EC: 3.1.-.-
Find proteins for P09883 (Escherichia coli)
Go to UniProtKB:  P09883
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 500 
  • Conformers Submitted: 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-12-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance