1Q2I

NMR SOLUTION STRUCTURE OF A PEPTIDE FROM THE MDM-2 BINDING DOMAIN OF THE P53 PROTEIN THAT IS SELECTIVELY CYTOTOXIC TO CANCER CELLS


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy,target function 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

NMR solution structure of a peptide from the mdm-2 binding domain of the p53 protein that is selectively cytotoxic to cancer cells

Rosal, R.Pincus, M.R.Brandt-Rauf, P.W.Fine, R.L.Michl, J.Wang, H.

(2004) Biochemistry 43: 1854-1861

  • DOI: 10.1021/bi035718g
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • We have recently found that a peptide from the mdm-2 binding domain of the p53 protein induced rapid membranolytic necrosis of a variety of different human cancer cell lines. To determine the role of solution structure in this peptide's selective and ...

    We have recently found that a peptide from the mdm-2 binding domain of the p53 protein induced rapid membranolytic necrosis of a variety of different human cancer cell lines. To determine the role of solution structure in this peptide's selective and rapid tumor membrane disruptive behavior, we have performed two-dimensional NMR on a 32-residue sequence called PNC-27, in both an aqueous cytosolic-like and a mixed organic membrane-mimetic solution environment. In an aqueous milieu, PNC-27 contains three alpha-helical domains connected by loop structures, forming an S shape, and another similar structure with less helical structure. In a solution environment simulating a membrane, the helical domains found in water increase in length, forming three classes of structures, all of which form a U-shaped helix-coil-helix ensemble. In both solvent systems, this peptide forms amphipathic structures such that its hydrophobic residues coalesce on one face while the polar residues aggregate on the opposite face. The ability to form these unique structures in these two solution environments may allow the PNC-27 peptide to selectively and rapidly disrupt cancer cell membranes.


    Organizational Affiliation

    Department of Environmental Health Sciences, Mailman School of Public Health of Columbia University, 60 Haven Avenue, New York, New York 10032, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PNC27
A
32N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy,target function 
  • Olderado: 1Q2I Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-03-16
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance