1G04

SOLUTION STRUCTURE OF SYNTHETIC 26-MER PEPTIDE CONTAINING 145-169 SHEEP PRION PROTEIN SEGMENT AND C-TERMINAL CYSTEINE


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 1000 
  • Conformers Submitted: 21 
  • Selection Criteria: structures with favorable non-bond energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Sheep prion protein synthetic peptide spanning helix 1 and beta-strand 2 (residues 142-166) shows beta-hairpin structure in solution.

Kozin, S.A.Bertho, G.Mazur, A.K.Rabesona, H.Girault, J.P.Haertle, T.Takahashi, M.Debey, P.Hoa, G.H.

(2001) J.Biol.Chem. 276: 46364-46370

  • DOI: 10.1074/jbc.M108014200

  • PubMed Abstract: 
  • According to the "protein only" hypothesis, a conformational conversion of the non-pathogenic "cellular" prion isoform into a pathogenic "scrapie" isoform is the fundamental event in the onset of prion diseases. During this pathogenic conversion, hel ...

    According to the "protein only" hypothesis, a conformational conversion of the non-pathogenic "cellular" prion isoform into a pathogenic "scrapie" isoform is the fundamental event in the onset of prion diseases. During this pathogenic conversion, helix H1 and two adjacent surface loops L2 and L3 of the normal prion protein are thought to undergo a conformational transition into an extended beta-like structure, which is prompted by interactions with the pre-existing beta-sheet. To get more insight into the interaction between the helix and one of the beta-strands in the partially unfolded prion protein, the solution structure of a synthetic linear peptide spanning helix H1 and beta-strand S2 (residues 142-166 in human numbering) was studied by circular dichroism and nuclear magnetic resonance spectroscopies. We found that, in contrast to many prion fragments studied earlier, this peptide (i) is highly soluble and does not aggregate up to a millimolar concentration range in aqueous medium and (ii) exhibits an intrinsic propensity to a beta-hairpin like conformation at neutral pH. This beta-propensity can be one of the internal driving forces of the molecular rearrangement responsible for the pathogenic conversion of the prion protein.


    Organizational Affiliation

    Institut National de la Recherche Agronomique 806, Muséum National d'Histoire Naturelle (EA 2703), Institut de Biologie Physico-Chimique, 13 rue Pierre et Marie Curie, 75005 Paris, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MAJOR PRION PROTEIN
A
26Ovis ariesMutation(s): 0 
Gene Names: PRNP (PRP, SIP)
Find proteins for P23907 (Ovis aries)
Go to Gene View: PRNP
Go to UniProtKB:  P23907
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 1000 
  • Conformers Submitted: 21 
  • Selection Criteria: structures with favorable non-bond energy 
  • Olderado: 1G04 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-01-23
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance