1QWP

NMR analysis of 25-35 fragment of beta amyloid peptide


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: back calculated data agree with experimental NOESY spectrum 

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This is version 1.2 of the entry. See complete history


Literature

Solution structure of amyloid beta-peptide (25-35) in different media

D'Ursi, A.M.Armenante, M.R.Guerrini, R.Salvadori, S.Sorrentino, G.Picone, D.

(2004) J Med Chem 47: 4231-4238

  • DOI: 10.1021/jm040773o
  • Primary Citation of Related Structures:  
    1QWP, 1QXC, 1QYT

  • PubMed Abstract: 
  • The design of molecules able to interact with the amyloid peptides either as inhibitors of fibril formation or as inhibitors of amyloid membrane pore formation represents one of the most relevant approaches in the development of anti-Alzheimer therapies. Abeta-(25-35), sequence GSNKGAIIGLM, is a highly toxic synthetic derivative of amyloid beta-peptides (Abeta-peptides), which forms fibrillary aggregates ...

    The design of molecules able to interact with the amyloid peptides either as inhibitors of fibril formation or as inhibitors of amyloid membrane pore formation represents one of the most relevant approaches in the development of anti-Alzheimer therapies. Abeta-(25-35), sequence GSNKGAIIGLM, is a highly toxic synthetic derivative of amyloid beta-peptides (Abeta-peptides), which forms fibrillary aggregates. Here, we report the NMR and CD investigation of Abeta-(25-35) in a membrane-mimicking environment and in isotropic mixtures of water and fluoro-alcohols to scan its conformational properties as a function of the medium. The analysis of the 3D structures in the mentioned conditions indicates a propensity of the peptide to behave as a typical transmembrane helix in the lipidic environment. In media characterized by different polarity, it loses the structural regularity at specific points of the sequence as a function of the environment. Furthermore, a comparison with the solution structure of full-length amyloid peptides suggests a role for the 25-27 kink region, which appears to be a general feature of all peptides under the solution conditions explored.


    Organizational Affiliation

    Dipartimento di Scienze Farmaceutiche, Università di Salerno, Via Ponte Don Melillo 11c, 84084 Fisciano, Italy.



Macromolecules
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
11-mer peptide from Amyloid beta A4 protein A11N/AMutation(s): 0 
Find proteins for P05067 (Homo sapiens)
Explore P05067 
Go to UniProtKB:  P05067
NIH Common Fund Data Resources
PHAROS:  P05067
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: back calculated data agree with experimental NOESY spectrum 
  • OLDERADO: 1QWP Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-09-14
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance