Macromolecule Content

• Total Structure Weight: 1061.28 
• Atom Count: 72 
• Residue Count: 11 
• Unique protein chains: 1

1QYT

Solution structure of fragment (25-35) of beta amyloid peptide in SDS micellar solution

• DOI: 10.2210/pdb1QYT/pdb

• Classification: PROTEIN BINDING
• Organism(s): Homo sapiens


• Deposited: 2003-09-12 Released: 2004-12-14 
• Deposition Author(s): D'Ursi, A.M., Armenante, M.R., Guerrini, R., Salvadori, S., Sorrentino, G., Picone, D.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 30 
• Conformers Submitted: 21 
• Selection Criteria: all calculated structures submitted 

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

• PubMed: 15293994 
• DOI: 10.1021/jm040773o
• Primary Citation of Related Structures:  
  1QXC, 1QWP


• 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. 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.

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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
Molecule	Chains	Sequence Length	Organism	Details
11-mer peptide from Amyloid beta A4 protein	A	11	Homo sapiens	Mutation(s): 0  Gene Names: APP (A4, AD1)
Find proteins for P05067 (Homo sapiens) Go to Gene View: APP Go to UniProtKB:  P05067

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 30 
• Conformers Submitted: 21 
• Selection Criteria: all calculated structures submitted 
• Olderado: 1QYT Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-09-12 
• Released Date: 2004-12-14 
• Deposition Author(s): D'Ursi, A.M., Armenante, M.R., Guerrini, R., Salvadori, S., Sorrentino, G., Picone, D.

Revision History 

• Version 1.0: 2004-12-14
  Type: Initial release
• Version 1.1: 2008-04-29
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance