1NMJ

The Solution Structure of Rat Ab-(1-28) and its Interaction with Zinc: Insights into the Scarity of Amyloid Deposition in Aged Rat Brain


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The solution structure of rat Abeta-(1-28) and its interaction with zinc ion: insights into the scarcity of amyloid deposition in aged rat brain

Huang, J.Yao, Y.Lin, J.Ye, Y.H.Sun, W.Y.Tang, W.X.

(2004) J.Biol.Inorg.Chem. 9: 627-635

  • DOI: 10.1007/s00775-004-0556-x

  • PubMed Abstract: 
  • The amyloid beta-peptide (Abeta) is a major component of insoluble amyloid deposits in Alzheimer's disease, and the ability of the beta-peptide to exist in different conformations is dependent on residues 1-28 [beta-(1-28)]. However, different from h ...

    The amyloid beta-peptide (Abeta) is a major component of insoluble amyloid deposits in Alzheimer's disease, and the ability of the beta-peptide to exist in different conformations is dependent on residues 1-28 [beta-(1-28)]. However, different from humans, no Abeta amyloid deposition has been found in aged rats' brains. Studying the three-dimensional solution structure of rat Abeta-(1-28) and the binding circumstance of Zn(2+) is beneficial to a clear understanding of the potential role of Zn(2+) in Alzheimer-associated neuropathogenesis and to suggest why there is no amyloid deposition in aged rats' brains. Here we used nuclear magnetic resonance (NMR) spectroscopy to determine the solution structure of rat Abeta-(1-28) and the binding constant of Zn(2+) to rat Abeta-(1-28). Our results suggest that (1) the three-dimensional solution structure of rat Abeta-(1-28) is more stable than that of human Abeta-(1-28) in DMSO- d(6) and that a helical region from Glu16 to Val24 exists in the rat Abeta-(1-28); (2) the affinity of Zn(2+) for rat Abeta-(1-28) is lower than that for human Abeta-(1-28) and the NMR data suggest that Arg13, His6, and His14 residues provide the primary binding sites for Zn(2+); and (3) the proper binding of Zn(2+) to rat Abeta-(1-28) can induce the peptide to change to a more stable conformation.


    Organizational Affiliation

    Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, Nanjing University, 210093 Nanjing, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
amyloid beta-peptide from Alzheimer's disease amyloid A4 protein homolog
A
28Rattus norvegicusMutation(s): 0 
Gene Names: App
Find proteins for P08592 (Rattus norvegicus)
Go to UniProtKB:  P08592
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-01-28
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance