1Y32

NMR structure of humanin in 30% TFE solution


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 300 
  • Conformers Submitted: 14 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution structure of humanin, a peptide against Alzheimer's disease-related neurotoxicity.

Benaki, D.Zikos, C.Evangelou, A.Livaniou, E.Vlassi, M.Mikros, E.Pelecanou, M.

(2005) Biochem.Biophys.Res.Commun. 329: 152-160

  • DOI: 10.1016/j.bbrc.2005.01.100
  • Also Cited By: 2GD3

  • PubMed Abstract: 
  • Humanin is a newly identified 24-residue peptide that suppresses neuronal cell death caused by a wide spectrum of familial Alzheimer's disease genes and the beta-amyloid peptide. In this study, NMR and circular dichroism studies of synthetic humanin ...

    Humanin is a newly identified 24-residue peptide that suppresses neuronal cell death caused by a wide spectrum of familial Alzheimer's disease genes and the beta-amyloid peptide. In this study, NMR and circular dichroism studies of synthetic humanin in aqueous and 30% 2,2,2-trifluoroethanol (TFE) solutions are reported. In aqueous solution, humanin exists predominantly in an unstructured conformation in equilibrium with turn-like structures involving residues Gly5 to Leu10 and Glu15 to Leu18, providing indication of nascent helix. In the less polar environment of 30% TFE, humanin readily adopts helical structure with long-range order spanning residues Gly5 to Leu18. Comparative 3D modeling studies and topology predictions are in qualitative agreement with the experimental findings in both environments. Our studies reveal a flexible peptide in aqueous environment, which is free to interact with possible receptors that mediate its action, but may also acquire a helical conformation necessary for specific interactions and/or passage through membranes.


    Organizational Affiliation

    Institute of Biology, NCSR Demokritos, 153 10 Athens, Greece.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Humanin
A
24Homo sapiensMutation(s): 0 
Gene Names: MT-RNR2 (HN)
Find proteins for Q8IVG9 (Homo sapiens)
Go to UniProtKB:  Q8IVG9
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 300 
  • Conformers Submitted: 14 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 1Y32 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-02-22
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance