2RND

Structure of the N-terminal BARpeptide in DPC micelles


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure and dynamics of helix-0 of the N-BAR domain in lipid micelles and bilayers

Low, C.Weininger, U.Lee, H.Schweimer, K.Neundorf, I.Beck-Sickinger, A.G.Pastor, R.W.Balbach, J.

(2008) Biophys.J. 95: 4315-4323

  • DOI: 10.1529/biophysj.108.134155
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Bin/Amphiphysin/Rvs-homology (BAR) domains generate and sense membrane curvature by binding the negatively charged membrane to their positively charged concave surfaces. N-BAR domains contain an N-terminal extension (helix-0) predicted to form an amp ...

    Bin/Amphiphysin/Rvs-homology (BAR) domains generate and sense membrane curvature by binding the negatively charged membrane to their positively charged concave surfaces. N-BAR domains contain an N-terminal extension (helix-0) predicted to form an amphipathic helix upon membrane binding. We determined the NMR structure and nano-to-picosecond dynamics of helix-0 of the human Bin1/Amphiphysin II BAR domain in sodium dodecyl sulfate and dodecylphosphocholine micelles. Molecular dynamics simulations of this 34-amino acid peptide revealed electrostatic and hydrophobic interactions with the detergent molecules that induce helical structure formation from residues 8-10 toward the C-terminus. The orientation in the micelles was experimentally confirmed by backbone amide proton exchange. The simulation and the experiment indicated that the N-terminal region is disordered, and the peptide curves to adopted the micelle shape. Deletion of helix-0 reduced tubulation of liposomes by the BAR domain, whereas the helix-0 peptide itself was fusogenic. These findings support models for membrane curving by BAR domains in which helix-0 increases the binding affinity to the membrane and enhances curvature generation.


    Organizational Affiliation

    Institut für Physik, Biophysik, Martin-Luther-Universität Halle-Wittenberg, D-06120 Halle (Saale), Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Myc box-dependent-interacting protein 1
A
34Homo sapiensMutation(s): 0 
Gene Names: BIN1 (AMPHL)
Find proteins for O00499 (Homo sapiens)
Go to Gene View: BIN1
Go to UniProtKB:  O00499
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 2RND Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-10-14
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance