1BB9

CRYSTAL STRUCTURE OF THE SH3 DOMAIN FROM RAT AMPHIPHYSIN 2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.186 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the amphiphysin-2 SH3 domain and its role in the prevention of dynamin ring formation.

Owen, D.J.Wigge, P.Vallis, Y.Moore, J.D.Evans, P.R.McMahon, H.T.

(1998) EMBO J. 17: 5273-5285

  • DOI: 10.1093/emboj/17.18.5273

  • PubMed Abstract: 
  • The amphiphysins are brain-enriched proteins, implicated in clathrin-mediated endocytosis, that interact with dynamin through their SH3 domains. To elucidate the nature of this interaction, we have solved the crystal structure of the amphiphysin-2 (A ...

    The amphiphysins are brain-enriched proteins, implicated in clathrin-mediated endocytosis, that interact with dynamin through their SH3 domains. To elucidate the nature of this interaction, we have solved the crystal structure of the amphiphysin-2 (Amph2) SH3 domain to 2.2 A. The structure possesses several notable features, including an extensive patch of negative electrostatic potential covering a large portion of its dynamin binding site. This patch accounts for the specific requirement of amphiphysin for two arginines in the proline-rich binding motif to which it binds on dynamin. We demonstrate that the interaction of dynamin with amphiphysin SH3 domains, unlike that with SH3 domains of Grb2 or spectrin, prevents dynamin self-assembly into rings. Deletion of a unique insert in the n-Src loop of Amph2 SH3, a loop adjacent to the dynamin binding site, significantly reduces this effect. Conversely, replacing the n-Src loop of the N-terminal SH3 domain of Grb2 with that of Amph2 causes it to favour dynamin ring disassembly. Transferrin uptake assays show that shortening the n-Src loop of Amph2 SH3 reduces the ability of this domain to inhibit endocytosis in vivo. Our data suggest that amphiphysin SH3 domains are important regulators of the multimerization cycle of dynamin in endocytosis.


    Organizational Affiliation

    MRC Laboratory of Molecular Biology, Hills Road, Cambridge CB2 2QH, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
AMPHIPHYSIN 2
A
115Rattus norvegicusGene Names: Bin1 (Amph2, Amphl)
Find proteins for O08839 (Rattus norvegicus)
Go to UniProtKB:  O08839
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.186 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 72.140α = 90.00
b = 72.140β = 90.00
c = 34.560γ = 120.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
SHARPphasing
REFMACrefinement
CCP4data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-06-17
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance