1PZ7

Modulation of agrin function by alternative splicing and Ca2+ binding


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.421 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.220 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Modulation of agrin function by alternative splicing and Ca2+ binding.

Stetefeld, J.Alexandrescu, A.T.Maciejewski, M.W.Jenny, M.Rathgeb-Szabo, K.Schulthess, T.Landwehr, R.Frank, S.Ruegg, M.A.Kammerer, R.A.

(2004) STRUCTURE 12: 503-515

  • DOI: 10.1016/j.str.2004.02.001
  • Primary Citation of Related Structures:  1PZ8, 1PZ9, 1Q56

  • PubMed Abstract: 
  • The aggregation of acetylcholine receptors on postsynaptic membranes is a key step in neuromuscular junction development. This process depends on alternatively spliced forms of the proteoglycan agrin with "B-inserts" of 8, 11, or 19 residues in the p ...

    The aggregation of acetylcholine receptors on postsynaptic membranes is a key step in neuromuscular junction development. This process depends on alternatively spliced forms of the proteoglycan agrin with "B-inserts" of 8, 11, or 19 residues in the protein's globular C-terminal domain, G3. Structures of the neural B8 and B11 forms of agrin-G3 were determined by X-ray crystallography. The structure of G3-B0, which lacks inserts, was determined by NMR. The agrin-G3 domain adopts a beta jellyroll fold. The B insert site is flanked by four loops on one edge of the beta sandwich. The loops form a surface that corresponds to a versatile interaction interface in the family of structurally related LNS proteins. NMR and X-ray data indicate that this interaction interface is flexible in agrin-G3 and that flexibility is reduced by Ca(2+) binding. The plasticity of the interaction interface could enable different splice forms of agrin to select between multiple binding partners.


    Organizational Affiliation

    Department of Biophysical Chemistry, University of Basel, Klingelbergstrasse 70, CH-4056 Basel, Switzerland. joerg.stetefeld@unibas.ch




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Agrin
A, B
204Gallus gallusGene Names: AGRN (AGRIN)
Find proteins for P31696 (Gallus gallus)
Go to Gene View: AGRN
Go to UniProtKB:  P31696
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A, B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.421 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.220 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 101.329α = 90.00
b = 57.540β = 127.10
c = 74.621γ = 90.00
Software Package:
Software NamePurpose
SHARPphasing
MOSFLMdata reduction
CCP4data scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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