NMR structure of the B0 isoform of the agrin G3 domain in its Ca2+ bound state

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 400 
  • Conformers Submitted: 15 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


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: https://doi.org/10.1016/j.str.2004.02.001
  • Primary Citation of Related Structures:  
    1PZ7, 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 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

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Agrin195Gallus gallusMutation(s): 0 
Gene Names: AGRN
Find proteins for P31696 (Gallus gallus)
Explore P31696 
Go to UniProtKB:  P31696
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP31696
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 400 
  • Conformers Submitted: 15 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report

Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2004-04-13
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-03-02
    Changes: Data collection, Database references, Derived calculations