4JVU

IgM C2-domain from mouse


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.3 Å
  • R-Value Free: 0.168 
  • R-Value Work: 0.138 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

High-resolution structures of the IgM Fc domains reveal principles of its hexamer formation.

Muller, R.Grawert, M.A.Kern, T.Madl, T.Peschek, J.Sattler, M.Groll, M.Buchner, J.

(2013) Proc.Natl.Acad.Sci.USA 110: 10183-10188

  • DOI: 10.1073/pnas.1300547110
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • IgM is the first antibody produced during the humoral immune response. Despite its fundamental role in the immune system, IgM is structurally only poorly described. In this work we used X-ray crystallography and NMR spectroscopy to determine the atom ...

    IgM is the first antibody produced during the humoral immune response. Despite its fundamental role in the immune system, IgM is structurally only poorly described. In this work we used X-ray crystallography and NMR spectroscopy to determine the atomic structures of the constant IgM Fc domains (Cµ2, Cµ3, and Cµ4) and to address their roles in IgM oligomerization. Although the isolated domains share the typical Ig fold, they differ substantially in dimerization properties and quaternary contacts. Unexpectedly, the Cµ4 domain and its C-terminal tail piece are responsible and sufficient for the specific polymerization of Cµ4 dimers into covalently linked hexamers of dimers. Based on small angle X-ray scattering data, we present a model of the ring-shaped Cµ4 structure, which reveals the principles of IgM oligomerization.


    Organizational Affiliation

    Munich Center for Integrated Protein Science at the Department Chemie, Technische Universität München, 85748 Garching, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ig mu chain C region membrane-bound form
A, B
117Mus musculusMutation(s): 0 
Gene Names: Ighm (Igh-6)
Find proteins for P01872 (Mus musculus)
Go to UniProtKB:  P01872
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.3 Å
  • R-Value Free: 0.168 
  • R-Value Work: 0.138 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 92.440α = 90.00
b = 44.780β = 118.10
c = 54.570γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
XDSdata scaling
REFMACrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-06-12
    Type: Initial release
  • Version 1.1: 2013-07-03
    Type: Database references