3ZO0

Mouse IgG2a in complex with mouse TRIM21 PRYSPRY


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.99 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.181 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Trim21 is an Igg Receptor that is Structurally, Thermodynamically, and Kinetically Conserved.

Keeble, A.H.Khan, Z.Forster, A.James, L.C.

(2008) Proc.Natl.Acad.Sci.USA 105: 6045

  • DOI: 10.1073/pnas.0800159105
  • Primary Citation of Related Structures:  2VOK, 2VOL

  • PubMed Abstract: 
  • The newly identified tripartite motif (TRIM) family of proteins mediate innate immunity and other critical cellular functions. Here we show that TRIM21, which mediates the autoimmune diseases rheumatoid arthritis, systemic lupus erythematosus, and Sj ...

    The newly identified tripartite motif (TRIM) family of proteins mediate innate immunity and other critical cellular functions. Here we show that TRIM21, which mediates the autoimmune diseases rheumatoid arthritis, systemic lupus erythematosus, and Sjögren's syndrome, is a previously undescribed IgG receptor with a binding mechanism unlike known mammalian Fcgamma receptors. TRIM21 simultaneously targets conserved hot-spot residues on both Ig domains of the Fc fragment using a PRYSPRY domain with a preformed multisite interface. The binding sites on both TRIM21 and Fc are highly conserved to the extent that the proteins are functionally interchangeable through murine, canine, primate, and human species. Pre-steady-state analysis exposes mechanistic conservation at the level of individual residues, which make the same energetic and kinetic contributions to binding despite varying in sequence. Together, our results reveal that TRIM21 is a previously undescribed type of IgG receptor based on a non-Ig scaffold whose interaction at the fundamental level-structural, thermodynamic, and kinetic-is evolutionarily conserved.


    Organizational Affiliation

    Division of Protein and Nucleic Acid Chemistry, Laboratory of Molecular Biology, Medical Research Council, Hills Road, Cambridge CB2 2QH, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
IG GAMMA-2A CHAIN C REGION, A ALLELE
A
208Mus musculusGene Names: Ighg
Find proteins for P01863 (Mus musculus)
Go to UniProtKB:  P01863
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
E3 UBIQUITIN-PROTEIN LIGASE TRIM21
B
182Mus musculusGene Names: Trim21 (Ro52, Ssa1)
EC: 6.3.2.-
Find proteins for Q62191 (Mus musculus)
Go to UniProtKB:  Q62191
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MAN
Query on MAN

Download SDF File 
Download CCD File 
A
ALPHA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-PQMKYFCFSA-N
 Ligand Interaction
FUC
Query on FUC

Download SDF File 
Download CCD File 
A
ALPHA-L-FUCOSE
C6 H12 O5
SHZGCJCMOBCMKK-SXUWKVJYSA-N
 Ligand Interaction
GAL
Query on GAL

Download SDF File 
Download CCD File 
A
BETA-D-GALACTOSE
C6 H12 O6
WQZGKKKJIJFFOK-FPRJBGLDSA-N
 Ligand Interaction
BMA
Query on BMA

Download SDF File 
Download CCD File 
A
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.99 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.181 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 45.458α = 90.00
b = 186.185β = 90.00
c = 124.875γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2013-02-19 
  • Released Date: 2013-05-22 
  • Deposition Author(s): James, L.C.
  • This entry supersedes: 2VOL

Revision History 

  • Version 1.0: 2013-05-22
    Type: Initial release