4FXL

Crystal structure of the D76N Beta-2 Microglobulin mutant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.186 
  • R-Value Work: 0.130 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Hereditary systemic amyloidosis due to Asp76Asn variant beta-2-microglobulin.

Valleix, S.Gillmore, J.D.Bridoux, F.Mangione, P.P.Dogan, A.Nedelec, B.Boimard, M.Touchard, G.Goujon, J.M.Lacombe, C.Lozeron, P.Adams, D.Lacroix, C.Maisonobe, T.Plante-Bordeneuve, V.Vrana, J.A.Theis, J.D.Giorgetti, S.Porcari, R.Ricagno, S.Bolognesi, M.Stoppini, M.Delpech, M.Pepys, M.B.Hawkins, P.N.Bellotti, V.

(2012) N.Engl.J.Med. 366: 2276-2283

  • DOI: 10.1056/NEJMoa1201356

  • PubMed Abstract: 
  • We describe a kindred with slowly progressive gastrointestinal symptoms and autonomic neuropathy caused by autosomal dominant, hereditary systemic amyloidosis. The amyloid consists of Asp76Asn variant β(2)-microglobulin. Unlike patients with dialysis ...

    We describe a kindred with slowly progressive gastrointestinal symptoms and autonomic neuropathy caused by autosomal dominant, hereditary systemic amyloidosis. The amyloid consists of Asp76Asn variant β(2)-microglobulin. Unlike patients with dialysis-related amyloidosis caused by sustained high plasma concentrations of wild-type β(2)-microglobulin, the affected members of this kindred had normal renal function and normal circulating β(2)-microglobulin values. The Asp76Asn β(2)-microglobulin variant was thermodynamically unstable and remarkably fibrillogenic in vitro under physiological conditions. Previous studies of β(2)-microglobulin aggregation have not shown such amyloidogenicity for single-residue substitutions. Comprehensive biophysical characterization of the β(2)-microglobulin variant, including its 1.40-Å, three-dimensional structure, should allow further elucidation of fibrillogenesis and protein misfolding.


    Organizational Affiliation

    Laboratoire de Biochimie et de Génétique Moléculaire, Université Paris-Descartes, Sorbonne Paris Cité, Faculté de Médecine Paris, Assistance Public–Hôpitaux de Paris (AP-HP), Paris, France. sophie.valleix@cch.aphp.fr




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Beta-2-microglobulin
A
100Homo sapiensMutation(s): 1 
Gene Names: B2M
Find proteins for P61769 (Homo sapiens)
Go to Gene View: B2M
Go to UniProtKB:  P61769
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
ACT
Query on ACT

Download SDF File 
Download CCD File 
A
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
PEG
Query on PEG

Download SDF File 
Download CCD File 
A
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.186 
  • R-Value Work: 0.130 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 76.220α = 90.00
b = 28.420β = 126.54
c = 52.260γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
MxCuBEdata collection
REFMACrefinement
MOSFLMdata reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-08-15
    Type: Initial release