3O81

Beta2-microglobulin from Gallus gallus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Comparative biophysical characterization of chicken beta2-microglobulin.

Hee, C.S.Fabian, H.Uchanska-Ziegler, B.Ziegler, A.Loll, B.

(2012) Biophys.Chem. 167: 26-35

  • DOI: 10.1016/j.bpc.2012.04.001

  • PubMed Abstract: 
  • β(2)-microglobulin (β(2)m) is the smallest building block of molecules belonging to the immunoglobulin superfamily. By comparing thermodynamic and structural characteristics of chicken β(2)m with those of other species, we seek to elucidate whether i ...

    β(2)-microglobulin (β(2)m) is the smallest building block of molecules belonging to the immunoglobulin superfamily. By comparing thermodynamic and structural characteristics of chicken β(2)m with those of other species, we seek to elucidate whether it is possible to pinpoint features that set the avian protein apart from other β(2)m. The thermodynamic assays revealed that chicken β(2)m exhibits a lower melting temperature than human β(2)m, and the H/D exchange behavior observed by infrared spectroscopy indicates a more flexible structure of the former protein. To understand these differences at a molecular level, we determined the structure of free chicken β(2)m by X-ray crystallography to a resolution of 2.0 Å. Our comparisons indicate that certain biophysical characteristics of the chicken protein, particularly its conformational flexibility, diverge considerably from those of the other β(2)m analyzed, although basic structural features have been retained through evolution.


    Organizational Affiliation

    Institut für Immungenetik, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Freie Universität Berlin, Thielallee 73, 14195 Berlin, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Beta-2-microglobulin
A, B
119Gallus gallusMutation(s): 0 
Gene Names: B2M
Find proteins for P21611 (Gallus gallus)
Go to Gene View: B2M
Go to UniProtKB:  P21611
Experimental Data & Validation

Experimental Data

Unit Cell:
Length (Å)Angle (°)
a = 36.920α = 90.00
b = 30.480β = 93.47
c = 87.360γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
MAR345data collection
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-08-03
    Type: Initial release
  • Version 1.1: 2013-03-20
    Type: Database references
  • Version 1.2: 2017-11-08
    Type: Refinement description