5IFH

Crystal structure of the BCR Fab fragment from subset #2 case P11475


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.293 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.180 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Distinct homotypic B-cell receptor interactions shape the outcome of chronic lymphocytic leukaemia.

Minici, C.Gounari, M.Ubelhart, R.Scarfo, L.Duhren-von Minden, M.Schneider, D.Tasdogan, A.Alkhatib, A.Agathangelidis, A.Ntoufa, S.Chiorazzi, N.Jumaa, H.Stamatopoulos, K.Ghia, P.Degano, M.

(2017) Nat Commun 8: 15746-15746

  • DOI: 10.1038/ncomms15746

  • PubMed Abstract: 
  • Cell-autonomous B-cell receptor (BcR)-mediated signalling is a hallmark feature of the neoplastic B lymphocytes in chronic lymphocytic leukaemia (CLL). Here we elucidate the structural basis of autonomous activation of CLL B cells, showing that BcR i ...

    Cell-autonomous B-cell receptor (BcR)-mediated signalling is a hallmark feature of the neoplastic B lymphocytes in chronic lymphocytic leukaemia (CLL). Here we elucidate the structural basis of autonomous activation of CLL B cells, showing that BcR immunoglobulins initiate intracellular signalling through homotypic interactions between epitopes that are specific for each subgroup of patients with homogeneous clinicobiological profiles. The molecular details of the BcR-BcR interactions apparently dictate the clinical course of disease, with stronger affinities and longer half-lives in indolent cases, and weaker, short-lived contacts mediating the aggressive ones. The diversity of homotypic BcR contacts leading to cell-autonomous signalling reconciles the existence of a shared pathogenic mechanism with the biological and clinical heterogeneity of CLL and offers opportunities for innovative treatment strategies.


    Organizational Affiliation

    Biocrystallography Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, via Olgettina 58, 20132 Milan, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Heavy chain of the Fab fragment from BCR derived from the P11475 CLL clone
H
221N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Light chain of the Fab fragment from BCR derived from the P11475 CLL clone
L
215N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.293 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.180 
  • Space Group: P 41
Unit Cell:
Length (Å)Angle (°)
a = 65.872α = 90.00
b = 65.872β = 90.00
c = 111.233γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
Aimlessdata scaling
PHENIXrefinement
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2016-02-26 
  • Released Date: 2017-03-08 
  • Deposition Author(s): Minici, C., Degano, M.

Funding OrganizationLocationGrant Number
AIRCItalyIG 17032

Revision History 

  • Version 1.0: 2017-03-08
    Type: Initial release
  • Version 1.1: 2017-06-21
    Type: Database references