2H3N

Crystal structure of a surrogate light chain (LAMBDA5 and VpreB) homodimer


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.228 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural insight into pre-B cell receptor function

Bankovich, A.J.Raunser, S.Juo, Z.S.Walz, T.Davis, M.M.Garcia, K.C.

(2007) Science 316: 291-294

  • DOI: 10.1126/science.1139412
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The pre-B cell receptor (pre-BCR) serves as a checkpoint in B cell development. In the 2.7 angstrom structure of a human pre-BCR Fab-like fragment, consisting of an antibody heavy chain (HC) paired with the surrogate light chain, the "unique regions" ...

    The pre-B cell receptor (pre-BCR) serves as a checkpoint in B cell development. In the 2.7 angstrom structure of a human pre-BCR Fab-like fragment, consisting of an antibody heavy chain (HC) paired with the surrogate light chain, the "unique regions" of VpreB and lambda5 replace the complementarity-determining region 3 (CDR3) loop of an antibody light chain and appear to "probe" the HC CDR3, potentially influencing the selection of the antibody repertoire. Biochemical analysis indicates that the pre-BCR is impaired in its ability to recognize antigen, which, together with electron microscopic visualization of a pre-BCR dimer, suggests ligand-independent oligomerization as the likely signaling mechanism.


    Organizational Affiliation

    Program in Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
VpreB protein
A, C
100Homo sapiensMutation(s): 0 
Gene Names: VPREB1 (VPREB)
Find proteins for P12018 (Homo sapiens)
Go to Gene View: VPREB1
Go to UniProtKB:  P12018
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Ig lambda-5
B, D
117Homo sapiensMutation(s): 0 
Gene Names: IGLL1 (IGL1)
Find proteins for P15814 (Homo sapiens)
Go to Gene View: IGLL1
Go to UniProtKB:  P15814
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.228 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 60.169α = 90.00
b = 72.814β = 90.00
c = 115.201γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
CNSrefinement
HKL-2000data scaling
ADSCdata collection
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-05-08
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance