6GKU

Structure of galectin-10 in complex with the Fab fragment of a Charcot-Leyden crystal solubilizing antibody, 6F5


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.91 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.166 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Protein crystallization promotes type 2 immunity and is reversible by antibody treatment.

Persson, E.K.Verstraete, K.Heyndrickx, I.Gevaert, E.Aegerter, H.Percier, J.M.Deswarte, K.Verschueren, K.H.G.Dansercoer, A.Gras, D.Chanez, P.Bachert, C.Goncalves, A.Van Gorp, H.De Haard, H.Blanchetot, C.Saunders, M.Hammad, H.Savvides, S.N.Lambrecht, B.N.

(2019) Science 364: --

  • DOI: 10.1126/science.aaw4295
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Although spontaneous protein crystallization is a rare event in vivo, Charcot-Leyden crystals (CLCs) consisting of galectin-10 (Gal10) protein are frequently observed in eosinophilic diseases, such as asthma. We found that CLCs derived from patients ...

    Although spontaneous protein crystallization is a rare event in vivo, Charcot-Leyden crystals (CLCs) consisting of galectin-10 (Gal10) protein are frequently observed in eosinophilic diseases, such as asthma. We found that CLCs derived from patients showed crystal packing and Gal10 structure identical to those of Gal10 crystals grown in vitro. When administered to the airways, crystalline Gal10 stimulated innate and adaptive immunity and acted as a type 2 adjuvant. By contrast, a soluble Gal10 mutein was inert. Antibodies directed against key epitopes of the CLC crystallization interface dissolved preexisting CLCs in patient-derived mucus within hours and reversed crystal-driven inflammation, goblet-cell metaplasia, immunoglobulin E (IgE) synthesis, and bronchial hyperreactivity (BHR) in a humanized mouse model of asthma. Thus, protein crystals may promote hallmark features of asthma and are targetable by crystal-dissolving antibodies.


    Organizational Affiliation

    arGEN-X, Ghent, Belgium.,Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium.,Unit for Structural Biology, VIB Center for Inflammation Research, Ghent, Belgium.,Clinique des Bronches, Allergies et Sommeil, Hôpital Nord, AP-HM, Marseille, France.,Upper Airways Research Laboratory, ENT Department, Ghent University Hospital, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Belgium.,Department of Pulmonary Medicine, ErasmusMC, Rotterdam, Netherlands.,Aix Marseille University, INSERM, INRA, C2VN, Marseille, France.,BioImaging Core, VIB Inflammation Research Center, Ghent, Belgium.,Unit for Structural Biology, VIB Center for Inflammation Research, Ghent, Belgium. bart.lambrecht@ugent.be savvas.savvides@ugent.be.,Immunoregulation Unit, VIB Center for Inflammation Research, Ghent, Belgium.,Division of ENT Diseases, CLINTEC, Karolinska Institute, Stockholm, Sweden.,Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium.,Immunoregulation Unit, VIB Center for Inflammation Research, Ghent, Belgium. bart.lambrecht@ugent.be savvas.savvides@ugent.be.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Galectin-10
A
180Homo sapiensMutation(s): 0 
Gene Names: CLC (LGALS10, LGALS10A)
Find proteins for Q05315 (Homo sapiens)
Go to Gene View: CLC
Go to UniProtKB:  Q05315
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Fab 6F5 - Heavy Chain
H
228N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Fab 6F5 - Light chain
L
216N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
PGE
Query on PGE

Download SDF File 
Download CCD File 
L
TRIETHYLENE GLYCOL
C6 H14 O4
ZIBGPFATKBEMQZ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.91 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.166 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 59.014α = 90.00
b = 146.186β = 90.00
c = 185.697γ = 90.00
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata scaling
XDSdata reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2019-06-05
    Type: Initial release