ISDA

Deposition Date 2018-05-21

Release Date 2019-06-05

Last Version Date 2024-01-17

Entry Detail

PDB ID:

6GKT

Keywords:

SUGAR BINDING PROTEIN

Title:

X-ray structure of a non-autocrystallizing galectin-10 variant, Gal10-Tyr69Glu

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Escherichia coli BL21(DE3)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.10 Å

R-Value Free:

0.20

R-Value Work:

0.17

R-Value Observed:

0.17

Space Group:

P 1 21 1

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Galectin-10
Gene (Uniprot):CLC
Chain IDs:A, B, C, D, E, F
Chain Length:144
Number of Molecules:6
Biological Source:Homo sapiens

UniProt ID:Q05315 Pfam ID:PF00337 EC:3.1.1.5

Ligand Molecules

P6G

PG4

PGE

Primary Citation

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.Show

Science 364 ? ? (2019)

PMID: 31123109 DOI: 10.1126/science.aaw4295

Abstact

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.

Legend

Protein

Chemical

Disease

Primary Citation of related structures