5XRL

Galectin-10/Charcot-Leyden crystal protein variant N65A crystal structure


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.004 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.171 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Galectin-10: a new structural type of prototype galectin dimer and effects on saccharide ligand binding.

Su, J.Gao, J.Si, Y.Cui, L.Song, C.Wang, Y.Wu, R.Tai, G.Zhou, Y.

(2018) Glycobiology 28: 159-168

  • DOI: 10.1093/glycob/cwx107
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Galectin-10 (Gal-10) which forms Charcot-Leyden crystals in vivo, is crucial to regulating lymph cell function. Here, we solved the crystal structures of Gal-10 and eight variants at resolutions of 1.55-2.00 Å. Structural analysis and size exclusion ...

    Galectin-10 (Gal-10) which forms Charcot-Leyden crystals in vivo, is crucial to regulating lymph cell function. Here, we solved the crystal structures of Gal-10 and eight variants at resolutions of 1.55-2.00 Å. Structural analysis and size exclusion chromatography demonstrated that Gal-10 dimerizes with a novel global shape that is different from that of other prototype galectins (e.g., Gal-1, -2 and -7). In the Gal-10 dimer, Glu33 from one subunit modifies the carbohydrate binding site of another, essentially inhibiting disaccharide binding. Nevertheless, glycerol (and possibly other small hydroxylated molecules) can interact with residues at the ligand binding site, with His53 being the most crucial for binding. Alanine substitution of the conserved Trp residue (Trp72) that is crucial to saccharide binding in other galectins, actually leads to enhanced erythrocyte agglutination, suggesting that Trp72 negatively regulates Gal-10 ligand binding. Overall, our crystallographic and biochemical results provide insight into Gal-10 ligand binding specificity.


    Organizational Affiliation

    Jilin Province Key Laboratory for Chemistry and Biology of Natural Drugs in Changbai Mountain, The School of Life Sciences, Northeast Normal University, Changchun 130024, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Galectin-10
A
145Homo sapiensMutation(s): 1 
Gene Names: CLC (LGALS10, LGALS10A)
Find proteins for Q05315 (Homo sapiens)
Go to Gene View: CLC
Go to UniProtKB:  Q05315
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.004 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.171 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 49.057α = 90.00
b = 49.057β = 90.00
c = 259.030γ = 120.00
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2017-06-08 
  • Released Date: 2018-01-24 
  • Deposition Author(s): Su, J.

Revision History 

  • Version 1.0: 2018-01-24
    Type: Initial release
  • Version 1.1: 2018-03-07
    Type: Database references