1QKQ

CHARCOT-LEYDEN CRYSTAL PROTEIN - MANNOSE COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.236 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Selective recognition of mannose by the human eosinophil Charcot-Leyden crystal protein (galectin-10): a crystallographic study at 1.8 A resolution.

Swaminathan, G.J.Leonidas, D.D.Savage, M.P.Ackerman, S.J.Acharya, K.R.

(1999) Biochemistry 38: 13837-13843

  • DOI: 10.1021/bi990756e
  • Also Cited By: 1HDK

  • PubMed Abstract: 
  • The role(s) of the eosinophil Charcot-Leyden crystal (CLC) protein in eosinophil or basophil function or associated inflammatory processes is yet to be established. Although the CLC protein has been reported to exhibit weak lysophospholipase activity ...

    The role(s) of the eosinophil Charcot-Leyden crystal (CLC) protein in eosinophil or basophil function or associated inflammatory processes is yet to be established. Although the CLC protein has been reported to exhibit weak lysophospholipase activity, it shows virtually no sequence homology to any known member of this family of enzymes. The X-ray crystal structure of the CLC protein is very similar to the structure of the galectins, members of a beta-galactoside-specific animal lectin family, including a partially conserved galectin carbohydrate recognition domain (CRD). In the absence of any known natural carbohydrate ligand for this protein, the functional role of the CLC protein (galectin-10) has remained speculative. Here we describe structural studies on the carbohydrate binding properties of the CLC protein and report the first structure of a carbohydrate in complex with the protein. Interestingly, the CLC protein demonstrates no affinity for beta-galactosides and binds mannose in a manner very different from those of other related galectins that have been shown to bind lactosamine. The partial conservation of residues involved in carbohydrate binding led to significant changes in the topology and chemical nature of the CRD, and has implications for carbohydrate recognition by the CLC protein in vivo and its functional role in the biology of inflammation.


    Related Citations: 
    • Crystal Structure of Human Charcot-Leyden Crystal Protein, an Eosinophil Lysophospholipase, Identifies It as a New Member of the Carbohydrate-Binding Family of Galectins
      Leonidas, D.D.,Elbert, B.L.,Zhou, Z.,Leffler, H.,Ackerman, S.J.,Acharya, K.R.
      (1995) Structure 3: 1379


    Organizational Affiliation

    Department of Biology and Biochemistry, University of Bath, Claverton Down, U.K.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
EOSINOPHIL LYSOPHOSPHOLIPASE
A
142Homo sapiensMutation(s): 0 
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
MAN
Query on MAN

Download SDF File 
Download CCD File 
A
ALPHA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-PQMKYFCFSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.236 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 49.600α = 90.00
b = 49.600β = 90.00
c = 263.130γ = 120.00
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-01-18
    Type: Initial release
  • Version 1.1: 2012-08-29
    Type: Atomic model, Database references, Derived calculations, Non-polymer description, Other, Refinement description, Structure summary, Version format compliance
  • Version 1.2: 2019-09-18
    Type: Data collection, Database references