1ULG

CGL2 in complex with Thomsen-Friedenreich antigen


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.219 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Structure and Functional Analysis of the Fungal Galectin CGL2

Walser, P.J.Haebel, P.W.Kuenzler, M.Sargent, D.Kues, U.Aebi, M.Ban, N.

(2004) Structure 12: 689-702

  • DOI: 10.1016/j.str.2004.03.002
  • Primary Citation of Related Structures:  
    1UL9, 1ULG, 1ULF, 1ULE, 1ULD, 1ULC

  • PubMed Abstract: 
  • Recognition of and discrimination between potential glyco-substrates is central to the function of galectins. Here we dissect the fundamental parameters responsible for such selectivity by the fungal representative, CGL2. The 2.1 A crystal structure of CGL2 and five substrate complexes reveal that this prototype galectin achieves increased substrate specificity by accommodating substituted oligosaccharides of the mammalian blood group A/B type in an extended binding cleft ...

    Recognition of and discrimination between potential glyco-substrates is central to the function of galectins. Here we dissect the fundamental parameters responsible for such selectivity by the fungal representative, CGL2. The 2.1 A crystal structure of CGL2 and five substrate complexes reveal that this prototype galectin achieves increased substrate specificity by accommodating substituted oligosaccharides of the mammalian blood group A/B type in an extended binding cleft. Kinetic studies on wild-type and mutant CGL2 proteins demonstrate that the tetrameric organization is essential for functionality. The geometric constraints due to the orthogonal orientation of the four binding sites have important consequences on substrate binding and selectivity.


    Related Citations: 
    • Crystallography & NMR system: A new software suite for macromolecular structure determination.
      Brunger, A.T., Adams, P.D., Clore, G.M., DeLano, W.L., Gros, P., Grosse-Kunstleve, R.W., Jiang, J.S., Kuszewski, J., Nilges, M., Pannu, N.S., Read, R.J., Rice, L.M., Simonson, T., Warren, G.L.
      (1998) Acta Crystallogr D Biol Crystallogr 54: 905

    Organizational Affiliation

    Institute of Microbiology, Swiss Federal Institute of Technology, Schmelzbergstrasse 7, CH-8092, Zurich, Switzerland.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
galectin-2A, B, C, D150Coprinopsis cinereaMutation(s): 0 
Gene Names: Cgl2
UniProt
Find proteins for Q9P4R8 (Coprinopsis cinerea)
Explore Q9P4R8 
Go to UniProtKB:  Q9P4R8
Protein Feature View
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
beta-D-galactopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-galactopyranoseE, F, G, H2 N/A Oligosaccharides Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.219 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.137α = 90
b = 113.634β = 108.48
c = 65.091γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-04-20
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary