4I4R

BEL beta-trefoil apo crystal form 4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.77 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.176 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

BEL {beta}-trefoil: A novel lectin with antineoplastic properties in king bolete (Boletus edulis) mushrooms.

Bovi, M.Cenci, L.Perduca, M.Capaldi, S.Carrizo, M.E.Civiero, L.Chiarelli, L.R.Galliano, M.Monaco, H.L.

(2013) Glycobiology 23: 578-592

  • DOI: 10.1093/glycob/cws164
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • A novel lectin was purified from the fruiting bodies of king bolete mushrooms (Boletus edulis, also called porcino, cep or penny bun). The lectin was structurally characterized i.e its amino acid sequence and three-dimensional structure were determin ...

    A novel lectin was purified from the fruiting bodies of king bolete mushrooms (Boletus edulis, also called porcino, cep or penny bun). The lectin was structurally characterized i.e its amino acid sequence and three-dimensional structure were determined. The new protein is a homodimer and each protomer folds as β-trefoil domain and therefore we propose the name Boletus edulis lectin (BEL) β-trefoil to distinguish it from the other lectin that has been described in these mushrooms. The lectin has potent anti-proliferative effects on human cancer cells, which confers to it an interesting therapeutic potential as an antineoplastic agent. Several crystal forms of the apoprotein and of complexes with different carbohydrates were studied by X-ray diffraction. The structure of the apoprotein was solved at 1.12 Å resolution. The interaction of the lectin with lactose, galactose, N-acetylgalactosamine and T-antigen disaccharide, Galβ1-3GalNAc, was examined in detail. All the three potential binding sites present in the β-trefoil fold are occupied in at least one crystal form and are described in detail in this paper. No important conformational changes are observed in the lectin when comparing its co-crystals with carbohydrates with those of the ligand-free protein.


    Organizational Affiliation

    Department of Biotechnology, Biocrystallography Laboratory, University of Verona, Ca Vignal 1, strada Le Grazie 15, 37134 Verona, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
BEL-beta trefoil
A, B, C, D
146Boletus edulis
Find proteins for R4GRU5 (Boletus edulis)
Go to UniProtKB:  R4GRU5
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TRS
Query on TRS

Download SDF File 
Download CCD File 
A, B, C, D
2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
TRIS BUFFER
C4 H12 N O3
LENZDBCJOHFCAS-UHFFFAOYSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.77 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.176 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 65.420α = 90.00
b = 70.030β = 106.84
c = 71.830γ = 90.00
Software Package:
Software NamePurpose
MxCuBEdata collection
SCALAdata scaling
MOSFLMdata reduction
PHENIXrefinement
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-04-24
    Type: Initial release