1JPC

MANNOSE-SPECIFIC AGGLUTININ (LECTIN) FROM SNOWDROP (GALANTHUS NIVALIS) BULBS IN COMPLEX WITH MANNOSE-ALPHA1,6-(MANNOSE-ALPHA1,3)-MANNOSE-ALPHA1,6-(MANNOSE-ALPHA1,3)-MANNOSE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.187 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The 2.0 A structure of a cross-linked complex between snowdrop lectin and a branched mannopentaose: evidence for two unique binding modes.

Wright, C.S.Hester, G.

(1996) Structure 4: 1339-1352


  • PubMed Abstract: 
  • Galanthus nivalis agglutinin (GNA), a mannose-specific lectin from snowdrop bulbs, is a tetrameric member of the family of Amaryllidaceae lectins that exhibit antiviral activity towards HIV. Its subunits are composed of three pseudo-symmetrically rel ...

    Galanthus nivalis agglutinin (GNA), a mannose-specific lectin from snowdrop bulbs, is a tetrameric member of the family of Amaryllidaceae lectins that exhibit antiviral activity towards HIV. Its subunits are composed of three pseudo-symmetrically related beta sheet domains, each with a conserved mannose-binding site. Crystal structures of monosaccharide and disaccharide complexes of GNA have revealed that all 12 binding sites of the tetramer are functional, and that the degree of occupancy is dependent on the availability of subsidiary interactions from neighboring subunits. The complex of GNA with a branched mannopentaose ((Manalpha1,6-(alpha1, 3-Man)Man-alpha1,6-(alpha1,3-Man)Man) described here simulates a more biologically relevant complex.


    Related Citations: 
    • The Mannose-Specific Bulb Lectin from Galanthus Nivalis (Snowdrop) Binds Mono-and Dimannosides at Distinct Sites. Structure Analysis of Refined Complexes at 2.3 A and 3.0 A Resolution
      Hester, G.,Wright, C.S.
      (1996) J.Mol.Biol. 262: 516
    • Structure of Mannose-Specific Snowdrop (Galanthus Nivalis) Lectin is Representative of a New Plant Lectin Family
      Hester, G.,Kaku, H.,Goldstein, I.J.,Wright, C.S.
      (1995) Nat.Struct.Mol.Biol. 2: 472


    Organizational Affiliation

    Department of Biochemistry, Virginia Commonwealth University, Richmond, Virginia 23298, USA. cswright@gems.vcu.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
AGGLUTININ
A
109Galanthus nivalisMutation(s): 0 
Find proteins for P30617 (Galanthus nivalis)
Go to UniProtKB:  P30617
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: 2 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.187 
  • Space Group: I 41 2 2
Unit Cell:
Length (Å)Angle (°)
a = 96.339α = 90.00
b = 96.339β = 90.00
c = 68.635γ = 90.00
Software Package:
Software NamePurpose
X-PLORphasing
MOSFLMdata reduction
SCALAdata scaling
X-PLORrefinement
AGROVATAdata reduction
X-PLORmodel building
CCP4data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-01-27
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance