1B2P

NATIVE MANNOSE-SPECIFIC BULB LECTIN FROM SCILLA CAMPANULATA (BLUEBELL) AT 1.7 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.186 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the native (unligated) mannose-specific bulb lectin from Scilla campanulata (bluebell) at 1.7 A resolution.

Wood, S.D.Wright, L.M.Reynolds, C.D.Rizkallah, P.J.Allen, A.K.Peumans, W.J.Van Damme, E.J.

(1999) Acta Crystallogr.,Sect.D 55: 1264-1272


  • PubMed Abstract: 
  • The X-ray crystal structure of native Scilla campanulata agglutinin, a mannose-specific lectin from bluebell bulbs and a member of the Liliaceae family, has been determined by molecular replacement and refined to an R value of 0.186 at 1.7 A resoluti ...

    The X-ray crystal structure of native Scilla campanulata agglutinin, a mannose-specific lectin from bluebell bulbs and a member of the Liliaceae family, has been determined by molecular replacement and refined to an R value of 0.186 at 1.7 A resolution. The lectin crystallizes in space group P21212 with unit-cell parameters a = 70. 42, b = 92.95, c = 46.64 A. The unit cell contains eight protein molecules of Mr = 13143 Da (119 amino-acid residues). The asymmetric unit comprises two chemically identical molecules, A and B, related by a non-crystallographic twofold axis perpendicular to c. This dimer further associates by crystallographic twofold symmetry to form a tetramer. The fold of the polypeptide backbone closely resembles that found in the lectins from Galanthus nivalis (snowdrop) and Hippeastrum (amaryllis) and contains a threefold symmetric beta-prism made up of three antiparallel four-stranded beta-sheets. Each of the four-stranded beta-sheets (I, II and III) possesses a potential saccharide-binding site containing conserved residues; however, site II has two mutations relative to sites I and III which may prevent ligation at this site. Our study provides the first accurate and detailed description of a native (unligated) structure from this superfamily of mannose-specific bulb lectins and will allow comparisons with a number of lectin-saccharide complexes which have already been determined or are currently under investigation.


    Related Citations: 
    • Crystallisation and Preliminary Crystallographic Analysis of Scilla Campanulata Lectin Complexed with Alpha-D-Mannose
      Wright, L.M.,Wood, S.D.,Reynolds, C.D.,Rizkallah, P.J.,Allen, A.K.
      (1997) Protein Pept.Lett. 4: 343
    • Purification, Crystallisation and Preliminary X-Ray Analysis of a Mannose- Binding Lectin from Bluebell (Scilla Campanulata) Bulbs
      Wright, L.M.,Wood, S.D.,Reynolds, C.D.,Rizkallah, P.J.,Peumans, W.J.,Vandamme, E.J.M.,Allen, A.K.
      (1996) Acta Crystallogr.,Sect.D 52: 1021
    • Crystallisation and Preliminary Structural Studies of Scilla Campanulata Lectin Complexed with Alpha (1-6)-Mannobiose
      Wright, L.M.,Wood, S.D.,Reynolds, C.D.,Rizkallah, P.J.,Allen, A.K.
      (1998) Acta Crystallogr.,Sect.D 54: 90
    • Scilla Campanulata Agglutinin Crystallized in Complex with the Trimannoside Alpha-D-Man-(1-6)-[Alpha-D-Man-(1-3)]-Alpha-D-Man
      Wright, L.M.,Rizkallah, P.J.,Wood, S.D.,Reynolds, C.D.
      (1998) Acta Crystallogr.,Sect.D 54: 665


    Organizational Affiliation

    School of Biomolecular Sciences, Max Perutz Building, Liverpool John Moores University, Liverpool L3 3AF, England.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (LECTIN)
A, B
119Hyacinthoides hispanicaN/A
Find proteins for Q9ZP49 (Hyacinthoides hispanica)
Go to UniProtKB:  Q9ZP49
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.186 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 70.420α = 90.00
b = 92.950β = 90.00
c = 46.640γ = 90.00
Software Package:
Software NamePurpose
ROTAVATAdata reduction
MOSFLMdata reduction
AMoREphasing
CCP4data scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-07-22
    Type: Initial release
  • Version 1.1: 2008-04-26
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance