2BMY

Banana Lectin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.248 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal Structure of Banana Lectin Reveals a Novel Second Sugar Binding Site.

Meagher, J.L.Winter, H.C.Ezell, P.Goldstein, I.J.Stuckey, J.A.

(2005) Glycobiology 15: 1033

  • DOI: 10.1093/glycob/cwi088
  • Primary Citation of Related Structures:  2BMZ, 2BN0

  • PubMed Abstract: 
  • Banana lectin (Banlec) is a dimeric plant lectin from the jacalin-related lectin family. Banlec belongs to a subgroup of this family that binds to glucose/mannose, but is unique in recognizing internal alpha1,3 linkages as well as beta1,3 linkages at ...

    Banana lectin (Banlec) is a dimeric plant lectin from the jacalin-related lectin family. Banlec belongs to a subgroup of this family that binds to glucose/mannose, but is unique in recognizing internal alpha1,3 linkages as well as beta1,3 linkages at the reducing termini. Here we present the crystal structures of Banlec alone and with laminaribiose (LAM) (Glcbeta1, 3Glc) and Xyl-beta1,3-Man-alpha-O-Methyl. The structure of Banlec has a beta-prism-I fold, similar to other family members, but differs from them in its mode of sugar binding. The reducing unit of the sugar is inserted into the binding site causing the second saccharide unit to be placed in the opposite orientation compared with the other ligand-bound structures of family members. More importantly, our structures reveal the presence of a second sugar binding site that has not been previously reported in the literature. The residues involved in the second site are common to other lectins in this family, potentially signaling a new group of mannose-specific jacalin-related lectins (mJRL) with two sugar binding sites.


    Organizational Affiliation

    Life Sciences Institute, University of Michigan, Ann Arbor, MI, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RIPENING-ASSOCIATED PROTEIN
A, B
141Musa acuminataN/A
Find proteins for O22321 (Musa acuminata)
Go to UniProtKB:  O22321
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CD
Query on CD

Download SDF File 
Download CCD File 
A, B
CADMIUM ION
Cd
WLZRMCYVCSSEQC-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.248 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 81.500α = 90.00
b = 81.500β = 90.00
c = 147.200γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data scaling
SOLVEphasing
CNSrefinement
SHARPphasing
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-06-16
    Type: Initial release
  • Version 1.1: 2013-11-20
    Type: Derived calculations, Non-polymer description, Other, Refinement description, Structure summary, Version format compliance