1C3K

CRYSTAL STRUCTURE OF HELIANTHUS TUBEROSUS LECTIN

• PDB DOI: https://doi.org/10.2210/pdb1C3K/pdb

• Classification: SUGAR BINDING PROTEIN
• Organism(s): Helianthus tuberosus
• Mutation(s): No 


• Deposited: 1999-07-28 Released: 2000-01-10 
• Deposition Author(s): Bourne, Y., Zamboni, V., Barre, A., Peumans, W.J., van Damme, E.J.M., Rouge, P.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.255 
• R-Value Work: 0.200 
• R-Value Observed: 0.200 

Literature

Helianthus tuberosus lectin reveals a widespread scaffold for mannose-binding lectins.

Bourne, Y., Zamboni, V., Barre, A., Peumans, W.J., Van Damme, E.J., Rouge, P.

(1999) Structure 7: 1473-1482

• PubMed: 10647178 
• DOI: https://doi.org/10.1016/s0969-2126(00)88338-0
• Primary Citation of Related Structures:  
  1C3K, 1C3M, 1C3N


• PubMed Abstract: 
  

  Heltuba, a tuber lectin from the Jerusalem artichoke Helianthus tuberosus, belongs to the mannose-binding subgroup of the family of jacalin-related plant lectins. Heltuba is highly specific for the disaccharides Man alpha 1-3Man or Man alpha 1-2Man, two carbohydrates that are particularly abundant in the glycoconjugates exposed on the surface of viruses, bacteria and fungi, and on the epithelial cells along the gastrointestinal tract of lower animals. Heltuba is therefore a good candidate as a defense protein against plant pathogens or predators.

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Organizational Affiliation: 

AFMB-CNRS, Marseille, France. [e-mail]

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Dihedral - D4  (Explore in 3D)
Global Stoichiometry: Homo 8-mer - A8 

Biological assembly 2 generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 15.5 kDa 
• Atom Count: 1,190 
• Modelled Residue Count: 143 
• Deposited Residue Count: 147 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
AGGLUTININ	A	147	Helianthus tuberosus	Mutation(s): 0
UniProt
Find proteins for Q9ZQY5 (Helianthus tuberosus) Explore Q9ZQY5  Go to UniProtKB:  Q9ZQY5

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.255 
• R-Value Work: 0.200 
• R-Value Observed: 0.200 
• Space Group: I 4 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 104.927	α = 90
b = 104.927	β = 90
c = 63.751	γ = 90

Software Package:

Software Name	Purpose
AMoRE	phasing
CNS	refinement
DENZO	data reduction
CCP4	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2000-01-10 
Deposition Author(s): Bourne, Y., Zamboni, V., Barre, A., Peumans, W.J., van Damme, E.J.M., Rouge, P.

Revision History  

• Version 1.0: 2000-01-10
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2011-11-16
  Changes: Atomic model
• Version 1.4: 2024-02-07
  Changes: Data collection, Database references