2TEP

PEANUT LECTIN COMPLEXED WITH T-ANTIGENIC DISACCHARIDE

• PDB DOI: https://doi.org/10.2210/pdb2TEP/pdb
• Entry: 2TEP supersedes: 1TEP

• Classification: LECTIN
• Organism(s): Arachis hypogaea
• Mutation(s): No 


• Deposited: 1999-04-05 Released: 1999-04-08 
• Deposition Author(s): Ravishankar, R., Ravindran, M., Suguna, K., Surolia, A., Vijayan, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.251 
• R-Value Work: 0.175 

Literature

The Specificity of Peanut Agglutinin for Thomsen-Friedenreich Antigen is Mediated by Water-Bridges

Ravishankar, R., Ravindran, M., Suguna, K., Surolia, A., Vijayan, M.

(1997) Curr Sci 72: 855-861

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 102.75 kDa 
• Atom Count: 7,601 
• Modelled Residue Count: 928 
• Deposited Residue Count: 944 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (PEANUT LECTIN)	A, B, C, D	236	Arachis hypogaea	Mutation(s): 0
UniProt
Find proteins for P02872 (Arachis hypogaea) Explore P02872  Go to UniProtKB:  P02872

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-galactopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-galactopyranose	E, F, G, H	2		N/A
Glycosylation Resources
GlyTouCan:  G01534TU GlyCosmos:  G01534TU GlyGen:  G01534TU

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MN	J [auth A], L [auth B], N [auth C], P [auth D]	MANGANESE (II) ION Mn WAEMQWOKJMHJLA-UHFFFAOYSA-N
CA	I [auth A], K [auth B], M [auth C], O [auth D]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.251 
• R-Value Work: 0.175 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 129.892	α = 90
b = 126.676	β = 90
c = 76.516	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-04-08 
Deposition Author(s): Ravishankar, R., Ravindran, M., Suguna, K., Surolia, A., Vijayan, M.
• This entry supersedes: 1TEP

Revision History  

• Version 1.0: 1999-04-08
  Type: Initial release
  
• Version 1.1: 2008-04-26
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2019-11-20
  Changes: Database references, Derived calculations
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Structure summary
• Version 2.1: 2023-12-27
  Changes: Data collection, Database references, Derived calculations, Structure summary