2GN7

Metal-free (apo) P. angolensis seed lectin in complex with Man-alpha(1-3)Man-alpha(1-6)Man

• PDB DOI: https://doi.org/10.2210/pdb2GN7/pdb

• Classification: SUGAR BINDING PROTEIN
• Organism(s): Pterocarpus angolensis
• Mutation(s): No 


• Deposited: 2006-04-09 Released: 2006-07-25 
• Deposition Author(s): Garcia-Pino, A., Buts, L., Wyns, L., Loris, R.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.90 Å
• R-Value Free: 0.311 
• R-Value Work: 0.233 
• R-Value Observed: 0.237 

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 55.8 kDa 
• Atom Count: 3,504 
• Modelled Residue Count: 457 
• Deposited Residue Count: 504 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
lectin	A, B	252	Pterocarpus angolensis	Mutation(s): 0
UniProt
Find proteins for Q8GSD2 (Pterocarpus angolensis) Explore Q8GSD2  Go to UniProtKB:  Q8GSD2

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]alpha-D-mannopyranose	C	3		N/A
Glycosylation Resources
GlyTouCan:  G40042OZ GlyCosmos:  G40042OZ GlyGen:  G40042OZ

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MAN	D [auth B]	alpha-D-mannopyranose C6 H12 O6 WQZGKKKJIJFFOK-PQMKYFCFSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
PCA	A, B	L-PEPTIDE LINKING	C5 H7 N O3		GLN

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.90 Å
• R-Value Free: 0.311 
• R-Value Work: 0.233 
• R-Value Observed: 0.237 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 58.156	α = 90
b = 61.388	β = 90
c = 128.327	γ = 90

Software Package:

Software Name	Purpose
MAR345	data collection
SCALEPACK	data scaling
CNS	refinement
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-07-25 
Deposition Author(s): Garcia-Pino, A., Buts, L., Wyns, L., Loris, R.

Revision History  

• Version 1.0: 2006-07-25
  Type: Initial release
  
• Version 1.1: 2007-10-16
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-10-18
  Changes: Advisory, Refinement description
• Version 2.0: 2019-12-25
  Changes: Database references, Derived calculations, Polymer sequence
• Version 3.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary