1UKG

Pterocarps angolensis lectin PAL in complex with methyl-alpha-mannose

• PDB DOI: https://doi.org/10.2210/pdb1UKG/pdb

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


• Deposited: 2003-08-21 Released: 2004-02-10 
• Deposition Author(s): Loris, R., Van Walle, I., De Greve, H., Beeckmans, S., Deboeck, F., Wyns, L., Bouckaert, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.215 
• R-Value Work: 0.189 
• R-Value Observed: 0.191 

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: 55.69 kDa 
• Atom Count: 4,008 
• Modelled Residue Count: 482 
• 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

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MMA	C [auth A], F [auth B]	methyl alpha-D-mannopyranoside C7 H14 O6 HOVAGTYPODGVJG-VEIUFWFVSA-N
MN	D [auth A], G [auth B]	MANGANESE (II) ION Mn WAEMQWOKJMHJLA-UHFFFAOYSA-N
CA	E [auth A], H [auth B]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-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: 1.70 Å
• R-Value Free: 0.215 
• R-Value Work: 0.189 
• R-Value Observed: 0.191 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 56.82	α = 90
b = 83.67	β = 90
c = 123	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2004-02-10 
Deposition Author(s): Loris, R., Van Walle, I., De Greve, H., Beeckmans, S., Deboeck, F., Wyns, L., Bouckaert, J.

Revision History  

• Version 1.0: 2004-02-10
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 2.0: 2019-12-25
  Changes: Data collection, Database references, Derived calculations, Polymer sequence
• Version 2.1: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Derived calculations, Structure summary
• Version 2.2: 2023-12-27
  Changes: Data collection, Database references, Structure summary