4R9D

Crystal structure of Human galectin-3 CRD in complex with lactose (pH 7.9, PEG6000)

• PDB DOI: https://doi.org/10.2210/pdb4R9D/pdb

• Classification: SUGAR BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2014-09-04 Released: 2015-03-11 
• Deposition Author(s): Su, J.Y.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.24 Å
• R-Value Free: 0.180 
• R-Value Work: 0.172 
• R-Value Observed: 0.172 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 16.58 kDa 
• Atom Count: 1,423 
• Modelled Residue Count: 138 
• Deposited Residue Count: 144 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Galectin-3	A	144	Homo sapiens	Mutation(s): 0  Gene Names: LGALS3, MAC2
UniProt & NIH Common Fund Data Resources
Find proteins for P17931 (Homo sapiens) Explore P17931  Go to UniProtKB:  P17931
PHAROS:  P17931 GTEx:  ENSG00000131981

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-galactopyranose-(1-4)-beta-D-glucopyranose	B	2		N/A
Glycosylation Resources
GlyTouCan:  G84224TW GlyCosmos:  G84224TW GlyGen:  G84224TW

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 2
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900004	B	beta-lactose	Oligosaccharide / Nutrient

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.24 Å
• R-Value Free: 0.180 
• R-Value Work: 0.172 
• R-Value Observed: 0.172 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 36.085	α = 90
b = 57.021	β = 90
c = 61.85	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-03-11 
Deposition Author(s): Su, J.Y.

Revision History  

• Version 1.0: 2015-03-11
  Type: Initial release
  
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Structure summary
• Version 2.1: 2022-08-24
  Changes: Database references, Structure summary