9GF1 | pdb_00009gf1

Cysteine-less human Galectin-3 C173S mutant carbohydrate recognition domain

• PDB DOI: https://doi.org/10.2210/pdb9GF1/pdb

• Classification: SUGAR BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2024-08-08 Released: 2025-08-20 
• Deposition Author(s): Blaha, J., Dubanych, Y., Skorepa, O., Vanek, O.
• Funding Organization(s): Czech Science Foundation, Ministry of Education, Youth and Sports of the Czech Republic

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 
  0.186 (Depositor), 0.186 (DCC) 
• R-Value Work: 
  0.161 (Depositor), 0.161 (DCC) 

Starting Model: experimental

Literature

Galectin-3 carbohydrate recognition is solely responsible for its binding to the NK cell activation receptor NKp30.

Blaha, J., Dubanych, Y., Skorepa, O., Vanek, O.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 16.36 kDa 
• Atom Count: 1,309 
• Modeled Residue Count: 138 
• Deposited Residue Count: 139 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Galectin-3	A	139	Homo sapiens	Mutation(s): 1  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 [auth C]	2		N/A
Glycosylation Resources
GlyTouCan:  G84224TW GlyCosmos:  G84224TW GlyGen:  G84224TW

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	C [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
CL	D [auth A], E [auth A], F [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Biologically Interesting Molecules (External Reference) 1 Unique

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free:  0.186 (Depositor), 0.186 (DCC) 
• R-Value Work:  0.161 (Depositor), 0.161 (DCC) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 37.02	α = 90
b = 58.047	β = 90
c = 63.184	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
Aimless	data scaling
MOLREP	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-08-20 
Deposition Author(s): Blaha, J., Dubanych, Y., Skorepa, O., Vanek, O.

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Funding Organization	Location	Grant Number
Czech Science Foundation	Czech Republic	23-08490L
Ministry of Education, Youth and Sports of the Czech Republic	Czech Republic	LTC20078

Revision History  

• Version 1.0: 2025-08-20
  Type: Initial release