7ALS

Alpha and beta Lactose isomer structure of Galectin 8, N-terminal domain

• PDB DOI: https://doi.org/10.2210/pdb7ALS/pdb

• Classification: SUGAR BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli 'BL21-Gold(DE3)pLysS AG
• Mutation(s): No 


• Deposited: 2020-10-07 Released: 2021-11-03 
• Deposition Author(s): Hakansson, M., Walse, B., Diehl, C., Kovacic, R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.35 Å
• R-Value Free: 0.199 
• R-Value Work: 0.149 
• R-Value Observed: 0.152 

Literature

Alpha and beta Lactose isomer structure of Galectin 8, N-terminal domain

Hassan, M., Hakansson, M.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly Evidence: cross-linking

Macromolecule Content

• Total Structure Weight: 36.52 kDa 
• Atom Count: 2,939 
• Modelled Residue Count: 299 
• Deposited Residue Count: 310 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Galectin-8	A, B	155	Homo sapiens	Mutation(s): 0  Gene Names: LGALS8
UniProt & NIH Common Fund Data Resources
Find proteins for O00214 (Homo sapiens) Explore O00214  Go to UniProtKB:  O00214
PHAROS:  O00214 GTEx:  ENSG00000116977

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-galactopyranose-(1-4)-beta-D-glucopyranose	C [auth E], E [auth G]	2		N/A
Glycosylation Resources
GlyTouCan:  G84224TW GlyCosmos:  G84224TW GlyGen:  G84224TW

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-galactopyranose-(1-4)-alpha-D-glucopyranose	D [auth F], F [auth H]	2		N/A
Glycosylation Resources
GlyTouCan:  G88362QR GlyCosmos:  G88362QR GlyGen:  G88362QR

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CL	G [auth A], H [auth A], I [auth B]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Biologically Interesting Molecules (External Reference) 2 Unique

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

Entity ID: 3
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900008	D [auth F], F [auth H]	alpha-lactose	Oligosaccharide / Nutrient

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.35 Å
• R-Value Free: 0.199 
• R-Value Work: 0.149 
• R-Value Observed: 0.152 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.56	α = 90
b = 62.54	β = 90
c = 84.65	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2021-11-03 
Deposition Author(s): Hakansson, M., Walse, B., Diehl, C., Kovacic, R.

Revision History  

• Version 1.0: 2021-11-03
  Type: Initial release
  
• Version 1.1: 2024-01-31
  Changes: Data collection, Refinement description