4Y20

Complex of human Galectin-1 and NeuAcalpha2-3Galbeta1-4Glc

• PDB DOI: https://doi.org/10.2210/pdb4Y20/pdb

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


• Deposited: 2015-02-09 Released: 2016-04-06 
• Deposition Author(s): Lin, H.Y., Hsieh, T.J., Lin, C.H.
• Funding Organization(s): Academia Sinica, Ministry of Science and Technology

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.248 
• R-Value Work: 0.209 
• R-Value Observed: 0.213 

Literature

Structural basis of human galectin-1 inhibition with Ki values in the micro- to nanomolar range

Lin, H.Y., Hsieh, T.J., Tu, Z., Huang, B.S., Wu, S.C., Chien, C.T., Hsu, S.T., Lin, C.H.

To be published.

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: 35.07 kDa 
• Atom Count: 2,182 
• Modelled Residue Count: 266 
• Deposited Residue Count: 308 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Galectin-1	A	154	Homo sapiens	Mutation(s): 0  Gene Names: LGALS1
UniProt & NIH Common Fund Data Resources
Find proteins for P09382 (Homo sapiens) Explore P09382  Go to UniProtKB:  P09382
PHAROS:  P09382 GTEx:  ENSG00000100097

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Galectin-1	B	154	Homo sapiens	Mutation(s): 0  Gene Names: LGALS1
UniProt & NIH Common Fund Data Resources
Find proteins for P09382 (Homo sapiens) Explore P09382  Go to UniProtKB:  P09382
PHAROS:  P09382 GTEx:  ENSG00000100097

Oligosaccharides

Help

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
N-acetyl-alpha-neuraminic acid-(2-3)-beta-D-galactopyranose-(1-4)-alpha-D-glucopyranose	C, D	3		N/A
Glycosylation Resources
GlyTouCan:  G92323ZH GlyCosmos:  G92323ZH GlyGen:  G92323ZH

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
CSO	A	L-PEPTIDE LINKING	C3 H7 N O3 S		CYS

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 3
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900025	C, D	3'-sialyl-alpha-lactose	Oligosaccharide / Nutrient

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.248 
• R-Value Work: 0.209 
• R-Value Observed: 0.213 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.942	α = 90
b = 58.345	β = 90
c = 111.969	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
Blu-Ice	data collection
HKL-2000	data scaling
PHASER	phasing
PDB_EXTRACT	data extraction

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2016-04-06 
Deposition Author(s): Lin, H.Y., Hsieh, T.J., Lin, C.H.

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Funding Organization	Location	Grant Number
Academia Sinica	Taiwan	AS-022316
Ministry of Science and Technology	Taiwan	102-2113-M-001-001-MY3
Ministry of Science and Technology	Taiwan	103-2113-M-001-023-MY3
Ministry of Science and Technology	Taiwan	102-2923-M-001-001-MY3

Revision History  

• Version 1.0: 2016-04-06
  Type: Initial release
  
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Non-polymer description, Structure summary