Biological Assembly 1  

 3D View: Structure

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 29931.70 
• Atom Count: 2116 
• Residue Count: 270 
• Unique protein chains: 1

1BKZ

CRYSTAL STRUCTURE OF HUMAN GALECTIN-7

• DOI: 10.2210/pdb1BKZ/pdb

• Classification: LECTIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 1998-07-13 Released: 1998-11-04 
• Deposition Author(s): Leonidas, D.D., Acharya, K.R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.9 Å
• R-Value Free: 0.260 
• R-Value Work: 0.194 

Literature

Structural basis for the recognition of carbohydrates by human galectin-7.

Leonidas, D.D., Vatzaki, E.H., Vorum, H., Celis, J.E., Madsen, P., Acharya, K.R.

(1998) Biochemistry 37: 13930-13940

• PubMed: 9760227 
• DOI: 10.1021/bi981056x
• Primary Citation of Related Structures:  
  5GAL, 4GAL, 3GAL, 2GAL


• PubMed Abstract: 
  

Knowledge about carbohydrate recognition domains of galectins, formerly known as S-type animal lectins, is important in understanding their role(s) in cell-cell interactions. Here we report the crystal structure of human galectin-7 (hGal-7), in free form and in the presence of galactose, galactosamine, lactose, and N-acetyl-lactosamine at high resolution. This is the first structure of a galectin determined in both free and carbohydrate-bound forms. The structure shows a fold similar to that of the prototype galectins -1 and -2, but has greater similarity to a related galectin molecule, Gal-10. Even though the carbohydrate-binding residues are conserved, there are significant changes in this pocket due to shortening of a loop structure. The monomeric hGal-7 molecule exists as a dimer in the crystals, but adopts a packing arrangement considerably different from that of Gal-1 and Gal-2, which has implications for carbohydrate recognition.

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Organizational Affiliation: 

Department of Biology and Biochemistry, University of Bath, UK.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
GALECTIN-7	A, B	135	Homo sapiens	Mutation(s): 0  Gene Names: LGALS7, LGALS7B (PIG1)
Find proteins for P47929 (Homo sapiens) Go to Gene View: LGALS7 LGALS7B Go to UniProtKB:  P47929

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.9 Å
• R-Value Free: 0.260 
• R-Value Work: 0.194 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 54.230	α = 90.00
b = 65.340	β = 90.00
c = 73.600	γ = 90.00

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
SHARP	phasing
X-PLOR	phasing
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1998-07-13 
• Released Date: 1998-11-04 
• Deposition Author(s): Leonidas, D.D., Acharya, K.R.

Revision History 

• Version 1.0: 1998-11-04
  Type: Initial release
• Version 1.1: 2008-03-24
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance