3GAL

CRYSTAL STRUCTURE OF HUMAN GALECTIN-7 IN COMPLEX WITH GALACTOSAMINE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.211 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

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

  • DOI: 10.1021/bi981056x
  • Primary Citation of Related Structures:  1BKZ, 2GAL, 4GAL, 5GAL

  • 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 ...

    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.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GALECTIN-7
A, B
135Homo sapiensGene Names: LGALS7, LGALS7B (PIG1)
Find proteins for P47929 (Homo sapiens)
Go to Gene View: LGALS7 LGALS7B
Go to UniProtKB:  P47929
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
1GN
Query on 1GN

Download SDF File 
Download CCD File 
A, B
2-DEOXY-2-AMINOGALACTOSE
C6 H13 N O5
MSWZFWKMSRAUBD-VFUOTHLCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.211 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 95.590α = 90.00
b = 54.620β = 115.06
c = 61.200γ = 90.00
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORmodel building
DENZOdata reduction
SCALEPACKdata scaling
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-11-04
    Type: Initial release
  • Version 1.1: 2008-03-25
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2011-11-16
    Type: Atomic model