3ZR6

STRUCTURE OF GALACTOCEREBROSIDASE FROM MOUSE IN COMPLEX WITH GALACTOSE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.44 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.177 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Insights Into Krabbe Disease from Structures of Galactocerebrosidase.

Deane, J.E.Graham, S.C.Kim, N.N.Stein, P.E.Mcnair, R.Cachon-Gonzalez, M.B.Cox, T.M.Read, R.J.

(2011) Proc.Natl.Acad.Sci.USA 108: 15169

  • DOI: 10.1073/pnas.1105639108
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Krabbe disease is a devastating neurodegenerative disease characterized by widespread demyelination that is caused by defects in the enzyme galactocerebrosidase (GALC). Disease-causing mutations have been identified throughout the GALC gene. However, ...

    Krabbe disease is a devastating neurodegenerative disease characterized by widespread demyelination that is caused by defects in the enzyme galactocerebrosidase (GALC). Disease-causing mutations have been identified throughout the GALC gene. However, a molecular understanding of the effect of these mutations has been hampered by the lack of structural data for this enzyme. Here we present the crystal structures of GALC and the GALC-product complex, revealing a novel domain architecture with a previously uncharacterized lectin domain not observed in other hydrolases. All three domains of GALC contribute residues to the substrate-binding pocket, and disease-causing mutations are widely distributed throughout the protein. Our structures provide an essential insight into the diverse effects of pathogenic mutations on GALC function in human Krabbe variants and a compelling explanation for the severity of many mutations associated with fatal infantile disease. The localization of disease-associated mutations in the structure of GALC will facilitate identification of those patients that would be responsive to pharmacological chaperone therapies. Furthermore, our structure provides the atomic framework for the design of such drugs.


    Organizational Affiliation

    Department of Haematology, Cambridge Institute for Medical Research, University of Cambridge, Addenbrooke's Hospital, Hills Road, Cambridge CB2 0XY, United Kingdom. jed55@cam.ac.uk




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GALACTOCEREBROSIDASE
A
656Mus musculusMutation(s): 0 
Gene Names: Galc
EC: 3.2.1.46
Find proteins for P54818 (Mus musculus)
Go to UniProtKB:  P54818
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
GAL
Query on GAL

Download SDF File 
Download CCD File 
A
BETA-D-GALACTOSE
C6 H12 O6
WQZGKKKJIJFFOK-FPRJBGLDSA-N
 Ligand Interaction
BMA
Query on BMA

Download SDF File 
Download CCD File 
A
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.44 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.177 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 249.548α = 90.00
b = 249.548β = 90.00
c = 77.456γ = 120.00
Software Package:
Software NamePurpose
SCALAdata scaling
MOSFLMdata reduction
PHASERphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-09-28
    Type: Initial release