1HL8

CRYSTAL STRUCTURE OF THERMOTOGA MARITIMA ALPHA-FUCOSIDASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.188 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Crystal Structure of Thermotoga Maritima Alpha-L-Fucosidase. Insights Into the Catalytic Mechanism and the Molecular Basis for Fucosidosis.

Sulzenbacher, G.Bignon, C.Nishimura, T.Tarling, C.A.Withers, S.G.Henrissat, B.Bourne, Y.

(2004) J Biol Chem 279: 13119

  • DOI: 10.1074/jbc.M313783200
  • Primary Citation of Related Structures:  
    1HL8, 1HL9, 1ODU

  • PubMed Abstract: 
  • Fucosylated glycoconjugates are involved in numerous biological events, and alpha-l-fucosidases, the enzymes responsible for their processing, are therefore of crucial importance. Deficiency in alpha-l-fucosidase activity is associated with fucosidosis, a lysosomal storage disorder characterized by rapid neurodegeneration, resulting in severe mental and motor deterioration ...

    Fucosylated glycoconjugates are involved in numerous biological events, and alpha-l-fucosidases, the enzymes responsible for their processing, are therefore of crucial importance. Deficiency in alpha-l-fucosidase activity is associated with fucosidosis, a lysosomal storage disorder characterized by rapid neurodegeneration, resulting in severe mental and motor deterioration. To gain insight into alpha-l-fucosidase function at the molecular level, we have determined the crystal structure of Thermotoga maritima alpha-l-fucosidase. This enzyme assembles as a hexamer and displays a two-domain fold, composed of a catalytic (beta/alpha)(8)-like domain and a C-terminal beta-sandwich domain. The structures of an enzyme-product complex and of a covalent glycosyl-enzyme intermediate, coupled with kinetic and mutagenesis studies, allowed us to identify the catalytic nucleophile, Asp(244), and the Brønsted acid/base, Glu(266). Because T. maritima alpha-l-fucosidase occupies a unique evolutionary position, being far more closely related to the mammalian enzymes than to any other prokaryotic homolog, a structural model of the human enzyme was built to document the structural consequences of the genetic mutations associated with fucosidosis.


    Organizational Affiliation

    Architecture et Fonction des Macromolécules Biologiques, UMR 6098, CNRS, and Universités Aix-Marseille I and II, 31 Chemin J. Aiguier, F-13402 Marseille Cedex 20, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PUTATIVE ALPHA-L-FUCOSIDASEA, B449Thermotoga maritima MSB8Mutation(s): 0 
Gene Names: TM_0306
EC: 3.2.1.51
UniProt
Find proteins for Q9WYE2 (Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8))
Explore Q9WYE2 
Go to UniProtKB:  Q9WYE2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9WYE2
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
KCX
Query on KCX
A, B L-PEPTIDE LINKINGC7 H14 N2 O4LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.188 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 172.462α = 90
b = 172.462β = 90
c = 167.414γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALAdata scaling
SOLVEphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-01-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance