2CN2

Crystal Structures of Clostridium thermocellum Xyloglucanase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.176 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structures of Clostridium Thermocellum Xyloglucanase, Xgh74A, Reveal the Structural Basis for Xyloglucan Recognition and Degradation.

Martinez-Fleites, C.Guerreiro, C.I.Baumann, M.J.Taylor, E.J.Prates, J.A.M.Ferreira, L.M.A.Fontes, C.M.G.A.Brumer, H.Davies, G.J.

(2006) J.Biol.Chem. 281: 24922

  • DOI: 10.1074/jbc.M603583200
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The enzymatic degradation of the plant cell wall is central both to the natural carbon cycle and, increasingly, to environmentally friendly routes to biomass conversion, including the production of biofuels. The plant cell wall is a complex composite ...

    The enzymatic degradation of the plant cell wall is central both to the natural carbon cycle and, increasingly, to environmentally friendly routes to biomass conversion, including the production of biofuels. The plant cell wall is a complex composite of cellulose microfibrils embedded in diverse polysaccharides collectively termed hemicelluloses. Xyloglucan is one such polysaccharide whose hydrolysis is catalyzed by diverse xyloglucanases. Here we present the structure of the Clostridium thermocellum xyloglucanase Xgh74A in both apo and ligand-complexed forms. The structures, in combination with mutagenesis data on the catalytic residues and the kinetics and specificity of xyloglucan hydrolysis reveal a complex subsite specificity accommodating seventeen monosaccharide moieties of the multibranched substrate in an open substrate binding terrain.


    Organizational Affiliation

    York Structural Biology Laboratory, Department of Chemitry, University of York, York YO10 5YW, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
BETA-1,4-XYLOGLUCAN HYDROLASE
A, B, C, D
737Clostridium thermocellumMutation(s): 0 
Gene Names: xghA
EC: 3.2.1.-
Find proteins for Q70DK5 (Clostridium thermocellum)
Go to UniProtKB:  Q70DK5
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CD
Query on CD

Download SDF File 
Download CCD File 
A, B, C, D
CADMIUM ION
Cd
WLZRMCYVCSSEQC-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.176 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 100.437α = 90.00
b = 97.941β = 97.62
c = 199.122γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
REFMACrefinement
SCALAdata scaling
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-05-22
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance