5CEL

CBH1 (E212Q) CELLOTETRAOSE COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

High-resolution crystal structures reveal how a cellulose chain is bound in the 50 A long tunnel of cellobiohydrolase I from Trichoderma reesei.

Divne, C.Stahlberg, J.Teeri, T.T.Jones, T.A.

(1998) J.Mol.Biol. 275: 309-325

  • DOI: 10.1006/jmbi.1997.1437
  • Primary Citation of Related Structures:  6CEL, 7CEL, 8CEL
  • Also Cited By: 1DY4

  • PubMed Abstract: 
  • Detailed information has been obtained, by means of protein X-ray crystallography, on how a cellulose chain is bound in the cellulose-binding tunnel of cellobiohydrolase I (CBHI), the major cellulase in the hydrolysis of native, crystalline cellulose ...

    Detailed information has been obtained, by means of protein X-ray crystallography, on how a cellulose chain is bound in the cellulose-binding tunnel of cellobiohydrolase I (CBHI), the major cellulase in the hydrolysis of native, crystalline cellulose by the fungus Trichoderma reesei. Three high-resolution crystal structures of different catalytically deficient mutants of CBHI in complex with cellotetraose, cellopentaose and cellohexaose have been refined at 1.9, 1.7 and 1.9 A resolution, respectively. The observed binding of cellooligomers in the tunnel allowed unambiguous identification of ten well-defined subsites for glucosyl units that span a length of approximately 50 A. All bound oligomers have the same directionality and orientation, and the positions of the glucosyl units in each binding site agree remarkably well between the different complexes. The binding mode observed here corresponds to that expected during productive binding of a cellulose chain. The structures support the hypothesis that hydrolysis by CBHI proceeds from the reducing towards the non-reducing end of a cellulose chain, and they provide a structural explanation for the observed distribution of initial hydrolysis products.


    Related Citations: 
    • Activity Studies and Crystal Structures of Catalytically Deficient Mutants of Cellobiohydrolase I from Trichoderma Reesei
      Stahlberg, J.,Divne, C.,Koivula, A.,Piens, K.,Claeyssens, M.,Teeri, T.T.,Jones, T.A.
      (1996) J.Mol.Biol. 264: 337
    • The Three-Dimensional Crystal Structure of the Catalytic Core of Cellobiohydrolase I from Trichoderma Reesei
      Divne, C.,Stahlberg, J.,Reinikainen, T.,Ruohonen, L.,Pettersson, G.,Knowles, J.K.,Teeri, T.T.,Jones, T.A.
      (1994) Science 265: 524
    • Crystallization and Preliminary X-Ray Studies on the Core Proteins of Cellobiohydrolase I and Endoglucanase I from Trichoderma Reesei
      Divne, C.,Sinning, I.,Stahlberg, J.,Pettersson, G.,Bailey, M.,Siika-Aho, M.,Margolles-Clark, E.,Teeri, T.,Jones, T.A.
      (1993) J.Mol.Biol. 234: 905


    Organizational Affiliation

    Department of Molecular Biology, Uppsala University, Sweden.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
1,4-BETA-D-GLUCAN CELLOBIOHYDROLASE I
A
434Hypocrea jecorinaGene Names: cbh1
EC: 3.2.1.91
Find proteins for P62694 (Hypocrea jecorina)
Go to UniProtKB:  P62694
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BGC
Query on BGC

Download SDF File 
Download CCD File 
A
BETA-D-GLUCOSE
C6 H12 O6
WQZGKKKJIJFFOK-VFUOTHLCSA-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
CO
Query on CO

Download SDF File 
Download CCD File 
A
COBALT (II) ION
Co
XLJKHNWPARRRJB-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PCA
Query on PCA
A
L-PEPTIDE LINKINGC5 H7 N O3GLU
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.196 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 83.050α = 90.00
b = 82.950β = 90.00
c = 110.850γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
X-PLORphasing
X-PLORmodel building
CCP4data scaling
DENZOdata reduction
CCP4data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-12-24
    Type: Initial release
  • Version 1.1: 2008-03-25
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance