3ENG

STRUCTURE OF ENDOGLUCANASE V CELLOBIOSE COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Work: 0.145 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure determination and refinement of the Humicola insolens endoglucanase V at 1.5 A resolution.

Davies, G.J.Dodson, G.Moore, M.H.Tolley, S.P.Dauter, Z.Wilson, K.S.Rasmussen, G.Schulein, M.

(1996) Acta Crystallogr.,Sect.D 52: 7-17

  • DOI: 10.1107/S0907444995009280
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The structure of the catalytic core of the endoglucanase V (EGV) from Humicola insolens has been determined by the method of multiple isomorphous replacement at 1.5 A resolution. The final model, refined with X-PLOR and PROLSQ, has a crystallographic ...

    The structure of the catalytic core of the endoglucanase V (EGV) from Humicola insolens has been determined by the method of multiple isomorphous replacement at 1.5 A resolution. The final model, refined with X-PLOR and PROLSQ, has a crystallographic R factor of 0.163 (R(free) = 0.240) with deviations from stereochemical target values of 0.012 A and 0.037 degrees for bonds and angles, respectively. The model was further refined with SHELXL, including anisotropic modelling of the protein-atom temperature factors, to give a final model with an R factor of 0.105 and an R(free) of 0.154. The initial isomorphous replacement electron-density map was poor and uninterpretable but was improved by the use of synchrotron data collected at a wavelength chosen so as to optimize the f" contribution of the anomalous scattering from the heavy atoms. The structure of H. insolens EGV consists of a six-stranded beta-barrel domain, similar to that found in a family of plant defence proteins, linked by a number of disulfide-bonded loop regions. A long open groove runs across the surface of the enzyme either side of which lie the catalytic aspartate residues. The 9 A separation of the catalytic carboxylate groups is consistent with the observation that EGV catalyzes the hydrolysis of the cellulose, beta(1-->4) links with inversion of configuration at the anomeric C1 atom. This structure is the first representative from the glycosyl hydrolase family 45.


    Related Citations: 
    • Structure and Function of Endoglucanase V
      Davies, G.J.,Dodson, G.G.,Hubbard, R.E.,Tolley, S.P.,Dauter, Z.,Wilson, K.S.,Hjort, C.,Mikkelsen, J.M.,Rasmussen, G.,Schulein, M.
      (1993) Nature 365: 362
    • Structures of Oligosaccharide-Bound Forms of the Endoglucanase V from Humicola Insolens at 1.9 A Resolution
      Davies, G.J.,Tolley, S.P.,Henrissat, B.,Hjort, C.,Schulein, M.
      (1995) Biochemistry 34: 16210


    Organizational Affiliation

    Department of Chemistry, University of York, Heslington, England.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ENDOGLUCANASE V CELLOBIOSE COMPLEX
A
213Humicola insolensMutation(s): 0 
EC: 3.2.1.4
Find proteins for P43316 (Humicola insolens)
Go to UniProtKB:  P43316
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CBI
Query on CBI

Download SDF File 
Download CCD File 
A
CELLOBIOSE
C12 H22 O11
GUBGYTABKSRVRQ-QRZGKKJRSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Work: 0.145 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 41.750α = 90.00
b = 56.180β = 93.40
c = 37.370γ = 90.00
Software Package:
Software NamePurpose
ROTAVATAdata reduction
CCP4data scaling
DENZOdata reduction
REFMACrefinement
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-06-16
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-05-02
    Type: Data collection