4XWL

Catalytic domain of Clostridium Cellulovorans Exgs


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.051 Å
  • R-Value Free: 0.174 
  • R-Value Work: 0.142 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structures of exoglucanase from Clostridium cellulovorans: cellotetraose binding and cleavage

Tsai, L.-C.Amiraslanov, I.Chen, H.R.Chen, Y.W.Lee, H.L.Liang, P.H.Liaw, Y.-C.

(2015) Acta Crystallogr.,Sect.F 71: 1264-1272

  • DOI: 10.1107/S2053230X15015915
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Exoglucanase/cellobiohydrolase (EC 3.2.1.176) hydrolyzes a β-1,4-glycosidic bond from the reducing end of cellulose and releases cellobiose as the major product. Three complex crystal structures of the glycosyl hydrolase 48 (GH48) cellobiohydrolase S ...

    Exoglucanase/cellobiohydrolase (EC 3.2.1.176) hydrolyzes a β-1,4-glycosidic bond from the reducing end of cellulose and releases cellobiose as the major product. Three complex crystal structures of the glycosyl hydrolase 48 (GH48) cellobiohydrolase S (ExgS) from Clostridium cellulovorans with cellobiose, cellotetraose and triethylene glycol molecules were solved. The product cellobiose occupies subsites +1 and +2 in the open active-site cleft of the enzyme-cellotetraose complex structure, indicating an enzymatic hydrolysis function. Moreover, three triethylene glycol molecules and one pentaethylene glycol molecule are located at active-site subsites -2 to -6 in the structure of the ExgS-triethylene glycol complex shown here. Modelling of glucose into subsite -1 in the active site of the ExgS-cellobiose structure revealed that Glu50 acts as a proton donor and Asp222 plays a nucleophilic role.


    Organizational Affiliation

    Molecular Science and Engineering, National Taipei University of Technology, 1, Section 3, Chung-Hsiao E. Road, Taipei 10608, Taiwan.,Institute of Biological Chemistry, Academia Sinica, 128 Academia Road, Section 2, Taipei 11529, Taiwan.,Institute of Molecular Biology, Academia Sinica, 128 Academia Road, Section 2, Taipei 11529, Taiwan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Exoglucanase S
A
681Clostridium cellulovoransMutation(s): 0 
Gene Names: exgS
EC: 3.2.1.91
Find proteins for O65986 (Clostridium cellulovorans)
Go to UniProtKB:  O65986
Small Molecules
Ligands 8 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
P33
Query on P33

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Download CCD File 
A
3,6,9,12,15,18-HEXAOXAICOSANE-1,20-DIOL
HEPTAETHYLENE GLYCOL, PEG330
C14 H30 O8
XPJRQAIZZQMSCM-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

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Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CA
Query on CA

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

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Download CCD File 
A
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
PG4
Query on PG4

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Download CCD File 
A
TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
 Ligand Interaction
PGE
Query on PGE

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Download CCD File 
A
TRIETHYLENE GLYCOL
C6 H14 O4
ZIBGPFATKBEMQZ-UHFFFAOYSA-N
 Ligand Interaction
PEG
Query on PEG

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Download CCD File 
A
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
1PE
Query on 1PE

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Download CCD File 
A
PENTAETHYLENE GLYCOL
PEG400
C10 H22 O6
JLFNLZLINWHATN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.051 Å
  • R-Value Free: 0.174 
  • R-Value Work: 0.142 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 108.243α = 90.00
b = 108.243β = 90.00
c = 182.989γ = 90.00
Software Package:
Software NamePurpose
HKLdata scaling
HKL-2000data reduction
PHENIXrefinement
HKLdata reduction
PHASERphasing
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2015-01-29 
  • Released Date: 2015-10-28 
  • Deposition Author(s): liaw, Y.-C.
  • This entry supersedes: 4KIH

Revision History 

  • Version 1.0: 2015-10-28
    Type: Initial release