5B5S

Crystal structure of a carbohydrate esterase family 3 from Talaromyces cellulolyticus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.145 
  • R-Value Observed: 0.148 

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This is version 1.2 of the entry. See complete history


Literature

Crystal structure of an acetylesterase from Talaromyces cellulolyticus and the importance of a disulfide bond near the active site

Watanabe, M.Fukada, H.Inoue, H.Ishikawa, K.

(2015) FEBS Lett 589: 1200-1206

  • DOI: 10.1016/j.febslet.2015.03.020
  • Primary Citation of Related Structures:  
    5B5S

  • PubMed Abstract: 
  • Carbohydrate esterase catalyzes the de-O or de-N-acylation of substituted saccharides in plant cell walls and thus has great potential for industrial biomass saccharification. We recently identified the putative carbohydrate esterase family 3 (CE3) f ...

    Carbohydrate esterase catalyzes the de-O or de-N-acylation of substituted saccharides in plant cell walls and thus has great potential for industrial biomass saccharification. We recently identified the putative carbohydrate esterase family 3 (CE3) from Talaromyces cellulolyticus. Here, we prepared the recombinant catalytic domain of the enzyme and crystallized it. The crystal structure was determined to 1.5 Å resolution. From the structural analysis, it was elucidated that a n-octyl-β-D-glucopyranoside bound to near the catalytic triad (Ser10, Asp179 and His182) and was buried in the active site cavity. Site-directed mutagenesis showed that the N-terminal disulfide bond located near the catalytic triad is involved in the activity and structural stability of the enzyme.


    Organizational Affiliation

    Biomass Refinery Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 3-11-32 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan. Electronic address: kazu-ishikawa@aist.go.jp.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Acetic acidA207Talaromyces cellulolyticusMutation(s): 0 
Gene Names: axeTCE0_004r00149
Find proteins for A0A0A8IBJ8 (Talaromyces cellulolyticus)
Explore A0A0A8IBJ8 
Go to UniProtKB:  A0A0A8IBJ8
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BOG
Query on BOG

Download CCD File 
A
octyl beta-D-glucopyranoside
C14 H28 O6
HEGSGKPQLMEBJL-RKQHYHRCSA-N
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
SO3
Query on SO3

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A
SULFITE ION
O3 S
LSNNMFCWUKXFEE-UHFFFAOYSA-L
 Ligand Interaction
CA
Query on CA

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A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.145 
  • R-Value Observed: 0.148 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.905α = 90
b = 70.905β = 90
c = 87.093γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-11-16
    Type: Initial release
  • Version 1.1: 2020-02-26
    Changes: Data collection, Database references, Derived calculations
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary