4ZRS

Crystal structure of a cloned feruloyl esterase from a soil metagenomic library


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.150 
  • R-Value Observed: 0.152 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Enhancing the Thermostability of Feruloyl Esterase EstF27 by Directed Evolution and the Underlying Structural Basis

Cao, L.C.Chen, R.Xie, W.Liu, Y.H.

(2015) J Agric Food Chem 63: 8225-8233

  • DOI: https://doi.org/10.1021/acs.jafc.5b03424
  • Primary Citation of Related Structures:  
    4ZRS

  • PubMed Abstract: 

    To improve the thermostability of EstF27, two rounds of random mutagenesis were performed. A thermostable mutant, M6, with six amino acid substitutions was obtained. The half-life of M6 at 55 °C is 1680 h, while that of EstF27 is 0.5 h. The Kcat/Km value of M6 is 1.9-fold higher than that of EstF27. The concentrations of ferulic acid released from destarched wheat bran by EstF27 and M6 at their respective optimal temperatures were 223.2 ± 6.8 and 464.8 ± 11.9 μM, respectively. To further understand the structural basis of the enhanced thermostability, the crystal structure of M6 is determined at 2.0 Å. Structural analysis shows that a new disulfide bond and hydrophobic interactions formed by the mutations may play an important role in stabilizing the protein. This study not only provides us with a robust catalyst, but also enriches our knowledge about the structure-function relationship of feruloyl esterase.


  • Organizational Affiliation

    School of Life Sciences, ‡State Key Laboratory for Biocontrol, School of Life Sciences, and §South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Sun Yat-sen University , Guangzhou 510275, People's Republic of China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Esterase
A, B
306uncultured bacteriumMutation(s): 6 
UniProt
Find proteins for E7DJY5 (uncultured bacterium)
Explore E7DJY5 
Go to UniProtKB:  E7DJY5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupE7DJY5
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
SEB
Query on SEB
A, B
L-PEPTIDE LINKINGC10 H13 N O5 SSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.150 
  • R-Value Observed: 0.152 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.156α = 90
b = 101.79β = 110.62
c = 69.822γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
CrysalisProdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Sciences Foundation of ChinaChina31100579
Guangdong Innovative Research TeamChina2011Y038

Revision History  (Full details and data files)

  • Version 1.0: 2016-02-03
    Type: Initial release
  • Version 1.1: 2023-11-08
    Changes: Data collection, Database references, Derived calculations, Refinement description