7Z2V

Ferulic acid esterase variant S114A from Lactobacillus buchneri


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.177 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.168 

Starting Model: other
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wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal structure of the feruloyl esterase from Lentilactobacillus buchneri reveals a novel homodimeric state.

Kasmaei, K.M.Kalyani, D.C.Reichenbach, T.Jimenez-Quero, A.Vilaplana, F.Divne, C.

(2022) Front Microbiol 13: 1050160-1050160

  • DOI: https://doi.org/10.3389/fmicb.2022.1050160
  • Primary Citation of Related Structures:  
    7Z2U, 7Z2V, 7Z2X

  • PubMed Abstract: 

    Ferulic acid is a common constituent of the plant cell-wall matrix where it decorates and can crosslink mainly arabinoxylans to provide structural reinforcement. Microbial feruloyl esterases (FAEs) specialize in catalyzing hydrolysis of the ester bonds between phenolic acids and sugar residues in plant cell-wall polysaccharides such as arabinoxylan to release cinnamoyl compounds. Feruloyl esterases from lactic acid bacteria (LAB) have been highlighted as interesting enzymes for their potential applications in the food and pharmaceutical industries; however, there are few studies on the activity and structure of FAEs of LAB origin. Here, we report the crystal structure and biochemical characterization of a feruloyl esterase ( Lb FAE) from Lentilactobacillus buchneri , a LAB strain that has been used as a silage additive. The Lb FAE structure was determined in the absence and presence of product (FA) and reveals a new type of homodimer association not previously observed for fungal or bacterial FAEs. The two subunits associate to restrict access to the active site such that only single FA chains attached to arabinoxylan can be accommodated, an arrangement that excludes access to FA cross-links between arabinoxylan chains. This narrow specificity is further corroborated by the observation that no FA dimers are produced, only FA, when feruloylated arabinoxylan is used as substrate. Docking of arabinofuranosyl-ferulate in the Lb FAE structure highlights the restricted active site and lends further support to our hypothesis that Lb FAE is specific for single FA side chains in arabinoxylan.


  • Organizational Affiliation

    Department of Industrial Biotechnology, School of Engineering Sciences in Chemistry, Biotechnology, and Health (CBH), KTH Royal Institute of Technology, Stockholm, Sweden.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Ferulic acid esterase
A, B
282Lentilactobacillus buchneriMutation(s): 1 
Gene Names: faeA
EC: 3.1.1.73
UniProt
Find proteins for D7RU28 (Lentilactobacillus buchneri)
Explore D7RU28 
Go to UniProtKB:  D7RU28
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupD7RU28
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.177 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.168 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 79.96α = 90
b = 79.96β = 90
c = 227.94γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHENIXphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Other governmentSwedenFormas 2016-01449

Revision History  (Full details and data files)

  • Version 1.0: 2022-11-30
    Type: Initial release
  • Version 1.1: 2023-06-14
    Changes: Database references
  • Version 1.2: 2024-05-01
    Changes: Data collection, Refinement description