Feruloyl esterase from Lactobacillus acidophilus

Experimental Data Snapshot

  • Resolution: 2.30 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.232 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


Feruloyl Esterase ( La Fae) from Lactobacillus acidophilus : Structural Insights and Functional Characterization for Application in Ferulic Acid Production.

Jeon, S.Hwang, J.Do, H.Le, L.T.H.L.Lee, C.W.Yoo, W.Lee, M.J.Shin, S.C.Kim, K.K.Kim, H.W.Lee, J.H.

(2023) Int J Mol Sci 24

  • DOI: https://doi.org/10.3390/ijms241311170
  • Primary Citation of Related Structures:  
    7XRH, 7XRI

  • PubMed Abstract: 

    Ferulic acid and related hydroxycinnamic acids, used as antioxidants and preservatives in the food, cosmetic, pharmaceutical and biotechnology industries, are among the most abundant phenolic compounds present in plant biomass. Identification of novel compounds that can produce ferulic acid and hydroxycinnamic acids, that are safe and can be mass-produced, is critical for the sustainability of these industries. In this study, we aimed to obtain and characterize a feruloyl esterase ( La Fae) from Lactobacillus acidophilus . Our results demonstrated that La Fae reacts with ethyl ferulate and can be used to effectively produce ferulic acid from wheat bran, rice bran and corn stalks. In addition, xylanase supplementation was found to enhance La Fae enzymatic hydrolysis, thereby augmenting ferulic acid production. To further investigate the active site configuration of La Fae, crystal structures of unliganded and ethyl ferulate-bound La Fae were determined at 2.3 and 2.19 Å resolutions, respectively. Structural analysis shows that a Phe34 residue, located at the active site entrance, acts as a gatekeeper residue and controls substrate binding. Mutating this Phe34 to Ala produced an approximately 1.6-fold increase in La Fae activity against p -nitrophenyl butyrate. Our results highlight the considerable application potential of La Fae to produce ferulic acid from plant biomass and agricultural by-products.

  • Organizational Affiliation

    Department of Chemistry, College of Natural Science, Sookmyung Women's University, Seoul 04310, Republic of Korea.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cinnamoyl esterase
A, B
248Lactobacillus acidophilusMutation(s): 0 
EC: 3.1.1
Find proteins for Q5FI30 (Lactobacillus acidophilus (strain ATCC 700396 / NCK56 / N2 / NCFM))
Explore Q5FI30 
Go to UniProtKB:  Q5FI30
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5FI30
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.30 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.232 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.188α = 90
b = 74.59β = 90
c = 123.367γ = 90
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Research Foundation (NRF, Korea)Korea, Republic OfPM22030

Revision History  (Full details and data files)

  • Version 1.0: 2023-05-17
    Type: Initial release
  • Version 1.1: 2023-09-20
    Changes: Data collection, Database references
  • Version 1.2: 2023-11-29
    Changes: Refinement description