Jeon_2023_Int.J.Mol.Sci_24_11170

Reference

Title : Feruloyl Esterase (LaFae) from Lactobacillus acidophilus: Structural Insights and Functional Characterization for Application in Ferulic Acid Production - Jeon_2023_Int.J.Mol.Sci_24_11170
Author(s) : Jeon S , Hwang J , Do H , Le L , Lee CW , Yoo W , Lee MJ , Shin SC , Kim KK , Kim HW , Lee JH
Ref : Int J Mol Sci , 24 :11170 , 2023
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 (LaFae) from Lactobacillus acidophilus. Our results demonstrated that LaFae 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 LaFae enzymatic hydrolysis, thereby augmenting ferulic acid production. To further investigate the active site configuration of LaFae, crystal structures of unliganded and ethyl ferulate-bound LaFae were determined at 2.3 and 2.19 A 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 LaFae activity against p-nitrophenyl butyrate. Our results highlight the considerable application potential of LaFae to produce ferulic acid from plant biomass and agricultural by-products.

PubMedSearch : Jeon_2023_Int.J.Mol.Sci_24_11170
PubMedID: 37446348
Gene_locus related to this paper: lacac-q5fi30

Related information

Substrate Ethyl-ferulate
Gene_locus Ethyl-ferulate    lacac-q5fi30
Structure Ethyl-ferulate    lacac-q5fi30    7XRH    7XRI

Citations formats

Jeon S, Hwang J, Do H, Le L, Lee CW, Yoo W, Lee MJ, Shin SC, Kim KK, Kim HW, Lee JH (2023)
Feruloyl Esterase (LaFae) from Lactobacillus acidophilus: Structural Insights and Functional Characterization for Application in Ferulic Acid Production
Int J Mol Sci 24 :11170

Jeon S, Hwang J, Do H, Le L, Lee CW, Yoo W, Lee MJ, Shin SC, Kim KK, Kim HW, Lee JH (2023)
Int J Mol Sci 24 :11170