Related Experiment Video
Updated: Jun 10, 2026

Elucidating β-1,3-Glucanase and Peroxidase Physicochemical Properties of Wheat Cell Wall Defense Mechanism Against Diuraphis noxia Infestation
Published on: July 26, 2024
Molecular mechanism of hidden matrix-bound deoxynivalenol binding to proteins in wheat
Sucheng Zhang1, Mengmeng Li1, Ruihu Wang1
1College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, China.
Abstract:
Protein-bound hidden deoxynivalenol (DON) poses significant health risks during mycotoxin degradation in wheat matrices. This study combined spectroscopic analyses and molecular docking to elucidate DON-gliadin interaction mechanisms. DON induced static fluorescence quenching of gliadin (quenching constant: 0.98 × 103 L·mol-1) and formed a stable 1:1 complex through hydrogen bonding, van der Waals, and hydrophobic interactions (ΔG = -14.07 kJ·mol-1; binding constant = 0.289 × 103 L·mol-1). The interaction altered gliadin secondary structure, reducing α-helices (4.29%) and β-sheets (2.86%) while increasing β-turns (3.75%) and random coils (3.35%), and decreased surface hydrophobicity. These structural changes were confirmed by FTIR, synchronous fluorescence, and CD spectroscopy. Molecular docking further showed DON binds to residues in the gliadin domain, with Gln223 and Phe238 playing key roles (binding energy: -5.851 kcal/mol; binding distances: 1.81 Å and 5.41 Å). These findings support the development of targeted detoxification strategies for hidden DON, contributing to improved wheat safety and protection of human health.
More Related Videos
10:01Quantification of Fungal Colonization, Sporogenesis, and Production of Mycotoxins Using Kernel Bioassays
Published on: April 23, 2012
08:14Analysis of the Solvent Accessibility of Cysteine Residues on Maize rayado fino virus Virus-like Particles Produced in Nicotiana benthamiana Plants and Cross-linking of Peptides to VLPs
Published on: February 14, 2013
Related Concept Videos
Protein-Drug Binding: Mechanism and Kinetics
Various forces drive these interactions, including hydrogen bonds, hydrophobic interactions, ionic bonds, electrostatic interactions, and van der Waals forces. These bonds enable drugs to bind to specific sites on proteins,...
Ligand Binding and Linkage
Antifungal Agents
Inhibitors Of Virion Release
Protein Denaturation