Heat-Stable Hazelnut Profilin: Molecular Dynamics Simulations and Immunoinformatics Analysis

Area of Science:

• Food Science
• Allergen Research
• Computational Biology

Background:

• Profilins, like hazelnut profilin (Cor a 2), are panallergens known for cross-reactivity.
• Understanding hazelnut allergen thermostability is crucial for managing food allergies.

Purpose of the Study:

• To evaluate the thermostability of hazelnut profilin (Cor a 2).
• To investigate the impact of heat treatment on hazelnut profilin's allergenic potential and cross-reactivity.

Main Methods:

• Molecular dynamics simulations (Gromacs software) including annealing, equilibrium, and production simulations.
• Immunoinformatic techniques were employed to assess allergenicity and cross-reactivity.
• Simulations were conducted at temperatures ranging from 300 K to 500 K.

Main Results:

• Hazelnut profilin (Cor a 2) demonstrated remarkable thermostability up to 400 K, maintaining structural integrity.
• Temperatures of 450 K and 500 K did not appear to reduce allergenicity but could potentially increase cross-reactivity with other food allergens.

Conclusions:

• Hazelnut profilin (Cor a 2) is highly thermostable up to 400 K, preventing structural unfolding.
• Elevated heat treatments (450-500 K) may alter profilin's cross-reactivity profile, necessitating further investigation for allergen management strategies.