What is it about?
Proteins change their shape as they are heated, and these structural changes affect how they behave in foods and many industrial applications. In this study, we used molecular dynamics simulations—a computer technique that models the movement of atoms over time—to investigate how increasing temperature influences the structure and flexibility of β-lactoglobulin, one of the main proteins found in whey. Our simulations reveal how the protein gradually responds to heat, identifying which regions remain stable and which become more flexible or begin to unfold as the temperature rises. We also examined how the protein’s internal motions and relaxation processes change, providing insight into the early stages of heat-induced structural transitions before complete denaturation occurs. These findings help explain the molecular mechanisms responsible for the thermal behaviour of β-lactoglobulin and are consistent with previous experimental observations that heating progressively destabilizes specific structural elements of the protein. A better understanding of these temperature-dependent changes is important because β-lactoglobulin is widely used in dairy products and food processing, where heating influences texture, stability, and functionality. Beyond food science, the study demonstrates how molecular simulations can complement laboratory experiments by revealing atomic-level details that are difficult to observe directly. This knowledge can support the design of improved food-processing methods and contribute to the development of protein-based materials with tailored properties
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Why is it important?
Understanding how proteins respond to heat is essential for improving food quality, safety, and processing efficiency. β-Lactoglobulin is one of the most abundant whey proteins and plays an important role in the texture, stability, and nutritional properties of dairy products. By revealing how its structure changes at different temperatures, this study provides valuable molecular-level insights that are difficult to obtain using experiments alone. The findings can help researchers develop more accurate models of protein behaviour, optimize thermal processing conditions, and support the design of protein-based ingredients and biomaterials with improved functionality. More broadly, this work demonstrates the value of molecular dynamics simulations as a powerful tool for studying temperature-induced structural changes in biologically important proteins.
Perspectives
This study highlights how computational modelling can complement experimental techniques by providing an atomistic view of protein dynamics that cannot be directly observed in the laboratory. We hope these findings will encourage the wider use of molecular dynamics simulations to investigate the stability and function of food proteins under different environmental conditions. In the future, similar approaches could be extended to other proteins, protein mixtures, and processing conditions, contributing to the development of more sustainable food technologies and improved protein-based products. Combining simulations with experimental validation will further enhance our understanding of the relationship between protein structure, dynamics, and functionality.
Dr Antreas Afantitis
NovaMechanics Ltd
Read the Original
This page is a summary of: Molecular dynamics simulations of temperature-dependent PET binding in PETase, ThermoPETase, and FAST-PETase, RSC Advances, January 2026, Royal Society of Chemistry,
DOI: 10.1039/d6ra00343e.
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