Additive-based protein stabilization for stress-prone and unstable proteins

Area of Science:

• Biochemistry
• Protein Science
• Chemical Engineering

Background:

• Traditional protein-stabilizing additive studies use dilute solutions and simple proteins.
• These model systems offer fundamental insights but have limited applicability to real-world scenarios.
• Practical protein handling involves high concentrations and interfacial stresses, posing unique stabilization challenges.

Purpose of the Study:

• To bridge the gap between fundamental additive-protein interactions and practical applications.
• To summarize additive-based stabilization strategies for process-related stresses and challenging protein classes.
• To encourage the use of additives for stabilizing proteins under difficult conditions.

Main Methods:

• Leveraging insights from established model systems.
• Summarizing additive strategies for high-concentration conditions and interfacial stress.
• Highlighting stabilization approaches for membrane proteins, viral spike proteins, and intrinsically disordered proteins.

Main Results:

• Additive strategies can be tailored to address process-related stresses like high concentrations and interfacial stress.
• Specific additive approaches are effective for stabilizing challenging protein classes.
• Insights from dilute solution studies can inform practical stabilization methods.

Conclusions:

• Additive-based stabilization is essential for practical protein research and industrial applications.
• This review provides a framework for selecting and applying additives to overcome protein instability.
• The findings encourage broader adoption of protein-stabilizing additives in demanding contexts.