Getting Hold of the Tobamovirus Particle-Why and How? Purification Routes over Time and a New Customizable Approach

Area of Science:

• Virology
• Nanotechnology
• Biochemistry

Background:

• Tobamoviruses are significant plant pathogens and increasingly utilized as nanocarriers.
• Historical and current motivations for tobamovirus purification range from disease research to advanced applications.
• Efficient purification methods are crucial for harnessing tobamovirus properties.

Purpose of the Study:

• To provide a comprehensive overview of tobamovirus purification techniques.
• To introduce a novel, efficient, and adaptable method for tobamovirus isolation.
• To facilitate the routine practical use of tobamoviruses in various scientific fields.

Main Methods:

• Review of historical and contemporary tobamovirus purification strategies.
• Development of a new protocol combining selective re-solubilization of polyethylene glycol (PEG) precipitates.
• Density step gradient centrifugation using iodixanol formulations for virion isolation.

Main Results:

• A novel purification protocol yielding ready-to-use tobamovirus suspensions was established.
• The method is adaptable to different tobamovirus species and functionalized virions.
• The protocol integrates historical insights with modern techniques for improved efficiency.

Conclusions:

• The developed method offers an efficient and user-friendly approach to tobamovirus purification.
• This protocol can serve as a foundation for routine preparation procedures.
• Further developments could enhance the practical utility of tobamoviruses as soft-matter nanorods.