Single-process expression and purification of multiple recombinant proteins through cocultivation and affinity...

Area of Science:

• Biotechnology
• Molecular Biology
• Protein Biochemistry

Background:

• Simultaneous expression of multiple recombinant proteins is challenging.
• Efficient purification of multiple proteins is crucial for studying protein complexes and for industrial applications.

Purpose of the Study:

• To develop a method for simultaneous expression and individual purification of multiple recombinant proteins from a single culture.
• To facilitate the study of protein complexes and improve recombinant protein production efficiency.

Main Methods:

• Inoculating multiple seed cultures into a single growth medium for simultaneous protein expression.
• Utilizing a combination of multihistidine and modified intein affinity tags.
• Employing Ni sepharose and chitin affinity matrices for individual protein purification.

Main Results:

• Successfully expressed and purified up to three recombinant proteins simultaneously from a single mixed culture (cocultivation).
• Demonstrated the efficacy of combined affinity tags and matrices for selective protein isolation.
• The method enables rapid acquisition of multiple protein components in a single process.

Conclusions:

• Cocultivation is an efficient strategy for simultaneous recombinant protein production and purification.
• This approach can significantly streamline the study of protein complexes.
• The method holds potential for increasing efficiency at both research and industrial scales for recombinant protein manufacturing.