Genetic Code Expansion, Protein Expression, and Protein Functionalization in Bacillus subtilis

Scheidler, Christopher M.; Vrabel, Milan and Schneider, Sabine (2020): Genetic Code Expansion, Protein Expression, and Protein Functionalization in Bacillus subtilis. In: ACS Synthetic Biology, Vol. 9, No. 3: pp. 486-493

Abstract

The site-specific chemical modification of proteins through incorporation of noncanonical amino acids enables diverse applications, such as imaging, probing, and expanding protein functions, as well as to precisely engineer therapeutics. Here we report a general strategy that allows the incorporation of noncanonical amino acids into target proteins using the amber suppression method and their efficient secretion in the biotechnological relevant expression host Bacillus subtilis. This facilitates efficient purification of target proteins directly from the supernatant, followed by their functionalization using click chemistry. We used this strategy to site-specifically introduce norbornene lysine into a single chain antibody and functionalize it with fluorophores for the detection of human target proteins.

• Item Type: Journal article
• Faculties: Chemistry and Pharmacy > Department of Chemistry
• Research Centers: Center for Integrated Protein Science Munich (CIPSM)
• Subjects: 500 Science > 540 Chemistry
• ISSN: 2161-5063
• Language: English