Abstract
Cyclic peptides are an emerging class of therapeutics that can modulate targets not amenable to traditional small molecule intervention (e.g., protein–protein interactions). However, N-to-C macrocyclization of peptides is a challenging and often a low yielding chemical transformation. Several macrocyclases from cyanobactin biosynthetic clusters have been used to catalyze this reaction.
This chapter provides practical guidance to the processes of heterologous expression and purification of these enzymes as well as performing in vitro biochemical reactions. Finally, approaches to recover the final product from an enzymatic reaction mixture are also discussed.
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I dedicate this chapter to the memory of my colleagues Dr. Andrew Bent (University of St Andrews, UK) and Dr. Mostafa Abdelrahman (University of Aberdeen, UK & Al-Azhar University, Egypt) who died from cancer.
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Houssen, W.E. (2019). Peptide Cyclization Catalyzed by Cyanobactin Macrocyclases. In: Nuijens, T., Schmidt, M. (eds) Enzyme-Mediated Ligation Methods. Methods in Molecular Biology, vol 2012. Humana, New York, NY. https://doi.org/10.1007/978-1-4939-9546-2_11
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DOI: https://doi.org/10.1007/978-1-4939-9546-2_11
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