RiPP Enzymes for Biosynthetically Derived Cyclic Peptide Libraries.

Area of Science:

• Biochemistry
• Synthetic Biology
• Medicinal Chemistry

Background:

• Peptide libraries are crucial for drug discovery, but traditional synthesis methods face limitations in diversity, scalability, and functional group tolerance.
• Enzyme-mediated peptide modification is an alternative, yet existing enzymes often exhibit substrate specificity and scalability issues.
• Ribosomally synthesized and post-translationally modified peptides (RiPPs) represent an expanding class of natural products with unique enzymatic machinery.

Purpose of the Study:

• To review the potential of enzymes from RiPP gene clusters as biocatalysts for generating modified peptide libraries.
• To highlight how RiPP enzymes can address limitations in current peptide library production, particularly for cyclization.
• To provide a perspective for synthetic peptide library users on integrating RiPP enzymes into high-throughput workflows.

Main Methods:

• Review of literature on RiPP enzymes and their catalytic activities.
• Analysis of the advantages of RiPP enzymes over traditional methods for peptide modification.
• Discussion of the requirements for utilizing RiPP enzymes in synthetic peptide library generation.

Main Results:

• RiPP enzymes offer a versatile and tunable platform for peptide modification, including cyclization.
• These enzymes demonstrate compatibility with synthetic peptides under mild, in vitro conditions.
• RiPP enzymes can potentially overcome substrate specificity and scalability limitations of other biocatalysts.

Conclusions:

• RiPP enzymes present a promising alternative for the efficient and scalable production of diverse modified peptide libraries.
• Their unique catalytic capabilities can facilitate the generation of novel, nature-inspired peptide scaffolds for drug discovery.
• Further research into the characterization and engineering of RiPP enzymes is key to their broader application in chemical biology.