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Genetically Encoding Propiolamide Warhead for the Construction of Phage Displayed Cyclic Peptide Library
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DOI：10.1002/cbic.70401.png)
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Abstract
En 中文
Phage display is foundational to cyclic peptide-based ligand discovery, and recently genetically encoded electrophilic noncanonical amino acids (ncAAs) have proven useful in constructing phage-displayed cyclic peptide libraries via proximity-induced crosslinking. However, electrophilic ncAAs exploited for this purpose remain quite rare, thus impeding the broad application of this emerging technology. Herein, we design and genetically encode propiolamide-bearing ncAAs into proteins and demonstrate the capability of propiolamide warhead in conjugating to proximal Cys via a stable and rigid vinyl sulfide connectivity. Importantly, the encoded propiolamide warhead could be facilely displayed on phage surface and support large recombinant library construction. Via biopanning, cyclic peptide-based inhibitor targeting SARS-CoV-2 main protease was discovered.
Keywords:
cyclic peptide
genetic code expansion
phage display
propiolamide
SARS-CoV-2
Journal
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2.8
Papers:
854
Citations:
1.5W
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Cited Papers