Beyer JN, Serebrenik YV, Toy K, Najar MA, Raniszewski NR, Shalem O, Burslem GM. Intracellular Protein Editing to Enable Incorporation of Non-Canonical Residues into Endogenous Proteins.
BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.08.602493. [PMID:
39026884 PMCID:
PMC11257474 DOI:
10.1101/2024.07.08.602493]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
The ability to study proteins in a cellular context is crucial to our understanding of biology. Here, we report a new technology for "intracellular protein editing", drawing from intein- mediated protein splicing, genetic code expansion, and endogenous protein tagging. This protein editing approach enables us to rapidly and site specifically install residues and chemical handles into a protein of interest. We demonstrate the power of this protein editing platform to edit cellular proteins, inserting epitope peptides, protein-specific sequences, and non-canonical amino acids (ncAAs). Importantly, we employ an endogenous tagging approach to apply our protein editing technology to endogenous proteins with minimal perturbation. We anticipate that the protein editing technology presented here will be applied to a diverse set of problems, enabling novel experiments in live mammalian cells and therefore provide unique biological insights.
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