Proximity Induced Splicing Utilizing Caged Split Inteins

Josef A. Gramespacher, Antony J. Burton, Luis F. Guerra, Tom W. Muir

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


Naturally split inteins drive the ligation of separately expressed polypeptides through a process called protein trans splicing (PTS). The ability to control PTS, so-called conditional protein splicing (CPS), has led to the development of tools to modulate protein structure and function at the post-translational level. CPS applications that utilize proximity as a trigger are especially intriguing as they afford the possibility to activate proteins in both a temporal and spatially targeted manner. In this study, we present the first proximity triggered CPS method that utilizes a naturally split fast splicing intein, Npu. We show that this method is amenable to diverse proximity triggers and capable of reconstituting and locally activating the acetyltransferase p300 in mammalian cells. This technology opens up a range of possibilities for the use of proximity triggered CPS.

Original languageEnglish (US)
Pages (from-to)13708-13712
Number of pages5
JournalJournal of the American Chemical Society
Issue number35
StatePublished - Sep 4 2019

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Biochemistry
  • Catalysis
  • Colloid and Surface Chemistry


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