Post-translational enzyme activation in an animal via optimized conditional protein splicing

Edmund C. Schwartz, Lino Saez, Michael W. Young, Tom W. Muir

Research output: Contribution to journalArticlepeer-review

70 Scopus citations


Control over the timing, location and level of protein activity in vivo is crucial to understanding biological function. Living systems are able to respond to external and internal stimuli rapidly and in a graded fashion by maintaining a pool of proteins whose activities are altered through post-translational modifications. Here we show that the process of protein trans-splicing can be used to modulate enzymatic activity both in cultured cells and in Drosophila melanogaster. We used an optimized conditional protein splicing system to rapidly trigger the in vivo ligation of two inactive fragments of firefly luciferase in a tunable manner. This technique provides a means of controlling enzymatic function with greater speed and precision than with standard genetic techniques and is a useful tool for probing biological processes.

Original languageEnglish (US)
Pages (from-to)50-54
Number of pages5
JournalNature Chemical Biology
Issue number1
StatePublished - Jan 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Cell Biology


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