Analysis of the piggyBac transposase reveals a functional nuclear targeting signal in the 94 c-terminal residues
2008
Understanding the piggyBac transposase and its nuclear targeting signal
publication
Evidence: moderate
Author Information
Author(s): Keith James H, Tresa S Fraser, Malcolm J Fraser Jr
Primary Institution: University of Notre Dame
Hypothesis
Does the piggyBac transposase contain a functional nuclear targeting signal?
Conclusion
The study found that the piggyBac transposase requires a specific nuclear localization signal for entry into the nucleus, along with additional upstream amino acids.
Supporting Evidence
- The piggyBac transposase has a predicted nuclear localization signal that is essential for its nuclear entry.
- Truncation and mutation analyses identified the minimum sequence required for nuclear localization.
- Basic amino acids upstream of the predicted nuclear localization signal are necessary for its function.
Takeaway
The piggyBac transposase needs a special signal to get into the nucleus, and some nearby parts help it do that better.
Methodology
The study involved fusing the piggyBac transposase with a fluorescent protein and observing its localization in Drosophila S2 cells using confocal microscopy.
Digital Object Identifier (DOI)
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