The Role of the C-Terminal Domain in Human Topoisomerase II Activity
Author Information
Author(s): Emma L. Meczes, Kathryn L. Gilroy, Katherine L. West, Caroline A. Austin
Primary Institution: Institute for Cell and Molecular Biosciences, The University of Newcastle upon Tyne
Hypothesis
The C-terminal domain of human topoisomerase II isoforms affects their activity and regulation.
Conclusion
The C-terminal domain is necessary for the in vivo function of topoisomerase IIα, while topoisomerase IIβ can function at low levels without it.
Supporting Evidence
- The C-terminal domain of topoisomerase IIα is essential for growth in yeast.
- Topoisomerase IIβ can support low levels of growth without its C-terminal domain.
- C-terminally truncated enzymes showed similar activity to full-length enzymes in vitro.
Takeaway
This study shows that a part of the topoisomerase II protein helps it work properly in cells, but one type of this protein can still do some work even without that part.
Methodology
The study involved creating and testing various forms of topoisomerase II proteins in yeast and in vitro activity assays.
Limitations
The study primarily focused on yeast models, which may not fully represent human cellular conditions.
Statistical Information
P-Value
0.0008
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website