Histone H4K4 Acetylation in Trypanosoma brucei
Author Information
Author(s): Siegel T Nicolai, Kawahara Taemi, DeGrasse Jeffrey A, Janzen Christian J, Horn David, Cross George A M
Primary Institution: The Rockefeller University
Hypothesis
The study investigates the regulation of histone H4K4 acetylation during the cell cycle in Trypanosoma brucei.
Conclusion
HAT3 is responsible for the acetylation of H4K4, which is strongly enriched in S phase cells.
Supporting Evidence
- H4K4 is the most abundant acetylation site in T. brucei histones.
- Immunofluorescence microscopy revealed a strong enrichment of unmodified H4K4 in S phase.
- HAT3 is located inside the nucleus and is responsible for H4K4 acetylation.
Takeaway
This study found that a specific protein called HAT3 helps add a chemical tag to a part of a protein called histone H4, which is important for how cells grow and divide.
Methodology
The study used immunofluorescence microscopy and Western blot analysis to characterize histone modifications.
Limitations
The study does not explore the potential effects of other histone modifications on H4K4 acetylation.
Digital Object Identifier (DOI)
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