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A Histone Mutant Reproduces the Phenotype Caused by Loss of Histone-Modifying Factor Polycomb

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons82503

Pengelly,  Ana Raquel
Müller, Jürg / Chromatin Biology, Max Planck Institute of Biochemistry, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons82505

Copur,  Ömer
Müller, Jürg / Chromatin Biology, Max Planck Institute of Biochemistry, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons78423

Müller,  Jürg
Müller, Jürg / Chromatin Biology, Max Planck Institute of Biochemistry, Max Planck Society;

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Citation

Pengelly, A. R., Copur, Ö., Jaeckle, H., Herzig, A., & Müller, J. (2013). A Histone Mutant Reproduces the Phenotype Caused by Loss of Histone-Modifying Factor Polycomb. SCIENCE, 339(6120), 698-699. doi:10.1126/science.1231382.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000E-E5DE-3
Abstract
Although many metazoan enzymes that add or remove specific modifications on histone proteins are essential transcriptional regulators, the functional significance of posttranslational modifications on histone proteins is not well understood. Here, we show in Drosophila that a point mutation in lysine 27 of histone H3 (H3-K27) fails to repress transcription of genes that are normally repressed by Polycomb repressive complex 2 (PRC2), the methyltransferase that modifies H3-K27. Moreover, differentiated H3-K27 mutant cells show homeotic transformations like those seen in PRC2 mutant cells. Taken together, these analyses demonstrate that H3-K27 is the crucial physiological substrate that PRC2 modifies for Polycomb repression.