Question

Charles David Allis discovered that this modification is performed by p55 in Tetrahymena. The reverse of this modification is suppressed by Trichostatin A and sodium butyrate in vivo. The yeast subunit Esa1 is part of the NuA4 enzyme, which performs this modification; that subunit is homologous to the human Tip60, which is part of the MYST family of enzymes that perform this modification. The SAGA complex includes a GCN5 subunit that performs this modification. An all-alpha fold is adopted by a (*) 110-amino acid domain that recognizes this modification called bromodomains. (10[1]-5[2])HDACs reverse this modification that occurs at lysine residues on H3 and H4. Unlike methylation, (10[1])this modification (10[1])increases transcriptional activity in chromatin. For 10 points, HATs perform what post-translational modification of histones that add a COCH3 group? ■END■ (10[1])

ANSWER: histone acetylation [or ethanoylation; or word forms like adding an acetyl group; reject “deacetylation”] (Charles Allis’ discovery of p55 was the first time histone acetyltransferases were connected to DNA transcription activation.)
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Raymond ChenShe Dicer On My Argonaute Till I RNA Interfereas rational as the square root of two power bottoms8910
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Kane NguyenI'd prefer to have the team name be Christensen et al. than anything that Erik cooks up The Only Existing Manuscript from A Clockwork Orange89-5
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Adrian WongThe Only Existing Manuscript from A Clockwork OrangeI'd prefer to have the team name be Christensen et al. than anything that Erik cooks up 12710

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2024 ARGOS @ McMaster11/17/2024Y580%0%40%106.50