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PMID |
Sentence |
1 |
1990277
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Changes in the structure of this active chromatin dependent on the presence of exogeneous Mg2+ ATP or on the addition of a mixture of histones H2A and H2B are shown to lead to the selective repression of Xenopus 5S RNA genes.
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2 |
9372946
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Histone octamers consisting of H2A, H2B, H3, and H4 are reconstituted onto DNA duplexes containing an artificial nucleosome-positioning sequence consisting of a tandem array of an alternating AT-GC sequence motif.
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3 |
17575053
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We report here that H3.3 nucleosomes isolated from vertebrates, regardless of whether they are partnered with H2A or H2A.Z, are unusually sensitive to salt-dependent disruption, losing H2A/H2B or H2A.Z/H2B dimers.
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4 |
19164757
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Like bortezomib, EerI-induced cytotoxicity requires the up-regulation of the Bcl-2 homology3 (BH3)-only pro-apoptotic protein NOXA.
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5 |
19164757
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First, these agents elicit an integrated stress response program at the ER to activate the CREB/ATF transcription factors ATF3 and ATF4.
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6 |
19164757
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We show that ATF3 and ATF4 form a complex capable of binding to the NOXA promoter, which is required for NOXA activation.
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7 |
19164757
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Second, EerI and bortezomib also block ubiquitination of histone H2A to relieve its inhibition on NOXA transcription.
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8 |
20372103
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An early response to the induction of DSBs is phosphorylation of the H2A histone variant, H2AX, at the serine-139 residue, in the highly conserved C-terminal SQEY motif, forming gammaH2AX(1).
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9 |
20372103
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Following induction of DSBs, H2AX is rapidly phosphorylated by the phosphatidyl-inosito 3-kinase (PIKK) family of proteins, ataxia telangiectasia mutated (ATM), DNA-protein kinase catalytic subunit and ATM and RAD3-related (ATR)(2).
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10 |
20372103
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Phosphorylation of H2AX mediated predominantly by ATM spreads to adjacent areas of chromatin, affecting approximately 0.03% of total cellular H2AX per DSB(2,3).
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11 |
20613712
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Phosphorylation of the H2A histone variant, H2AX, at the serine-139 residue, in the highly conserved C-terminal SQEY motif, forming gammaH2AX, is an early response to DNA double-strand breaks.
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12 |
20613712
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This phosphorylation event is mediated by the phosphatidyl-inosito 3-kinase (PI3K) family of proteins, ataxia telangiectasia mutated (ATM), DNA-protein kinase catalytic subunit and ATM and RAD3-related (ATR).
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13 |
21249133
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Three of the found H2A potentially organize small nucleosomes in transcriptionally active chromatin, while two H2AFY variants inactivate X chromosome in female cells.
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14 |
21249133
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H2AFX and H2AFY revealed differential and variable N-terminal processing.
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15 |
22371497
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A recent study also found that all four core nucleosomal histones (H2A, H2B, H3, and H4) are modified with O-GlcNAc, although no specific sites on H3 were reported.
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16 |
23738337
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Impact of high glucose and proteasome inhibitor MG132 on histone H2A and H2B ubiquitination in rat glomerular mesangial cells.
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