Histone H4 Lysine 91 Acetylation

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Acetylation of histone H4 lysine 5 and 12 is required for CENP-A deposition into centromeres

Centromeres are specified epigenetically through the deposition of the centromere-specific histone H3 variant CENP-A. However, how additional epigenetic features are involved in centromere specification is unknown. Here, we find that histone H4 Lys5 and Lys12 acetylation (H4K5ac and H4K12ac) primarily occur within the pre-nucleosomal CENP-A-H4-HJURP (CENP-A chaperone) complex, before centromere...

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Structure and binding of the H4 histone tail and the effects of lysine 16 acetylation.

The H4 histone tail plays a critical role in chromatin folding and regulation--it mediates strong interactions with the acidic patch of proximal nucleosomes and its acetylation at lysine 16 (K16) leads to partial unfolding of chromatin. The molecular mechanism associated with the H4 tail/acidic patch interactions and its modulation via K16 acetylation remains unknown. Here we employ a combinati...

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TPX2 Impacts Acetylation of Histone H4 at Lysine 16: Implications for DNA Damage Response

During interphase, the spindle assembly factor TPX2 is compartmentalized in the nucleus where its roles remain largely uncharacterized. Recently, we found that TPX2 regulates the levels of serine 139-phosphoryated H2AX (γ-H2AX) at chromosomal breaks induced by ionizing radiation. Here, we report that TPX2 readily associates with the chromatin in the absence of ionizing radiation. Overexpression...

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Histone H4 lysine 20 acetylation is associated with gene repression in human cells.

Histone acetylation is generally associated with gene activation and chromatin decondensation. Recent mass spectrometry analysis has revealed that histone H4 lysine 20, a major methylation site, can also be acetylated. To understand the function of H4 lysine 20 acetylation (H4K20ac), we have developed a specific monoclonal antibody and performed ChIP-seq analysis using HeLa-S3 cells. H4K20ac wa...

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ژورنال

عنوان ژورنال: Molecular Cell

سال: 2005

ISSN: 1097-2765

DOI: 10.1016/j.molcel.2005.02.031