期刊
NUCLEUS
卷 8, 期 2, 页码 144-149出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/19491034.2016.1276144
关键词
Aurora B; chromatin condensation; epigenetics; Haspin; histone reader; histone; mitosis; phoshpo; methyl switch
类别
资金
- Spanish Ministry of Economics and Competitiveness [SAF2013-42289-R]
- FPI [BES-2014-068580]
- NIH [GM101664, GM106416, GM100907]
Mitosis in metazoans is characterized by abundant phosphorylation of histone H3 and involves the recruitment of condensin complexes to chromatin. The relationship between the 2 phenomena and their respective contributions to chromosome condensation in vivo remain poorly understood. Recent studies have shown that H3T3 phosphorylation decreases binding of histone readers to methylated H3K4 in vitro and is essential to displace the corresponding proteins from mitotic chromatin in vivo. Together with previous observations, these data provide further evidence for a role of mitotic histone H3 phosphorylation in blocking transcriptional programs or preserving the memory' PTMs. Mitotic protein exclusion can also have a role in depopulating the chromatin template for subsequent condensin loading. H3 phosphorylation thus serves as an integral step in the condensation of chromosome arms.
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