Condensin and cohesin complexity: the expanding repertoire of functions.

Condensin and cohesin complexity: the expanding repertoire of functions.
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DOI:
10.1038/nrg2794
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发表时间:
2010-06
期刊:
Nature reviews. Genetics
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其他
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凝聚素和凝聚素复合物除了在染色体紧密化和姐妹染色单体凝聚中的作用外,还在不同的核过程中起作用。最近的工作阐明了凝聚素和粘着素在间期基因组组织、基因表达控制、后生动物发育和减数分裂中的作用。尽管这些广泛的功能,几个主题已经浮出水面:这两个复合物通过抑制或促进远距离基因组区域之间的相互作用建立高阶染色体结构,这两个复合物影响其他蛋白质的染色体缔合,这两个复合物通过交换同源亚基实现功能特化。新出现的数据正在扩大已知凝聚素和粘着素参与的过程的范围,并正在增强我们对染色体结构如何调节以影响众多细胞功能的知识。
Condensin and cohesin complexes act in diverse nuclear processes in addition to their widely known roles in chromosome compaction and sister chromatid cohesion. Recent work has elucidated the contribution of condensin and cohesin to interphase genome organization, control of gene expression, metazoan development and meiosis. Despite these wide-ranging functions, several themes have come to light: both complexes establish higher-order chromosome structure by inhibiting or promoting interactions between distant genomic regions, both complexes influence the chromosomal association of other proteins, and both complexes achieve functional specialization by swapping homologous subunits. Emerging data are expanding the range of processes in which condensin and cohesin are known to participate and are enhancing our knowledge of how chromosome architecture is regulated to influence numerous cellular functions.
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