Diverse mechanisms of centromere specification.

Diverse mechanisms of centromere specification.
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DOI:
10.1016/j.cub.2021.09.083
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发表时间:
2021-11-22
期刊:
Current biology : CB
影响因子:
--
通讯作者:
Fachinetti D
Fachinetti D
中科院分区:
其他
文献类型:
--
作者:
Mellone BG;Fachinetti D

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着丝粒执行普遍保守的功能,在细胞分裂时精确地分配遗传信息。然而,着丝粒是基因组中进化最快的区域之一,并且被不同的着丝粒结合因子结合,这些因子本身在蛋白质序列水平上高度不同。大多数物种的一个共同点是依赖于着丝粒特异性组蛋白变体CENP-A来指定着丝粒位点。然而,CENP-A并不是所有物种或细胞类型都普遍需要的,这使得确定着丝粒特异性的一般机制具有挑战性。在这篇综述中,我们研究了我们目前的理解着丝粒规格的机制CENP-A依赖和独立的系统,主要集中在最近的工作。在这篇综述中,Mellone和Fachinetti强调了不同的机制,控制着丝粒规范在CENP-A依赖和独立的系统,重点是最近的工作。他们讨论了不同成分的可能作用,从着丝粒DNA到其相关因子(包括转录本),集中在多细胞物种的着丝粒身份。
The centromere performs a universally conserved function, to accurately partition genetic information upon cell division. Yet, centromeres are among the most rapidly evolving regions of the genome and are bound by varying assortments of centromere-binding factors that are themselves highly divergent at the protein sequence level. A common thread in most species is the dependence on the centromere-specific histone variant CENP-A for the specification of the centromere site. However, CENP-A is not universally required in all species or cell types, making the identification of a general mechanism for centromere specification challenging. In this review, we examine our current understanding of the mechanisms of centromere specification in CENP-A-dependent and independent systems, focusing primarily on recent work. In this review, Mellone and Fachinetti highlight diverse mechanisms that control centromere specification in CENP-A-dependent and -independent systems, with emphasis on recent work. They discuss the possible roles of different components, from centromeric DNA to its associated factors (including transcripts), in centromere identity focusing on multicellular species.
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