Dyskerin, tRNA genes, and condensin tether pericentric chromatin to the spindle axis in mitosis.
Dyskerin, tRNA genes, and condensin tether pericentric chromatin to the spindle axis in mitosis.
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DOI:
10.1083/jcb.201405028
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发表时间:
2014-10-27
期刊:
影响因子:
--
通讯作者:
Bloom K
中科院分区:
文献类型:
--
作者:
Snider CE;Stephens AD;Kirkland JG;Hamdani O;Kamakaka RT;Bloom K
Pericentric enrichment of condensin on budding yeast chromosomes, which contributes to chromatin compaction and mitotic spindle structure and integrity, is mediated by condensin interaction with tRNA genes and the tRNA-interacting protein dyskerin. Condensin is enriched in the pericentromere of budding yeast chromosomes where it is constrained to the spindle axis in metaphase. Pericentric condensin contributes to chromatin compaction, resistance to microtubule-based spindle forces, and spindle length and variance regulation. Condensin is clustered along the spindle axis in a heterogeneous fashion. We demonstrate that pericentric enrichment of condensin is mediated by interactions with transfer ribonucleic acid (tRNA) genes and their regulatory factors. This recruitment is important for generating axial tension on the pericentromere and coordinating movement between pericentromeres from different chromosomes. The interaction between condensin and tRNA genes in the pericentromere reveals a feature of yeast centromeres that has profound implications for the function and evolution of mitotic segregation mechanisms.
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影响因子:
11.8
作者:
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DOI:
10.1073/pnas.88.4.1306
发表时间:
1991-02-01
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作者:
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