Topoisomerase II mediates meiotic crossover interference.

Topoisomerase II mediates meiotic crossover interference.
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DOI:
10.1038/nature13442
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发表时间:
2014-07-31
期刊:
影响因子:
64.8
通讯作者:
Kleckner, Nancy
Kleckner, Nancy
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Zhang, Liangran;Wang, Shunxin;Yin, Shen;Hong, Soogil;Kim, Keun P.;Kleckner, Nancy

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空间模式是生物系统的普遍特征。减数分裂交换提供了一个有趣的例子,由经典的交换干扰现象定义。在这里,芽殖酵母中的交叉模式分析确定了干扰的分子途径。拓扑异构酶II(Topo II)起着核心作用,从而确定了这个关键分子的新功能。还需要SUMO化[TopoII和轴组分Red 1]和泛素介导的SUMO化蛋白的去除。这些和其他研究结果支持的假设,交叉干扰涉及积累,缓解和机械应力沿着减数分裂染色体轴的蛋白质/DNA网络的重新分布,与TopoII需要调整DNA片段之间的空间关系。
Spatial patterning is a ubiquitous feature of biological systems. Meiotic crossovers provide an interesting example, defined by the classical phenomenon of crossover interference. Here, analysis of crossover patterns in budding yeast identifies a molecular pathway for interference. Topoisomerase II (Topo II) plays a central role, thus identifying a new function for this critical molecule. SUMOylation [of TopoII and axis component Red1] and ubiquitin-mediated removal of SUMOylated proteins are also required. These and other findings support the hypothesis that crossover interference involves accumulation, relief and redistribution of mechanical stress along the protein/DNA meshwork of meiotic chromosome axes, with TopoII required to adjust spatial relationships among DNA segments.
DOI: 10.1007/bf02982376
发表时间: 1938-05-01
影响因子: 1.5
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