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Cohesin loading factor Nipbl localizes to chromosome axes during mammalian meiotic prophase

机译:粘着蛋白加载因子Nipbl在哺乳动物减数分裂前期定位于染色体轴

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Background Sister chromatid cohesion mediated by the cohesin complex is essential for accurate chromosome segregation during mitosis and meiosis. Loading of cohesin onto chromosomes is dependent on another protein complex called kollerin, containing Nipbl/Scc2 and Mau2/Scc4. Nipbl is an evolutionarily conserved large protein whose haploinsufficiency in humans causes a developmental disorder called Cornelia de Lange syndrome. Although the function of Nipbl homologues for chromosome cohesion in meiotic cells of non-vertebrate models has been elucidated, Nipbl has not been characterized so far in mammalian spermatocytes or oocytes.
机译:背景技术由粘着蛋白复合物介导的姐妹染色单体凝聚对于在有丝分裂和减数分裂过程中准确的染色体分离至关重要。将粘着蛋白加载到染色体上取决于另一种蛋白质复合物,称为kollerin,其中含有Nipbl / Scc2和Mau2 / Scc4。 Nipbl是一种进化保守的大蛋白,其在人类中的单倍剂量不足会导致称为Cornelia de Lange综合征的发育障碍。尽管已经阐明了非脊椎动物模型的减数分裂细胞中Nipbl同源物对染色体凝聚的功能,但到目前为止,Nipbl尚未在哺乳动物的精母细胞或卵母细胞中得到表征。

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