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Chromosome 'by-Aurora-ientation' during mitosis.

机译:有丝分裂过程中的染色体“按极光定向”。

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New evidence from three separate laboratories, published recently in Science, has shown that centromere positioning of the CPC (chromosomal passenger complex) during early mitosis is achieved through direct interaction between the CPP (chromosomal passenger protein) survivin and histone H3. In essence, an acidic pocket in the BIR (baculovirus inhibitor of apoptosis repeat) domain of survivin binds to the NH2 tail of histone H3 specifically when it is phosphorylated at threonine 3, a mark that is placed by the mitotic kinase, haspin. These data are significant, as they describe a fundamental mechanism, conserved throughout eukaryotes, which is essential for chromosome biorientation and the maintenance of genome stability during mitosis.
机译:最近在《科学》杂志上发表的三个独立实验室的新证据表明,早期有丝分裂期间CPC(染色体乘客复合体)的着丝粒定位是通过CPP(染色体乘客蛋白)survivin与组蛋白H3之间的直接相互作用实现的。本质上,survivin的BIR(杆状病毒凋亡重复抑制剂)结构域中的酸性口袋与组蛋白H3的NH2尾巴结合,特别是当它在苏氨酸3上磷酸化时,该标记被有丝分裂激酶haspin标记。这些数据非常重要,因为它们描述了在整个真核生物中都保守的基本机制,这对于染色体生物定向和有丝分裂期间基因组稳定性的维持至关重要。

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