The team found some were vital for DNA packaging, chromosome segregation and fertility.

研究小组发现了一些对DNA包装，染色体分离和富集至关重要的蛋白。

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Until now, researchers did not know how T4, or any other virus, accomplished the DNA packaging.

直到现在，研究人员也清楚T4或者其他的病毒是如何完成DNA包装的。

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In normal cells, the BRCA1 protein keeps these regions silent by tagging histones, or DNA packaging proteins, with a molecule called ubiquitin.

在正常细胞中，通过组蛋白标记或DNA包装蛋白，在泛素分子的作用下，BRCA1蛋白使这些区域保持沉默。

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"The beauty of this system is that we do not need to modify the item being protected in any way with tags, chips or ink - it is as if documents and packaging had their own unique DNA, " said Professor Cowburn.

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