The authors have withdrawn this manuscript after detecting issues with two of the figures in the manuscript. Therefore, the authors do not wish this work to be cited as a reference. If you have any questions, please contact the corresponding authors.

中文翻译：

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Condensin 以 15nm 的步长压缩 DNA，需要 FACT 来挤出染色质

作者在发现手稿中的两个数字存在问题后撤回了该手稿。因此，作者不希望这项工作被引用作为参考。如有任何疑问，请联系相应作者。