第一，小泛素相关修饰，或相扑，结合其他蛋白质来改变功能或在细胞内移动它们的物理位置。

The first, Small Ubiquitin-related Modifier, or SUMO, attaches to other proteins to modify their function or physically move them within the cell (SUMOylation).

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高金雀花碱可以限制细胞的移动，癌细胞试图通过产生与转移相关的蛋白来弥补高金雀花碱的抑制作用。

When genistein restricted their ability to do so, they tried to compensate by producing more protein involved in migration.

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