A large portion of the cytoskeleton consists of threadlike microfilaments composed mainly of the contractile actin.

细胞骨架大部分由微丝组成,微丝主要由可收缩的肌动蛋白组成.

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The process occurs as myosin proteins attached to organelles push against microfilaments arrayed throughout the cell.

这个过程是由于依附在细胞器上的肌球蛋白反推排列在细胞周围的微丝形成的.

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