Abstract Actin, the major component of the dynamic microfilament cytoskeleton system, exists in nearly all eukaryotic cells and plays essential roles in cellular activities.

• 摘要 肌动蛋白在真核生物中广泛存在, 由肌动蛋白参与形成的动态微丝骨架系统是细胞生命活动的基础。