植物肌球蛋白在细胞内部运动中的功能研究进展

Eukaryotic cells exhibit intracellular motility involving organelle trafficking and continuous cytoplasmic streaming. Organelle movement, positioning, and communications are critical for maintaining cellular functions. Most plants have developed a unique actin-myosin system for intracellular trafficking. Myosins are motor proteins regulating intracellular movements. Directional movements of myosin-associated organelles via association with motor proteins along the cytoskeleton form organelle movement. This movement entrain cytoplasmic streaming. Intracellular motility involves actinfilament bundles, organelles and plant unique motor proteins. Here we summarize functions of myosins on intracellular motility.