Functions of plant-specific myosin XI: from intracellular motility to plant postures.
Functions of plant-specific myosin XI: from intracellular motility to plant postures.
复制标题
DOI：
10.1016/j.pbi.2015.08.006
复制
发表时间：
2015-12
影响因子：
9.5
通讯作者：
H. Ueda;K. Tamura;I. Hara-Nishimura
中科院分区：
文献类型：
--
作者：
H. Ueda;K. Tamura;I. Hara-Nishimura
肌球蛋白XI家族具有从细胞内运动到器官运动的作用。和XI 2通过组织肌动蛋白束驱动内质网流动。肌球蛋白XIK是营养器官中细胞质流动的主要贡献者。肌球蛋白XI-i是核质连接物，调节核的形状和运动。肌球蛋白XIF和XIK调节器官伸直以决定植物姿态。植物-已知特异性蛋白质马达类肌球蛋白XI在细胞质的快速整体流动（细胞质流动）和细胞器运动中起作用。最近的研究揭示了肌球蛋白XI马达的广泛生理功能，从细胞内运动到器官运动。拟南芥（Arabidopsis thaliana）肌球蛋白XI类有13个成员。在营养器官中，肌球蛋白XIk、XI 1和XI 2主要对内质网的动力学和空间构型做出贡献，内质网在细胞外围形成管状网络，在细胞内部区域形成粗链样结构。肌球蛋白XI-i形成核质接头，并负责核运动和形状。除了这些细胞内的功能，肌球蛋白XIF与肌球蛋白XIK一起参与植物的基本性质;肌动蛋白-肌球蛋白XI细胞骨架调节器官拉直以调整植物姿态。
HighlightsMyosin XI family has roles from intracellular motility to organ movements.Myosins XIk, XI1, and XI2 drive ER streaming by organizing actin bundles.Myosin XIk is a primary contributor to cytoplasmic streaming in vegetative organs.Myosin XI-i is a nucleocytoplasmic linker that regulates nuclear shape and movement.Myosins XIf and XIk regulate organ straightening to determine plant postures.The plant-specific protein motor class myosin XI is known to function in rapid bulk flow of the cytoplasm (cytoplasmic streaming) and in organellar movements. Recent studies unveiled a wide range of physiological functions of myosin XI motors, from intracellular motility to organ movements. Arabidopsis thaliana has 13 members of myosin XI class. In vegetative organs, myosins XIk, XI1, and XI2 primarily contribute to dynamics and spatial configurations of endoplasmic reticulum that develops a tubular network in the cell periphery and thick strand-like structures in the inner cell regions. Myosin XI-i forms a nucleocytoplasmic linker and is responsible for nuclear movement and shape. In addition to these intracellular functions, myosin XIf together with myosin XIk is involved in the fundamental nature of plants; the actin–myosin XI cytoskeleton regulates organ straightening to adjust plant posture.