Integrated control of axonemal dynein AAA(+) motors.

Integrated control of axonemal dynein AAA(+) motors.
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DOI:
10.1016/j.jsb.2012.02.013
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发表时间:
2012-08
影响因子:
3
通讯作者:
King, Stephen M.
King, Stephen M.
中科院分区:
生物学3区
文献类型:
--
作者:
King, Stephen M.

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轴丝动力蛋白是 AAA+ 酶,可将 ATP 水解转化为机械功。这导致双联微管相对于彼此滑动,并最终产生纤毛/鞭毛跳动。然而,为了产生有用的功,必须精确控制各个动力蛋白电机的动作。此外,细胞通过各种第二信使系统调节这些细胞器的运动性,这些信号也必须由动力蛋白马达整合才能产生适当的输出。这篇综述描述了了解动力蛋白控制机制及其连接性的努力的现状,主要集中于单细胞双鞭毛绿藻衣藻轴丝外动力蛋白臂的研究。
Axonemal dyneins are AAA+ enzymes that convert ATP hydrolysis to mechanical work. This leads to the sliding of doublet microtubules with respect to each other and ultimately the generation of ciliary/flagellar beating. However, in order for useful work to be generated, the action of individual dynein motors must be precisely controlled. In addition, cells modulate the motility of these organelles through a variety of second messenger systems and these signals too must be integrated by the dynein motors to yield an appropriate output. This review describes the current status of efforts to understand dynein control mechanisms and their connectivity focusing mainly on studies of the outer dynein arm from axonemes of the unicellular biflagellate green alga Chlamydomonas.
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