Force–velocity relationships in kinesin-driven motility
Force–velocity relationships in kinesin-driven motility
复制标题
驱动蛋白驱动运动中的力-速度关系
作者:
K. Hall;D. Cole;Y. Yeh;J. Scholey;R. Baskin
KINESIN is a microtubule-based motor protein that uses energy released from Mg–ATP hydrolysis to generate force for the movement of intracellular membranes towards the fast-growing (plus) ends of microtubule tracks in cells1. Kinesin-driven microtubule movement can be visualized and quantified using light microscope motility assays2–5 but our understanding of how kinesin generates force and motion is incomplete6. Here we report the use of a centrifuge microscope7,8 to obtain force–velocity curves for kinesin-driven motility and to estimate that the maximal isometric force generated per kinesin is 0.12 ± 0.03 pN per molecule.
DOI:
10.1126/science.2142332
发表时间:
1990
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Yang,JT;Saxton,WM;Stewart,RJ;Raff,EC;Goldstein,LS
通讯作者:
Goldstein,LS