The Dictyostelium type V myosin MyoJ is responsible for the cortical association and motility of contractile vacuole membranes.

The Dictyostelium type V myosin MyoJ is responsible for the cortical association and motility of contractile vacuole membranes.
复制标题

DOI:
10.1083/jcb.200810147
复制
发表时间:
2009-08-24
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Hammer JA 3rd
Hammer JA 3rd
中科院分区:
其他
文献类型:
--
作者:
Jung G;Titus MA;Hammer JA 3rd

文献摘要

参考文献

被引文献

相似文献

网骨藻的收缩泡复合体是一种管泡状的细胞器,它沿富含肌动蛋白的皮层沿着具有广泛的运动性,为研究肌球蛋白依赖的膜转运提供了一个有用的模型。在这里,我们表明,V型肌球蛋白myoJ定位于CV膜,并需要有效的神经调节,CV膜在皮质中的正常积累,并将塌陷的膀胱膜转化为向外辐射的皮质CV小管。myoJ空细胞与含有较短杠杆臂的myoJ版本的互补导致这些辐射小管以较慢的速度移动,证实了myoJ在沿着皮质易位CV膜中的作用。MyoJ-null细胞也表现出显着浓度的CV膜周围的微管组织中心。一致的,我们表明,CV膜也双向移动之间的皮层和中心体的微管。因此,myoJ与正负端定向微管马达合作,以驱动网骨藻中CV复合物的正常分布和动力学。
The contractile vacuole (CV) complex in Dictyostelium is a tubulovesicular osmoregulatory organelle that exhibits extensive motility along the actin-rich cortex, providing a useful model for investigating myosin-dependent membrane transport. Here, we show that the type V myosin myoJ localizes to CV membranes and is required for efficient osmoregulation, the normal accumulation of CV membranes in the cortex, and the conversion of collapsed bladder membranes into outwardly radiating cortical CV tubules. Complementation of myoJ-null cells with a version of myoJ containing a shorter lever arm causes these radiating tubules to move at a slower speed, confirming myoJ's role in translocating CV membranes along the cortex. MyoJ-null cells also exhibit a dramatic concentration of CV membranes around the microtubule-organizing center. Consistently, we demonstrate that CV membranes also move bi-directionally on microtubules between the cortex and the centrosome. Therefore, myoJ cooperates with plus and minus end–directed microtubule motors to drive the normal distribution and dynamics of the CV complex in Dictyostelium.
DOI: 10.1083/jcb.133.2.305
发表时间: 1996-04
期刊: The Journal of cell biology
影响因子: --
作者:
Jung G;Wu X;Hammer JA 3rd
通讯作者: Hammer JA 3rd
DOI: 10.1016/j.tcb.2009.03.003
发表时间: 2009-06
影响因子: 19
作者:
Woolner S;Bement WM
通讯作者: Bement WM
DOI: 10.1083/jcb.121.6.1311
发表时间: 1993-06
期刊: The Journal of cell biology
影响因子: --
作者:
Heuser J;Zhu Q;Clarke M
通讯作者: Clarke M
DOI: 10.1074/jbc.m802957200
发表时间: 2008-10-03
影响因子: 4.8
作者:
Taft, Manuel H.;Hartmann, Falk K.;Tsiavaliaris, Georgios
通讯作者: Tsiavaliaris, Georgios
DOI: 10.1083/jcb.200110086
发表时间: 2002-01-07
期刊: The Journal of cell biology
影响因子: --
作者:
Schott DH;Collins RN;Bretscher A
通讯作者: Bretscher A