Secretory vesicle transport velocity in living cells depends on the myosin-V lever arm length.
Secretory vesicle transport velocity in living cells depends on the myosin-V lever arm length.
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DOI:
10.1083/jcb.200110086
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发表时间:
2002-01-07
期刊:
影响因子:
--
通讯作者:
Bretscher A
中科院分区:
文献类型:
--
作者:
Schott DH;Collins RN;Bretscher A
Myosins are molecular motors that exert force against actin filaments. One widely conserved myosin class, the myosin-Vs, recruits organelles to polarized sites in animal and fungal cells. However, it has been unclear whether myosin-Vs actively transport organelles, and whether the recently challenged lever arm model developed for muscle myosin applies to myosin-Vs. Here we demonstrate in living, intact yeast that secretory vesicles move rapidly toward their site of exocytosis. The maximal speed varies linearly over a wide range of lever arm lengths genetically engineered into the myosin-V heavy chain encoded by the MYO2 gene. Thus, secretory vesicle polarization is achieved through active transport by a myosin-V, and the motor mechanism is consistent with the lever arm model.
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DOI:
10.1083/jcb.142.3.711
发表时间:
1998-08-10
期刊:
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影响因子:
--
作者:
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通讯作者:
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影响因子:
64.5
作者:
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通讯作者:
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通讯作者:
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DOI:
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发表时间:
1999-11-15
期刊:
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影响因子:
--
作者:
通讯作者:
--
DOI:
10.1083/jcb.113.3.539
发表时间:
1991-05
期刊:
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影响因子:
--
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通讯作者:
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