Trafficking of cGMP-dependent protein kinase II via interaction with Rab11.

Trafficking of cGMP-dependent protein kinase II via interaction with Rab11.
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通过与 Rab11 相互作用运输 cGMP 依赖性蛋白激酶 II。

DOI:
10.1016/j.bbrc.2008.07.071
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发表时间:
2008
影响因子:
3.1
通讯作者:
A. Tsuji
A. Tsuji
中科院分区:
生物学4区
文献类型:
--
作者:
K. Yuasa;Shin Yamagami;M. Nagahama;A. Tsuji

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cGMP依赖性蛋白激酶II(cGK-II)参与多种生理功能,包括肠分泌、骨生长、学习和记忆,但具体机制尚不清楚。为了鉴定参与cGMP/CGK-II信号传导的蛋白质,我们进行了酵母双杂交筛选,并将Rab 11b鉴定为调节慢循环途径的CGK-II相互作用蛋白。有趣的是,在哺乳动物细胞中,cGK-II与Rab 11b的GDP结合形式(Rab 11b S25 N)相互作用,而不是GTP结合形式。免疫荧光染色显示Rab 11b S25 N能促进cGK-Ⅱ从质膜向胞浆的转位,且cGK-Ⅱ的定位与Rab 11b广泛重叠。此外,用膜渗透性cGMP类似物处理引起CGK-II和Rab 11b S25 N快速重新易位到膜。这些数据表明Rab 11b对于cGK-II的运输是必需的,并且cGMP/cGK-II信号通路与Rab 11b再循环通路密切相关。
cGMP-dependent protein kinase II (cGK-II) is implicated in several physiological functions including intestinal secretion, bone growth, and learning and memory, but the detailed mechanisms are still unclear. To identify proteins that are involved in cGMP/cGK-II signaling, we performed yeast two-hybrid screening and identified Rab11b as a cGK-II-interacting protein that regulates the slow-recycling pathway. Interestingly, cGK-II interacted with the GDP-bound form of Rab11b (Rab11b S25N), but not the GTP-bound form, in mammalian cells. Immunofluorescence staining revealed that Rab11b S25N promoted the translocation of cGK-II from the plasma membrane to the cytoplasm and that the localization of cGK-II extensively overlapped with Rab11b. Furthermore, treatment with a membrane-permeable cGMP analog caused the rapid retranslocation of cGK-II and Rab11b S25N to the membrane. These data indicate that Rab11b is necessary for the trafficking of cGK-II and that the cGMP/cGK-II signaling pathway is closely related to Rab11b recycling pathway.
DOI: 10.1016/j.jmb.2006.08.064
发表时间: 2006-11-24
影响因子: 5.6
作者:
Eathiraj, Sudharshan;Mishra, Ashwini;Lambright, David G.
通讯作者: Lambright, David G.
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发表时间: 2000-11-01
影响因子: 15.9
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DOI: 10.1210/me.2006-0523
发表时间: 2007
期刊: Molecular endocrinology (Baltimore, Md.)
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DOI: 10.1042/bj3420353
发表时间: 1999-09
期刊: The Biochemical journal
影响因子: --
作者:
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通讯作者: Michael L. Fitzgerald;Guy L. Reed
DOI: 10.1016/s1097-2765(01)00189-7
发表时间: 2001-02-01
期刊: MOLECULAR CELL
影响因子: 16
作者:
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通讯作者: Gruenberg, J