An Arabidopsis gene isolated by a novel method for detecting genetic interaction in yeast encodes the GDP dissociation inhibitor of Ara4 GTPase.

An Arabidopsis gene isolated by a novel method for detecting genetic interaction in yeast encodes the GDP dissociation inhibitor of Ara4 GTPase.
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通过一种检测酵母遗传相互作用的新方法分离出的拟南芥基因编码 Ara4 GTP 酶的 GDP 解离抑制剂。

DOI:
10.1105/tpc.8.11.2079
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发表时间:
1996
期刊:
The Plant cell
影响因子:
--
通讯作者:
Akihiko Nakano
Akihiko Nakano
中科院分区:
--
文献类型:
--
作者:
Takashi Ueda;Noriyuki Matsuda;T. Anai;H. Tsukaya;Hirofumi Uchimiya;Akihiko Nakano

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拟南芥Ara蛋白属于小GTP酶的Rab/Ypt家族,其涉及细胞内囊泡运输。为了了解它们在细胞中的具体作用,必须确定调节GT3循环的分子。这些分子已经在动物和酵母中发现并表征,但在植物中没有。利用酵母系统,我们开发了一种新的功能筛选方法来检测外源基因之间的相互作用,并确定了这种Rab调节剂在植物中。我们发现ARA 4基因在酵母ypt突变体中的表达导致突变体表型的夸大。通过将拟南芥cDNA文库引入ypt 1突变体中,我们分离出一个共表达克服了ARA 4的有害影响的克隆。该基因编码Rab GDP解离抑制剂(GDI)的拟南芥同源物,并命名为AtGDI 1。AtGDI 1的表达补充了酵母sec 19 -1(gdi 1)突变。AtGDI 1在拟南芥组织中几乎普遍表达。本文所述的方法表明了两种植物分子Ara 4和GDI在酵母中的生理相互作用,并应适用于其他外源基因。
The Arabidopsis Ara proteins belong to the Rab/Ypt family of small GTPases, which are implicated in intracellular vesicular traffic. To understand their specific roles in the cell, it is imperative to identify molecules that regulate the GTPase cycle. Such molecules have been found and characterized in animals and yeasts but not in plants. Using a yeast system, we developed a novel method of functional screening to detect interactions between foreign genes and identified this Rab regulator in plants. We found that the expression of the ARA4 gene in yeast ypt mutants causes exaggeration of the mutant phenotype. By introducing an Arabidopsis cDNA library into the ypt1 mutant, we isolated a clone whose coexpression overcame the deleterious effect of ARA4. This gene encodes an Arabidopsis homolog of the Rab GDP dissociation inhibitor (GDI) and was named AtGDI1. The expression of AtGDI1 complemented the yeast sec19-1 (gdi1) mutation. AtGDI1 is expressed almost ubiquitously in Arabidopsis tissues. The method described here indicates the physiological interaction of two plant molecules, Ara4 and GDI, in yeast and should be applicable to other foreign genes.
DOI: 10.1016/s0021-9258(17)40696-x
发表时间: 1994-06
期刊: The Journal of biological chemistry
影响因子: --
作者:
A. Dirac-Svejstrup;T. Soldati;A. D. Shapiro;S. Pfeffer
通讯作者: A. Dirac-Svejstrup;T. Soldati;A. D. Shapiro;S. Pfeffer
GDP 解离抑制剂可防止 Rac GTP 结合蛋白引起的内在和 GTP 酶激活蛋白刺激的 GTP 水解。
DOI: --
发表时间: 1993
期刊: The Journal of biological chemistry
影响因子: --
作者:
Chuang,TH;Xu,X;Knaus,UG;Hart,MJ;Bokoch,GM
通讯作者: Bokoch,GM
DOI: 10.1002/j.1460-2075.1994.tb06436.x
发表时间: 1994-04-01
期刊: EMBO JOURNAL
影响因子: 11.4
作者:
GARRETT, MD;ZAHNER, JE;NOVICK, PJ
通讯作者: NOVICK, PJ
DOI: 10.1002/j.1460-2075.1989.tb03560.x
发表时间: 1989
期刊: The EMBO journal
影响因子: --
作者:
Walworth,NC;Goud,B;Kabcenell,AK;Novick,PJ
通讯作者: Novick,PJ
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DOI: 10.1128/mcb.12.5.2017-2028.1992
发表时间: 1992
影响因子: 5.3
作者:
Walworth,NC;Brennwald,P;Kabcenell,AK;Garrett,M;Novick,P
通讯作者: Novick,P