Dominant negative alleles of SEC10 reveal distinct domains involved in secretion and morphogenesis in yeast.
Dominant negative alleles of SEC10 reveal distinct domains involved in secretion and morphogenesis in yeast.
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SEC10 的显性负等位基因揭示了参与酵母分泌和形态发生的不同结构域。
DOI:
10.1091/mbc.9.7.1725
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发表时间:
1998
影响因子:
3.3
通讯作者:
Novick,P
中科院分区:
文献类型:
--
作者:
Roth,D;Guo,W;Novick,P
The accurate targeting of secretory vesicles to distinct sites on the plasma membrane is necessary to achieve polarized growth and to establish specialized domains at the surface of eukaryotic cells. Members of a protein complex required for exocytosis, the exocyst, have been localized to regions of active secretion in the budding yeastSaccharomyces cerevisiaewhere they may function to specify sites on the plasma membrane for vesicle docking and fusion. In this study we have addressed the function of one member of the exocyst complex, Sec10p. We have identified two functional domains of Sec10p that act in a dominant-negative manner to inhibit cell growth upon overexpression. Phenotypic and biochemical analysis of the dominant-negative mutants points to a bifunctional role for Sec10p. One domain, consisting of the amino-terminal two-thirds of Sec10p directly interacts with Sec15p, another exocyst component. Overexpression of this domain displaces the full-length Sec10 from the exocyst complex, resulting in a block in exocytosis and an accumulation of secretory vesicles. The carboxy-terminal domain of Sec10p does not interact with other members of the exocyst complex and expression of this domain does not cause a secretory defect. Rather, this mutant results in the formation of elongated cells, suggesting that the second domain of Sec10p is required for morphogenesis, perhaps regulating the reorientation of the secretory pathway from the tip of the emerging daughter cell toward the mother–daughter connection during cell cycle progression.
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DOI:
10.1083/jcb.137.7.1589
发表时间:
1997-06-30
期刊:
The Journal of cell biology
影响因子:
--
作者:
Prekeris R;Terrian DM
通讯作者:
Terrian DM
DOI:
10.1073/pnas.89.10.4338
发表时间:
1992-05-15
影响因子:
11.1
作者:
GERST, JE;RODGERS, L;WIGLER, M
通讯作者:
WIGLER, M
DOI:
--
发表时间:
1995
影响因子:
11.1
作者:
A. E. Ting;Christopher D. Hazuka;Shu;Mark D. Kirk;Mark D. Kirk;Andrew J. Bean;Richard H. Scheller
通讯作者:
Richard H. Scheller
影响因子:
3.5
作者:
Christopher D. Hazuka;Shu;Richard H. Scheller
通讯作者:
Richard H. Scheller
影响因子:
3.3
作者:
Mondésert,G;Clarke,DJ;Reed,SI
通讯作者:
Reed,SI