Ergosterol promotes pheromone signaling and plasma membrane fusion in mating yeast.
Ergosterol promotes pheromone signaling and plasma membrane fusion in mating yeast.
复制标题
麦角固醇促进交配酵母中的信息素信号传导和质膜融合。
DOI:
10.1083/jcb.200705076
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发表时间:
2008-02-25
影响因子:
7.8
通讯作者:
Grote, Eric
中科院分区:
文献类型:
--
作者:
Jin, Hui;McCaffery, J. Michael;Grote, Eric
Ergosterol depletion independently inhibits two aspects of yeast mating: pheromone signaling and plasma membrane fusion. In signaling, ergosterol participates in the recruitment of Ste5 to a polarized site on the plasma membrane. Ergosterol is thought to form microdomains within the membrane by interacting with the long acyl chains of sphingolipids. We find that although sphingolipid-free ergosterol is concentrated at sites of cell–cell contact, transmission of the pheromone signal at contact sites depends on a balanced ratio of ergosterol to sphingolipids. If a mating pair forms between ergosterol-depleted cells despite the attenuated pheromone response, the subsequent process of membrane fusion is retarded. Prm1 also participates in membrane fusion. However, ergosterol and Prm1 have independent functions and only prm1 mutant mating pairs are susceptible to contact-dependent lysis. In contrast to signaling, plasma membrane fusion is relatively insensitive to sphingolipid depletion. Thus, the sphingolipid-free pool of ergosterol promotes plasma membrane fusion.
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影响因子:
56.9
作者:
Butty, AC;Pryciak, PM;Peter, M
通讯作者:
Peter, M
影响因子:
4.1
作者:
Epand, RM;Vuong, P;Epand, RF
通讯作者:
Epand, RF
影响因子:
11.4
作者:
Friant, S;Lombardi, R;Riezman, H
通讯作者:
Riezman, H
影响因子:
3.3
作者:
Grote, E;Novick, PJ
通讯作者:
Novick, PJ
DOI:
10.1083/jcb.200107135
发表时间:
2002-01-21
期刊:
The Journal of cell biology
影响因子:
--
作者:
deHart AK;Schnell JD;Allen DA;Hicke L
通讯作者:
Hicke L