Bud3 activates Cdc42 to establish a proper growth site in budding yeast.
Bud3 activates Cdc42 to establish a proper growth site in budding yeast.
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Bud3激活CDC42以在萌芽的酵母中建立适当的生长位点。
DOI:
10.1083/jcb.201402040
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发表时间:
2014-07-07
期刊:
影响因子:
--
通讯作者:
Park HO
中科院分区:
文献类型:
--
作者:
Kang PJ;Lee ME;Park HO
Biphasic activation of Cdc42 by Bud3 and then Cdc24 during G1 of the yeast cell cycle is necessary for assembly of a proper bud site. Cell polarization occurs along a single axis that is generally determined by a spatial cue, yet the underlying mechanism is poorly understood. Using biochemical assays and live-cell imaging, we show that cell polarization to a proper growth site requires activation of Cdc42 by Bud3 in haploid budding yeast. Bud3 catalyzes the release of guanosine diphosphate (GDP) from Cdc42 and elevates intracellular Cdc42–guanosine triphosphate (GTP) levels in cells with inactive Cdc24, which has as of yet been the sole GDP–GTP exchange factor for Cdc42. Cdc42 is activated in two temporal steps in the G1 phase: the first depends on Bud3, whereas subsequent activation depends on Cdc24. Mutational analyses suggest that biphasic activation of Cdc42 in G1 is necessary for assembly of a proper bud site. Biphasic activation of Cdc42 or Rac GTPases may be a general mechanism for spatial cue–directed cell polarization in eukaryotes.
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影响因子:
64.5
作者:
GYURIS, J;GOLEMIS, E;BRENT, R
通讯作者:
BRENT, R
DOI:
10.1083/jcb.200109062
发表时间:
2002-01-21
期刊:
The Journal of cell biology
影响因子:
--
作者:
Gladfelter AS;Bose I;Zyla TR;Bardes ES;Lew DJ
通讯作者:
Lew DJ
影响因子:
4
作者:
Kang, Pil Jung;Hood-DeGrenier, Jennifer K.;Park, Hay-Oak
通讯作者:
Park, Hay-Oak
影响因子:
5.3
作者:
Daubon, Thomas;Buccione, Roberto;Genot, Elisabeth
通讯作者:
Genot, Elisabeth
影响因子:
3.2
作者:
FREIFELDER, D
通讯作者:
FREIFELDER, D