首页> 外文期刊>Acta microbiologica et immunologica Hungarica: A quarterly of the Hungarian Academy of Sciences >Heterotrimeric G protein mediated regulation of proteinase production in Aspergillus nidulans.
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Heterotrimeric G protein mediated regulation of proteinase production in Aspergillus nidulans.

机译:异三聚体G蛋白介导的构巢曲霉蛋白酶生产的调控。

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摘要

Extracellular proteinase production induced by carbon starvation was studied in a series of heterotrimeric G protein signaling pathway mutants of Aspergillus nidulans. All the mutants tested--including deltafadA (Galpha), deltasfaD (Gbeta), deltagpgA (Ggamma) and deltasfgA (regulator of FadA signaling)--showed an elevated proteinase production after glucose depletion. Our results strongly support the view that during growth, FadA/SfaD/GpgA G protein signaling inhibits proteinase production via both Galpha and Gbetagamma subunits, and all conditions, which are not sufficient to support vegetative growth and, hence, inhibit this type of G protein signaling, elevate extracellular proteinase activities.
机译:在一系列构巢曲霉的异源三聚体G蛋白信号通路突变体中研究了碳饥饿诱导的细胞外蛋白酶的产生。所测试的所有突变体-包括deltafadA(Galpha),deltasfaD(Gbeta),deltagpgA(Ggamma)和deltasfgA(FadA信号调节因子)-在葡萄糖耗竭后均显示蛋白酶产生增加。我们的结果强烈支持这样的观点,即在生长过程中,FadA / SfaD / GpgA G蛋白信号转导会通过Galpha和Gbetagamma亚基以及所有不足以支持营养生长并因此抑制这种G蛋白的条件抑制蛋白酶的产生。信号,提高细胞外蛋白酶的活性。

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