Ancestral Ca2+ signaling machinery in early animal and fungal evolution.

Ancestral Ca2+ signaling machinery in early animal and fungal evolution.
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DOI:
10.1093/molbev/msr149
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发表时间:
2012-01
影响因子:
10.7
通讯作者:
Clapham DE
Clapham DE
中科院分区:
生物学1区
文献类型:
--
作者:
Cai X;Clapham DE

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动物和真菌从后孔达的一个共同的单细胞祖先分化,但他们表现出显着的差异,在其组成部分的Ca2+信号通路。许多Ca2+信号分子似乎是动物特异性或真菌特异性的,这通常被认为是由于谱系特异性适应不同的生理需求。在这里,通过分析几个近亲的动物和真菌的基因组数据,我们表明,动物和真菌的Ca2+信号转导机制的许多组件存在于浮游动物原生生物Thecamonas trahens,这属于推定的单细胞姐妹群后鞭毛纲。我们还确定了保守的Ca2+信号分子在动物和真菌的早期进化后,他们的分歧。此外,我们的研究结果揭示了在动物和基础真菌的单细胞祖先中的Ca2+通道和转运蛋白的谱系特异性扩张。这些发现为动物和真菌生物学关键的Ca2+信号的进化和调控提供了新的见解。
Animals and fungi diverged from a common unicellular ancestor of Opisthokonta, yet they exhibit significant differences in their components of Ca2+ signaling pathways. Many Ca2+ signaling molecules appear to be either animal-specific or fungal-specific, which is generally believed to result from lineage-specific adaptations to distinct physiological requirements. Here, by analyzing the genomic data from several close relatives of animals and fungi, we demonstrate that many components of animal and fungal Ca2+ signaling machineries are present in the apusozoan protist Thecamonas trahens, which belongs to the putative unicellular sister group to Opisthokonta. We also identify the conserved portion of Ca2+ signaling molecules in early evolution of animals and fungi following their divergence. Furthermore, our results reveal the lineage-specific expansion of Ca2+ channels and transporters in the unicellular ancestors of animals and in basal fungi. These findings provide novel insights into the evolution and regulation of Ca2+ signaling critical for animal and fungal biology.
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