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首页> 外文期刊>Journal of bacteriology >Roles of Three Histidine Kinase Genes in Hyphal Development and Virulence of the Pathogenic Fungus Candida albicans
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Roles of Three Histidine Kinase Genes in Hyphal Development and Virulence of the Pathogenic Fungus Candida albicans

机译:三个组氨酸激酶基因在病原真菌白色念珠菌菌丝发育和致病性中的作用

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The pathogenic fungus Candida albicans harbors three histidine kinase genes called CaSLN1, CaNIK1, and CaHK1. The disruption of any one of these three genes impaired the hyphal formation and attenuated the virulence of C. albicans in a mouse systemic candidiasis model. The effects of the disruption on hyphal formation and virulence were most severe in the cahk1Δ null mutants. Although the double disruption of CaSLN1 and CaNIK1 was impossible, further deletion of CaSLN1 or CaNIK1 in thecahk1Δ null mutants partially restored the serum-induced hypha-forming ability and virulence. When incubated with radiolabelled ATP, the recombinant CaSln1 and CaNik1 proteins, which contained their own kinase and response regulator domains, were autophosphorylated, whereas CaHk1p was not. These results imply that in C. albicans, CaSLN1 and CaNIK1 function upstream of CaHK1 but are in distinct signal transmission pathways.
机译:病原真菌白色念珠菌包含三个组氨酸激酶基因,分别为 CaSLN1 CaNIK1 CaHK1 。这三个基因中任何一个的破坏都会损害菌丝的形成,并削弱 C的毒力。白念珠菌在小鼠全身念珠菌病模型中。在 cahk1 Δnull突变体中,破坏对菌丝形成和毒力的影响最为严重。尽管不可能完全破坏 CaSLN1 CaNIK1 ,但在中进一步删除 CaSLN1 CaNIK1 cahk1 Δnull突变体部分恢复了血清诱导的菌丝形成能力和毒力。当与放射性标记的ATP孵育时,包含其自身激酶和响应调节域的重组CaSln1和CaNik1蛋白会被自身磷酸化,而CaHk1p则不会。这些结果暗示在 C中。 albicans CaSLN1 CaNIK1 CaHK1 的上游起作用,但在不同的信号传递途径中。

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