Polymorphism of Polymeric Amino Acid Regions in Fungal Proteins and Correlation with Altered Echinocandin and Azole Susceptibility.

Polymorphism of Polymeric Amino Acid Regions in Fungal Proteins and Correlation with Altered Echinocandin and Azole Susceptibility.
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真菌蛋白质中聚合氨基酸区域的多态性及其与改变的棘白菌素和唑敏感性的相关性。

DOI:
10.1128/aac.00870-18
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发表时间:
2018
影响因子:
4.9
通讯作者:
Katiyar,Santosh
Katiyar,Santosh
中科院分区:
医学2区
文献类型:
--
作者:
Challa,Krishna;Edlind,Tom;Katiyar,Santosh

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真菌蛋白中聚合氨基酸(polyX)区域的多态性代表了对环境压力(包括抗真菌暴露)的快速基因型适应的潜在机制。聚谷氨酰胺(polyQ)是8种真菌蛋白质组中最丰富的重复序列,优先存在于调节蛋白中。在光滑假丝酵母中,与唑或棘白菌素敏感性相关的36个蛋白存在多x多态性。在系统发育匹配的棘白菌素敏感/耐药菌株中,一般转录抑制因子Tup1A表现出Q44/Q45多态性,Hog1信号通路组分Ssk2表现出N44/N45多态性。
Polymorphism of polymeric amino acid (polyX) regions within fungal proteins represents a potential mechanism for rapid genotypic adaptation to environmental pressures, including antifungal exposure. Polyglutamine (polyQ) was the most abundant repeat in the proteomes of 8 diverse fungal species and was preferentially found in regulatory proteins. In Candida glabrata, polyX polymorphisms were characterized in 36 proteins implicated in azole or echinocandin susceptibility. General transcriptional repressor Tup1A exhibited Q44/Q45 polymorphism, and Hog1 signaling component Ssk2 exhibited N44/N45 polymorphism in phylogenetically matched echinocandin- and azole-susceptible/resistant strains, respectively.
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