Crystal structure and transient dimerization for the FKBP12 protein from the pathogenic fungus Candida auris.

Crystal structure and transient dimerization for the FKBP12 protein from the pathogenic fungus Candida auris.
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DOI:
10.1016/j.bbrc.2020.03.059
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发表时间:
2020-05-14
影响因子:
3.1
通讯作者:
Hernández G
Hernández G
中科院分区:
生物学4区
文献类型:
--
作者:
Bashir Q;Li Z;Li H;LeMaster DM;Hernández G

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国际社会对最近出现的耳念珠菌感染的关注不仅反映了其相对容易的传播和相当高的死亡率,而且还反映了对所有三种主要抗真菌药物的耐药性水平不断提高。当FK506结合蛋白FKBP12与该免疫抑制剂药物结合并且二元复合物然后抑制真菌钙调磷酸酶信号传导途径时,已经报道了广泛的真菌病原体的毒力降低。基于结构的药物设计工作已经描述了FK 506的修饰,其适度降低了对许多真菌病原体的毒力,同时还减轻了抑制患者组织免疫应答的副作用。为了帮助这些研究,我们报告了耳念珠菌FKBP 12的晶体结构。由于生理相关性已被提出为短暂的同源二聚体相互作用的远亲真菌FKBP12蛋白质,我们报告的解决方案NMR表征的同源二聚体相互作用的FKBP12蛋白质从耳念珠菌和光滑念珠菌。
International concern over the recent emergence of Candida auris infections reflects not only its comparative ease of transmission and substantial mortality but the increasing level of resistance observed to all three major classes of antifungal drugs. Diminution in virulence has been reported for a wide range of fungal pathogens when the FK506-binding protein FKBP12 binds to that immunosuppressant drug and the binary complex then inhibits the fungal calcineurin signaling pathway. Structure-based drug design efforts have described modifications of FK506 which modestly reduce virulence for a number of fungal pathogens while also lessening the side effect of suppressing the tissue immunity response in the patient. To aid in such studies, we report the crystal structure of Candida auris FKBP12. As physiological relevance has been proposed for transient homodimerization interactions of distantly related fungal FKBP12 proteins, we report the solution NMR characterization of the homodimerization interactions of the FKBP12 proteins from both Candida auris and Candida glabrata.
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