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Dnj1 Promotes Virulence in by Maintaining Robust Endoplasmic Reticulum Homeostasis Under Temperature Stress

Front Microbiol. 2021-09; 
Linda C Horianopoulos, Christopher W J Lee, Guanggan Hu, Mélissa Caza, James W Kronstad
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摘要

The capacity of opportunistic fungal pathogens such as to cause disease is dependent on their ability to overcome an onslaught of stresses including elevated temperature under mammalian host conditions. Protein chaperones and co-chaperones play key roles in thermotolerance. In this study, we characterized the role of the endoplasmic reticulum (ER) J-domain containing co-chaperone, Dnj1, in the virulence of . A strain expressing a Dnj1-GFP fusion protein was used to confirm localization to the ER, and a deletion mutant was shown to be hypersensitive to the ER stress caused by tunicamycin (TM) or 4μ8C. Dnj1 and another ER chaperone, calnexin were found to coordinately maintain ER homeostasis and contribute to ... More

关键词

JDPs, co-chaperones, endoplasmic reticulum, fungal pathogenesis, heat shock, proteostasis