Article
A chimeric mutant analysis in yeast cells suggests BiP independent regulation of the mammalian endoplasmic reticulum-stress sensor IRE1α.
Bioscience, biotechnology, and biochemistry - 1 Sept 2018
Mai Thanh Chi, Munakata Takeo, Tran Duc Minh, Takagi Hiroshi, Kimata Yukio
Abstract excerpt
An endoplasmic reticulum (ER)-located transmembrane protein, Ire1, triggers cytoprotective events upon ER stress. Chimeric yeast Ire1 carrying the luminal domain of the mammalian major Ire1 paralogue IRE1α is upregulated in ER-stressed yeast cells, but is poorly associated with the ER-located chaperone BiP even under non-stressed conditions. This observation contradicts the theory that BiP is the master regulator...
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