Article
Endoplasmic reticulum stress or mutation of an EF-hand Ca(2+)-binding domain directs the FKBP65 rotamase to an ERAD-based proteolysis.
Cell stress & chaperones - 1 Nov 2011
Murphy Lindsey A, Ramirez Emily A, Trinh Van T, Herman Alexander M, Anderson Valen C, Brewster Jay L
Abstract excerpt
FKBP65 is an endoplasmic reticulum (ER)-localized chaperone and rotamase, with cargo proteins that include tropoelastin and collagen. In humans, mutations in FKBP65 have recently been shown to cause a form of osteogenesis imperfecta (OI), a brittle bone disease resulting from deficient secretion of mature type I collagen. In this work, we describe the rapid proteolysis of FKBP65 in response to ER stress signals...
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