Myopathy associated BAG3 mutations lead to protein aggregation by stalling Hsp70 networks
oleh: Melanie Meister-Broekema, Rebecca Freilich, Chandhuru Jagadeesan, Jennifer N. Rauch, Rocio Bengoechea, William W. Motley, E. F. Elsiena Kuiper, Melania Minoia, Gabriel V. Furtado, Maria A. W. H. van Waarde, Shawn J. Bird, Adriana Rebelo, Stephan Zuchner, Peter Pytel, Steven S. Scherer, Federica F. Morelli, Serena Carra, Conrad C. Weihl, Steven Bergink, Jason E. Gestwicki, Harm H. Kampinga
| Format: | Article |
|---|---|
| Diterbitkan: | Nature Portfolio 2018-12-01 |
Deskripsi
BAG3 is a Hsp70 co-chaperone that is highly expressed in muscles. Here the authors show that several myofibrillar myopathy causing BAG3 mutations are not impaired in Hsp70 binding, but rather impair the ADP-ATP exchange step of the Hsp70 cycle, causing the aggregation of BAG3, Hsp70 and Hsp70 clients and leading to a collapse of protein homeostasis.