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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Hsu, Pang-hung Lee, Sheng-chung Wang, Hsiao-ting Tsai, Ming-daw Huang, Jing-yi Tan, Bertrand Chin-ming Chang, Hsin-yun Yang, Fu-chia Lin, Ya-huei Su, Su-hui Chen, Wei-hao Chiang, Chun-yi |
| Description | Author Affiliation: Yang FC ( From the Institutes of Molecular Medicine and.) |
| Abstract | Salt-inducible kinase 2 (SIK2) is an important regulator of cAMP response element-binding protein-mediated gene expression in various cell types and is the only AMP-activated protein kinase family member known to interact with the p97/valosin-containing protein (VCP) ATPase. Previously, we have demonstrated that SIK2 can regulate autophagy when proteasomal function is compromised. Here we report that physical and functional interactions between SIK2 and p97/VCP underlie the regulation of endoplasmic reticulum (ER)-associated protein degradation (ERAD). SIK2 co-localizes with p97/VCP in the ER membrane and stimulates its ATPase activity through direct phosphorylation. Although the expression of wild-type recombinant SIK2 accelerated the degradation and removal of ERAD substrates, the kinase-deficient variant conversely had no effect. Furthermore, down-regulation of endogenous SIK2 or mutation of the SIK2 target site on p97/VCP led to impaired degradation of ERAD substrates and disruption of ER homeostasis. Collectively, these findings highlight a mechanism by which the interplay between SIK2 and p97/VCP contributes to the regulation of ERAD in mammalian cells. |
| ISSN | 00219258 |
| e-ISSN | 1083351X |
| Journal | Journal of Biological Chemistry |
| Issue Number | 47 |
| Volume Number | 288 |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology (United States) |
| Publisher Date | 2013-11-22 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Adenosine Triphosphatases Metabolism Cell Cycle Proteins Endoplasmic Reticulum-Associated Degradation Physiology Endoplasmic Reticulum Intracellular Membranes Protein-Serine-Threonine Kinases Genetics HEK293 Cells HeLa Cells Mutation Phosphorylation Research Support, Non-U.S. Gov't Biochemistry Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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