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Sobuz SU, Sato Y, Yoshizawa T, Karim F, Ono K, Sawa T, Miyamoto Y, Oka M, Yamagata K. SIRT7 regulates the nuclear export of NF-κB p65 by deacetylating Ran. Biochim Biophys Acta Mol Cell Res 2019; 1866:1355-1367. [PMID: 31075303 DOI: 10.1016/j.bbamcr.2019.05.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/19/2019] [Accepted: 05/01/2019] [Indexed: 12/25/2022]
Abstract
Sirtuin 7 (SIRT7) is an NAD+-dependent lysine deacetylase that regulates diverse biological processes. We recently observed that SIRT7 deficiency suppresses the nuclear accumulation of p65, which is a component of nuclear factor kappa B. However, the underlying molecular mechanism remains elusive. In this study, we demonstrated that SIRT7 interacts with a small GTPase, Ras-related nuclear antigen (Ran), and deacetylates Ran at K37. The nuclear export of p65 was facilitated in SIRT7-deficient fibroblast cells, while the nuclear export was inhibited in SIRT7-deficient cells expressing K37R-Ran (deacetylation-mimicking mutant). Additionally, the nuclear export of p65 in wild-type fibroblast cells was promoted by K37Q-Ran (acetylation-mimicking mutant). K37Q-Ran exhibited an increased ability to bind to chromosome region maintenance 1 (CRM1), which is a major nuclear receptor that mediates the export of cargo proteins, and enhanced the binding between p65 and CRM1. These data suggest that SIRT7 is a lysine deacetylase that targets the K37 residue of Ran to suppress the nuclear export of p65.
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Affiliation(s)
- Shihab U Sobuz
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Yoshifumi Sato
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Tatsuya Yoshizawa
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Fazlul Karim
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Katsuhiko Ono
- Department of Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Tomohiro Sawa
- Department of Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Yoichi Miyamoto
- Laboratory of Nuclear Transport Dynamics, National Institutes of Biomedical Innovation, Health and Nutrition, 7-6-8 Saito-Asagi, Ibaraki-shi, Osaka 567-0085, Japan
| | - Masahiro Oka
- Laboratory of Nuclear Transport Dynamics, National Institutes of Biomedical Innovation, Health and Nutrition, 7-6-8 Saito-Asagi, Ibaraki-shi, Osaka 567-0085, Japan
| | - Kazuya Yamagata
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan; Center for Metabolic Regulation of Healthy Aging (CMHA), Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan.
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