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Koja Y, Joshima Y, Yoritaka Y, Arakawa T, Go H, Hakamata N, Kaseda H, Hattori T, Takeda S. Formation of subcellular compartments by condensation-prone protein OsJAZ2 in Oryza sativa and Nicotiana benthamiana leaf cells. Plant Cell Rep 2023; 42:269-286. [PMID: 36449075 DOI: 10.1007/s00299-022-02955-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 07/17/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
OsJAZ2 protein has a propensity to form condensates, possibly by multivalent interactions, and can be used to construct artificial compartments in plant cells. Eukaryotic cells contain various membraneless organelles, which are compartments consisting of proteinaceous condensates formed by phase separation. Such compartments are attractive for bioengineering and synthetic biology, because they can modify cellular function by the enrichment of molecules of interest and providing an orthogonal reaction system. This study reports that Oryza sativa JAZ2 protein (OsJAZ2) is an atypical jasmonate signalling regulator that can form large condensates in both the nucleus and cytosol of O. sativa cells. TIFY and Jas domains and low-complexity regions contribute to JAZ2 condensation, possibly by multivalent interaction. Fluorescence recovery after photobleaching (FRAP) analysis suggests that JAZ2 condensates form mostly gel-like or solid compartments, but can also be in a liquid-like state. Deletion of the N-terminal region or the TIFY domain of JAZ2 causes an increase in the mobile fraction of JAZ2 condensates, moderately. Moreover, JAZ2 can also form liquid-like condensates when expressed in Nicotiana benthamiana cells. The recombinant JAZ2 fused to the green fluorescent protein (GFP) forms condensate in vitro, suggesting that the intermolecular interaction of JAZ2 molecules is a driving force for condensation. These results suggest the potential use of JAZ2 condensates to construct artificial membraneless organelles in plant cells.
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Affiliation(s)
- Yoshito Koja
- Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Yu Joshima
- Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
- Bioscience and Biotechnology Center, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Yusuke Yoritaka
- Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Takuya Arakawa
- Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Haruka Go
- Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Nagisa Hakamata
- Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
- Bioscience and Biotechnology Center, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Hinako Kaseda
- Bioscience and Biotechnology Center, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Tsukaho Hattori
- Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
- Bioscience and Biotechnology Center, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Shin Takeda
- Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan.
- Bioscience and Biotechnology Center, Nagoya University, Chikusa, Nagoya, 464-8601, Japan.
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