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Caprin-1 binding to...
Caprin-1 binding to the critical stress granule protein G3BP1 is influenced by pH
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- Schulte, Tim (author)
- Karolinska Inst, Dept Med Solna, Sci Life Lab, S-17177 Stockholm, Sweden.;Karolinska Univ Hosp, Div Infect Dis, S-17177 Stockholm, Sweden.
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- Panas, Marc D. (author)
- Karolinska Institutet
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- Han, Xiao (author)
- Karolinska Institutet
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- Williams, Lucy (author)
- Karolinska Inst, Dept Microbiol Tumor & Cell Biol, S-17177 Stockholm, Sweden.
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- Kedersha, Nancy (author)
- Harvard Med Sch, Brigham & Womens Hosp, Div Rheumatol Immun & Inflammat, Boston, MA 02115 USA.;Harvard Med Sch, Harvard Med Sch Initiat RNA Med, Boston, MA 02115 USA.
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- Fleck, Jonas Simon (author)
- Karolinska Inst, Dept Med Solna, Sci Life Lab, S-17177 Stockholm, Sweden.;Karolinska Univ Hosp, Div Infect Dis, S-17177 Stockholm, Sweden.
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- Tan, Timothy J. C. (author)
- Karolinska Inst, Dept Microbiol Tumor & Cell Biol, S-17177 Stockholm, Sweden.
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- Dopico, Xaquin Castro (author)
- Karolinska Inst, Dept Microbiol Tumor & Cell Biol, S-17177 Stockholm, Sweden.
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- Olsson, Anders (author)
- KTH,Albanova VinnExcellence Center for Protein Technology, ProNova,Läkemedelsutveckling,Prot Express & Characterizat,
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- Morro, Ainhoa Moliner (author)
- Karolinska Inst, Dept Microbiol Tumor & Cell Biol, S-17177 Stockholm, Sweden.
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- Hanke, Leo (author)
- Karolinska Institutet
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- Nilvebrant, Johan, 1982- (author)
- KTH,Albanova VinnExcellence Center for Protein Technology, ProNova,Proteinteknologi,Science for Life Laboratory, SciLifeLab
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- Giang, Kim Anh (author)
- KTH,Albanova VinnExcellence Center for Protein Technology, ProNova,Proteinvetenskap,Science for Life Laboratory, SciLifeLab
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- Nygren, Per-Åke, 1961- (author)
- KTH,Albanova VinnExcellence Center for Protein Technology, ProNova,Proteinvetenskap,Science for Life Laboratory, SciLifeLab
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- Anderson, Paul (author)
- Harvard Med Sch, Brigham & Womens Hosp, Div Rheumatol Immun & Inflammat, Boston, MA 02115 USA.;Harvard Med Sch, Harvard Med Sch Initiat RNA Med, Boston, MA 02115 USA.
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- Achour, Adnane (author)
- Karolinska Institutet
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- McInerney, Gerald M. (author)
- Karolinska Inst, Dept Microbiol Tumor & Cell Biol, S-17177 Stockholm, Sweden.
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Karolinska Institutet Karolinska Inst, Dept Med Solna, Sci Life Lab, S-17177 Stockholm, Sweden;Karolinska Univ Hosp, Div Infect Dis, S-17177 Stockholm, Sweden. (creator_code:org_t)
- The Royal Society, 2023
- 2023
- English.
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In: Open Biology. - : The Royal Society. - 2046-2441. ; 13:5
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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http://kipublication...
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Abstract
Subject headings
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- G3BP is the central node within stress-induced protein-RNA interaction networks known as stress granules (SGs). The SG-associated proteins Caprin-1 and USP10 bind mutually exclusively to the NTF2 domain of G3BP1, promoting and inhibiting SG formation, respectively. Herein, we present the crystal structure of G3BP1-NTF2 in complex with a Caprin-1-derived short linear motif (SLiM). Caprin-1 interacts with His-31 and His-62 within a third NTF2-binding site outside those covered by USP10, as confirmed using biochemical and biophysical-binding assays. Nano-differential scanning fluorimetry revealed reduced thermal stability of G3BP1-NTF2 at acidic pH. This destabilization was counterbalanced significantly better by bound USP10 than Caprin-1. The G3BP1/USP10 complex immunoprecipated from human U2OS cells was more resistant to acidic buffer washes than G3BP1/Caprin-1. Acidification of cellular condensates by approximately 0.5 units relative to the cytosol was detected by ratiometric fluorescence analysis of pHluorin2 fused to G3BP1. Cells expressing a Caprin-1/FGDF chimera with higher G3BP1-binding affinity had reduced Caprin-1 levels and slightly reduced condensate sizes. This unexpected finding may suggest that binding of the USP10-derived SLiM to NTF2 reduces the propensity of G3BP1 to enter condensates.
Subject headings
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
Keyword
- stress granule
- G3BP
- caprin-1
- crystal structure
- condensate
- pH
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Schulte, Tim
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Panas, Marc D.
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Han, Xiao
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Williams, Lucy
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Kedersha, Nancy
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Fleck, Jonas Sim ...
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show more...
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Tan, Timothy J. ...
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Dopico, Xaquin C ...
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Olsson, Anders
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Morro, Ainhoa Mo ...
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Hanke, Leo
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Nilvebrant, Joha ...
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Giang, Kim Anh
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Nygren, Per-Åke, ...
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Anderson, Paul
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Achour, Adnane
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McInerney, Geral ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Biochemistry and ...
- Articles in the publication
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Open Biology
- By the university
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Royal Institute of Technology
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Karolinska Institutet