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- W4289519595 abstract "Many proteins harboring low complexity or intrinsically disordered sequences (IDRs) are capable of undergoing liquid–liquid phase separation to form mesoscale condensates that function as biochemical niches with the ability to concentrate or sequester macromolecules and regulate cellular activity. Engineered disordered proteins have been used to generate programmable synthetic membraneless organelles in cells. Phase separation is governed by the strength of interactions among polypeptides with multivalency enhancing phase separation at lower concentrations. Previously, we and others demonstrated enzymatic control of IDR valency from multivalent precursors to dissolve condensed phases. Here, we develop noncovalent strategies to multimerize an individual IDR, the RGG domain of LAF-1, using protein interaction domains to regulate condensate formation in vitro and in living cells. First, we characterize modular dimerization of RGG domains at either terminus using cognate high-affinity coiled-coil pairs to form stable condensates in vitro. Second, we demonstrate temporal control over phase separation of RGG domains fused to FRB and FKBP in the presence of dimerizer. Further, using a photocaged dimerizer, we achieve optically induced condensation both in cell-sized emulsions and within live cells. Collectively, these modular tools allow multiple strategies to promote phase separation of a common core IDR for tunable control of condensate assembly." @default.
- W4289519595 created "2022-08-03" @default.
- W4289519595 creator A5028438386 @default.
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- W4289519595 date "2022-08-02" @default.
- W4289519595 modified "2023-09-30" @default.
- W4289519595 title "Protein Condensate Formation via Controlled Multimerization of Intrinsically Disordered Sequences" @default.
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- W4289519595 doi "https://doi.org/10.1021/acs.biochem.2c00250" @default.
- W4289519595 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35918061" @default.
- W4289519595 hasPublicationYear "2022" @default.
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