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Titus AR, Herron P, Streletzky KA, Madeira PP, Uversky VN, Zaslavsky BY. Effect of trimethylamine- N-oxide on the phase separation of aqueous polyethylene glycol-600-Dextran-75 two-phase systems. Phys Chem Chem Phys 2024; 26:10546-10556. [PMID: 38506647 DOI: 10.1039/d3cp06200g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
The emergence of phase separation in both intracellular biomolecular condensates (membrane-less organelles) and in vitro aqueous two-phase systems (ATPS) relies on the formation of immiscible water-based phases/domains. The solvent properties and arrangement of hydrogen bonds within these domains have been shown to differ and can be modulated with the addition of various inorganic salts and osmolytes. The naturally occuring osmolyte, trimethylamine-N-oxide (TMAO), is well established as a biological condensate stabilizer whose presence results in enhanced phase separation of intracellular membrane-less compartments. Here, we show the unique effect of TMAO on the mechanism of phase separation in model PEG-600-Dextran-75 ATPS using dynamic and static light scattering in conjunction with ATR-FTIR and solvatochromic analysis. We observe that the presence of TMAO may enhance or destabilize phase separation depending on the concentration of phase forming components. Additionally, the behavior and density of mesoscopic polymer agglomerates, which arise prior to macroscopic phase separation, are altered by the presence and concentration of TMAO.
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Affiliation(s)
- Amber R Titus
- Cleveland Diagnostics, 3615 Superior Ave., Cleveland, OH 44114, USA.
| | - Patrick Herron
- Department of Physics, Cleveland State University, Cleveland, Ohio 44115, USA.
| | - Kiril A Streletzky
- Department of Physics, Cleveland State University, Cleveland, Ohio 44115, USA.
| | - Pedro P Madeira
- Centro de Investigacao em Materiais Ceramicos e Compositos, Department of Chemistry, 3810-193 Aveiro, Portugal.
| | - Vladimir N Uversky
- Department of Molecular Medicine and Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA.
| | - Boris Y Zaslavsky
- Cleveland Diagnostics, 3615 Superior Ave., Cleveland, OH 44114, USA.
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Thermodynamic insights into phase behavior a new aqueous two-phase system at different temperatures: experimental equilibria, data correlation and modeling. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Vieira AW, da Cruz Silva K, Mageste AB, Rodrigues GD, de Lemos LR. Lycopene partition in new aqueous two-phase systems. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116755] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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da Silva N, Ferreira LA, Belgovskiy AI, Madeira PP, Teixeira JA, Mann EK, Adin Mann J, Meyer WV, Smart AE, Chernyak VY, Uversky VN, Zaslavsky BY. Effects of different solutes on the physical chemical properties of aqueous solutions via rearrangement of hydrogen bonds in water. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Use of aqueous two-phase systems formed by Triton X and choline chloride for extraction of organic and inorganic arsenic. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118082] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Neves DSC, Souza AS, de Lemos LR. Multivariate optimization of an aqueous two-phase extraction for determination of cadmium and manganese in food sample. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105458] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Titus AR, Ferreira LA, Belgovskiy AI, Kooijman EE, Mann EK, Mann JA, Meyer WV, Smart AE, Uversky VN, Zaslavsky BY. Interfacial tension and mechanism of liquid-liquid phase separation in aqueous media. Phys Chem Chem Phys 2020; 22:4574-4580. [PMID: 32048659 DOI: 10.1039/c9cp05810a] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The organization of multiple subcellular compartments is controlled by liquid-liquid phase separation. Phase separation of this type occurs with the emergence of interfacial tension. Aqueous two-phase systems formed by two non-ionic polymers can be used to separate and analyze biological macromolecules, cells and viruses. Phase separation in these systems may serve as the simple model of phase separation in cells also occurring in aqueous media. To better understand liquid-liquid phase separation mechanisms, interfacial tension was measured in aqueous two-phase systems formed by dextran and polyethylene glycol and by polyethylene glycol and sodium sulfate in the presence of different additives. Interfacial tension values depend on differences between the solvent properties of the coexisting phases, estimated experimentally by parameters representing dipole-dipole, ion-dipole, ion-ion, and hydrogen bonding interactions. Based on both current and literature data, we propose a mechanism for phase separation in aqueous two-phase systems. This mechanism is based on the fundamental role of intermolecular forces. Although it remains to be confirmed, it is possible that these may underlie all liquid-liquid phase separation processes in biology.
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Affiliation(s)
- Amber R Titus
- Department of Biological Sciences, Kent State University, OH, Kent, USA
| | | | | | - Edgar E Kooijman
- Department of Biological Sciences, Kent State University, OH, Kent, USA
| | | | - J Adin Mann
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, USA
| | | | | | - Vladimir N Uversky
- Department of Molecular Medicine and Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, USA and Institute for Biological Instrumentation of the Russian Academy of Sciences, Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", Pushchino, Moscow region, Russia
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Wang L, Li W, Liu Y, Zhi W, Han J, Wang Y, Ni L. Green separation of bromelain in food sample with high retention of enzyme activity using recyclable aqueous two-phase system containing a new synthesized thermo-responsive copolymer and salt. Food Chem 2019; 282:48-57. [DOI: 10.1016/j.foodchem.2019.01.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 11/17/2018] [Accepted: 01/03/2019] [Indexed: 12/12/2022]
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Osloob M, Roosta A. Experimental study of choline chloride and K2HPO4 aqueous two-phase system, and its application in the partitioning of penicillin G. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.01.134] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Ferreira LA, Walczyk Mooradally A, Zaslavsky B, Uversky VN, Graether SP. Effect of an Intrinsically Disordered Plant Stress Protein on the Properties of Water. Biophys J 2018; 115:1696-1706. [PMID: 30297135 DOI: 10.1016/j.bpj.2018.09.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 09/09/2018] [Accepted: 09/18/2018] [Indexed: 11/19/2022] Open
Abstract
Dehydrins are plant proteins that are able to protect plants from various forms of dehydrative stress such as drought, cold, and high salinity. Dehydrins can prevent enzymes from losing activity after freeze/thaw treatments. Previous studies had suggested that the dehydrins function by a molecular shield effect, essentially preventing a denatured enzyme from aggregating with another enzyme. Therefore, the larger the dehydrin, the larger the shield and theoretically the more effective the protection. Although this relationship holds for smaller dehydrins, it fails to explain why larger dehydrins are less efficient than would be predicted from their size. Using solvatochromic dyes to probe the solvent features of water, we first confirm that the dehydrins do not bind the dyes, which would interfere with interpretation of the data. We then show that the dehydrins have an effect on three solvent properties of water (dipolarity/polarizability, hydrogen-bond donor acidity and hydrogen-bond acceptor basicity), which can contribute to the protective mechanism of these proteins. Interpretation of these data suggests that although polyethylene glycol and dehydrins have similar protective effects, dehydrins may more efficiently modify the hydrogen-bonding ability of bulk water to prevent enzyme denaturation. This possibly explains why dehydrins recover slightly more enzyme activity than polyethylene glycol.
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Affiliation(s)
| | | | | | - Vladimir N Uversky
- Department of Molecular Medicine and Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, Florida; Institute for Biological Instrumentation, Russian Academy of Sciences, Pushchino, Moscow Region, Russian Federation.
| | - Steffen P Graether
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, Canada.
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Ferreira L, Uversky V, Zaslavsky B. Modified binodal model describes phase separation in aqueous two-phase systems in terms of the effects of phase-forming components on the solvent features of water. J Chromatogr A 2018; 1567:226-232. [DOI: 10.1016/j.chroma.2018.07.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Revised: 06/27/2018] [Accepted: 07/02/2018] [Indexed: 11/27/2022]
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