1
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Moita MLC, Fialho BG, Santos ÂF, Lampreia IM. Probing molecular interactions in the system {water + 2-(diethylamino) ethanol} using solvatochromic dyes and excess partial molar enthalpies, at 298.15 K. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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2
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Forero-Martinez NC, Cortes-Huerto R, Benedetto A, Ballone P. Thermoresponsive Ionic Liquid/Water Mixtures: From Nanostructuring to Phase Separation. Molecules 2022; 27:molecules27051647. [PMID: 35268747 PMCID: PMC8912101 DOI: 10.3390/molecules27051647] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/15/2022] [Accepted: 02/28/2022] [Indexed: 12/10/2022] Open
Abstract
The thermodynamics, structures, and applications of thermoresponsive systems, consisting primarily of water solutions of organic salts, are reviewed. The focus is on organic salts of low melting temperatures, belonging to the ionic liquid (IL) family. The thermo-responsiveness is represented by a temperature driven transition between a homogeneous liquid state and a biphasic state, comprising an IL-rich phase and a solvent-rich phase, divided by a relatively sharp interface. Demixing occurs either with decreasing temperatures, developing from an upper critical solution temperature (UCST), or, less often, with increasing temperatures, arising from a lower critical solution temperature (LCST). In the former case, the enthalpy and entropy of mixing are both positive, and enthalpy prevails at low T. In the latter case, the enthalpy and entropy of mixing are both negative, and entropy drives the demixing with increasing T. Experiments and computer simulations highlight the contiguity of these phase separations with the nanoscale inhomogeneity (nanostructuring), displayed by several ILs and IL solutions. Current applications in extraction, separation, and catalysis are briefly reviewed. Moreover, future applications in forward osmosis desalination, low-enthalpy thermal storage, and water harvesting from the atmosphere are discussed in more detail.
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Affiliation(s)
- Nancy C. Forero-Martinez
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 9, 55128 Mainz, Germany;
- Max-Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Robinson Cortes-Huerto
- Max-Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- Correspondence:
| | - Antonio Benedetto
- School of Physics, University College Dublin, 94568 Dublin, Ireland; (A.B.); (P.B.)
- Conway Institute for Biomolecular and Biomedical Research, University College Dublin, 94568 Dublin, Ireland
- Department of Sciences, University of Roma Tre, 00146 Rome, Italy
| | - Pietro Ballone
- School of Physics, University College Dublin, 94568 Dublin, Ireland; (A.B.); (P.B.)
- Conway Institute for Biomolecular and Biomedical Research, University College Dublin, 94568 Dublin, Ireland
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3
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Nishikawa K. The Solution Chemistry of Mixing States Probed via Fluctuations: a Direct Description of Inhomogeneity in Mixing. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20210205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Keiko Nishikawa
- Toyota Physical & Chemical Research Institute, Nagakute, Aichi 480-1192, Japan
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan
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4
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Ohgi H, Imamura H, Sumi T, Nishikawa K, Koga Y, Westh P, Morita T. Two different regimes in alcohol-induced coil-helix transition: effects of 2,2,2-trifluoroethanol on proteins being either independent of or enhanced by solvent structural fluctuations. Phys Chem Chem Phys 2021; 23:5760-5772. [PMID: 33481971 DOI: 10.1039/d0cp05103a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Inhomogeneous distribution of constituent molecules in a mixed solvent has been known to give remarkable effects on the solute, e.g., conformational changes of biomolecules in an alcohol-water mixture. We investigated the general effects of 2,2,2-trifluoroethanol (TFE) on proteins/peptides in a mixture of water and TFE using melittin as a model protein. Fluctuations and Kirkwood-Buff integrals (KBIs) in the TFE-H2O mixture, quantitative descriptions of inhomogeneity, were determined by small-angle X-ray scattering investigation and compared with those in the aqueous solutions of other alcohols. The concentration fluctuation for the mixtures ranks as methanol < ethanol ≪ TFE < tert-butanol < 1-propanol, indicating that the inhomogeneity of molecular distribution in the TFE-H2O mixture is unexpectedly comparable to those in the series of mono-ols. On the basis of the concentration dependence of KBIs between the TFE molecules, it was found that a strong attraction between the TFE molecules is not necessarily important to induce helix conformation, which is inconsistent with the previously proposed mechanism. To address this issue, by combining the KBIs and the helix contents reported by the experimental spectroscopic studies, we quantitatively evaluated the change in the preferential binding parameter of TFE to melittin attributed to the coil-helix transition. As a result, we found two different regimes on TFE-induced helix formation. In the dilute concentration region of TFE below ∼2 M, where the TFE molecules are not aggregated among themselves, the excess preferential binding of TFE to the helix occurs due to the direct interaction between them, namely independent of the solvent fluctuation. In the higher concentration region above ∼2 M, in addition to the former effect, the excess preferential binding is significantly enhanced by the solvent fluctuation. This scheme should be held as general cosolvent effects of TFE on proteins/peptides.
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Affiliation(s)
- Hiroyo Ohgi
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan.
| | - Hiroshi Imamura
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Shiga 525-8577, Japan
| | - Tomonari Sumi
- Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan.
| | - Keiko Nishikawa
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan. and Toyota Physical & Chemical Research Institute, Nagakute, Aichi 480-1192, Japan
| | - Yoshikata Koga
- Department of Chemistry, The University of British Columbia, Vancouver, V6T 1Z1, Canada
| | - Peter Westh
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads, 2800, Kgs, Lyngby, Denmark
| | - Takeshi Morita
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan.
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5
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Ludden MD, Ward MD. Outside the box: quantifying interactions of anions with the exterior surface of a cationic coordination cage. Dalton Trans 2021; 50:2782-2791. [PMID: 33566043 DOI: 10.1039/d0dt04211k] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe a study of the binding of anions to the surface of an octanuclear coordination cage HW, which carries a 16+ charge, in aqueous solution. Anionic aromatic fluorophores such as fluorescein (and derivatives) and hydroxypyrene tris-sulfonate (HPTS) bind strongly to an extent depending on their charge and hydrophobicity. Job plots indicated binding of up to six such fluorescent anions to HW, implying that one anion can bind to each face of the cubic cage, as previously demonstrated crystallographically with small anions such as halides. The quenching of these fluorophores on association with the cage provides the basis of a fluorescence displacement assay to investigate binding of other anions: addition of analyte (organic or inorganic) anions in titration experiments to an HW/fluorescein combination results in displacement and restoration of the fluorescence from the bound fluorescein, allowing calculation of 1 : 1 binding constants for the HW/anion combinations. Relative binding affinities of simple anions for the cage surface can be approximately rationalised on the basis of ease of desolvation (e.g. F- < Cl- < Br-), electrostatic factors given the 16+ charge on the cage (monoanions < dianions), and extent of hydrophobic surface. The interaction of a di-anionic pH indicator (bromocresol purple) with HW results in a pKa shift, with the surface-bound di-anionic form stabilised by approximately 1 pKa unit compared to the non-bound neutral form due to the charge on the cage.
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Affiliation(s)
- Michael D Ludden
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK.
| | - Michael D Ward
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK.
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6
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Zhang Y, Wu Z, Wang Y, He H, Yu Z. Excess spectroscopy and its applications in the study of solution chemistry. PURE APPL CHEM 2020. [DOI: 10.1515/pac-2020-0107] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Abstract
Characterization of structural heterogeneity of liquid solutions and the pursuit of its nature have been challenging tasks to solution chemists. In the last decade, an emerging method called excess spectroscopy has found applications in this area. The method, combining the merits of molecular spectroscopy and excess thermodynamic functions, shows the ability to enhance the apparent resolution of spectra, provides abundant information concerning solution structures and intermolecular interactions. In this review, the thinking and mathematics of the method, as well as its developments, are presented first. Then, research progress related to the exploration of the method is thoroughly reviewed. The materials are classified into two parts, small-molecular solutions and ionic liquid solutions. Finally, potential challenges and the perspective for further development of the method are discussed.
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Affiliation(s)
- Yaqin Zhang
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Beijing Key Laboratory of Ionic Liquids Clean Process , Institute of Process Engineering, Chinese Academy of Sciences , Beijing 100190 , P.R. China
| | - Zhiwei Wu
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Beijing Key Laboratory of Ionic Liquids Clean Process , Institute of Process Engineering, Chinese Academy of Sciences , Beijing 100190 , P.R. China
| | - Yaqian Wang
- MOE Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology, Department of Chemistry , Tsinghua University , Beijing 100084 , P.R. China
| | - Hongyan He
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Beijing Key Laboratory of Ionic Liquids Clean Process , Institute of Process Engineering, Chinese Academy of Sciences , Beijing 100190 , P.R. China
| | - Zhiwu Yu
- MOE Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology, Department of Chemistry , Tsinghua University , Beijing 100084 , P.R. China
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7
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Enami S, Ishizuka S, Colussi AJ. Chemical signatures of surface microheterogeneity on liquid mixtures. J Chem Phys 2019; 150:024702. [PMID: 30646725 DOI: 10.1063/1.5055684] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Many chemical reactions in Nature, the laboratory, and chemical industry occur in solvent mixtures that bring together species of dissimilar solubilities. Solvent mixtures are visually homogeneous, but are not randomly mixed at the molecular scale. In the all-important binary water-hydrotrope mixtures, small-angle neutron and dynamic light scattering experiments reveal the existence of short-lived (<50 ps), short-ranged (∼1 nm) concentration fluctuations. The presence of hydrophobic solutes stabilizes and extends such fluctuations into persistent, mesoscopic (10-100 nm) inhomogeneities. While the existence of inhomogeneities is well established, their impacts on reactivity are not fully understood. Here, we search for chemical signatures of inhomogeneities on the surfaces of W:X mixtures (W = water; X = acetonitrile, tetrahydrofuran, or 1,4-dioxane) by studying the reactions of Criegee intermediates (CIs) generated in situ from O3(g) addition to a hydrophobic olefin (OL) solute. Once formed, CIs isomerize to functionalized carboxylic acids (FC) or add water to produce α-hydroxy-hydroperoxides (HH), as detected by surface-specific, online pneumatic ionization mass spectrometry. Since only the formation of HH requires the presence of water, the dependence of the R = HH/FC ratio on water molar fraction x w expresses the accessibility of water to CIs on the surfaces of mixtures. The finding that R increases quasi-exponentially with x w in all solvent mixtures is consistent with CIs being preferentially produced (from their OL hydrophobic precursor) in X-rich, long-lived OL:X m W n interfacial clusters, rather than randomly dispersed on W:X surfaces. R vs x w dependences therefore reflect the average ⟨m, n⟩ composition of OL:X m W n interfacial clusters, as weighted by cluster reorganization dynamics. Water in large, rigid clusters could be less accessible to CIs than in smaller but more flexible clusters of lower water content. Since mesoscale inhomogeneities are intrinsic to most solvent mixtures, these phenomena should be quite general.
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Affiliation(s)
- Shinichi Enami
- National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba 305-8506, Japan
| | - Shinnosuke Ishizuka
- National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba 305-8506, Japan
| | - Agustín J Colussi
- Linde Center for Global Environmental Science, California Institute of Technology, Pasadena, California 91125, USA
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8
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Koga Y. The second and higher order derivative thermodynamic quantities and fluctuation functions. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.11.120] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Troncoso J, Zemánková K, Jover A. Dynamic light scattering study of aggregation in aqueous solutions of five amphiphiles. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.06.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Spectra of excess molar absorptivity of aqueous solutions of ionic liquids: Universal chromophores for aqueous electrolytes? J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.05.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Nitta A, Morita T, Nishikawa K, Koga Y. Mixing scheme of an aqueous solution of tetrabutylphosphonium trifluoroacetate in the water-rich region. Phys Chem Chem Phys 2017. [DOI: 10.1039/c7cp02997g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The enthalpic interaction of this particular ionic liquid is extremely high, 16 000 kJ mol−1!
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Affiliation(s)
- Ayako Nitta
- Division of Nano Science
- Graduate School of Advanced Integration Science
- Chiba University
- Chiba 263-8522
- Japan
| | - Takeshi Morita
- Division of Nano Science
- Graduate School of Advanced Integration Science
- Chiba University
- Chiba 263-8522
- Japan
| | - Keiko Nishikawa
- Division of Nano Science
- Graduate School of Advanced Integration Science
- Chiba University
- Chiba 263-8522
- Japan
| | - Yoshikata Koga
- Department of Chemistry
- The University of British Columbia
- Vancouver
- Canada
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12
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Koga Y, Miki K, Nishikawa K. Effects of H + and OH − on H 2O as probed by the 1-propanol probing methodology: differential thermodynamic approach. Phys Chem Chem Phys 2017; 19:27413-27420. [DOI: 10.1039/c7cp05519f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two-dimensional characterization map of H+ and OH−, together with other ions.
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Affiliation(s)
- Yoshikata Koga
- Department of Chemistry
- The University of British Columbia
- Vancouver, BC
- V6T 1Z1, Canada, and Suitekijuku
- Vancouver
| | - Kumiko Miki
- Department of Liberal Arts and Basic Sciences
- College of Industrial Technology
- Nihon University
- Narashino
- Japan
| | - Keiko Nishikawa
- Graduate School of Advanced Integration Science, Chiba University
- Chiba 263-8522
- Japan
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13
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Ohgi H, Imamura H, Yonenaga K, Morita T, Nishikawa K, Westh P, Koga Y. The effect of 2,2,2-trifluoroethanol on water studied by using third derivatives of Gibbs energy, G. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.09.101] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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15
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Zemánková K, Troncoso J, Cerdeiriña CA, Romaní L, Anisimov MA. Hydrophobicity and thermodynamic response for aqueous solutions of amphiphiles. Chem Phys 2016. [DOI: 10.1016/j.chemphys.2016.02.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Excess Partial Molar Absorptivity of Aqueous Solutions of KCl, KBr, CsCl and CsBr: Are There Three Universal Chromophores in the Excess Molar Absorptivity of the ν 2 + ν 3 Band of H2O for Aqueous Salt Solutions? J SOLUTION CHEM 2015. [DOI: 10.1007/s10953-015-0376-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Koga Y. Two-dimensional characterization of the effect of solute on H2O: A thermodynamic probing methodology. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2014.09.048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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18
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Yoshida K, Westh P, Inaba A, Nakano M, Koga Y. Third derivative thermodynamic quantities of aqueous tetrahydrofuran at 25°C. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2014.11.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Morita T, Miki K, Nitta A, Ohgi H, Westh P. Effects of constituent ions of a phosphonium-based ionic liquid on molecular organization of H2O as probed by 1-propanol: tetrabutylphosphonium and trifluoroacetate ions. Phys Chem Chem Phys 2015; 17:22170-8. [DOI: 10.1039/c5cp02329g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The phosphonium-based cation, [P4444]+, is significant amphiphile with strong hydrophobic and equally strong hydrophilic contributions.
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Affiliation(s)
- Takeshi Morita
- Graduate School of Advanced Integration Science
- Chiba University
- Chiba 263-8522
- Japan
| | - Kumiko Miki
- Department of Liberal Arts and Basic Sciences
- College of Industrial Technology
- Nihon University
- Narashino
- Japan
| | - Ayako Nitta
- Graduate School of Advanced Integration Science
- Chiba University
- Chiba 263-8522
- Japan
| | - Hiroyo Ohgi
- Graduate School of Advanced Integration Science
- Chiba University
- Chiba 263-8522
- Japan
| | - Peter Westh
- NSM Research for Functional Biomaterials
- Roskilde University
- Roskilde DK-4000
- Denmark
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20
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Colussi F, Sørensen TH, Alasepp K, Kari J, Cruys-Bagger N, Windahl MS, Olsen JP, Borch K, Westh P. Probing substrate interactions in the active tunnel of a catalytically deficient cellobiohydrolase (Cel7). J Biol Chem 2014; 290:2444-54. [PMID: 25477511 DOI: 10.1074/jbc.m114.624163] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Cellobiohydrolases break down cellulose sequentially by sliding along the crystal surface with a single cellulose strand threaded through the catalytic tunnel of the enzyme. This so-called processive mechanism relies on a complex pattern of enzyme-substrate interactions, which need to be addressed in molecular descriptions of processivity and its driving forces. Here, we have used titration calorimetry to study interactions of cellooligosaccharides (COS) and a catalytically deficient variant (E212Q) of the enzyme Cel7A from Trichoderma reesei. This enzyme has ∼10 glucopyranose subsites in the catalytic tunnel, and using COS ligands with a degree of polymerization (DP) from 2 to 8, different regions of the tunnel could be probed. For COS ligands with a DP of 2-3 the binding constants were around 10(5) m(-1), and for longer ligands (DP 5-8) this value was ∼10(7) m(-1). Within each of these groups we did not find increased affinity as the ligands got longer and potentially filled more subsites. On the contrary, we found a small but consistent affinity loss as DP rose from 6 to 8, particularly at the higher investigated temperatures. Other thermodynamic functions (ΔH, ΔS, and ΔCp) decreased monotonously with both temperature and DP. Combined interpretation of these thermodynamic results and previously published structural data allowed assessment of an affinity profile along the length axis of the active tunnel.
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Affiliation(s)
- Francieli Colussi
- From the Roskilde University, NSM, Research Unit for Functional Biomaterials, 1 Universitetsvej, Building 28, DK-4000 Denmark and
| | - Trine H Sørensen
- From the Roskilde University, NSM, Research Unit for Functional Biomaterials, 1 Universitetsvej, Building 28, DK-4000 Denmark and
| | - Kadri Alasepp
- From the Roskilde University, NSM, Research Unit for Functional Biomaterials, 1 Universitetsvej, Building 28, DK-4000 Denmark and
| | - Jeppe Kari
- From the Roskilde University, NSM, Research Unit for Functional Biomaterials, 1 Universitetsvej, Building 28, DK-4000 Denmark and
| | - Nicolaj Cruys-Bagger
- From the Roskilde University, NSM, Research Unit for Functional Biomaterials, 1 Universitetsvej, Building 28, DK-4000 Denmark and
| | - Michael S Windahl
- From the Roskilde University, NSM, Research Unit for Functional Biomaterials, 1 Universitetsvej, Building 28, DK-4000 Denmark and Novozymes A/S, Krogshøjvej 36, DK-2880, Bagsværd, Denmark
| | - Johan P Olsen
- From the Roskilde University, NSM, Research Unit for Functional Biomaterials, 1 Universitetsvej, Building 28, DK-4000 Denmark and
| | - Kim Borch
- Novozymes A/S, Krogshøjvej 36, DK-2880, Bagsværd, Denmark
| | - Peter Westh
- From the Roskilde University, NSM, Research Unit for Functional Biomaterials, 1 Universitetsvej, Building 28, DK-4000 Denmark and
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21
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Morita T, Nitta A, Nishikawa K, Westh P, Koga Y. Characterization of BF4− in terms of its effect on water by the 1-propanol probing methodology. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2014.06.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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22
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Morita T, Westh P, Nishikawa K, Koga Y. How Much Weaker Are the Effects of Cations than Those of Anions? The Effects of K+ and Cs+ on the Molecular Organization of Liquid H2O. J Phys Chem B 2014; 118:8744-9. [DOI: 10.1021/jp504245c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takeshi Morita
- Graduate
School of Advanced Integration Science, Chiba University, Chiba 263-8522, Japan
| | - Peter Westh
- NSM,
Research Unit for Functional Biomaterials, Roskilde University, Roskilde DK4000, Denmark
| | - Keiko Nishikawa
- Graduate
School of Advanced Integration Science, Chiba University, Chiba 263-8522, Japan
| | - Yoshikata Koga
- Department
of Chemistry, The University of British Columbia, Vancouver V6T 1Z1, Canada
- Suitekijuku, Vancouver V6R 2P5, Canada
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23
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Enami S, Colussi AJ. Ion-Specific Long-Range Correlations on Interfacial Water Driven by Hydrogen Bond Fluctuations. J Phys Chem B 2014; 118:1861-6. [DOI: 10.1021/jp411385u] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shinichi Enami
- The Hakubi
Center for Advanced Research, Kyoto University, Kyoto 606-8302, Japan
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji 611-0011, Japan
- PRESTO, Japan Science and Technology Agency, Kawaguchi 332-0012, Japan
| | - Agustín J. Colussi
- Linde Center for Global Environmental
Science, California Institute of Technology, Pasadena, California 91125, United States
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24
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Koga Y, Westh P. Effects of some salts on H2O as probed by a thermodynamic signature of glycerol: towards understanding the Hofmeister effects (VII). Phys Chem Chem Phys 2014; 16:335-44. [DOI: 10.1039/c3cp53474j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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