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Malik R, Das B, Chandra A. Theoretical Two Dimensional Infrared Spectroscopy of Aqueous Solutions of tert-Butyl Alcohol: Variation of the Dynamics of Spectral Diffusion along the Percolation Transition. J Phys Chem B 2023; 127:4099-4111. [PMID: 37126459 DOI: 10.1021/acs.jpcb.2c08916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Binary mixtures of water and tert-butyl alcohol (TBA) are known to exhibit the so-called percolation transition where small clusters of TBA molecules span into large aggregates beyond a threshold concentration of the alcohol. In the present study, we have investigated the linear and two-dimensional infrared spectral features of aqueous solutions of TBA for varying concentration of the alcohol along the percolation transition. The percolation transition is characterized through calculations of intermolecular radial distribution functions and average size of the largest cluster of TBA molecules. It is found that, with variation of alcohol concentration, the radial distribution functions of the central carbon atoms of TBA molecules show a nonmonotonic change in the height of the first peak and also the size of the largest cluster of TBA molecules show a jump in the increase of its size for TBA mole fraction between 0.04 and 0.06 corresponding to a transition from smaller clusters to larger spanning aggregates. However, it is found that the linear infrared spectrum of water does not exhibit any noticeable changes on variation of TBA concentration along the percolation transition. Subsequently, two-dimensional infrared (2DIR) spectra and vibrational frequency time correlation function of water are calculated for all the TBA-water solutions considered in this study. The spectral diffusion of water calculated from 2DIR is found to slow down with increase of the TBA concentration. The time scales of spectral diffusion of water, as characterized by the relaxation of frequency time correlation function, 2DIR metric of central line slope, and also the hydrogen bond time correlation functions, are found to exhibit a noticeable jump along the percolation transition. The hydrophilic group of TBA is found to retard the water dynamics more effectively than the hydrophobic groups. Also, the jump in the dynamical slowdown along the percolation transition is found to be more significant for water molecules at the hydrophilic sites.
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Affiliation(s)
- Ravi Malik
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Banshi Das
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Amalendu Chandra
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
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Banik D, Bhattacharya S, Datta PK, Sarkar N. Anomalous Dynamics in tert-Butyl Alcohol-Water and Trimethylamine N-Oxide-Water Binary Mixtures: A Femtosecond Transient Absorption Study. ACS OMEGA 2018; 3:383-392. [PMID: 31457899 PMCID: PMC6641418 DOI: 10.1021/acsomega.7b01595] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 12/27/2017] [Indexed: 05/17/2023]
Abstract
In this article, we have investigated the unusual dynamics of tert-butyl alcohol (TBA)-water and trimethylamine N-oxide (TMAO)-water binary mixtures using solvation dynamics as a tool. For this purpose, femtosecond transient absorption spectroscopy has been employed. Although these two molecules are isosteres to each other, a significant difference in water dynamics has been observed. The solvation times in TBA-water binary mixtures are found to be between 1.5 and 15.5 ps. On the contrary, we have observed very fast dynamics in TMAO-water binary mixtures (between 210 and 600 fs). Interestingly, unusual retardation in dynamics is observed at 0.10 mole fraction of TBA and TMAO in both the binary mixtures.
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Affiliation(s)
- Debasis Banik
- Department
of Chemistry and Department of Physics, Indian Institute
of Technology, Kharagpur 721302, West Bengal, India
| | - Sayantan Bhattacharya
- Department
of Chemistry and Department of Physics, Indian Institute
of Technology, Kharagpur 721302, West Bengal, India
| | - Prasanta Kumar Datta
- Department
of Chemistry and Department of Physics, Indian Institute
of Technology, Kharagpur 721302, West Bengal, India
- E-mail: (P.K.D.)
| | - Nilmoni Sarkar
- Department
of Chemistry and Department of Physics, Indian Institute
of Technology, Kharagpur 721302, West Bengal, India
- E-mail: . Phone: +91-3222-283332. Fax: 91-3222-255303 (N.S.)
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Vera C, Guerrero C, Wilson L, Illanes A. Synthesis of propyl-β-d-galactoside with free and immobilized β-galactosidase from Aspergillus oryzae. Process Biochem 2017. [DOI: 10.1016/j.procbio.2016.11.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Affiliation(s)
- Sandip Paul
- Department of Chemistry, Indian Institute of Technology, Guwahati, India
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Hunger J, Tielrooij KJ, Buchner R, Bonn M, Bakker HJ. Complex Formation in Aqueous Trimethylamine-N-oxide (TMAO) Solutions. J Phys Chem B 2012; 116:4783-95. [DOI: 10.1021/jp212542q] [Citation(s) in RCA: 115] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Johannes Hunger
- FOM Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz,
Germany
| | | | - Richard Buchner
- Institut für
Physikalische
und Theoretische Chemie, Universität Regensburg, 93040 Regensburg, Germany
| | - Mischa Bonn
- FOM Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz,
Germany
| | - Huib J. Bakker
- FOM Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
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Mazur K, Heisler IA, Meech SR. Aqueous solvation of amphiphilic solutes: concentration and temperature dependent study of the ultrafast polarisability relaxation dynamics. Phys Chem Chem Phys 2012; 14:6343-51. [DOI: 10.1039/c2cp23806c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Paul S, Patey GN. Why tert-Butyl Alcohol Associates in Aqueous Solution but Trimethylamine-N-oxide Does Not. J Phys Chem B 2006; 110:10514-8. [PMID: 16722761 DOI: 10.1021/jp0609378] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In dilute aqueous solution, tert-butyl alcohol (TBA) tends to aggregate but trimethylamine-N-oxide (TMAO) does not. Given that both molecules have very similar geometry with hydrophobic and hydrophilic groups, it is interesting to ask why they behave so differently in aqueous solution. To explore this question, we use molecular dynamics simulations to study two models representing TBA and TMAO that differ essentially only in their electrostatic properties. It is shown that this difference is sufficient to give the different solution behavior. Furthermore, the principal difference identified is that the hydrophilic group of TMAO (the oxygen) interacts on average much more strongly with water than the corresponding group (the hydroxyl) of TBA. A hydrogen-bond analysis shows that water-TBA and water-TMAO hydrogen bonds are similar in number, but that the hydrogen-bond energy is much more negative for water-TMAO. In all likelihood, this accounts for the different behavior in dilute aqueous solution.
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Affiliation(s)
- Sandip Paul
- Department of Chemistry, University of British Columbia, Vancouver BC V6T 1Z1, Canada
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Cordone L, Cottone G, Giuffrida S, Palazzo G, Venturoli G, Viappiani C. Internal dynamics and protein–matrix coupling in trehalose-coated proteins. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2005; 1749:252-81. [PMID: 15886079 DOI: 10.1016/j.bbapap.2005.03.004] [Citation(s) in RCA: 103] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2004] [Revised: 03/04/2005] [Accepted: 03/04/2005] [Indexed: 11/23/2022]
Abstract
We review recent studies on the role played by non-liquid, water-containing matrices on the dynamics and structure of embedded proteins. Two proteins were studied, in water-trehalose matrices: a water-soluble protein (carboxy derivative of horse heart myoglobin) and a membrane protein (reaction centre from Rhodobacter sphaeroides). Several experimental techniques were used: Mossbauer spectroscopy, elastic neutron scattering, FTIR spectroscopy, CO recombination after flash photolysis in carboxy-myoglobin, kinetic optical absorption spectroscopy following pulsed and continuous photoexcitation in Q(B) containing or Q(B) deprived reaction centre from R. sphaeroides. Experimental results, together with the outcome of molecular dynamics simulations, concurred to give a picture of how water-containing matrices control the internal dynamics of the embedded proteins. This occurs, in particular, via the formation of hydrogen bond networks that anchor the protein surface to the surrounding matrix, whose stiffness increases by lowering the sample water content. In the conclusion section, we also briefly speculate on how the protein-matrix interactions observed in our samples may shed light on the protein-solvent coupling also in liquid aqueous solutions.
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Affiliation(s)
- Lorenzo Cordone
- Dipartimento di Scienze Fisiche ed Astronomiche, Università di Palermo, Italy.
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Conformational and functional properties of haemoglobin in perturbed solvent: Relevance of electrostatic and hydrophobic interactions. J Mol Liq 1989. [DOI: 10.1016/0167-7322(89)80035-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Cordone L, Cupane A, Vitrano E. Effects of organic co-solvents on the oxygen equilibrium of N-ethylmaleimide-treated human haemoglobin. J Mol Biol 1986; 189:353-9. [PMID: 3746911 DOI: 10.1016/0022-2836(86)90515-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We have studied the effects of monohydric alcohols and formamide on the oxygen equilibrium of native and N-ethylmaleimide-treated human haemoglobin. Comparison of the results obtained for the two haemoglobins gives further and compelling evidence in favour of the model, proposed recently by our group, on the role played by the solvent in the conformational equilibria of haemoglobin; moreover the results provide direct functional evidence of the relevance of the electrostatic free energy of salt bridges to the T in equilibrium with R equilibrium of haemoglobin.
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Cordone L, Cupane A, Fornili SL. Conformational and functional properties of hemoglobin in perturbed solvent: kinetics of O2 release. Biopolymers 1983; 22:1677-96. [PMID: 6882870 DOI: 10.1002/bip.360220706] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Giordano R, Wanderlingh F, Cordone L, Cupane A. Effect of monohydric alcohols on structural properties of macromolecular solutions. ACTA ACUST UNITED AC 1983. [DOI: 10.1007/bf02451229] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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MacDonald VW, Charache S. Comparison of the effects of lower monohydric alcohols and inositol hexaphosphate on the oxidation of hemoglobin by menadione. BIOCHIMICA ET BIOPHYSICA ACTA 1982; 705:48-54. [PMID: 7115731 DOI: 10.1016/0167-4838(82)90334-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Analyses of optical absorption spectra show that the lower monohydric alcohols (methanol, ethanol, 1- and 2-propanol and 1-butanol) exert two distinct effects upon the oxidation of oxyhemoglobin by menadione. As chain length increases from one to three carbons, the rate of oxidation decreases. In contrast, as chain length increases, hemichrome production is enhanced along with the tendency for the oxidized hemoglobin to precipitate. Inositol hexaphosphate, which shifts the hemoglobin-oxygen dissociation curve far to the right, also increases the rate of oxidation. However, the ability of methanol and ethanol to alter oxidation rates is greater than that of IHP, and does nor correlate with their effect on oxygen affinity. The effect of these alcohols on rate of oxidation appears related primarily to their capacity for direct binding to the ferric iron-heme complex as it forms. Increased hemichrome formation, in higher alcohols, and subsequent precipitation, is primarily a solvent effect associated with increasing hydrophobicity. Menadione-induced oxidation may require deoxyhemoglobin in the presence of a small amount of oxygen in order to proceed.
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Cupane A, Giacomazza D, Cordone L. Kinetics of thermal denaturation of met-hemoglobin in perturbed solvent: relevance of bulk-electrostatic and hydrophobic interactions. Biopolymers 1982; 21:1081-92. [PMID: 7093434 DOI: 10.1002/bip.360210606] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Cordone L, Cupane A, San Biagio PL, Vitrano E. Temperature dependence of the effects of some monohydric alcohols on the oxygen affinity of hemoglobin: determination and analysis of thermodynamic parameters. Biopolymers 1981; 20:53-63. [PMID: 7470588 DOI: 10.1002/bip.1981.360200105] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Cordone L, Cupane A, San Biagio PL, Vitrano E. Effect of some monohydric alcohols on the oxygen affinity of hemoglobin: relevance of solvent dielectric constant and hydrophobicity. Biopolymers 1979; 18:1975-88. [PMID: 497351 DOI: 10.1002/bip.1979.360180811] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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