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Garg M, Sharma D, Kaur G, Rawat J, Goyal B, Kumar S, Kumar R. Factor defining the effects of tetraalkylammonium chloride on stability, folding, and dynamics of horse cytochrome c. Int J Biol Macromol 2024; 276:133713. [PMID: 38986993 DOI: 10.1016/j.ijbiomac.2024.133713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 07/04/2024] [Accepted: 07/05/2024] [Indexed: 07/12/2024]
Abstract
This article describes the molecular mechanism by which tetraalkylammonium chloride ([R4N]Cl: R- = methyl (Me), ethyl (Et), propyl (Pr),butyl (Bu)) modulates the stability, folding, and dynamics of cytochrome c (Cyt c). Analysis of [R4N]Cl effects on thermal/chemical denaturations, millisecond refolding/unfolding kinetics, and slow CO-association kinetics of Cyt c without and with denaturant providing some significant results: (i) [R4N]Cl decreasing the unfolding free energy estimated by thermodynamic and kinetic analysis of thermal/chemical denaturation curves and kinetic chevrons (Log kobs-[GdmCl]) of Cyt c, respectively (ii) hydrophobicity of R-group of [R4N]Cl, preferential inclusion of [R4N]Cl at the protein surface, and destabilizing enthalpic attractive interactions of [Me4N]Cl and steric entropic interactions of [Et4N]Cl,[Pr4N]Cl and [Bu4N]Cl with protein contribute to [R4N]Cl-induced decrease thermodynamic stability of Cyt c (iii) [R4N]Cl exhibits an additive effect with denaturant to decrease thermodynamic stability and refolding rates of Cyt c (iv) low concentrations of [R4N]Cl (≤ 0.5 M) constrain the motional dynamics while the higher concentrations (>0.75 M [R4N]Cl) enhance the structural-fluctuations that denture protein (v) hydrophobicity of R-group of [R4N]Cl alters the [denaturant]-dependent conformational stability, refolding-unfolding kinetics, and CO-association kinetics of Cyt c. Furthermore, the MD simulations depicted that the addition of 1.0 M of [R4N]Cl increased the conformational fluctuations in Cyt c leading to decreased structural stability in the order [Me4N]Cl < [Et4N]Cl < [Pr4N]Cl < [Bu4N]Cl consistent with the experimental results.
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Affiliation(s)
- Mansi Garg
- Department of Chemistry, Central University of Punjab, Bathinda 151001, India
| | - Deepak Sharma
- Council of Scientific and Industrial Research-Institute of Microbial Technology, Sector 39A, Academy of Scientific & Innovative Research, Chandigarh, India
| | - Gurmeet Kaur
- Department of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala 147004, India
| | - Jayanti Rawat
- Department of Chemistry, Central University of Punjab, Bathinda 151001, India
| | - Bhupesh Goyal
- Department of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala 147004, India
| | - Sumit Kumar
- Department of Chemistry, Central University of Punjab, Bathinda 151001, India
| | - Rajesh Kumar
- Department of Chemistry, Central University of Punjab, Bathinda 151001, India.
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2
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Volmer J, Cerajewski U, Alfes M, Bender J, Abert J, Schmidt C, Ott M, Hinderberger D. Aqueous Ionic Liquid Mixtures as Minimal Models of Lipid Bilayer Membranes. ACS Biomater Sci Eng 2024; 10:4802-4811. [PMID: 39066733 PMCID: PMC11322907 DOI: 10.1021/acsbiomaterials.4c00740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 07/18/2024] [Accepted: 07/19/2024] [Indexed: 07/30/2024]
Abstract
We introduce aqueous ionic liquid (IL) mixtures, specifically mixtures of 1-butyl-3-imidazoliumtetrafluoroborate (BMImBF4), with water as a minimal model of lipid bilayer membranes. Imidazolium-based ILs are known to form clustered nanoscale structures in which local inhomogeneities, micellar or lamellar structures, are formed to shield hydrophobic parts of the cation from the polar cosolvent (water). To investigate these nanostructures, dynamic light scattering (DLS) on samples with different mixing ratios of water and BMImBF4 was performed. At mixing ratios of 50% and 45% (v/v), small and homogeneous nanostructures can indeed be detected. To test whether, in particular, these stable nanostructures in aqueous mixtures may mimic the effects of phospholipid bilayer membranes, we further investigated their interaction with myelin basic protein (MBP), a peripheral, intrinsically disordered membrane protein of the myelin sheath. Using dynamic light scattering (DLS), continuous wave (CW) and pulse electron paramagnetic resonance (EPR), and small-angle X-ray scattering (SAXS) on recombinantly produced, "healthy" charge variants rmC1WT and double cysteine variant C1S17CH85C, we find that the size and the shape of the determined nanostructures in an optimum mixture offer model membranes in which the protein exhibits native behavior. SAXS measurements illuminate the size and shape of the nanostructures and indicate IL-rich "beads" clipped together by functional MBP, one of the in vivo roles of the protein in the myelin sheath. All the gathered data combined indicate that the 50% and 45% aqueous IL mixtures can be described as offering minimal models of a lipid mono- or bilayer that allow native processing and potential study of at least peripheral membrane proteins like MBP.
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Affiliation(s)
- Jonas Volmer
- Martin
Luther University Halle-Wittenberg, Institute of Chemistry, Physical
Chemistry − Complex Self-Organizing Systems, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany
| | - Ulrike Cerajewski
- Martin
Luther University Halle-Wittenberg, Institute of Chemistry, Physical
Chemistry − Complex Self-Organizing Systems, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany
| | - Marie Alfes
- Interdisciplinary
Research Centre HALOmem, Institute of Biochemistry and Biotechnology,
Charles Tanford Protein Centre, Martin Luther
University Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
| | - Julian Bender
- Interdisciplinary
Research Centre HALOmem, Institute of Biochemistry and Biotechnology,
Charles Tanford Protein Centre, Martin Luther
University Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
| | - Josefin Abert
- Martin
Luther University Halle-Wittenberg, Institute of Chemistry, Physical
Chemistry − Complex Self-Organizing Systems, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany
| | - Carla Schmidt
- Interdisciplinary
Research Centre HALOmem, Institute of Biochemistry and Biotechnology,
Charles Tanford Protein Centre, Martin Luther
University Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
- Department
of Chemistry − Biochemistry, Johannes Gutenberg University
Mainz, Biocenter II, Hanns-Dieter-Hüsch-Weg 17, 55128 Mainz, Germany
| | - Maria Ott
- Martin
Luther University Halle-Wittenberg, Institute of Biochemistry and
Biotechnology, Protein Biochemistry, Kurt-Mothes-Str. 3, 06120 Halle (Saale), Germany
| | - Dariush Hinderberger
- Martin
Luther University Halle-Wittenberg, Institute of Chemistry, Physical
Chemistry − Complex Self-Organizing Systems, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany
- Interdisciplinary
Research Centre HALOmem, Institute of Biochemistry and Biotechnology,
Charles Tanford Protein Centre, Martin Luther
University Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle, Germany
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3
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Egorova KS, Kibardin AV, Posvyatenko AV, Ananikov VP. Mechanisms of Biological Effects of Ionic Liquids: From Single Cells to Multicellular Organisms. Chem Rev 2024; 124:4679-4733. [PMID: 38621413 DOI: 10.1021/acs.chemrev.3c00420] [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: 04/17/2024]
Abstract
The review presents a detailed discussion of the evolving field studying interactions between ionic liquids (ILs) and biological systems. Originating from molten salt electrolytes to present multiapplication substances, ILs have found usage across various fields due to their exceptional physicochemical properties, including excellent tunability. However, their interactions with biological systems and potential influence on living organisms remain largely unexplored. This review examines the cytotoxic effects of ILs on cell cultures, biomolecules, and vertebrate and invertebrate organisms. Our understanding of IL toxicity, while growing in recent years, is yet nascent. The established findings include correlations between harmful effects of ILs and their ability to disturb cellular membranes, their potential to trigger oxidative stress in cells, and their ability to cause cell death via apoptosis. Future research directions proposed in the review include studying the distribution of various ILs within cellular compartments and organelles, investigating metabolic transformations of ILs in cells and organisms, detailed analysis of IL effects on proteins involved in oxidative stress and apoptosis, correlation studies between IL doses, exposure times and resulting adverse effects, and examination of effects of subtoxic concentrations of ILs on various biological objects. This review aims to serve as a critical analysis of the current body of knowledge on IL-related toxicity mechanisms. Furthermore, it can guide researchers toward the design of less toxic ILs and the informed use of ILs in drug development and medicine.
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Affiliation(s)
- Ksenia S Egorova
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Alexey V Kibardin
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Ministry of Health of Russian Federation, Moscow 117198, Russia
| | - Alexandra V Posvyatenko
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Ministry of Health of Russian Federation, Moscow 117198, Russia
| | - Valentine P Ananikov
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
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4
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Argitekin E, Ersoz-Gulseven E, Cakan-Akdogan G, Akdogan Y. Dopamine-Conjugated Bovine Serum Albumin Nanoparticles Containing pH-Responsive Catechol-V(III) Coordination for In Vitro and In Vivo Drug Delivery. Biomacromolecules 2023; 24:3603-3618. [PMID: 37450837 PMCID: PMC10428161 DOI: 10.1021/acs.biomac.3c00363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/27/2023] [Indexed: 07/18/2023]
Abstract
V(III) instead of commonly used Fe(III) provided a rich tris-catechol-metal coordination at pH 7.4, which is important for slow drug release at physiological pH. Bovine serum albumin (BSA) functionalized with catechol-containing dopamine (D) and cross-linked using tris-catechol-V(III) coordination yielded pH-responsive compact D-BSA NPs (253 nm). However, conversion to bis- and/or mono-catechol-V(III) complexes in an acidic medium resulted in degradation of NPs and rapid release of doxorubicin (DOX). It was shown that D-BSA NPs entered cancerous MCF-7 cells (66%) more efficiently than non-cancerous HEK293T (33%) in 3 h. Also, DOX-loaded NPs reduced cell viability of MCF-7 by 75% and induced apoptosis in a majority of cells after 24 h. Biodegradability and lack of hemolytic activity were shown in vitro, whereas a lack of toxicity was shown in histological sections of zebrafish. Furthermore, 30% of circulating tumor cells in vasculature in 24 h were killed by DOX-loaded NPs shown with the zebrafish CTC xenograft model.
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Affiliation(s)
- Eda Argitekin
- Materials
Science and Engineering Department, Izmir
Institute of Technology, Izmir 35433, Turkey
| | | | - Gulcin Cakan-Akdogan
- Izmir
Biomedicine and Genome Center, Izmir 35340, Turkey
- Department
of Medical Biology, Faculty of Medicine, Dokuz Eylul University, Izmir 35340, Turkey
| | - Yasar Akdogan
- Materials
Science and Engineering Department, Izmir
Institute of Technology, Izmir 35433, Turkey
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5
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Darlington DS, Mahurin AN, Kapusta K, Suh E, Smith C, Jarrett E, Chism CM, Meador WE, Kelly ZC, Delcamp JH, Zhao Y, Hammer NI, Kariyawasam CS, Somarathne RP, Fitzkee NC, Tanner EEL. Selective Near-Infrared Blood Detection Driven by Ionic Liquid-Dye-Albumin Nanointeractions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:10806-10819. [PMID: 37501336 PMCID: PMC10506859 DOI: 10.1021/acs.langmuir.3c00727] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Due to its abundance in blood, a great deal of research has been undertaken to develop efficient biosensors for serum albumin and provide insight into the interactions that take place between these biosensing molecules and the protein. Near-infrared (NIR, >700 nm) organic dyes have been shown to be effective biosensors of serum albumin, but their effectiveness is diminished in whole blood. Herein, it is shown that an NIR sulfonate indolizine-donor-based squaraine dye, SO3SQ, can be strengthened as a biosensor of albumin through the addition of biocompatible ionic liquids (ILs). Specifically, the IL choline glycolate (1:1), at a concentration of 160 mM, results in the enhanced fluorescence emission ("switch-on") of the dye in the presence of blood. The origin of the fluorescence enhancement was investigated via methods, including DLS, ITC, and molecular dynamics. Further, fluorescence measurements were conducted to see the impact the dye-IL system had on the fluorescence of the tryptophan residue of human serum albumin (HSA), as well as to determine its apparent association constants in relation to albumin. Circular dichroism (CD) spectroscopy was used to provide evidence that the dye-IL system does not alter the secondary structures of albumin or DNA. Our results suggest that the enhanced fluorescence of the dye in the presence of IL and blood is due to diversification of binding sites in albumin, controlled by the interaction of the IL-dye-albumin complex.
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Affiliation(s)
- Donovan S Darlington
- Department of Chemistry and Biochemistry, The University of Mississippi, University, Mississippi 38677, United States
| | - Allison N Mahurin
- Department of Chemistry and Biochemistry, The University of Mississippi, University, Mississippi 38677, United States
| | - Karina Kapusta
- Department of Chemistry and Physics, Tougaloo College, Tougaloo, Mississippi 39174, United States
| | - Ember Suh
- Department of Chemistry and Biochemistry, The University of Mississippi, University, Mississippi 38677, United States
| | - Cameron Smith
- Department of Chemistry and Biochemistry, The University of Mississippi, University, Mississippi 38677, United States
| | - Ethan Jarrett
- Department of Chemistry and Biochemistry, The University of Mississippi, University, Mississippi 38677, United States
| | - Claylee M Chism
- Department of Chemistry and Biochemistry, The University of Mississippi, University, Mississippi 38677, United States
| | - William E Meador
- Department of Chemistry and Biochemistry, The University of Mississippi, University, Mississippi 38677, United States
| | - Zakeyia C Kelly
- Department of Chemistry and Biochemistry, The University of Mississippi, University, Mississippi 38677, United States
| | - Jared H Delcamp
- Department of Chemistry and Biochemistry, The University of Mississippi, University, Mississippi 38677, United States
- Air Force Research Laboratory, Materials and Manufacturing Directorate (RXNC), Wright-Patterson AFB, 2230 Tenth Street B655, Dayton, Ohio 45433, United States
- UES, Inc., 4401 Dayton Xenia Rd, Dayton, Ohio 45432, United States
| | - Yongfeng Zhao
- Department of Chemistry, Physics and Atmospheric Sciences, Jackson State University, Jackson, Mississippi 39217, United States
| | - Nathan I Hammer
- Department of Chemistry and Biochemistry, The University of Mississippi, University, Mississippi 38677, United States
| | - Chathuri S Kariyawasam
- Department of Chemistry, Mississippi State University, Starkville, Mississippi 39762, United States
| | - Radha P Somarathne
- Department of Chemistry, Mississippi State University, Starkville, Mississippi 39762, United States
| | - Nicholas C Fitzkee
- Department of Chemistry, Mississippi State University, Starkville, Mississippi 39762, United States
| | - Eden E L Tanner
- Department of Chemistry and Biochemistry, The University of Mississippi, University, Mississippi 38677, United States
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6
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Ravikanth Reddy R, Saha D, Pan A, Aswal VK, Mati SS, Moulik SP, Phani Kumar BVN. pH-Induced Biophysical Perspectives of Binding of Surface-Active Ionic Liquid [BMIM][OSU] with HSA and Dynamics of the Formed Complex. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:3729-3741. [PMID: 36857652 DOI: 10.1021/acs.langmuir.2c03472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The influence of pH on the human serum albumin (HSA) interaction with ionic liquid (IL)1-butyl 3-methylimidazolium octyl sulfate ([BMIM][OSU]) at its sub-micellar concentration of 5 mM (well below CMC ∼31 mM at 25 °C) in aqueous solution has been monitored employing different methods, viz., circular dichroism (CD), fluorescence, electrokinetic determination of the zeta potential (ZP), nuclear magnetic resonance (NMR), small-angle neutron scattering (SANS), and molecular docking (MD). CD analysis indicated a noticeable reduction of the α-helical content of HSA by IL at pH 3. A significant interaction of the anionic part of IL with HSA was evident from the 1H chemical shifts and saturation transfer difference (STD) NMR. A strong binding between IL and HSA was observed at pH 3 relative to pH 5, revealing the importance of electrostatic and hydrophobic interactions assessed from global binding affinities and molecular correlation times derived from STD NMR and a combined selective/nonselective spin-relaxation analysis, respectively. ZP data supported the electrostatic interaction between HSA and the anionic part of IL. The nature of IL self-diffusion with HSA was assessed from the translational self-diffusion coefficients by pulse field gradient NMR. SANS results revealed the formation of prolate ellipsoidal geometry of the IL-HSA complex. MD identified the preferential binding sites of IL to the tryptophan centers on HSA. The association of IL with HSA was supported by fluorescence measurements, in addition to the structural changes that occurred in the protein by the interaction with IL. The anionic part of IL contributed a major interaction with HSA at the pH levels of study (3, 5, 8, and 11.4); at pH > 8 (effectively 11.4), the protein also interacted weakly with the cationic component of IL.
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Affiliation(s)
- R Ravikanth Reddy
- NMR, Centre for Analysis, Testing, Evaluation & Reporting Services (CATERS), CSIR-Central Leather Research Institute, Chennai 600020, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Debasish Saha
- Solid State Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Animesh Pan
- Department of Chemical Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, Rhode Island 02881, United States
| | - Vinod Kumar Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Soumya Sundar Mati
- Department of Chemistry, Government General Degree College, Keshiary, Singur 721135, West Bengal, India
| | - Satya Priya Moulik
- Centre for Surface Science, Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Bandaru V N Phani Kumar
- NMR, Centre for Analysis, Testing, Evaluation & Reporting Services (CATERS), CSIR-Central Leather Research Institute, Chennai 600020, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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7
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Saraswat J, Kumar S, Alzahrani KA, Malik MA, Patel R. Experimental and Computational Characterisation of the Molecular Interactions between 1‐Butyl‐1‐methyl‐pyrrolidin‐1‐ium bis(trifluoromethanesulphonyl)imide and Human Serum Albumin. ChemistrySelect 2023. [DOI: 10.1002/slct.202204159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Juhi Saraswat
- Biophysical Chemistry Laboratory Centre for Interdisciplinary Research in Basic Sciences Jamia Millia Islamia New Delhi 110025 India
| | - Shiv Kumar
- Department of Chemistry Kalindi College University of Delhi New Delhi 110008 India
| | - Khalid Ahmed Alzahrani
- Chemistry Department Faculty of Science King Abdulaziz University P.O. Box 80203 Jeddah 21589 Saudi Arabia
| | - Maqsood Ahmad Malik
- Chemistry Department Faculty of Science King Abdulaziz University P.O. Box 80203 Jeddah 21589 Saudi Arabia
| | - Rajan Patel
- Biophysical Chemistry Laboratory Centre for Interdisciplinary Research in Basic Sciences Jamia Millia Islamia New Delhi 110025 India
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8
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Tarver CL, Pusey ML. Effects of Ionic Liquids as Additives on Protein Crystallization. Methods Mol Biol 2023; 2652:187-197. [PMID: 37093476 DOI: 10.1007/978-1-0716-3147-8_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
Protein crystallization is a complex process, where every component and physical parameter of the crystallization process may have an effect on the outcome. Crystallization conditions are typically arrived at by a screening process, where the target is subjected to a broad array of solution conditions with the goal of obtaining at least one condition that can be carried on to a structure. Ionic liquids (IL) have been found to be useful additives for improving the outcomes of the crystallization process, with existing data indicating that the IL structure has an effect. We describe a method for quickly preparing a series of solutions that vary in just one component, in this case a series of ILs that are used as crystallization additives. The method results in a screening grid, where the crystallization conditions being tested are constant in any one column in the Y dimension and they ILs are constant in any one row in the X dimension. This provides a systematic approach to determining effective ILs for obtaining crystals from a limited set of promising starting crystallization conditions. The approach generates an X-Y array of conditions, where the basic precipitant conditions are kept constant in one plate dimension and the additives are kept constant in the second dimension, generating a 12 × 8 array of conditions. This approach would also be useful for surveying other classes of protein crystallization additives in a systematic fashion.
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Affiliation(s)
- Crissy L Tarver
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA, USA
| | - Marc L Pusey
- Department of Chemistry, University of Alabama in Huntsville, Huntsville, AL, USA.
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9
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Akdogan Y, Cigdem Sozer S, Akyol C, Basol M, Karakoyun C, Cakan-Akdogan G. Synthesis of albumin nanoparticles in a water-miscible ionic liquid system, and their applications for chlorambucil delivery to cancer cells. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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10
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Ionic liquids as protein stabilizers for biological and biomedical applications: A review. Biotechnol Adv 2022; 61:108055. [DOI: 10.1016/j.biotechadv.2022.108055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 10/13/2022] [Accepted: 10/23/2022] [Indexed: 11/22/2022]
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11
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Rani A, Sindhu A, Yao TJ, Horng JC, Venkatesu P. Profiling the impact of choline chloride on the self-assembly of collagen mimetic peptide (Pro-Hyp-Gly)10. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.06.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Sozer SC, Akdogan Y. Characterization of Water Solubility and Binding of Spin Labeled Drugs in the Presence of Albumin Nanoparticles and Proteins by Electron Paramagnetic Resonance Spectroscopy. ChemistrySelect 2022. [DOI: 10.1002/slct.202103890] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sumeyra C. Sozer
- Materials Science and Engineering Department Izmir Institute of Technology Urla Izmir Turkey
| | - Yasar Akdogan
- Materials Science and Engineering Department Izmir Institute of Technology Urla Izmir Turkey
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13
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Interaction of ionic liquids with human serum albumin in the view of bioconcentration: a preliminary study. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-021-02021-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
AbstractBioaccumulation potential is critical in PBT and risk assessment of chemicals. However, for ionic liquids (ILs), this aspect remains neglected. It is especially important to fill this gap, because for this group of compounds, existing data confirm their risk of being environmentally persistent and toxicity. Moreover, considering preliminary reports on the interactions of ILs with lipids, it may be assumed that ILs have a higher potential for bioaccumulation than indicated by previous estimations built upon octanol–water partition coefficients. Moreover, the bioconcentration of ionizable chemical compounds may also be strongly related to plasma protein contents. Therefore, in this work, the affinity of a set of imidazolium cations and organic anions, and their combination to human serum albumin (HSA) was determined. The obtained results reveal that both cations and anions can be strongly bound to HSA, and blood proteins might play an important role in overall bioaccumulation. Furthermore, it was observed that HSA binding properties towards IL cations depend on the hydrophobicity of cations. The obtained data also provide indication that cation–anion interaction may affect ILs ions affinity to HSA.
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14
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Baruah P, Ray D, Konthoujam I, Das A, Chakrabarty S, Aguan K, Mitra S. Therapeutic opportunities of surface-active ionic liquids: a case study on acetylcholinesterase, citrate synthase and HeLa cell lines. NEW J CHEM 2022. [DOI: 10.1039/d2nj04365c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
In concurrence with the pursuit of clean and green medium, recent years have witnessed an unprecedented rise in the usage of ionic liquids (ILs).
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Affiliation(s)
- Prayasee Baruah
- Centre for Advanced Studies, Department of Chemistry, North-Eastern Hill University, Shillong 793 022, India
| | - Dhiman Ray
- Centre for Advanced Studies, Department of Chemistry, North-Eastern Hill University, Shillong 793 022, India
| | - Ibemhanbi Konthoujam
- Department of Biotechnology & Bioinformatics, North-Eastern Hill University, Shillong 793 022, India
| | - Abhinandan Das
- Department of Chemical, Biological & Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Kolkata 700106, India
| | - Suman Chakrabarty
- Department of Chemical, Biological & Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Kolkata 700106, India
| | - Kripamoy Aguan
- Department of Biotechnology & Bioinformatics, North-Eastern Hill University, Shillong 793 022, India
| | - Sivaprasad Mitra
- Centre for Advanced Studies, Department of Chemistry, North-Eastern Hill University, Shillong 793 022, India
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15
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Surface Interaction of Ionic Liquids: Stabilization of Polyethylene Terephthalate-Degrading Enzymes in Solution. Molecules 2021; 27:molecules27010119. [PMID: 35011351 PMCID: PMC8746539 DOI: 10.3390/molecules27010119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/21/2021] [Accepted: 12/22/2021] [Indexed: 11/17/2022] Open
Abstract
The effect of aqueous solutions of selected ionic liquids solutions on Ideonella sakaiensis PETase with bis(2-hydroxyethyl) terephthalate (BHET) substrate were studied by means of molecular dynamics simulations in order to identify the possible effect of ionic liquids on the structure and dynamics of enzymatic Polyethylene terephthalate (PET) hydrolysis. The use of specific ionic liquids can potentially enhance the enzymatic hydrolyses of PET where these ionic liquids are known to partially dissolve PET. The aqueous solution of cholinium phosphate were found to have the smallest effect of the structure of PETase, and its interaction with (BHET) as substrate was comparable to that with the pure water. Thus, the cholinium phosphate was identified as possible candidate as ionic liquid co-solvent to study the enzymatic hydrolyses of PET.
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16
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Abstract
Among its attributes, the mythical philosopher’s stone is supposedly capable of turning base metals to gold or silver. In an analogous fashion, we are finding that protein crystallization optimization using ionic liquids (ILs) often results in the conversion of base protein precipitate to crystals. Recombinant inorganic pyrophosphatases (8 of the 11 proteins) from pathogenic bacteria as well as several other proteins were tested for optimization by 23 ILs, plus a dH2O control, at IL concentrations of 0.1, 0.2, and 0.4 M. The ILs were used as additives, and all proteins were crystallized in the presence of at least one IL. For 9 of the 11 proteins, precipitation conditions were converted to crystals with at least one IL. The ILs could be ranked in order of effectiveness, and it was found that ~83% of the precipitation-derived crystallization conditions could be obtained with a suite of just eight ILs, with the top two ILs accounting for ~50% of the hits. Structural trends were found in the effectiveness of the ILs, with shorter-alkyl-chain ILs being more effective. The two top ILs, accounting for ~50% of the unique crystallization results, were choline dihydrogen phosphate and 1-butyl-3-methylimidazolium tetrafluoroborate. Curiously, however, a butyl group was present on the cation of four of the top eight ILs.
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Affiliation(s)
- Crissy L. Tarver
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Qunying Yuan
- Department of Biological and Environmental Science, Alabama A&M University, Normal, AL 35762, USA
| | - Marc L. Pusey
- Department of Chemistry, University of Alabama in Huntsville, Huntsville, AL 35805, USA
- Correspondence: ; Tel.: +1-256-701-7214
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Slade J, Merunka D, Huerta E, Peric M. Rotation of a Charged Spin Probe in Room-Temperature Ionic Liquids. J Phys Chem B 2021; 125:7435-7446. [PMID: 34197101 DOI: 10.1021/acs.jpcb.1c02471] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
X-band electron paramagnetic resonance spectroscopy has been used to investigate the rotational diffusion of a stable, positively charged nitroxide 4-trimethylammonium-2,2,6,6-tetramethylpiperidine-1-oxyl iodide (Cat-1) in a series of 1-alkyl-3-methylimidazolium tetrafluoroborate room-temperature ionic liquids (RTILs) having alkyl chain lengths from two to eight carbons. The rotation of Cat-1 is anisotropic with the preferential axis of rotation along the NO• moiety. The Stokes-Einstein-Debye law describes the mean rotational correlation time of Cat-1, assuming that the hydrodynamic radius is smaller than the van der Waals radius of the probe. This implies that the probe rotates freely, experiencing slip boundary condition, which is solvent-dependent. The rotational correlation time of Cat-1 in RTILs can very well be fitted to a power-law functionality with a singular temperature, which suggests that the apparent activation energy of rotation exhibits non-Arrhenius behavior. Compared to the rotation of perdeuterated 2,2,6,6-tetramethyl-4-oxopiperidine-1-oxyl (pDTO), which is neutral, the rotation of Cat-1 is several times slower. The rotational anisotropy, the ratio of the rotational times of pDTO and Cat-1, and the apparent activation energy indicate the transition from a homogeneously globular structure to a spongelike structure when the alkyl chain has four carbons, which is also observed in molecular dynamics computational studies. For the first time, we have been able to show that the rotational correlation time of a solute molecule can be analyzed in terms of the Cohen-Turnbull free volume theory. The Cohen-Turnbull theory fully describes the rotation of Cat-1 in all ionic liquids in the measured temperature range.
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Affiliation(s)
- Jakov Slade
- Division of Physical Chemistry, Rud̵er Bošković Institute, Bijenička cesta 54, Zagreb HR-10000, Croatia
| | - Dalibor Merunka
- Division of Physical Chemistry, Rud̵er Bošković Institute, Bijenička cesta 54, Zagreb HR-10000, Croatia
| | - Ezequiel Huerta
- Department of Physics and Astronomy and The Center for Biological Physics, California State University, Northridge, Northridge, California 91330, United States
| | - Miroslav Peric
- Department of Physics and Astronomy and The Center for Biological Physics, California State University, Northridge, Northridge, California 91330, United States
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18
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Liu H, Jin P, Zhu F, Nie L, Qiu H. A review on the use of ionic liquids in preparation of molecularly imprinted polymers for applications in solid-phase extraction. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2020.116132] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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19
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Reddy RR, Reddy JG, Kumar BVNP. NMR investigations on binding and dynamics of imidazolium-based ionic liquids with HEWL. Phys Chem Chem Phys 2020; 22:23824-23836. [PMID: 33073278 DOI: 10.1039/d0cp04584e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Molecular level insights on protein-ionic liquid (P-IL) interactions are beneficial for assessing protein stability, binding and dynamics. In the present work, interactions of ILs, namely, 1-butyl 3-methylimidazolium methyl sulfate (IL1), 1-butyl 3-methylimidazolium octyl sulfate (IL2) and 1-butyl 3-methylimidazolium chloride (IL3) with hen egg white lysozyme (HEWL) protein were investigated using solution-state nuclear magnetic resonance (NMR) spectroscopy. To ascertain the binding and dynamics from the perspective of both protein and IL, various ligand based NMR approaches such as selective and non-selective nuclear spin-relaxation (R1SEL and R1NS), saturation transfer difference (STD), difference of inversion recovery rate with and without target irradiation (DIRECTION), 35Cl line-shape and spin-relaxation, and protein back bone amide chemical shift perturbations (CSPs) from 1H-15N HSQC were utilized. Among the ILs investigated, IL2 experiences significant interaction relative to those of IL1 and IL3, as revealed by the combined R1SEL and R1NS analysis, which is further supported by STD NMR. CSP analyses of 1H-15N HSQC spectra of aqueous P-IL mixtures enabled to identify the potential binding sites of ILs with HEWL. Whereas, 15N longitudinal (R1) and transverse (R2) spin-relaxation rates and 15N{1H} heteronuclear nuclear Overhauser effect (hetNOE) data subjected to the model free analysis for IL2 yielded the rotational correlation times and order parameters of various residues of HEWL. Furthermore, the results could discern the nature of interactions between studied ILs and HEWL in terms of specific and non-specific interactions.
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Affiliation(s)
- R Ravikanth Reddy
- NMR, Centre for Analysis, Testing, Evaluation & Reporting Services (CATERS), CSIR-Central Leather Research Institute, Chennai - 600020, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
| | - Jithender G Reddy
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India and NMR Division, Department of Analytical & Structural Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India.
| | - B V N Phani Kumar
- NMR, Centre for Analysis, Testing, Evaluation & Reporting Services (CATERS), CSIR-Central Leather Research Institute, Chennai - 600020, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
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20
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Haeri HH, Tomaszewski J, Phytides B, Schimm H, Möslein G, Niedergethmann M, Hinderberger D, Gelos M. Identification of Patients with Pancreatic Cancer by Electron Paramagnetic Resonance Spectroscopy of Fatty Acid Binding to Human Serum Albumin. ACS Pharmacol Transl Sci 2020; 3:1188-1198. [PMID: 33344896 DOI: 10.1021/acsptsci.0c00116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Indexed: 12/11/2022]
Abstract
An effective biological marker for pancreatic adenocarcinoma (PAC) is not available so far. Here, we investigate how electron paramagnetic resonance (EPR) spectroscopy of spin-labeled fatty acid (FA) molecules binding to human serum albumin (HSA) in human serum is a suitable method for the identification of patients with PAC through detection of PAC-induced changes of FA binding to albumin. The functionality of HSA to bind FA is investigated in serum samples of 35 patients with PAC, 26 patients with benign pancreatic tumors (BPD), and 24 healthy individuals by continuous wave (CW) EPR spectroscopy by simply dissolving 16-DOXYL stearic acid as spin-labeled FA. It is found that FA binding to HSA in PAC is significantly modified when compared with healthy and BPD individuals. The PAC group could best be discriminated from the healthy group based on EPR characteristics at the loading ratio of 1:4 (HSA:FA), while patients with PAC and BPD are distinguishable at a loading ratio of 1:6. Using nanoscale distance measurements through double electron-electron resonance (DEER), it is found that the distribution of FAs in the HSA of one PAC patient is similar to that of FAs in healthy individuals. Combining all EPR spectroscopic data, this leads to a tentative molecular interpretation of only small changes in hydration at the protein's surface as origin of the detectable characteristics for PAC patients. Thus, EPR of FA/HSA binding is a simple and promising tool for clinical detection of patients with PAC and needs to be tested with larger ensembles of different patient groups.
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Affiliation(s)
- Haleh H Haeri
- Institute of Chemistry, Martin Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany
| | - Jörg Tomaszewski
- Department of General and Visceral Surgery, Alfried Krupp Krankenhaus Essen, Essen, Nordrhein-Westfalen 45276, Germany
| | - Bettina Phytides
- Department of General and Visceral Surgery, Alfried Krupp Krankenhaus Essen, Essen, Nordrhein-Westfalen 45276, Germany
| | - Heike Schimm
- Institute of Chemistry, Martin Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany
| | - Gabriela Möslein
- Faculty of Health Sciences, University of Witten/Herdecke, Witten, Nordrhein-Westfalen 58448, Germany
| | - Marco Niedergethmann
- Department of General and Visceral Surgery, Alfried Krupp Krankenhaus Essen, Essen, Nordrhein-Westfalen 45276, Germany
| | - Dariush Hinderberger
- Institute of Chemistry, Martin Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany
| | - Marcos Gelos
- Faculty of Health Sciences, University of Witten/Herdecke, Witten, Nordrhein-Westfalen 58448, Germany
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21
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How does cholinium cation surpass tetraethylammonium cation in amino acid-based ionic liquids for thermal and structural stability of serum albumins? Int J Biol Macromol 2020; 148:615-626. [PMID: 31954128 DOI: 10.1016/j.ijbiomac.2020.01.135] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 01/08/2020] [Accepted: 01/14/2020] [Indexed: 12/19/2022]
Abstract
In this study, we report how similarly two serum albumins (bovine serum albumin (BSA) and human serum albumin (HSA)) respond in the presence of different concentration of aromatic amino acid based ionic liquids (AAILs), which are cholinium tryptophan [CHO][Trp]IL and tetraethylammonium tryptophan [TEA][Trp]IL. Extended results of thermodynamic stability indicate the extent to which both serum albumins differ in their thermal stability despite having structural similarity in presence of AAILs. To efficiently quantify the results, biomolecular interactions studies were carried out between serum albumins and AAILs with the help of differential scanning calorimetry (DSC), dynamic light scattering (DLS) and various spectroscopic techniques. DSC results illustrated that both AAILs are increasing the thermal stability of BSA and HSA, as per transition temperature (Tm) values, BSA (65.51 to 72.46 °C) and HSA (65.46 to 75.97 °C) have more thermal stability in the presence of [CHO][Trp]IL as compare to [TEA][Trp]IL, BSA (65.51 to 69.75 °C) and HSA (65.46 to 72.08 °C). Secondary structure results obtained using Dichroweb software and selcon calculations. Furthermore, to illustrate the specific binding of AAIL's cations or anions with the binding sites of BSA and HSA, the molecular docking studies were also performed using Molegro trail version v 6.0.
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22
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Islam MM, Barik S, Preeyanka N, Sarkar M. Interaction of Lysozyme with Monocationic and Dicationic Ionic Liquids: Toward Finding a Suitable Medium for Biomacromolecules. J Phys Chem B 2020; 124:961-973. [DOI: 10.1021/acs.jpcb.9b10270] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mullah Muhaiminul Islam
- School of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar, HBNI, Bhimpur-Padanpur,
Jatni, Khurda, Bhubaneswar 752050, Odisha, India
| | - Sahadev Barik
- School of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar, HBNI, Bhimpur-Padanpur,
Jatni, Khurda, Bhubaneswar 752050, Odisha, India
| | - Naupada Preeyanka
- School of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar, HBNI, Bhimpur-Padanpur,
Jatni, Khurda, Bhubaneswar 752050, Odisha, India
| | - Moloy Sarkar
- School of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar, HBNI, Bhimpur-Padanpur,
Jatni, Khurda, Bhubaneswar 752050, Odisha, India
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23
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Demirkurt B, Cakan-Akdogan G, Akdogan Y. Preparation of albumin nanoparticles in water-in-ionic liquid microemulsions. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111713] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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24
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Sindhu A, Mogha NK, Venkatesu P. Insight into impact of choline-based ionic liquids on bovine β-lactoglobulin structural analysis: Unexpected high thermal stability of protein. Int J Biol Macromol 2019; 126:1-10. [DOI: 10.1016/j.ijbiomac.2018.12.166] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 12/17/2018] [Accepted: 12/18/2018] [Indexed: 10/27/2022]
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25
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Singh G, Singh G, Kancharla S, Kang TS. Complexation Behavior of β-Lactoglobulin with Surface Active Ionic Liquids in Aqueous Solutions: An Experimental and Computational Approach. J Phys Chem B 2019; 123:2169-2181. [DOI: 10.1021/acs.jpcb.8b11610] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Gagandeep Singh
- Department of Chemistry, UGC-Centre for Advance Studies—II, Guru Nanak Dev University, Amritsar 143005, India
| | - Gurbir Singh
- Department of Chemistry, UGC-Centre for Advance Studies—II, Guru Nanak Dev University, Amritsar 143005, India
| | - Srinivasarao Kancharla
- Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Tejwant Singh Kang
- Department of Chemistry, UGC-Centre for Advance Studies—II, Guru Nanak Dev University, Amritsar 143005, India
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26
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Islam MM, Barik S, Sarkar M. Probing the Interactions of 1-Alkyl-3-methylimidazolium Tetrafluoroborate (Alkyl = Octyl, Hexyl, Butyl, and Ethyl) Ionic Liquids with Bovine Serum Albumin: An Alkyl Chain Length-Dependent Study. J Phys Chem B 2019; 123:1512-1526. [DOI: 10.1021/acs.jpcb.8b10795] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mullah Muhaiminul Islam
- School of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar, HBNI, Bhimpur-Padanpur,
Jatni, Khurda 752050, Odisha, India
| | - Sahadev Barik
- School of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar, HBNI, Bhimpur-Padanpur,
Jatni, Khurda 752050, Odisha, India
| | - Moloy Sarkar
- School of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar, HBNI, Bhimpur-Padanpur,
Jatni, Khurda 752050, Odisha, India
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27
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Reichenwallner J, Thomas A, Steinbach T, Eisermann J, Schmelzer CEH, Wurm F, Hinderberger D. Ligand-Binding Cooperativity Effects in Polymer–Protein Conjugation. Biomacromolecules 2019; 20:1118-1131. [DOI: 10.1021/acs.biomac.9b00016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Jörg Reichenwallner
- Institute of Chemistry, Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany
| | - Anja Thomas
- Institute of Organic Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Tobias Steinbach
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- Institute of Organic Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Jana Eisermann
- Institute of Chemistry, Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany
| | - Christian E. H. Schmelzer
- Fraunhofer Institute for Microstructure of Materials and Systems (IMWS), Walter-Hülse-Strasse 1, 06120 Halle (Saale), Germany
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Wolfgang-Langenbeck-Strasse 4, 06120 Halle (Saale), Germany
| | - Frederik Wurm
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Dariush Hinderberger
- Institute of Chemistry, Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany
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28
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Zhao Z, Zhu C, Guo Q, Cai Y, Zhu X, Li B. Preparation of lysozyme-imprinted nanoparticles on polydopamine-modified titanium dioxide using ionic liquid as a stabilizer. RSC Adv 2019; 9:14974-14981. [PMID: 35516334 PMCID: PMC9064239 DOI: 10.1039/c9ra00941h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 05/06/2019] [Indexed: 12/18/2022] Open
Abstract
Molecular imprinting of proteins has evolved into an efficient approach for protein recognition and separation. However, maintaining the structural stability of proteins during the preparation process of molecularly imprinted polymers (MIPs) remains challenging. Ionic liquids (ILs), being capable of maintaining the stability of proteins, might enable effective imprinting and accurate recognition of proteins. In this study, lysozyme (Lyz)-imprinted titanium dioxide (TiO2) nanoparticles, TiO2@Lyz-MIPs, have been successfully prepared for selective recognition and separation of Lyz. This was achieved by the free radical polymerization of hydroxyethyl acrylate (HEA) and poly(ethylene glycol) dimethacrylate (PEGDMA) on polydopamine (PDA)-modified TiO2 nanoparticles using an IL, choline dihydrogen phosphate (chol dhp), as the stabilizer of Lyz. It was found that both PDA modification of TiO2 and the use of chol dhp as stabilizer improved the adsorption capacity of TiO2@Lyz-MIPs toward Lyz. When the concentration of HEA was 7 mg mL−1, the ratio of monomer to crosslinker was 20 : 1, and the concentration of chol dhp was 12.5 mg mL−1, the highest imprinting factor of 4.40 was achieved. TiO2@Lyz-MIPs exhibited relatively high adsorption capacity with the maximum adsorption capacity up to 120 mg g−1, which was more than four times higher than that of the non-imprinted polymers (NIPs) counterpart, TiO2@Lyz-NIPs. The adsorption rate of Lyz by TiO2@Lyz-MIPs was also much higher than that of TiO2@Lyz-NIPs. TiO2@Lyz-MIPs could successfully separate Lyz from diluted egg white, a complex mixture of proteins. Findings from this study indicate that effective recognition cavities toward Lyz were formed on the surface of Lyz-imprinted TiO2 nanoparticles prepared using IL as the template stabilizer. This approach may facilitate the development of MIPs for efficient protein recognition and separation. Molecular imprinting of proteins has evolved into an efficient approach for protein recognition and separation.![]()
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Affiliation(s)
- Zhongliang Zhao
- College of Chemistry, Chemical Engineering and Materials Science
- Orthopaedic Institute
- Medical College
- Soochow University
- Suzhou
| | - Caihong Zhu
- College of Chemistry, Chemical Engineering and Materials Science
- Orthopaedic Institute
- Medical College
- Soochow University
- Suzhou
| | - Qianping Guo
- College of Chemistry, Chemical Engineering and Materials Science
- Orthopaedic Institute
- Medical College
- Soochow University
- Suzhou
| | - Yan Cai
- College of Chemistry, Chemical Engineering and Materials Science
- Orthopaedic Institute
- Medical College
- Soochow University
- Suzhou
| | - Xuesong Zhu
- College of Chemistry, Chemical Engineering and Materials Science
- Orthopaedic Institute
- Medical College
- Soochow University
- Suzhou
| | - Bin Li
- College of Chemistry, Chemical Engineering and Materials Science
- Orthopaedic Institute
- Medical College
- Soochow University
- Suzhou
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Upasham S, Tanak A, Jagannath B, Prasad S. Development of ultra-low volume, multi-bio fluid, cortisol sensing platform. Sci Rep 2018; 8:16745. [PMID: 30425312 PMCID: PMC6233171 DOI: 10.1038/s41598-018-35199-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 11/01/2018] [Indexed: 02/06/2023] Open
Abstract
The development of a non-faradaic electrochemical sensor for screening across multiple bio-fluids that demonstrate the expression of cortisol using a gold microelectrode-based sensor is reported in this paper. Room temperature ionic liquid (RTIL), BMIM[BF4] was used as the buffer to modulate the electrical double layer (EDL) to enhance the electrochemical signal response of the sensor. The sensor design and the surface chemistry was optimized using COMSOL Multiphysics software simulations and FTIR respectively. The sensor was designed so that it uses ultra-low volumes between 3-5 µL of bio-fluid for detection. Cortisol detection was achieved in the physiologically relevant ranges when tested in serum, blood, sweat, and, saliva using non-faradaic Electrochemical Impedance Spectroscopy (EIS) and performance parameters of the sensor were determined. Sensor's response was tested against the only commercially available salivary cortisol point-of-care kit using regression analysis. Cross-reactive studies using prednisone indicated that the sensor is specific for cortisol. The sensor displayed a correlation value i.e. R2 > 0.95 between the signal response and the concentration of cortisol present in the system. Dynamic range of the sensor was across the physiologically relevant range of cortisol i.e. 50-200 ng/ml for serum/blood, 1-40 ng/ml for saliva, and 10-150 ng/ml for sweat. Limit of detection for serum and sweat was 10 ng/ml and 1 ng/ml for saliva.
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Affiliation(s)
- Sayali Upasham
- Deparatment of Bioengineering, University of Texas at Dallas, Richardson, T.X-75080, USA
| | - Ambalika Tanak
- Deparatment of Bioengineering, University of Texas at Dallas, Richardson, T.X-75080, USA
| | - Badrinath Jagannath
- Deparatment of Bioengineering, University of Texas at Dallas, Richardson, T.X-75080, USA
| | - Shalini Prasad
- Deparatment of Bioengineering, University of Texas at Dallas, Richardson, T.X-75080, USA.
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30
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Exploring the pH-Induced Functional Phase Space of Human Serum Albumin by EPR Spectroscopy. MAGNETOCHEMISTRY 2018. [DOI: 10.3390/magnetochemistry4040047] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A systematic study on the self-assembled solution system of human serum albumin (HSA) and paramagnetic doxyl stearic acid (5-DSA and 16-DSA) ligands is reported covering the broad pH range 0.7–12.9, mainly using electron paramagnetic resonance (EPR) methods. It is tested to which extent the pH-induced conformational isomers of HSA reveal themselves in continuous wave (CW) EPR spectra from this spin probing approach in comparison to an established spin-labeling strategy utilizing 3-maleimido proxyl (5-MSL). Most analyses are conducted on empirical levels with robust strategies that allow for the detection of dynamic changes of ligand, as well as protein. Special emphasis has been placed on the EPR spectroscopic detection of a molten globule (MG) state of HSA that is typically found by the fluorescent probe 8-Anilino- naphthalene-1-sulfonic acid (ANS). Moreover, four-pulse double electron-electron resonance (DEER) experiments are conducted and substantiated with dynamic light scattering (DLS) data to determine changes in the solution shape of HSA with pH. All results are ultimately combined in a detailed scheme that describes the pH-induced functional phase space of HSA.
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31
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Kumar PK, Bisht M, Venkatesu P, Bahadur I, Ebenso EE. Exploring the Effect of Choline-Based Ionic Liquids on the Stability and Activity of Stem Bromelain. J Phys Chem B 2018; 122:10435-10444. [DOI: 10.1021/acs.jpcb.8b08173] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Meena Bisht
- Department of Chemistry, University of Delhi, Delhi 110007, India
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32
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Development of an Ionic Liquid Based Method for the Preparation of Albumin Nanoparticles. ChemistrySelect 2018. [DOI: 10.1002/slct.201801648] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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33
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Takekiyo T, Yoshimura Y. Suppression and dissolution of amyloid aggregates using ionic liquids. Biophys Rev 2018; 10:853-860. [PMID: 29696571 DOI: 10.1007/s12551-018-0421-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 04/08/2018] [Indexed: 12/22/2022] Open
Abstract
Amyloid aggregates are composed of protein fibrils with a dominant β-sheet structure, are water-insoluble, and are involved in the pathogenesis of many neurodegenerative diseases. Development of pharmaceuticals to treat these diseases and the design of recovery agents for amyloid-type inclusion bodies require the successful suppression and dissolution of such aggregates. Since ionic liquids (ILs) are composed of both a cation and anion and are known to suppress protein aggregation and to dissolve water-insoluble compounds such as cellulose; they may also have potential use as suppression/dissolution agents for amyloid aggregates. In the following review, we present the suppression and dissolution effects of ILs on amyloid aggregates so far reported. The protein-IL affinity (the ability of ILs to interact with amyloid proteins) was found to be the biochemical basis for ILs' suppression of amyloid formation, and the hydrogen-bonding basicity of ILs might be the basis for their ability to dissolve amyloid aggregates. These findings present the potential of ILs to serve as novel pharmaceuticals to treat neurodegenerative diseases and as recovery agents for various amyloid aggregates.
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Affiliation(s)
- Takahiro Takekiyo
- Department of Applied Chemistry, National Defense Academy, 1-10-20, Hashirimizu, Yokosuka, Kanagawa, 239-8686, Japan.
| | - Yukihiro Yoshimura
- Department of Applied Chemistry, National Defense Academy, 1-10-20, Hashirimizu, Yokosuka, Kanagawa, 239-8686, Japan
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Mukhopadhyay A, Das T, Datta A, Sharma KP. Neat Protein–Polymer Surfactant Bioconjugates as Universal Solvents. Biomacromolecules 2018; 19:943-950. [DOI: 10.1021/acs.biomac.7b01729] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anasua Mukhopadhyay
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Tarasankar Das
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Anindya Datta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Kamendra P. Sharma
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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35
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Akdogan Y, Emrullahoglu M, Tatlidil D, Ucuncu M, Cakan-Akdogan G. EPR studies of intermolecular interactions and competitive binding of drugs in a drug-BSA binding model. Phys Chem Chem Phys 2018; 18:22531-9. [PMID: 27468942 DOI: 10.1039/c6cp04137j] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Understanding intermolecular interactions between drugs and proteins is very important in drug delivery studies. Here, we studied different binding interactions between salicylic acid and bovine serum albumin (BSA) using electron paramagnetic resonance (EPR) spectroscopy. Salicylic acid was labeled with a stable radical (spin label) in order to monitor its mobilized (free) or immobilized (bound to BSA) states. In addition to spin labeled salicylic acid (SL-salicylic acid), its derivatives including SL-benzoic acid, SL-phenol, SL-benzene, SL-cyclohexane and SL-hexane were synthesized to reveal the effects of various drug binding interactions. EPR results of these SL-molecules showed that hydrophobic interaction is the main driving force. Whereas each of the two functional groups (-COOH and -OH) on the benzene ring has a minute but detectable effect on the drug-protein complex formation. In order to investigate the effect of electrostatic interaction on drug binding, cationic BSA (cBSA) was synthesized, altering the negative net charge of BSA to positive. The salicylic acid loading capacity of cBSA is significantly higher compared to that of BSA, indicating the importance of electrostatic interaction in drug binding. Moreover, the competitive binding properties of salicylic acid, ibuprofen and aspirin to BSA were studied. The combined EPR results of SL-salicylic acid/ibuprofen and SL-ibuprofen/salicylic acid showed that ibuprofen is able to replace up to ∼83% of bound SL-salicylic acid, and salicylic acid can replace only ∼14% of the bound SL-ibuprofen. This indicates that ∼97% of all salicylic acid and ibuprofen binding sites are shared. On the other hand, aspirin replaces only ∼23% of bound SL-salicylic acid, and salicylic acid replaces ∼50% of bound SL-aspirin, indicating that ∼73% of all salicylic acid and aspirin binding sites are shared. These results show that EPR spectroscopy in combination with the spin labeling technique is a very powerful method to investigate drug binding dynamics in detail.
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Affiliation(s)
- Y Akdogan
- Materials Science and Engineering Department, I[combining dot above]zmir Institute of Technology, 35430 Urla, I[combining dot above]zmir, Turkey.
| | - M Emrullahoglu
- Department of Chemistry, I[combining dot above]zmir Institute of Technology, 35430 Urla, I[combining dot above]zmir, Turkey
| | - D Tatlidil
- Materials Science and Engineering Department, I[combining dot above]zmir Institute of Technology, 35430 Urla, I[combining dot above]zmir, Turkey.
| | - M Ucuncu
- Department of Chemistry, I[combining dot above]zmir Institute of Technology, 35430 Urla, I[combining dot above]zmir, Turkey
| | - G Cakan-Akdogan
- Dokuz Eylul University, I[combining dot above]zmir Biomedicine and Genome Center, I[combining dot above]zmir, Turkey
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36
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Satpathi S, Kulkarni M, Mukherjee A, Hazra P. Ionic liquid induced G-quadruplex formation and stabilization: spectroscopic and simulation studies. Phys Chem Chem Phys 2018; 18:29740-29746. [PMID: 27766324 DOI: 10.1039/c6cp05732b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Among different polymorphs of DNA, G-quadruplex (GQ) formation in guanine rich sequences has received special attention due to its direct relevance to cellular aging and abnormal cell growths. To date, smaller ions like Na+, K+, Li+, and NH4+ are the best possible selective GQ stabilizing materials. Herein, we report that an ionic liquid (IL), i.e. guanidinium tris(pentafluoroethyl)trifluorophosphate, can not only instigate the GQ formation in the absence of conventional GQ forming ions (like Na+, K+, NH4+, etc.), but also stabilizes the GQ structure. This conformational transition has been confirmed through different spectroscopic tools and molecular dynamics (MD) simulation studies. MD simulation shows that one of the guanidinium cations resides in the G-tetrad core, while bulky anions prefer to stay near the GQ surface resulting in GQ formation and stabilization. This study thus brings out a special type of ionic liquid that acts as a GQ stabilizer. The origin of GQ stabilization by IL presented here may also help in the future design of IL for GQ formation and stabilization.
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Affiliation(s)
- Sagar Satpathi
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India.
| | - Mandar Kulkarni
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India.
| | - Arnab Mukherjee
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India.
| | - Partha Hazra
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India.
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37
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Panda S, Kundu K, Basaiahgari A, Singh AP, Senapati S, Gardas RL. Aggregation behaviour of biocompatible choline carboxylate ionic liquids and their interactions with biomolecules through experimental and theoretical investigations. NEW J CHEM 2018. [DOI: 10.1039/c8nj00336j] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The self-assembly of long-chain choline carboxylates accompanied by their interaction with BSA protein were investigated with focus on environmental sustainability.
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Affiliation(s)
- Somenath Panda
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Kaushik Kundu
- Department of Biotechnology
- Bhupat and Jyoti Mehta School of Biosciences
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Anusha Basaiahgari
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Akhil Pratap Singh
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
- Department of Biotechnology
| | - Sanjib Senapati
- Department of Biotechnology
- Bhupat and Jyoti Mehta School of Biosciences
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Ramesh L. Gardas
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
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38
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Reddy RR, Shanmugam G, Madhan B, Phani Kumar BVN. Selective binding and dynamics of imidazole alkyl sulfate ionic liquids with human serum albumin and collagen – a detailed NMR investigation. Phys Chem Chem Phys 2018; 20:9256-9268. [DOI: 10.1039/c7cp08298c] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
STD NMR and selective spin-relaxation analysis evidenced the selective binding (anionic part) of imidazole alkyl sulfate ionic liquids with proteins (HSA and collagen). These studies also enabled the ionic liquids to be ranked based on their binding affinities with the proteins of study.
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Affiliation(s)
- R. Ravikanth Reddy
- NMR
- Inorganic & Physical Chemistry Laboratory
- CSIR–Central Leather Research Institute
- Chennai-600020
- India
| | - Ganesh Shanmugam
- Academy of Scientific and Innovative Research (AcSIR)
- CSIR–CLRI Campus
- Chennai-600020
- India
- Organic & Bioorganic Chemistry Laboratory
| | - Balaraman Madhan
- Academy of Scientific and Innovative Research (AcSIR)
- CSIR–CLRI Campus
- Chennai-600020
- India
- Centre for Academic and Research Excellence (CARE)
| | - B. V. N. Phani Kumar
- NMR
- Inorganic & Physical Chemistry Laboratory
- CSIR–Central Leather Research Institute
- Chennai-600020
- India
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39
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Wang J, Yuan C, Han Y, Wang Y, Liu X, Zhang S, Yan X. Trace Water as Prominent Factor to Induce Peptide Self-Assembly: Dynamic Evolution and Governing Interactions in Ionic Liquids. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1702175. [PMID: 28976074 DOI: 10.1002/smll.201702175] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 08/12/2017] [Indexed: 05/22/2023]
Abstract
The interaction between water and biomolecules including peptides is of critical importance for forming high-level architectures and triggering life's functions. However, the bulk aqueous environment has limitations in detecting the kinetics and mechanisms of peptide self-assembly, especially relating to interactions of trace water. With ionic liquids (ILs) as a nonconventional medium, herein, it is discovered that trace amounts of water play a decisive role in triggering self-assembly of a biologically derived dipeptide. ILs provide a suitable nonaqueous environment, enabling us to mediate water content and follow the dynamic evolution of peptide self-assembly. The trace water is found to be involved in the assembly process of dipeptide, especially leading to the formation of stable noncovalent dipeptide oligomers in the early stage of nucleation, as evident by both experimental studies and theoretical simulations. The thermodynamics of the growth process is mainly governed by a synergistic effect of hydrophobic interaction and hydrogen bonds. Each step of assembly presents a different trend in thermodynamic energy. The dynamic evolution of assembly process can be efficiently mediated by changing trace water content. The decisive role of trace water in triggering and mediating self-assembly of biomolecules provides a new perspective in understanding supramolecular chemistry and molecular self-organization in biology.
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Affiliation(s)
- Juan Wang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Chengqian Yuan
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yuchun Han
- Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yilin Wang
- Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xiaomin Liu
- Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Suojiang Zhang
- Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xuehai Yan
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
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40
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Takekiyo T, Yoshida K, Funahashi Y, Nagata S, Abe H, Yamaguchi T, Yoshimura Y. Helix-forming ability of proteins in alkylammonium nitrate. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.08.066] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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41
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Maleimido-proxyl as an EPR spin label for the evaluation of conformational changes of albumin. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2017; 46:773-787. [DOI: 10.1007/s00249-017-1257-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 08/04/2017] [Accepted: 09/16/2017] [Indexed: 11/25/2022]
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42
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Smiatek J. Aqueous ionic liquids and their effects on protein structures: an overview on recent theoretical and experimental results. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:233001. [PMID: 28398214 DOI: 10.1088/1361-648x/aa6c9d] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Ionic liquids (ILs) are used in a variety of technological and biological applications. Recent experimental and simulation results reveal the influence of aqueous ionic liquids on the stability of protein and enzyme structures. Depending on different parameters like the concentration and the ion composition, one can observe distinct stabilization or denaturation mechanisms for various ILs. In this review, we summarize the main findings and discuss the implications with regard to molecular theories of solutions and specific ion effects. A preferential binding model is introduced in order to discuss protein-IL effects from a statistical mechanics perspective. The value of the preferential binding coefficient determines the strength of the ion influence and indicates a shift of the chemical equilibrium either to the native or the denatured state of the protein. We highlight the role of water in order to explain the self-association behavior of the IL species and discuss recent experimental and simulation results in the light of the observed binding effects.
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Affiliation(s)
- Jens Smiatek
- Institute for Computational Physics, University of Stuttgart, Allmandring 3, D-70569 Stuttgart, Germany
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43
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Kumar A, Bisht M, Venkatesu P. Biocompatibility of ionic liquids towards protein stability: A comprehensive overview on the current understanding and their implications. Int J Biol Macromol 2017; 96:611-651. [DOI: 10.1016/j.ijbiomac.2016.12.005] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 12/02/2016] [Accepted: 12/04/2016] [Indexed: 10/20/2022]
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44
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Chatel G, Naffrechoux E, Draye M. Avoid the PCB mistakes: A more sustainable future for ionic liquids. JOURNAL OF HAZARDOUS MATERIALS 2017; 324:773-780. [PMID: 27899239 DOI: 10.1016/j.jhazmat.2016.11.060] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 11/03/2016] [Accepted: 11/21/2016] [Indexed: 06/06/2023]
Abstract
Based on our original knowledge and experience on both polychlorinated biphenyls (PCBs) identification in aquatic ecosystems, and use of ionic liquids (ILs) as solvents and/or co-catalysts in green chemistry, we drawn a dared comparison between these two families. Indeed, PCBs has been used during several decades for their new properties, but are now considered as prevalent and persistent pollutants; some toxic effects on environment or human are still revealed. ILs, often designated as "green solvents" are increasingly used in numerous applications, but few studies reported about their environmental impact are still controversial. Through a parallel between properties and applications of PCBs and ILs, we wondered if history could not repeat itself, and how to provide a better future for ILs. Here, we provide some interesting comparisons and we discuss which tracks it could be important to follow for ILs applications in order to avoid the errors done with PCBs.
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Affiliation(s)
- Gregory Chatel
- Université Savoie Mont Blanc, Laboratoire de Chimie Moléculaire et Environnement (LCME), Campus de Savoie Technolac, 73376 Le Bourget-du-Lac Cedex, France
| | - Emmanuel Naffrechoux
- Université Savoie Mont Blanc, Laboratoire de Chimie Moléculaire et Environnement (LCME), Campus de Savoie Technolac, 73376 Le Bourget-du-Lac Cedex, France
| | - Micheline Draye
- Université Savoie Mont Blanc, Laboratoire de Chimie Moléculaire et Environnement (LCME), Campus de Savoie Technolac, 73376 Le Bourget-du-Lac Cedex, France.
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45
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Bisht M, Venkatesu P. Influence of cholinium-based ionic liquids on the structural stability and activity of α-chymotrypsin. NEW J CHEM 2017. [DOI: 10.1039/c7nj03023a] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Unanticipated high thermal stability and sustained activity of CT was found in the presence of [Ch][Ac], [Ch][Cl] and [Ch][Dhp], while [Ch][Cit] and [Ch][OH] act as strong destabilizers for the CT structure.
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Affiliation(s)
- Meena Bisht
- Department of Chemistry, University of Delhi
- Delhi-110 007
- India
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46
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Jaeger VW, Pfaendtner J. Destabilization of Human Serum Albumin by Ionic Liquids Studied Using Enhanced Molecular Dynamics Simulations. J Phys Chem B 2016; 120:12079-12087. [DOI: 10.1021/acs.jpcb.6b09410] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Vance W. Jaeger
- Department of Chemical Engineering, University of Washington, 105 Benson Hall, Box 351750, Seattle, Washington 98195, United States
| | - Jim Pfaendtner
- Department of Chemical Engineering, University of Washington, 105 Benson Hall, Box 351750, Seattle, Washington 98195, United States
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47
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Strassburg S, Bermudez H, Hoagland D. Lysozyme Solubility and Conformation in Neat Ionic Liquids and Their Mixtures with Water. Biomacromolecules 2016; 17:2233-9. [PMID: 27159556 DOI: 10.1021/acs.biomac.6b00468] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The room temperature solubility of a number of model proteins is assessed for a diverse set of neat ionic liquids (ILs). For two soluble protein-IL pairs, lysozyme in [C2MIM][EtSO4] (1-ethyl-3-methylimidazolium ethylsulfate) and in [C2,4,4,4P][Et2PO4] (tributyl(ethyl)phosphonium diethylphosphate), protein solubility and structure at various temperatures are probed by dynamic light scattering (assessing dissolved molecular size), turbidimetry (reflecting degree of solubility), and Fourier transform infrared spectroscopy (uncovering helical secondary structure). As compared to aqueous environments, [C2,4,4,4P][Et2PO4] thermally stabilizes protein size and secondary structure while [C2MIM][EtSO4] does the opposite. Lysozyme denatured in [C2MIM][EtSO4] does not aggregate, presumably due to an absence of hydrophobic interactions, and the denaturation appears thermally reversible. Both ILs at room temperature are miscible with water in all proportions, but to create the corresponding ternary mixtures with protein, the order of mixing is important. Mixed to avoid additions of water to IL-dissolved protein, stable solutions are obtained with [C2MIM][EtSO4] at all solvent compositions. When water is added to IL-rich solutions, liquid-liquid demixing is noted.
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Affiliation(s)
- Stephen Strassburg
- Polymer Science and Engineering Department, University of Massachusetts-Amherst , Amherst, Massachusetts 01003, United States
| | - Harry Bermudez
- Polymer Science and Engineering Department, University of Massachusetts-Amherst , Amherst, Massachusetts 01003, United States
| | - David Hoagland
- Polymer Science and Engineering Department, University of Massachusetts-Amherst , Amherst, Massachusetts 01003, United States
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48
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Zhuang S, Wang H, Ding K, Wang J, Pan L, Lu Y, Liu Q, Zhang C. Interactions of benzotriazole UV stabilizers with human serum albumin: Atomic insights revealed by biosensors, spectroscopies and molecular dynamics simulations. CHEMOSPHERE 2016; 144:1050-9. [PMID: 26454115 DOI: 10.1016/j.chemosphere.2015.09.085] [Citation(s) in RCA: 114] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 09/16/2015] [Accepted: 09/22/2015] [Indexed: 05/08/2023]
Abstract
Benzotriazole UV stabilizers (BZTs) belong to one prominent group of ultraviolet (UV) stabilizers and are widely used in various plastics materials. Their large production volumes, frequent detections in the environment and potential toxicities have raised increasing public concern. BZTs can be transported in vivo by transport proteins in plasma and the binding association to transport proteins may serve as a significant parameter to evaluate the bioaccumulative potential. We utilized a novel HSA biosensor, circular dichroism spectroscopy, fluorescence spectroscopy to detect the dynamic interactions of six BZTs (UV-326, UV-327, UV-328, UV-329, UV-P, and BZT) with human serum albumin (HSA), and characterized the corresponding structure-activity relationships (SAR) by molecular dynamics simulations. All test BZTs potently bind at Sudlow site I of HSA with a binding constant of 10(4) L/mol at 298 K. Minor changes in the moieties of BZTs affect their interactions with HSA and differently induce conformations of HSA. Their binding reduced electrochemical impedance spectra and α-helix content of HSA, caused slight red-shifted emission, and changed fluorescence lifetime components of HSA in a concentration-dependent mode. UV-327 and UV-329 form hydrogen bonds with HSA, while UV-329, UV-P and BZT bind HSA with more favorable electrostatic interactions. Our in vitro and in silico study offered a significant framework toward the understanding of risk assessment of BZTs and provides guide for future design of environmental benign BZTs-related materials.
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Affiliation(s)
- Shulin Zhuang
- Institute of Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, Zhoushan 316022, China.
| | - Haifei Wang
- Institute of Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, Zhoushan 316022, China
| | - Keke Ding
- Institute of Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jiaying Wang
- Institute of Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Liumeng Pan
- Institute of Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yanli Lu
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Education Ministry, Department of Biomedical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Qingjun Liu
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Education Ministry, Department of Biomedical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Chunlong Zhang
- Department of Environmental Sciences, University of Houston-Clear Lake, 2700 Bay Area Blvd., Houston, TX 77058, USA
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49
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Zhao H. Protein Stabilization and Enzyme Activation in Ionic Liquids: Specific Ion Effects. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY (OXFORD, OXFORDSHIRE : 1986) 2016; 91:25-50. [PMID: 26949281 PMCID: PMC4777319 DOI: 10.1002/jctb.4837] [Citation(s) in RCA: 186] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 10/12/2015] [Indexed: 05/08/2023]
Abstract
There are still debates on whether the hydration of ions perturbs the water structure, and what is the degree of such disturbance; therefore, the origin of Hofmeister effect on protein stabilization continues being questioned. For this reason, it is suggested to use the 'specific ion effect' instead of other misleading terms such as Hofmeister effect, Hofmeister series, lyotropic effect, and lyotropic series. In this review, we firstly discuss the controversial aspect of inorganic ion effects on water structures, and several possible contributors to the specific ion effect of protein stability. Due to recent overwhelming attraction of ionic liquids (ILs) as benign solvents in many enzymatic reactions, we further evaluate the structural properties and molecular-level interactions in neat ILs and their aqueous solutions. Next, we systematically compare the specific ion effects of ILs on enzyme stability and activity, and conclude that (a) the specificity of many enzymatic systems in diluted aqueous IL solutions is roughly in line with the traditional Hofmeister series albeit some exceptions; (b) however, the specificity follows a different track in concentrated or neat ILs because other factors (such as hydrogen-bond basicity, nucelophilicity, and hydrophobicity, etc) are playing leading roles. In addition, we demonstrate some examples of biocatalytic reactions in IL systems that are guided by the empirical specificity rule.
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Affiliation(s)
- Hua Zhao
- Department of Chemistry and Forensic Science, Savannah State University, Savannah, GA 31404, USA
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50
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Pereiro AB, Araújo JMM, Teixeira FS, Marrucho IM, Piñeiro MM, Rebelo LPN. Aggregation behavior and total miscibility of fluorinated ionic liquids in water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:1283-1295. [PMID: 25580898 DOI: 10.1021/la503961h] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this work, novel and nontoxic fluorinated ionic liquids (FILs) that are totally miscible in water and could be used in biological applications, where fluorocarbon compounds present a handicap because their aqueous solubility (water and biological fluids) is in most cases too low, have been investigated. The self-aggregation behavior of perfluorosulfonate-functionalized ionic liquids in aqueous solutions has been characterized using conductometric titration, isothermal titration calorimetry (ITC), surface tension measurements, dynamic light scattering (DLS), viscosity and density measurements, and transmission electron microscopy (TEM). Aggregation and interfacial parameters have been computed by conductimetry, calorimetry, and surface tension measurements in order to study various thermodynamic and surface properties that demonstrate that the aggregation process is entropy-driven and that the aggregation process is less spontaneous than the adsorption process. The novel perfluorosulfonate-functionalized ILs studied in this work show improved surface activity and aggregation behavior, forming distinct self-assembled structures.
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Affiliation(s)
- Ana B Pereiro
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa , Apartado 127, 2780-157 Oeiras, Portugal
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