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Das S, Roy P, Sardar PS, Ghosh S. Addressing the interaction of stem bromelain with different anionic surfactants, below, at and above the critical micelle concentration (cmc) in phosphate buffer at pH 7: Physicochemical, spectroscopic, & molecular docking study. Int J Biol Macromol 2024; 271:132368. [PMID: 38761912 DOI: 10.1016/j.ijbiomac.2024.132368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 05/04/2024] [Accepted: 05/12/2024] [Indexed: 05/20/2024]
Abstract
The structural stability and therapeutic activity of Stem Bromelain (BM) have been explored by unravelling the interaction of stem BM in presence of two different types of anionic surfactants namely, bile salts, NaC and NaDC and the conventional anionic surfactants, SDDS and SDBS, below, at and above the critical micelle concentration (cmc) in aqueous phosphate buffer of pH 7. Different physicochemical parameters like, surface excess (Γcmc), minimum area of surfactants at air water interface (Amin) etc. are calculated from tensiometry both in absence and presence of BM. Several inflection points (C1, C2 and C3) have been found in tensiometry profile of surfactants in presence of BM due to the conformational change of BM assisted by surfactants. Similar observation also found in isothermal titration calorimetry (ITC) profiles where the enthalpy of micellization (ΔH0obs) of surfactants in absence and presence of BM have calculated. Further, steady state absorption and fluorescence spectra monitoring the tryptophan (Trp) emission of free BM and in presence of all the surfactants at three different temperatures (288.15 K, 298.15 K, and 308.15 K) reveal the nature of fluorescence quenching of BM in presence of bile salts/surfactants. Time resolved fluorescence studies at room temperature also support to determine the several quenching parameters. The binding constant (Kb) of BM with all the surfactants and free energy of binding (∆G0 of bile salts/surfactants with BM at different temperatures have been calculated exploiting steady state fluorescence technique. It is observed that, the binding of NaC with BM is greater as compared to other surfactants while Stern-Volmer quenching constant (KSV) is found greater in presence of SDBS as compared with others which supports the surface tension and ITC data with the fact that surface activity of surfactant(s) is decreasing with the binding of the surfactants at the core or binding pocket of BM. Circular Dichroism (CD) study shows the stability of secondary structure of BM in presence of NaC and NaDC below C3, while BM lost its structural stability even at very low surfactant concentration of SDDS and SDBS which also supports the more involvement of bile salts in binding rather than surfactants. The molecular docking studies have also been substantiated for better understanding the several experimental investigations interaction of BM with the bile salts/surfactants.
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Affiliation(s)
- Sourav Das
- Centre for Surface Science, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India; Department of Chemistry, The Bhawanipur Education Society College, Kolkata 700020, India
| | - Pritam Roy
- Laboratory of Molecular Bacteriology (Rega Institute), University: Katholieke Universiteit Leuven (KU Leuven), Herestraat 49, Leuven 3000, Belgium
| | - Pinki Saha Sardar
- Department of Chemistry, The Bhawanipur Education Society College, Kolkata 700020, India.
| | - Soumen Ghosh
- Centre for Surface Science, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India.
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Forgács E, Cserháti T, Farkas O, Eckhardt A, Miksik I, Deyl Z. Interaction Between Cholesterol and Non‐ionic Surfactants Studied by Thin‐Layer Chromatography. J LIQ CHROMATOGR R T 2009. [DOI: 10.1081/jlc-120039411] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- E. Forgács
- a Research Laboratory of Materials and Environmental Chemistry, Chemical Research Center , Hungarian Academy of Sciences , P.O. Box 17, H‐1525 , Budapest , Hungary
| | - T. Cserháti
- a Research Laboratory of Materials and Environmental Chemistry, Chemical Research Center , Hungarian Academy of Sciences , P.O. Box 17, H‐1525 , Budapest , Hungary
| | - O. Farkas
- a Research Laboratory of Materials and Environmental Chemistry, Chemical Research Center , Hungarian Academy of Sciences , P.O. Box 17, H‐1525 , Budapest , Hungary
| | - A. Eckhardt
- b Institute of Physiology , Czech Academy of Sciences , Prague , Czech Republic
| | - I. Miksik
- b Institute of Physiology , Czech Academy of Sciences , Prague , Czech Republic
| | - Z. Deyl
- b Institute of Physiology , Czech Academy of Sciences , Prague , Czech Republic
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Rafati AA, Ghasemian E. Thermodynamic and binding study of hemoglobin, oxy-hemoglobin and carbamino-hemoglobin upon interaction with cationic surfactants, using surfactant membrane selective electrodes. J Mol Liq 2009. [DOI: 10.1016/j.molliq.2008.10.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ghosh S. Interaction of trypsin with sodium dodecyl sulfate in aqueous medium: A conformational view. Colloids Surf B Biointerfaces 2008; 66:178-86. [DOI: 10.1016/j.colsurfb.2008.06.011] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2008] [Revised: 06/06/2008] [Accepted: 06/13/2008] [Indexed: 11/16/2022]
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Taboada P, Fernández Y, Mosquera V. Interactions of Two Amphiphilic Penicillins with Myoglobin in Aqueous Buffered Solutions: A Thermodynamic and Spectroscopy Study. Biomacromolecules 2004; 5:2201-11. [PMID: 15530034 DOI: 10.1021/bm0497724] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The interactions and complexation process of the amphiphilic penicillins sodium cloxacillin and sodium dicloxacillin with horse myoglobin in aqueous buffered solutions of pH 4.5 and 7.4 have been examined by equilibrium dialysis, zeta-potential, isothermal titration calorimetry (ITC) and UV-Vis absorbance techniques. A more opened structure of the protein molecules is detected as a consequence of the reduction of pH from 7.4 to 4.5. Binding isotherms and derived Hill coefficients reflect a cooperative binding behavior. Gibbs energies of binding per mole of drug were obtained from equilibrium dialysis data and compared with those derived from the zeta potential taking into account cooperativity. DeltaGads degrees values so obtained are large and negative at low concentrations where binding to the "high-energy" sites occurs and decreases with the drug concentration. The enthalpies of binding have been obtained from ITC and are small and exothermic so that the Gibbs energies of binding are dominated by large increases in entropy consistent with hydrophobic interactions. Other thermodynamic quantities of the binding mechanism, that is, entropy, DeltaSITCi, Gibbs energy, DeltaGITCi, the binding constant, KITCi, and the number of binding sites, ni, were also obtained, confirming the above results. From ITC data and following a theoretical model, the number of bound and free penicillin molecules was calculated, being higher at pH 4.5 than at pH 7.4. The binding of penicillin causes a conformational transition on protein structure as a consequence of the resulting intramolecular repulsion between the penicillin molecules bound to the protein. Thermodynamic quantites (the Gibbs energy of the transition in water, DeltaGw degrees , and in a hydrophobic environment, DeltaGhc degrees) of the denaturation process were calculated, indicating that at pH 4.5 some of the histidine residues are protonated, becoming accessible to solvent and giving rise to a more opened protein structure.
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Affiliation(s)
- Pablo Taboada
- Grupo de Física de Coloides y Polímeros, Departamento de Física de la Materia Condensada, Facultad de Física, Universidad de Santiago de Compostela, E-15782, Santiago de Compostela, Spain.
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Electrochemical study of thermodynamics of interaction of lysozyme with sodium dodecyl sulfate in binary ethanol–water mixtures. Colloids Surf A Physicochem Eng Asp 2003. [DOI: 10.1016/s0927-7757(02)00310-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Cserháti T, Forgács E, Oros G. Biological activity and environmental impact of anionic surfactants. ENVIRONMENT INTERNATIONAL 2002; 28:337-348. [PMID: 12437283 DOI: 10.1016/s0160-4120(02)00032-6] [Citation(s) in RCA: 267] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The newest results concerning the biological activity and environmental fate of anionic surfactants are collected and critically evaluated. The chemical and physicochemical parameters related to the biological activity and the field of application are briefly discussed. Examples on the effect of anionic surfactants on the cell membranes, on the activity of enzymes, on the binding to various proteins and to other cell components and on their human toxicity are presented and the possible mode of action is elucidated. The sources of environmental pollution caused by anionic surfactants are listed and the methods developed for their removal from liquid, semiliquid and solid matrices are collected. Both the beneficial and adversary effects of anionic surfactants on the environment are reported and critically discussed. It was concluded that the role of anionic surfactants in the environment is ambiguous: they can cause serous environmental pollution with toxic effect on living organisms; otherwise, they can promote the decomposition and/or removal of other inorganic and organic pollutants from the environment. The relationship between their chemical structure, physicochemical parameters, biological activity and environmental impact is notwell understood. A considerable number of data are needed for the development of new anionic surfactants and for the successful application of the existing ones to reduce the adversary and to promote beneficial effects.
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Affiliation(s)
- Tibor Cserháti
- Institute of Chemistry, Chemical Research Centre, Hungarian Academy of Sciences, Budapest.
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Forgács E, Cserháti T, Deyl Z, Miksik I, Eckhardt A. Mixtures of nonionic and anionic surfactants: interactions with low-molecular-mass homopeptides. J Chromatogr A 2001; 917:287-95. [PMID: 11403480 DOI: 10.1016/s0021-9673(01)00693-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The interaction between low molecular-mass homopeptides and mixtures of nonionic and anionic surfactants has been assessed by using reversed-phase thin-layer chromatography. The relative strength of interaction for mixtures of sodium dodecylsulfate and tridecylalcohol diglycolate (GNX) at the molar ratios of 8:2, 6:4, 4:6 and 2:8 has been calculated and its relationship with the physicochemical parameters (number of amino acid units, hydrophobicity, side chain bulkiness, electronic characteristics) of peptides has been computed by stepwise regression analysis. Each peptide interacted with each surfactant mixture the strength of interaction markedly depending on both the character of the peptide and the composition of the surfactant mixture. The hydrophobicity and electronic properties of the amino acid units exerted the highest influence on the strength of interaction at the highest concentration of the nonionic surfactant (GNX) whereas the number of amino acid units in the peptide molecule and the bulkiness of the amino acid side chain governed the strength of interaction at the lowest concentration of GNX.
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Affiliation(s)
- E Forgács
- Institute of Chemistry, Chemical Research Centre, Hungarian Academy of Sciences, Budapest.
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Ruso JM, Taboada P, Martínez-Landeira P, Prieto G, Sarmiento F. A Comparative Study of the Interaction between Nafcillin and Catalase by Equilibrium Dialysis and ζ-Potential Measurements. J Phys Chem B 2001. [DOI: 10.1021/jp003404m] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Juan M. Ruso
- Grupo de Física de Coloides y Polímeros, Departamento de Física Aplicada y Departamento de Física de la Materia Condensada, Facultad de Física, Universidad de Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - Pablo Taboada
- Grupo de Física de Coloides y Polímeros, Departamento de Física Aplicada y Departamento de Física de la Materia Condensada, Facultad de Física, Universidad de Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - Pablo Martínez-Landeira
- Grupo de Física de Coloides y Polímeros, Departamento de Física Aplicada y Departamento de Física de la Materia Condensada, Facultad de Física, Universidad de Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - Gerardo Prieto
- Grupo de Física de Coloides y Polímeros, Departamento de Física Aplicada y Departamento de Física de la Materia Condensada, Facultad de Física, Universidad de Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - Félix Sarmiento
- Grupo de Física de Coloides y Polímeros, Departamento de Física Aplicada y Departamento de Física de la Materia Condensada, Facultad de Física, Universidad de Santiago de Compostela, 15706 Santiago de Compostela, Spain
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Cserháti T, Forgács E, Deyl Z, Miksik I, Eckhardt A. Interaction of surfactants with homologous series of peptides studied by reversed-phase thin-layer chromatography. J Chromatogr A 2001; 910:137-45. [PMID: 11263567 DOI: 10.1016/s0021-9673(00)01191-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The relative strength of interaction between anionic (SDS) and nonionic surfactant (octaethoxylated oleyl alcohol, GEN) and homologous series of peptides was determined by reversed-phase thin-layer chromatography (RP-TLC) carried out on alumina layers impregnated with paraffin oil. The relative strength of interaction was calculated and was correlated with the physicochemical parameters of peptides. It was established that each peptide interacted with both surfactants and with their mixture (1:1, m/m). The relative strength of interaction depended on the number of amino acid units in the peptide, side chain bulk and electronic properties and hydrophobicity of the amino acids. The impact of individual parameters highly depended on the character of surfactant. The data prove that the retention order of peptides can be modified by adding different surfactants and surfactant mixtures to the mobile phase resulting in improved separation.
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Affiliation(s)
- T Cserháti
- Institute of Chemistry, Chemical Research Centre, Hungarian Academy of Sciences, Budapest.
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Affiliation(s)
- J Brange
- Novo Nordisk A/S, Bagsvaerd, Denmark
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12
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Saboury AA, Borbar AK, Moosavi-Movahedi AA. Resolution Method of Two Sets of Binding Sites for the Cationic Surfactant–Urease Interaction. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1996. [DOI: 10.1246/bcsj.69.3031] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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