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Kaushal D, Lal H, Ansari SS, Naqvi S. Effect of local anesthetic drug procaine hydrochloride on the conformational stability of bovine hemoglobin: Multi-spectroscopic and computational approaches. J Biomol Struct Dyn 2021; 40:8938-8948. [PMID: 33970817 DOI: 10.1080/07391102.2021.1920465] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The interaction between bovine hemoglobin (BHb) and local anesthetic drug procaine hydrochloride (PCH) was examined by spectroscopic and computational studies. Intrinsic fluorescence analysis explored the ground-state complex formation in the binding of PCH with BHb through static quenching mechanism. The binding constants (Kb) are 29.38 × 103, 22.54 × 103 and 17.99 × 103 M-1 at 288, 298 and 308 K, respectively, and the ratio of BHb:PCH was 1:1 in the interaction mechanism of PCH and BHb. The acquired thermodynamic parameters (ΔH0, ΔG0 and ΔS0) demonstrated that interaction mechanism is spontaneous and enthalpy driven. The van der Waals forces and hydrogen bonding have been played a predominant role in the binding mechanism. The UV-vis spectroscopy validates the ground-state complexation between PCH and BHb and the binding constant (Kb) has been evaluated utilizing Benesi-Hildebrand equation. Fluorescence resonance energy transfer (FRET) results have demonstrated that the distance between donor (BHb) and acceptor (PCH) is very short (2.34 nm) suggesting a significant probability to energy transfer from BHb to PCH. Synchronous fluorescence results revealed that the alteration in the micro-environment of Tyrosine (Tyr) is more than tryptophan (Trp) residues suggesting that PCH molecule is close to Tyr residue. The secondary structure alterations were confirmed by CD, 3-D fluorescence and FT-IR spectroscopic measurements. Moreover, computational analyses further corroborated that PCH molecules are closer to Tyr residues as compared to Trp residues of BHb during the interaction process. The BHb-PCH complexes may contribute to a deeper understanding of the metabolism of drug, blood circulation process and may help to illustrate the relationship between functions and structure of BHb.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Deepak Kaushal
- Department of Chemistry, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Hira Lal
- Department of Chemistry, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | | | - Saeeda Naqvi
- Department of Chemistry, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
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Chakraborty M, Mitra I, Roy AJ, Paul S, Mallick A, Das S, Saha A, Show B, Chakrabarti PK, Ganguly T. Contrasting spectroscopic response of human hemoglobin in presence of graphene oxides and its reduced form: Comparative approach with carbon quantum dots. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 247:119079. [PMID: 33120118 DOI: 10.1016/j.saa.2020.119079] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 09/29/2020] [Accepted: 10/10/2020] [Indexed: 06/11/2023]
Abstract
Recently, a considerable amount of research is being directed towards study of graphene oxide (GO) and its reduced form (RGO) since their exposed functional groups make them better candidates in nanobiotechnolgy. In order to assess their biocompatibility, the nature of interactions between Human Hemoglobin (HHb) and GO/RGO are monitored since a comparative spectroscopic approach towards understanding their nature of interactions has not been investigated previously. UV-vis spectroscopy reveals hyperchromicity for HHb-GO system and hypochromicity for HHb-RGO system in the region of absorption of tryptophan/tyrosine residues. Notably, although steady-state fluorescence static quenching of HHb for GO and enhancement of fluorescence for RGO is noticed, but average fluorescence-lifetime is remaining unchanged in presence of GO/RGO. Calorimetric data illustrates three-site and five-site binding model to be the best-fit model for GO and RGO respectively. Also, synchronous fluorescence quenching corresponding to alterations in microenvironment of tryptophan/ tyrosine residues is observed only in presence of GO. Likewise FTIR spectroscopy elucidates involvement of both amide I and amide II bond of HHb backbone through H-bonding interaction only for GO. Furthermore RLS spectra demonstrate an increase and a decrease in signal for GO and RGO respectively. Surprisingly, secondary structure of HHb is maintained upon interaction with both GO/RGO, as revealed by CD spectroscopy, thus supporting their potential application in biological microenvironment. Thus it appears that the spectroscopic properties of HHb upon interaction with GO is altered upon its reduction to RGO. Furthermore the role of HHb as good candidate for bimolecular interaction has been highlighted.
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Affiliation(s)
| | - Ishani Mitra
- Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Arka J Roy
- School Bio-Science, Jadavpur University, Kolkata 700032, India
| | - Somnath Paul
- School of Laser Science and Engineering, Jadavpur University, Kolkata 700032, India
| | - Ayan Mallick
- Department of Physics, University of Burdwan, Burdwan, India
| | - Subrata Das
- Department of CSS, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Abhijit Saha
- UGC-DAE Consortium for Scientific Research, III/LB-B Bidhannagar, Kolkata 700 098, India
| | | | | | - Tapan Ganguly
- School of Laser Science and Engineering, Jadavpur University, Kolkata 700032, India.
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Photophysical behavior of heme group: Unfolding of hemoglobin and myoglobin in the presence of Gemini surfactants of different molecular architectures. Int J Biol Macromol 2020; 156:576-584. [DOI: 10.1016/j.ijbiomac.2020.04.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 03/30/2020] [Accepted: 04/02/2020] [Indexed: 01/23/2023]
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Poly(Oxyethylene)-Amidoamine Based Gemini Cationic Surfactants for Oilfield Applications: Effect of Hydrophilicity of Spacer Group. MATERIALS 2020; 13:ma13051046. [PMID: 32110878 PMCID: PMC7085195 DOI: 10.3390/ma13051046] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 02/20/2020] [Accepted: 02/21/2020] [Indexed: 11/17/2022]
Abstract
Thermal stability, salt tolerance, and solubility in normal and high salinity brine are the major requirements for any surfactant designed for oilfield applications because the surfactant stays in a non-ambient environment inside the reservoir for a long period of time. Herein, a series of new gemini cationic surfactants (GSs) with varying spacer hydrophilicity were synthesized and elucidated using MALDI-ToF-MS, NMR (1H, 13C), as well as FTIR spectroscopy. GSs found to be soluble in normal as well as high salinity brine and aqueous stability tests revealed that GSs possess the ability to retain their structural integrity at high salinity and high temperature conditions because no suspension formation or precipitation was detected in the oven aged sample of GSs at 90 °C for 30 days. Thermal gravimetric analysis displayed a higher decomposition temperature than the real reservoir temperature and the GS with a secondary amine spacer exhibited high heat stability. The significant reduction in surface tension and critical micelle concentration was observed using 1 M NaCl solution in place of deionized water. The difference in surface tension and critical micelle concentration was insignificant when the 1 M NaCl solution was replaced with seawater. The synthesized surfactants can be utilized for oilfield applications in a challenging high temperature high salinity environment.
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Patel BK, Sepay N, Mahapatra A. Structural alteration of myoglobin with two homologous cationic surfactants and effect of β-cyclodextrin: multifaceted insight and molecular docking study. NEW J CHEM 2020. [DOI: 10.1039/d0nj01113d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Structural alteration and regeneration of myoglobin.
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Affiliation(s)
| | - Nayim Sepay
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032
- India
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Li Y, Lee JS. Staring at protein-surfactant interactions: Fundamental approaches and comparative evaluation of their combinations - A review. Anal Chim Acta 2019; 1063:18-39. [DOI: 10.1016/j.aca.2019.02.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 02/15/2019] [Accepted: 02/18/2019] [Indexed: 02/07/2023]
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Chakraborty M, Mitra I, Sarkar K, Bardhan M, Paul S, Basu S, Goswami A, Saha A, Show B, Ganguly T. Fluorescence enhancement via aggregation effect due to microenvironmental alterations in human hemoglobin protein in presence of carbon quantum dots (CQD): Comparative spectroscopic approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 215:313-326. [PMID: 30851689 DOI: 10.1016/j.saa.2019.02.108] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 02/18/2019] [Accepted: 02/27/2019] [Indexed: 06/09/2023]
Abstract
CQDs have emerged with outstanding properties as a star member of carbon nanomaterial family and in order to reveal its wide-range of application in biological microenvironment the interactions between human hemoglobin (HHb) and CQD and also with ethylenediamine-functionalized CQD (NCQD) are assessed using several techniques. Firstly, UV-vis absorption spectra of HHb reveal hyperchromic effect in the region of absorbance of tryptophan and tyrosine residues and also hypochromicity of Soret band in presence of CQD and NCQD. Interestingly, steady-state fluorescence spectroscopy reveal distinct fluorescence enhancement of HHb with significant red shift thereby indicating exposures of tryptophan and tyrosine residues to a more hydrophilic environment. However synchronous fluorescence spectra reveal that the microenvironment of tryptophan and tyrosine residues is altered in opposite manner, i.e. exposure of tryptophan residues to a more hydrophilic environment and the tyrosine residues to a more hydrophobic environment. Moreover the fluorescence enhancement is observed to be accompanied by increase in average fluorescence-lifetime and decrease in steady-state anisotropy thus signifying a decrease in restriction of rotational motion. Furthermore tryptophan residues within HHb appear to interact more with CQD compared to NCQD. Thermodynamic parameters as revealed by Isothermal Titration Calorimetry (ITC) demonstrate that electrostatic, hydrogen bonding and hydrophobic interactions are the predominant modes of interactions in presence of CQD. Whereas hydrophobic and hydrogen bonding interactions are the major interacting forces in presence of NCQD with five-site sequential binding as best-fit model in both the cases. Such interactions also appear to be associated with an increase in aggregation of HHb as evident from the measurements by atomic force microscopy (AFM) and dynamic light scattering (DLS) study. Although FT-IR spectra display alteration of amide I band, but the overall secondary structure of HHb seems to be nearly retained even in presence of CQDs, as evident in the CD spectra. These observations thus highlight the potential biomedical application of CQDs in biological microenvironment of human especially as drug-delivery system. Also bimolecular interaction of HHb as a model protein with other nanoparticles at the nano bio-interface has been outlined.
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Affiliation(s)
| | - Ishani Mitra
- Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Kuntal Sarkar
- School of Laser Science and Engineering, Jadavpur University, Jadavpur, Kolkata 700032, India
| | | | - Somnath Paul
- School of Laser Science and Engineering, Jadavpur University, Jadavpur, Kolkata 700032, India
| | - Satakshi Basu
- Agriculture and Ecological Research Unit, Biological Sciences Division, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India
| | - Arunava Goswami
- Agriculture and Ecological Research Unit, Biological Sciences Division, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India
| | - Abhijit Saha
- UGC-DAE Consortium for Scientific Research, Kolkata Center, III/LB-B Bidhannagar, Kolkata 700 098, India
| | - Bibhutibhushan Show
- Department of Chemistry, Jadavpur University, Jadavpur, Kolkata 700032, India
| | - Tapan Ganguly
- School of Laser Science and Engineering, Jadavpur University, Jadavpur, Kolkata 700032, India.
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Synthesis of Novel Ethoxylated Quaternary Ammonium Gemini Surfactants for Enhanced Oil Recovery Application. ENERGIES 2019. [DOI: 10.3390/en12091731] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Two aspects are always considered in the design and development of new surfactants for oilfield application. One of them is that surfactant must be sufficiently stable at reservoir temperature and the other is the solubility of the surfactant in the injection water (usually seawater) and the formation brine. Most industrially applied surfactants undergo hydrolysis at elevated temperature and the presence of reservoir ions causes surfactant precipitation. In relevance to this, a novel series of quaternary ammonium gemini surfactants with different length of spacer group (C8, C10, and C12) was synthesized and characterized using FT-IR, 13C NMR, 1H NMR, and MALDI-TOF MS. The gemini surfactants were prepared by solvent-free amidation of glycolic acid ethoxylate lauryl ether with 3-(dimethylamino)-1-propylamine followed by reaction with dibromoalkane to obtain quaternary ammonium gemini surfactants. The gemini surfactants were examined by means of surface properties and thermal stabilities. The synthesized gemini surfactants showed excellent solubility in the formation brine, seawater, and deionized water without any precipitation for up to three months at 90 °C. Thermal gravimetric data revealed that all the gemini surfactants were decomposed above 227 °C, which is higher than the oilfield temperature (≥90 °C). The decrease in critical micelle concentration (CMC) and surface tension at CMC (γcmc) was detected by enhancing spacer length in the order C8 ˃ C10 ˃ C12 which suggested that the larger the spacer, the better the surface properties. Moreover, a further decrease in CMC and γcmc was noticed by enhancing temperature (30 °C ˃ 60 °C) and salinity (deionized water ˃ seawater). The current study provides a comprehensive investigation of quaternary ammonium gemini surfactants that can be further extended potentially to use as a suitable material for oilfield application.
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Patel BK, Sepay N, Rudra S, Mahapatra A. Deciphering the role of the head group of cationic surfactants in their binding interactions with heme protein and their release by β-cyclodextrin. NEW J CHEM 2018. [DOI: 10.1039/c8nj02032a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We decipher the mode of binding of surfactants with hemoglobin and their release by β-cyclodextrin.
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Affiliation(s)
| | - Nayim Sepay
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032
- India
| | - Suparna Rudra
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032
- India
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Akram M, Anwar S, Bhat IA, Kabir-ud-Din. Multifaceted Analysis of the Noncovalent Interactions of Myoglobin with Finely Tuned Gemini Surfactants: A Comparative Study. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b01583] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mohd. Akram
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Sana Anwar
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Imtiyaz Ahmad Bhat
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Kabir-ud-Din
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
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Spectroscopic properties of an amphiphilic naphthalimide derivative with high surface activity and detection of trace salt in the water as a fluorescent sensor. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.07.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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