151
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Wang L, Li H, Yang Y, Zhang D, Wu M, Pan B, Xing B. Identifying structural characteristics of humic acid to static and dynamic fluorescence quenching of phenanthrene, 9-phenanthrol, and naphthalene. WATER RESEARCH 2017; 122:337-344. [PMID: 28618358 DOI: 10.1016/j.watres.2017.06.010] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 05/11/2017] [Accepted: 06/05/2017] [Indexed: 05/27/2023]
Abstract
Fluorescence quenching is a sensitive and fast method to quantify the interactions between a fluorescent organic contaminant and a quencher, such as dissolved organic matter (DOM). Dynamic fluorescence quenching is resulted from molecular collision, not the real binding, and thus it complicates the binding data interpretation. On the other hand, static fluorescence quenching occurs for fluorescent contaminants of ground states, which decreases the concentration of freely dissolved contaminants. However, how a particular structure in DOM contributes to the static and dynamic fluorescence quenching of a fluorescent contaminant is still unclear, which has greatly hindered the application of fluorescence quenching technique. A humic acid (HA) extracted from sediment was chemically modified, i.e., bleaching, acid hydrolysis, and decarboxylation. HAs before and after these modifications were used in fluorescence quenching experiments for phenanthrene (PHE), 9-phenanthrol (PTR) and naphthalene (NAP). Different quenching mechanisms were observed for these chemicals depending on HA properties. For PHE and NAP, aromatic components showed static quenching, while carboxyl groups primarily showed dynamic quenching. Aromatic components and carbohydrates in HAs primarily bound (static quenching) rather than collided (dynamic quenching) with PTR. Carboxyl groups showed interactions with PTR through dynamic quenching only when carboxyl groups were on the benzene ring. Based on the results, we emphasized that dynamic quenching should be carefully excluded in fluorescence quenching studies. This line of study is important to establish a general relationship between DOM properties and static/dynamic quenching contributions.
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Affiliation(s)
- Lin Wang
- Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming, 650500, China
| | - Hao Li
- Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming, 650500, China
| | - Yu Yang
- Department of Civil and Environmental Engineering, University of Nevada, Reno, NV, 89523, USA
| | - Di Zhang
- Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming, 650500, China
| | - Min Wu
- Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming, 650500, China
| | - Bo Pan
- Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming, 650500, China.
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, USA
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152
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Kapp E, Visser H, Sampson SL, Malan SF, Streicher EM, Foka GB, Warner DF, Omoruyi SI, Enogieru AB, Ekpo OE, Zindo FT, Joubert J. Versatility of 7-Substituted Coumarin Molecules as Antimycobacterial Agents, Neuronal Enzyme Inhibitors and Neuroprotective Agents. Molecules 2017; 22:molecules22101644. [PMID: 28973990 PMCID: PMC6151660 DOI: 10.3390/molecules22101644] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 09/21/2017] [Accepted: 09/27/2017] [Indexed: 11/16/2022] Open
Abstract
A medium-throughput screen using Mycobacterium tuberculosis H37Rv was employed to screen an in-house library of structurally diverse compounds for antimycobacterial activity. In this initial screen, eleven 7-substituted coumarin derivatives with confirmed monoamine oxidase-B and cholinesterase inhibitory activities, demonstrated growth inhibition of more than 50% at 50 µM. This prompted further exploration of all the 7-substituted coumarins in our library. Four compounds showed promising MIC99 values of 8.31–29.70 µM and 44.15–57.17 µM on M. tuberculosis H37Rv in independent assays using GAST-Fe and 7H9+OADC media, respectively. These compounds were found to bind to albumin, which may explain the variations in MIC between the two assays. Preliminary data showed that they were able to maintain their activity in fluoroquinolone resistant mycobacteria. Structure-activity relationships indicated that structural modification on position 4 and/or 7 of the coumarin scaffold could direct the selectivity towards either the inhibition of neuronal enzymes or the antimycobacterial effect. Moderate cytotoxicities were observed for these compounds and slight selectivity towards mycobacteria was indicated. Further neuroprotective assays showed significant neuroprotection for selected compounds irrespective of their neuronal enzyme inhibitory properties. These coumarin molecules are thus interesting lead compounds that may provide insight into the design of new antimicrobacterial and neuroprotective agents.
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Affiliation(s)
- Erika Kapp
- School of Pharmacy, Faculty of Natural Sciences, University of the Western Cape, Cape Town, Bellville 7550, South Africa.
| | - Hanri Visser
- DST/NRF Centre of Excellence in Biomedical Tuberculosis Research, SA MRC Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, University of Stellenbosch, Cape Town, Tygerberg 7505, South Africa.
| | - Samantha L Sampson
- DST/NRF Centre of Excellence in Biomedical Tuberculosis Research, SA MRC Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, University of Stellenbosch, Cape Town, Tygerberg 7505, South Africa.
| | - Sarel F Malan
- School of Pharmacy, Faculty of Natural Sciences, University of the Western Cape, Cape Town, Bellville 7550, South Africa.
| | - Elizabeth M Streicher
- DST/NRF Centre of Excellence in Biomedical Tuberculosis Research, SA MRC Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, University of Stellenbosch, Cape Town, Tygerberg 7505, South Africa.
| | - Germaine B Foka
- School of Pharmacy, Faculty of Natural Sciences, University of the Western Cape, Cape Town, Bellville 7550, South Africa.
| | - Digby F Warner
- Medical Research Council/National Health Laboratory Service/University of Cape Town Molecular Mycobacteriology Research Unit, Department of Science and Technology/National Research Foundation Centre of Excellence for Biomedical Tuberculosis Research, Institute of Infectious Disease and Molecular Medicine and Department of Clinical Laboratory Sciences, University of Cape Town, Cape Town, Rondebosch 7700, South Africa.
| | - Sylvester I Omoruyi
- Department of Medical Biosciences, University of the Western Cape, Cape Town, Bellville 7550, South Africa.
| | - Adaze B Enogieru
- Department of Medical Biosciences, University of the Western Cape, Cape Town, Bellville 7550, South Africa.
| | - Okobi E Ekpo
- Department of Medical Biosciences, University of the Western Cape, Cape Town, Bellville 7550, South Africa.
| | - Frank T Zindo
- School of Pharmacy, Faculty of Natural Sciences, University of the Western Cape, Cape Town, Bellville 7550, South Africa.
| | - Jacques Joubert
- School of Pharmacy, Faculty of Natural Sciences, University of the Western Cape, Cape Town, Bellville 7550, South Africa.
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153
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Hao C, Xu G, Feng Y, Lu L, Sun W, Sun R. Fluorescence quenching study on the interaction of ferroferric oxide nanoparticles with bovine serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 184:191-197. [PMID: 28499172 DOI: 10.1016/j.saa.2017.05.004] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 04/30/2017] [Accepted: 05/04/2017] [Indexed: 06/07/2023]
Abstract
Fluorescence quenching was used to study the potential interaction mechanism of Bovine serum albumin (BSA) with either hydrophilic ferroferric oxide (Fe3O4) nanoparticles (NPs) or hydrophobic Fe3O4 NPs. The experimental results indicated the mechanism between BSA and hydrophilic Fe3O4 NPs was static quenching and the one between BSA and hydrophobic Fe3O4 NPs was dynamic process that was drove by Förster's resonance energy transfer (FRET). And the binding parameters for the interaction of BSA with either hydrophilic or hydrophobic Fe3O4 NPs were calculated by using the fluorescence quenching measurement. The binding constant (KA) values of hydrophilic Fe3O4 NPs were 8518.73±23.35 (at 298K), 1190.31±15.41 (at 306K) and 321.97±8.57 (at 313K), respectively. The thermodynamic analysis implied that the intermolecular forces between BSA and hydrophilic Fe3O4 NPs were Van der Waals interaction or hydrogen bond, because the values of ΔH and ΔS between them were negative. While the one of BSA and hydrophobic Fe3O4 NPs involved hydrophobic forces, owing to the positive ΔH and ΔS between them. But they were all enthalpy-driven and exothermic, since their ΔG values were all negative. Synchronous fluorescence spectroscopy suggested that the conformation of tryptophan residue of BSA was changed in the presence of hydrophilic Fe3O4 NPs or hydrophobic Fe3O4 NPs, because the position of the maximum emission wavelength had a discernible red shift.
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Affiliation(s)
- Changchun Hao
- Laboratory of Biophysics and Biomedical Engineering, School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China.
| | - Guangkuan Xu
- Laboratory of Biophysics and Biomedical Engineering, School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China
| | - Ying Feng
- Laboratory of Biophysics and Biomedical Engineering, School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China
| | - Linhao Lu
- Laboratory of Biophysics and Biomedical Engineering, School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China
| | - Wenyuan Sun
- Laboratory of Biophysics and Biomedical Engineering, School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China
| | - Runguang Sun
- Laboratory of Biophysics and Biomedical Engineering, School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China.
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154
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Singaravelan K, Chandramohan A, Saravanabhavan M, Muthu Vijayan Enoch IV, Suganthi VS. Hydrogen bonded charge transfer molecular salt (4-chloro anilinium-3-nitrophthalate) for photophysical and pharmacological applications. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 184:318-326. [PMID: 28527395 DOI: 10.1016/j.saa.2017.05.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 05/02/2017] [Accepted: 05/08/2017] [Indexed: 06/07/2023]
Abstract
Radical scavenging activity against DPPH radical and binding properties of a hydrogen bonded charge transfer molecular salt 4-chloro anilinium-3-nitrophthalate(CANP) with calf thymus DNA has been studied by electronic absorption and emission spectroscopy. The molecular structure and crystallinity of the CANP salt have been established by carried out powder and single crystal X-ray diffraction analysis which indicated that cation and anion are linked through strong N+H…O- type of hydrogen bond. FTIR spectroscopic study was carried out to know the various functional groups present in the crystal. 1H and 13C NMR spectra were recorded to further confirm the molecular structure of the salt crystal. The thermal stability of the title salt was established by TG/DTA analyses simultaneously on the powdered sample of the title crystal. Further, the CANP salt was examined against various bacteria and fungi strains which showed a remarkable antimicrobial activity compared to that of the standards Ciproflaxin and Clotrimazole. The results showed that the CANP salt could interact with CT-DNA through intercalation. Antioxidant studies of the substrates alone and synthesized CANP salt showed that the latter has been better radical scavenging activity than that of the former against DPPH radical. The third order nonlinear susceptibility of the CANP salt was established by the Z-scan study.
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Affiliation(s)
- K Singaravelan
- Post-Graduate and Research Department of Chemistry, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore 641 020, Tamil Nadu, India
| | - A Chandramohan
- Post-Graduate and Research Department of Chemistry, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore 641 020, Tamil Nadu, India.
| | - M Saravanabhavan
- Post-Graduate and Research Department of Chemistry, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore 641 020, Tamil Nadu, India; Department of Chemistry, Dr.N.G.P. Institute of Technology, Coimbatore 48, India
| | - I V Muthu Vijayan Enoch
- Department of Chemistry/Nanoscience & Technology, Karunya University, Coimbatore 641114, Tamil Nadu, India
| | - V S Suganthi
- Department of Chemistry/Nanoscience & Technology, Karunya University, Coimbatore 641114, Tamil Nadu, India
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155
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Zulkarnain, Miyan L, Ahmad A, Fazle Alam M, Younus H. Synthesis, single-crystal, DNA interaction, spectrophotometric and spectroscopic characterization of the hydrogen-bonded charge transfer complex of 2-aminopyrimidine with π-acceptor chloranilic acid at different temperature in acetonitrile. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 174:195-208. [DOI: 10.1016/j.jphotobiol.2017.07.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 06/23/2017] [Accepted: 07/03/2017] [Indexed: 01/01/2023]
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156
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Zhang XM, Tang J, Wang LN, Yao D, Yu Q, Huang FP, Bian HD. Superoxide dismutase activity studies of Mn(III)/Co(III)/Fe(III) complexes with Schiff base ligands. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.05.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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157
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Maji A, Beg M, Mandal AK, Das S, Jha PK, Hossain M. Study of the interaction of human serum albumin with Alstonia scholaris leaf extract-mediated silver nanoparticles having bactericidal property. Process Biochem 2017. [DOI: 10.1016/j.procbio.2017.05.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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158
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Asadi Z, Mosallaei H, Sedaghat M, Yousefi R. Competitive binding affinity of two lanthanum(III) macrocycle complexes toward DNA and bovine serum albumin in water. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2017. [DOI: 10.1007/s13738-017-1172-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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159
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Functional hybrid nanostructure materials: Advanced strategies for sensing applications toward volatile organic compounds. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.04.006] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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160
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Drug-protein binding mechanism of juglone for early pharmacokinetic profiling: Insights from ultrafiltration, multi-spectroscopic and molecular docking methods. J Pharm Biomed Anal 2017; 141:262-269. [DOI: 10.1016/j.jpba.2017.03.036] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 03/14/2017] [Accepted: 03/17/2017] [Indexed: 12/20/2022]
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161
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Lou YY, Zhou KL, Shi JH, Pan DQ. Characterizing the binding interaction of fungicide boscalid with bovine serum albumin (BSA): A spectroscopic study in combination with molecular docking approach. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 173:589-597. [PMID: 28697476 DOI: 10.1016/j.jphotobiol.2017.06.037] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 06/14/2017] [Accepted: 06/24/2017] [Indexed: 11/30/2022]
Abstract
Boscalid, a carboxamide fungicide, is used in the treatment of grey mould and powdery mildew, widely applied to a variety of crops and fruits such as rice, wheat, grapes and pears. It will become a potential risk for health due to its widely application and residue in crops and fruits. In this study, the binding interaction between boscalid and bovine serum albumin (BSA) was characterized using steady-state fluorescence spectroscopy, ultraviolet spectroscopy (UV), synchronous fluorescence spectroscopy, 3D fluorescence spectroscopy, Fourier transform infrared spectroscopy (FT-IR) and molecular docking to ascertain the store, transport and distribution of boscalid in vivo. The experimental results indicated that the fluorescence of BSA was quenched due to the forming the static boscalid-BSA complex with the binding constant of 4.57×103M-1 at 298 K and boscalid bound on the subdomain III A (site II) of BSA through van der Waals force and hydrogen bonding interaction. The binding process of boscalid with BSA was spontaneous and enthalpy-driven process based on ΔG0<0 and |ΔH0|>T|ΔS0| over the studied temperature range. Meanwhile, the obvious change in the conformation of boscalid was observed while the slight change in the conformation of BSA when binding boscalid to the BSA, implying that the flexibility of boscalid contributes to increasing the stability of the boscalid-BSA complex.
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Affiliation(s)
- Yan-Yue Lou
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Kai-Li Zhou
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jie-Hua Shi
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China.
| | - Dong-Qi Pan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
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162
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Jayabharathi J, Sarojpurani E, Thanikachalam V, Jeeva P. Far-Field Enhancement by Silver Nanoparticles in Organic Light Emitting Diodes Based on Donor−π–Acceptor Chromophore. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b00783] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | - Palanivel Jeeva
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamilnadu, India
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163
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Mitra AK, Sau A, Pal U, Saha C, Basu S. Constrained Photophysics of 5,7-dimethoxy-2,3,4,9-tetrahydro-1H-carbazol-1-one in the Bioenvironment of Serum Albumins: A Spectroscopic Endeavour Supported by Molecular Docking Analysis. J Fluoresc 2017; 27:1547-1558. [PMID: 28434063 DOI: 10.1007/s10895-017-2094-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 04/04/2017] [Indexed: 11/27/2022]
Abstract
This paper vividly indicates that steady state as well as time-resolved fluorescence techniques can serve as highly sensitive monitors to explore the interactions of 5,7-dimethoxy-2,3,4,9-tetrahydro-1H-carbazol-1-one with model transport proteins, bovine serum albumin (BSA) and human serum albumin (HSA). Besides these, we have used fluorescence anisotropy study to assess the degree of restrictions imparted by the micro-environments of serum albumins. Again, to speculate the triplet excited state interaction between such fluorophore and albumin proteins (BSA& HSA), laser flash-photolysis experiments have been carried out. Molecular docking experiments have also been performed to support the conclusions obtained from steady state experiments.
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Affiliation(s)
- Amrit Krishna Mitra
- Department of Chemistry, Government General Degree College, Singur, Hooghly, West Bengal, Pin:712409, India
| | - Abhishek Sau
- Chemical Sciences Division, Saha Institute of Nuclear Physics, Kolkata, 700064, India
| | - Uttam Pal
- Chemical Sciences Division, Saha Institute of Nuclear Physics, Kolkata, 700064, India
| | - Chandan Saha
- Department of Clinical and Experimental Pharmacology, School of Tropical Medicine, Kolkata, 700073, India
| | - Samita Basu
- Chemical Sciences Division, Saha Institute of Nuclear Physics, Kolkata, 700064, India.
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164
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Tian Z, Zhao L, Dong H, Zhang Y, Zhang Y, Ren Q, Shao S, Huang Y, Song L, Guo T, Xu X, Wang C. Study on the interaction of anthracenyl-methyl homospermidine conjugate (ANTMHspd) with DNA by spectroscopic methods. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 169:27-34. [DOI: 10.1016/j.jphotobiol.2017.02.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 02/21/2017] [Indexed: 11/16/2022]
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165
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Byadagi K, Meti M, Nandibewoor S, Chimatadar S. Investigation of binding behaviour of procainamide hydrochloride with human serum albumin using synchronous, 3D fluorescence and circular dichroism. J Pharm Anal 2017; 7:103-109. [PMID: 29404024 PMCID: PMC5686859 DOI: 10.1016/j.jpha.2016.07.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Revised: 07/15/2016] [Accepted: 07/17/2016] [Indexed: 11/15/2022] Open
Abstract
Interaction of procainamide hydrochloride (PAH) with human serum albumin (HSA) is of great significance in understanding the pharmacokinetic and pharmacodynamic mechanisms of the drug. Multi-spectroscopic techniques were used to investigate the binding mode of PAH to HSA and results revealed the presence of static type of quenching mechanism. The number of binding sites, binding constants and thermodynamic parameters were calculated. The results showed a spontaneous binding of PAH to HSA and hydrophobic interactions played a major role. In addition, the distance between PAH and the Trp-214 was estimated employing the Förster's theory. Site marker competitive experiments indicated that the binding of PAH to HSA primarily took place in subdomain IIA (Sudlow's site I). The influence of interference of some common metal ions on the binding of PAH to HSA was studied. Synchronous fluorescence spectra (SFS), 3D fluorescence spectra and circular dichroism (CD) results indicated the conformational changes in the structure of HSA.
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166
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Li H, Tan J, Song X, Wu F, Tang M, Hua Q, Zheng H, Hu F. Sublethal doses of neonicotinoid imidacloprid can interact with honey bee chemosensory protein 1 (CSP1) and inhibit its function. Biochem Biophys Res Commun 2017; 486:391-397. [DOI: 10.1016/j.bbrc.2017.03.051] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 03/13/2017] [Indexed: 01/11/2023]
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167
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Li X, Li C, Jiang J, Gu H, Wei D, Ye L, Hu J, Xiao S, Zhang H, Li X, Li Q. Fluorescence spectroscopic studies on the interaction between a new bismuth(III) Schiff base complex and bovine serum albumin. Chem Res Chin Univ 2017. [DOI: 10.1007/s40242-017-6361-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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168
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Zaman M, Nusrat S, Zakariya SM, Khan MV, Ajmal MR, Khan RH. Elucidating the interaction of clofazimine with bovine liver catalase; a comprehensive spectroscopic and molecular docking approach. J Mol Recognit 2017; 30. [DOI: 10.1002/jmr.2619] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 12/31/2016] [Accepted: 02/02/2017] [Indexed: 01/25/2023]
Affiliation(s)
- Masihuz Zaman
- Interdisciplinary Biotechnology Unit; Aligarh Muslim University; Aligarh 202002 India
| | - Saima Nusrat
- Interdisciplinary Biotechnology Unit; Aligarh Muslim University; Aligarh 202002 India
| | | | - Mohsin Vahid Khan
- Interdisciplinary Biotechnology Unit; Aligarh Muslim University; Aligarh 202002 India
| | - Mohammad Rehan Ajmal
- Interdisciplinary Biotechnology Unit; Aligarh Muslim University; Aligarh 202002 India
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit; Aligarh Muslim University; Aligarh 202002 India
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169
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Lin T, Hou B, Wang J, Xu Y, Chen W. Characterization of interaction between amino acids and fulvic-like organic matter by fluorescence spectroscopy combining thermodynamic calculation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:7226-7235. [PMID: 28101708 DOI: 10.1007/s11356-017-8444-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 01/10/2017] [Indexed: 06/06/2023]
Abstract
Dissolved organic matter (DOM), as a very fine colloidal suspension, could inevitably affect the transformation process of dissolved organic nitrogen (DON) in drinking water treatment. Tryptophan and tyrosine were used as representatives of DON to investigate the interactions between amino acids and fulvic-like components of fluorescent DOM using titration experiments. The fluorescence intensity decreased significantly with the increasing fulvic acid (FA) concentration, suggesting that FA could greatly quench the intrinsic fluorescence of amino acids such as tryptophan and tyrosine. The absolute spectrum peaks of amino acids (AA) were changed in the presence of FA, possibly being resulted from non-covalent interactions between amino acids and FA. The specific hydrogen bonding and van der Waals forces played dominant roles in the interactions according to the results of theoretical analysis and thermodynamic calculation. The distance between donor and acceptor was 1.25 and 1.14 nm for the FA-tyrosine and FA-tryptophan system, indicating the energy transfer from tyrosine or tryptophan to FA. The association constant (K) decreased with the increase of temperature and pH value, while the change of ionic strength had no obvious influence on K value.
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Affiliation(s)
- Tao Lin
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing, 210098, People's Republic of China.
- College of Environment, Hohai University, Nanjing, 210098, People's Republic of China.
| | - Bingwei Hou
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing, 210098, People's Republic of China
- College of Environment, Hohai University, Nanjing, 210098, People's Republic of China
| | - Jian Wang
- Yixing Water Group, Xiying, 214221, People's Republic of China
| | - Yaqun Xu
- Yixing Water Group, Xiying, 214221, People's Republic of China
| | - Wei Chen
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing, 210098, People's Republic of China
- College of Environment, Hohai University, Nanjing, 210098, People's Republic of China
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170
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Tyagi P, Tyagi M, Agrawal S, Chandra S, Ojha H, Pathak M. Synthesis, characterization of 1,2,4-triazole Schiff base derived 3d-metal complexes: Induces cytotoxicity in HepG2, MCF-7 cell line, BSA binding fluorescence and DFT study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 171:246-257. [PMID: 27541797 DOI: 10.1016/j.saa.2016.08.008] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 07/20/2016] [Accepted: 08/07/2016] [Indexed: 05/22/2023]
Abstract
Two novel Schiff base ligands H2L1 and H2L2 have been synthesized by condensation reaction of amine derivative of 1,2,4-triazole moiety with 2-hydroxy-4-methoxybenzaldehyde. Co(II), Ni(II), Cu(II) and Zn(II) of the synthesized Schiff bases were prepared by using a molar ratio of ligand:metal as 1:1. The structure of the Schiff bases and synthesized metal complexes were established by 1H NMR, UV-Vis, IR, Mass spectrometry and molar conductivity. The thermal stability of the complexes was study by TGA. Fluorescence quenching mechanism of metal complexes 1-4 show that Zn(II) and Cu(II) complex binds more strongly to BSA. In DFT studies the geometries of Schiff bases and metal complexes were fully optimized with respect to the energy using the 6-31+g(d,p) basis set. The spectral data shows that the ligands behaves as binegative tridentate. On the basis of the spectral studies, TGA and DFT data an octahedral geometry has been assigned for Co(II), Ni(II), square planar for Cu(II) and tetrahedral for Zn(II) complexes. The anticancer activity were screened against human breast cancer cell line (MCF-7) and human hepatocellular liver carcinoma cell line (Hep-G2). Result indicates that metal complexes shows increase cytotoxicity in proliferation to cell lines as compared to free ligand.
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Affiliation(s)
- Prateek Tyagi
- Department of Chemistry, Zakir Husain Delhi College, University of Delhi, JLN-Marg, New Delhi 110002, India
| | - Monika Tyagi
- Department of Chemistry, Zakir Husain Delhi College, University of Delhi, JLN-Marg, New Delhi 110002, India
| | - Swati Agrawal
- Department of Chemistry, Moti Lal Nehru College, Benito Juarez Marg, New Delhi 110021, India
| | - Sulekh Chandra
- Department of Chemistry, Zakir Husain Delhi College, University of Delhi, JLN-Marg, New Delhi 110002, India.
| | - Himanshu Ojha
- Institute of Nuclear Medicine & Allied Sciences, DRDO, Delhi 110054, India
| | - Mallika Pathak
- Department of Chemistry, Miranda House, University of Delhi, Delhi 110007, India
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171
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A spectroscopic and thermal stability study on the interaction between putrescine and bovine trypsin. Int J Biol Macromol 2017; 94:145-153. [DOI: 10.1016/j.ijbiomac.2016.10.009] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 10/02/2016] [Accepted: 10/05/2016] [Indexed: 01/25/2023]
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172
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Jayabharathi J, Sundari GA, Thanikachalam V, Jeeva P, Panimozhi S. A dodecanethiol-functionalized Ag nanoparticle-modified ITO anode for efficient performance of organic light-emitting devices. RSC Adv 2017. [DOI: 10.1039/c7ra07080b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Increment of current efficiency with DT-Ag NPs coated devices was strongly related to energy transfer between radiated light generated from CBP:Ir(mpidmb)2(acac) emissive layer and LSPR excited by DT-Ag NPs layer.
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173
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Tong J, Hu T, Qin A, Sun JZ, Tang BZ. Deciphering the binding behaviours of BSA using ionic AIE-active fluorescent probes. Faraday Discuss 2017; 196:285-303. [DOI: 10.1039/c6fd00165c] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The binding behaviours of a transport protein, bovine serum albumin (BSA), in its native, unfolding and refolding states have been probed by monitoring the emission changes of two exogenous AIE-active fluorescent probes, M2 and M3, which are designed to be anionic and cationic, respectively. Due to their AIE properties, both M2 and M3 display emission enhancement when bound to the hydrophobic cavity of BSA. The binding site of M2 and M3 is found to be subdomain IIA. Then, the BSA + M2 and BSA + M3 systems are utilized to fluorescently signal the conformation changes of BSA caused by various external stimuli, including thermally or chemically induced denaturation. The data confirmed the multi-step unfolding process and the existence of a molten-globule intermediate state. The unfolding process consists of the rearrangement of subdomain IIA, the exposure of a negatively charged binding site in domain I that prefers interacting with cationic species, and the transformation of the molten-globule intermediate into the final random coil. The anionic and cationic modifications of the probes enable us to observe that electrostatic interactions play a role in the folding and unfolding of BSA.
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Affiliation(s)
- Jiaqi Tong
- MoE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Ting Hu
- MoE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Anjun Qin
- Guangdong Innovative Research Team
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- China
| | - Jing Zhi Sun
- MoE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Ben Zhong Tang
- MoE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
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174
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Jiang YW, Gao G, Chen Z, Wu FG. Fluorescence studies on the interaction between chlorpromazine and model cell membranes. NEW J CHEM 2017. [DOI: 10.1039/c7nj00037e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The fluorescence quenching of membrane fluorophores and the fluorescence enhancement of chlorpromazine were simultaneously observed during chlorpromazine–lipid membrane interaction.
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Affiliation(s)
- Yao-Wen Jiang
- State Key Laboratory of Bioelectronics
- School of Biological Science and Medical Engineering
- Southeast University
- Nanjing 210096
- P. R. China
| | - Ge Gao
- State Key Laboratory of Bioelectronics
- School of Biological Science and Medical Engineering
- Southeast University
- Nanjing 210096
- P. R. China
| | - Zhan Chen
- Department of Chemistry
- University of Michigan
- Ann Arbor
- USA
| | - Fu-Gen Wu
- State Key Laboratory of Bioelectronics
- School of Biological Science and Medical Engineering
- Southeast University
- Nanjing 210096
- P. R. China
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175
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Abdelhameed AS, Nusrat S, Ajmal MR, Zakariya SM, Zaman M, Khan RH. A biophysical and computational study unraveling the molecular interaction mechanism of a new Janus kinase inhibitor Tofacitinib with bovine serum albumin. J Mol Recognit 2016; 30. [DOI: 10.1002/jmr.2601] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 11/12/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Ali Saber Abdelhameed
- Department of Pharmaceutical Chemistry, College of Pharmacy; King Saud University; Riyadh Saudi Arabia
| | - Saima Nusrat
- Interdisciplinary Biotechnology Unit; Aligarh Muslim University; Aligarh India
| | | | | | - Masihuz Zaman
- Interdisciplinary Biotechnology Unit; Aligarh Muslim University; Aligarh India
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit; Aligarh Muslim University; Aligarh India
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176
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Li N, Wei D, Wang S, Hu L, Xu W, Du B, Wei Q. Comparative study of the role of extracellular polymeric substances in biosorption of Ni(II) onto aerobic/anaerobic granular sludge. J Colloid Interface Sci 2016; 490:754-761. [PMID: 27988469 DOI: 10.1016/j.jcis.2016.12.006] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 11/19/2016] [Accepted: 12/04/2016] [Indexed: 10/20/2022]
Abstract
This study was carried out to comparatively evaluate the role of extracellular polymeric substances (EPS) in biosorption of Ni(II) onto aerobic/anaerobic granular sludge (AGS and AnGS). Batch sorption experiments data suggested that Ni(II) sorption onto AGS and AnGS were better fitted to Langmuir and Freundlich model, respectively. The contribution of EPS in the sorption of AnGS was higher than that of AGS. Interaction between EPS and Ni(II) was investigated by a combined three-dimensional excitation-emission matrix (3D-EEM), synchronous fluorescence spectra, two-dimensional correlation spectroscopy (2D-COS) and fourier transform infrared spectroscopy (FTIR). 3D-EEM showed that protein (PN)-like substances were the main peaks in EPS from AGS and AnGS. The quenched types of AGS and AnGS in the presence of Ni(II) belonged to dynamic and static quenching, respectively. Additionally, 2D-COS demonstrated that fluorescence change took place sequentially followed to humic-like region>PN-like region in AGS and fulvic-like fraction>PN-like and humic-like fractions in AnGS. According to FTIR spectra, hydroxyl group and amino group in both EPS were the key functional groups for Ni(II) sorption.
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Affiliation(s)
- Na Li
- School of Resources and Environment, University of Jinan, Jinan 250022, PR China
| | - Dong Wei
- School of Resources and Environment, University of Jinan, Jinan 250022, PR China
| | - Shaotong Wang
- School of Resources and Environment, University of Jinan, Jinan 250022, PR China
| | - Lihua Hu
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China
| | - Weiying Xu
- School of Resources and Environment, University of Jinan, Jinan 250022, PR China
| | - Bin Du
- School of Resources and Environment, University of Jinan, Jinan 250022, PR China.
| | - Qin Wei
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China
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177
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Li K, Wei D, Yan T, Du B, Wei Q. Responses of soluble microbial products and extracellular polymeric substances to the presence of toxic 2,6-dichlorophenol in aerobic granular sludge system. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 183:594-600. [PMID: 27623368 DOI: 10.1016/j.jenvman.2016.09.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 08/04/2016] [Accepted: 09/03/2016] [Indexed: 06/06/2023]
Abstract
The objective of this study was to evaluate the responses of soluble microbial products (SMP) and extracellular polymeric substances (EPS) to the presence of toxic 2,6-dichlorophenol (2,6-DCP) in aerobic granular sludge (AGS) system. Batch experiment showed that NH4+-N removal efficiency significantly decreased from 99.6% to 47.2% in the toxic 2,6-DCP of 20 mg/L. Moreover, the inhibition degrees of 2,6-DCP on (SOUR)H, [Formula: see text] and [Formula: see text] were 7.8%, 32.1% and 9.5%, respectively. The main components of SMP, including protein (PN) and polysaccharide (PS) increased from 2.3 ± 0.74 and 16.8 ± 0.12 mg/L to 66.4 ± 0.56 and 18.0 ± 0.19 mg/L in the presence of 2,6-DCP. Three-dimensional excitation-emission matrix (3D-EEM) spectroscopy identified tryptophan PN-like, humic acid-like and fulvic acid-like substances in the control SMP, and their fluorescence intensities increased after exposure to 2,6-DCP. Synchronous fluorescence spectra suggested that the fluorescence quenching between EPS and 2,6-DCP was a static quenching process. The obtained results could provide insightful information on the responses of microbial products to AGS in the presence of toxic chlorophenols.
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Affiliation(s)
- Kai Li
- School of Resources and Environment, University of Jinan, Jinan 250022, PR China
| | - Dong Wei
- School of Resources and Environment, University of Jinan, Jinan 250022, PR China
| | - Tao Yan
- School of Resources and Environment, University of Jinan, Jinan 250022, PR China
| | - Bin Du
- School of Resources and Environment, University of Jinan, Jinan 250022, PR China.
| | - Qin Wei
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China
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178
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Solomonov AV, Shipitsyna MK, Vashurin AS, Rumyantsev EV, Timin AS, Ivanov SP. Analysis of binding ability of two tetramethylpyridylporphyrins to albumin and its complex with bilirubin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 168:12-20. [PMID: 27267279 DOI: 10.1016/j.saa.2016.05.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 05/27/2016] [Accepted: 05/28/2016] [Indexed: 06/06/2023]
Abstract
An interaction between 5,10,15,20-tetrakis-(N-methyl-x-pyridyl)porphyrins, x=2; 4 (TMPyPs) with bovine serum albumin (BSA) and its bilirubin (BR) complex was investigated by UV-Viz and fluorescence spectroscopy under imitated physiological conditions involving molecular docking studies. The parameters of forming intermolecular complexes (binding constants, quenching rate constants, quenching sphere radius etc.) were determined. It was showed that the interaction between proteins and TMPyPs occurs via static quenching of protein fluorescence and has predominantly hydrophobic and electrostatic character. It was revealed that obtained complexes are relatively stable, but in the case of TMPyP4 binding with proteins occurs better than TMPyP2. Nevertheless, both TMPyPs have better binding ability with free protein compared to BRBSA at the same time. The influence of TMPyPs on the conformational changes in protein molecules was studied using synchronous fluorescence spectroscopy. It was found that there is no competition of BR with TMPyPs for binging sites on protein molecule and BR displacement does not occur. Molecular docking calculations have showed that TMPyPs can bind with albumin via tryptophan residue in the hydrophilic binding site of protein molecule but it is not one possible interaction way.
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Affiliation(s)
- Alexey V Solomonov
- Inorganic Chemistry Department, Ivanovo State University of Chemistry and Technology, 7 Sheremetevskij prosp., 153000 Ivanovo, Russian Federation; Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot 7610001, Israel.
| | - Maria K Shipitsyna
- Inorganic Chemistry Department, Ivanovo State University of Chemistry and Technology, 7 Sheremetevskij prosp., 153000 Ivanovo, Russian Federation.
| | - Arthur S Vashurin
- Inorganic Chemistry Department, Ivanovo State University of Chemistry and Technology, 7 Sheremetevskij prosp., 153000 Ivanovo, Russian Federation.
| | - Evgeniy V Rumyantsev
- Inorganic Chemistry Department, Ivanovo State University of Chemistry and Technology, 7 Sheremetevskij prosp., 153000 Ivanovo, Russian Federation.
| | - Alexander S Timin
- Inorganic Chemistry Department, Ivanovo State University of Chemistry and Technology, 7 Sheremetevskij prosp., 153000 Ivanovo, Russian Federation; Tomsk Polytechnic University, RASA Center in Tomsk, 30, Lenin Avenue, 634500 Tomsk, Russian Federation.
| | - Sergey P Ivanov
- Ufa Institute of Chemistry of the Russian Academy of Sciences, Prosp. Oktyabrya 71, Ufa 450045, Russian Federation.
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179
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Farhadian S, Shareghi B, Saboury AA, Babaheydari AK, Raisi F, heidari E. Molecular aspects of the interaction of spermidine and α-chymotrypsin. Int J Biol Macromol 2016; 92:523-532. [DOI: 10.1016/j.ijbiomac.2016.07.069] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 07/18/2016] [Accepted: 07/21/2016] [Indexed: 12/17/2022]
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180
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Buddanavar AT, Nandibewoor ST. Multi-spectroscopic characterization of bovine serum albumin upon interaction with atomoxetine. J Pharm Anal 2016; 7:148-155. [PMID: 29404031 PMCID: PMC5790691 DOI: 10.1016/j.jpha.2016.10.001] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 10/07/2016] [Accepted: 10/14/2016] [Indexed: 01/16/2023] Open
Abstract
The quenching interaction of atomoxetine (ATX) with bovine serum albumin (BSA) was studied in vitro under optimal physiological condition (pH=7.4) by multi-spectroscopic techniques. The mechanism of ATX-BSA system was a dynamic quenching process and was confirmed by the fluorescence spectra and lifetime measurements. The number of binding sites, binding constants and other binding characteristics were computed. Thermodynamic parameters ∆H° and ∆S° indicated that intermolecular hydrophobic forces predominantly stabilized the drug-protein system. The average binding distance between BSA and ATX was studied by Försters theory. UV-absorption, Fourier transform infrared spectroscopy (FT-IR), circular dichroism (CD), synchronous spectra and three-dimensional (3D) fluorescence spectral results revealed the changes in micro-environment of secondary structure of protein upon the interaction with ATX. Displacement of site probes and the effects of some common metal ions on the binding of ATX with BSA interaction were also studied.
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181
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Li CH, Tao X, Jiang JH, Li X, Xiao SX, Tao LM, Zhou JF, Zhang H, Xie MA, Zhu Y, Xia Z, Tang SM, Yuan HM, Li QG. Synthesis, crystal structure and spectroscopic studies of bismuth(III) complex with 2-substituted benzimidazole ligands. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 166:56-61. [PMID: 27208760 DOI: 10.1016/j.saa.2016.04.058] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 04/16/2016] [Accepted: 04/27/2016] [Indexed: 06/05/2023]
Abstract
Reaction of BiCl3 with 2-(2-hydroxy-3-methoxyphenyl)benzimidazole (HL) in tetrahydrofuran (THF) under reflux gave mononuclear complex of formula [Bi(HL)2Cl3·H2O]. The binding interaction of the complex with bovine serum albumin (BSA) was investigated using the fluorescence quenching method. The experimental results showed that the complex could bind to BSA in the proportion of about 1:1. The binding reaction was spontaneous and hydrophobic force played major role in the reaction. The binding of the complex to BSA could change the microenvironment and conformation of BSA.
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Affiliation(s)
- Chuan-Hua Li
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Xu Tao
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Jian-Hong Jiang
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Xu Li
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Sheng-Xiong Xiao
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Li-Ming Tao
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Ju-Feng Zhou
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Hui Zhang
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Ming-An Xie
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Yi Zhu
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Zi Xia
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Si-Min Tang
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Han-Meng Yuan
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China
| | - Qiang-Guo Li
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, Department of Chemistry and Life Science, Xiangnan University, Chenzhou 423000, Hunan, PR China.
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182
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Momeni L, Shareghi B, Saboury AA, Farhadian S. Comparative Studies on the Interaction of Spermidine with Bovine Trypsin by Multispectroscopic and Docking Methods. J Phys Chem B 2016; 120:9632-41. [DOI: 10.1021/acs.jpcb.6b06648] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lida Momeni
- Department
of Biology, Faculty of Science, University of Payam Noor, Tehran 19166, Iran
| | - Behzad Shareghi
- Department
of Biology, Faculty of Science, University of Shahrekord, P.O. Box 11, Shahrekord 88186/34141, Iran
| | | | - Sadegh Farhadian
- Department
of Biology, Faculty of Science, University of Shahrekord, P.O. Box 11, Shahrekord 88186/34141, Iran
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183
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Molecular insight into the Grandivitin- matrix metalloproteinase 9 interactions. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 162:493-499. [PMID: 27454459 DOI: 10.1016/j.jphotobiol.2016.07.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Accepted: 07/16/2016] [Indexed: 11/23/2022]
Abstract
Grandivitin (GRA), a natural coumarin, can inhibit Matrix metalloproteinase 9 (MMP9). Binding characteristics are therefore of interest for pharmacodynamics of GRA and coumarin derivatives. A combination of spectroscopic methods and molecular modeling techniques was used to characterize interaction of GRA with MMP9. Fluorescence spectroscopy showed that GRA could quench the MMP9 fluorescence spectra. Changes in the UV-Vis and FT-IR spectra were observed upon ligand binding along with a significant degree of tryptophan fluorescence quenching on complex formation. Fluorescence studies showed that GRA has an ability to quench the intrinsic fluorescence of MMP9. Molecular modeling analysis showed that GRA to be bound in the large hydrophobic cavity of MMP9. Further investigation of the binding site of GRA within the MMP9 molecule suggested that hydrophobic contacts, hydrogen bond formation and electrostatic interactions account for the binding of GRA. According molecular dynamics (MD) simulation results the ligand can interact with the protein, with affecting the secondary structure of MMP9 and with a modification of its tertiary structure. The biological significance of this work is evident because MMP9 serves as a potential target protein for anticancer agents. The binding study of GRA with MMP9 is of great importance in pharmacy, pharmacology and biochemistry. This work can provide some key data to clinical research and supply the theoretical basis for the new drug candidate designing.
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184
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Nusrat S, Siddiqi MK, Zaman M, Zaidi N, Ajmal MR, Alam P, Qadeer A, Abdelhameed AS, Khan RH. A Comprehensive Spectroscopic and Computational Investigation to Probe the Interaction of Antineoplastic Drug Nordihydroguaiaretic Acid with Serum Albumins. PLoS One 2016; 11:e0158833. [PMID: 27391941 PMCID: PMC4938263 DOI: 10.1371/journal.pone.0158833] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Accepted: 06/22/2016] [Indexed: 11/19/2022] Open
Abstract
Exogenous drugs that are used as antidote against chemotheray, inflammation or viral infection, gets absorbed and interacts reversibly to the major serum transport protein i.e. albumins, upon entering the circulatory system. To have a structural guideline in the rational drug designing and in the synthesis of drugs with greater efficacy, the binding mechanism of an antineoplastic and anti-inflammatory drug Nordihydroguaiaretic acid (NDGA) with human and bovine serum albumins (HSA & BSA) were examined by spectroscopic and computational methods. NDGA binds to site II of HSA with binding constant (Kb) ~105 M-1 and free energy (ΔG) ~ -7.5 kcal.mol-1. It also binds at site II of BSA but with lesser binding affinity (Kb) ~105 M-1 and ΔG ~ -6.5 kcal.mol-1. The negative value of ΔG, ΔH and ΔS for both the albumins at three different temperatures confirmed that the complex formation process between albumins and NDGA is spontaneous and exothermic. Furthermore, hydrogen bonds and hydrophobic interactions are the main forces involved in complex formation of NDGA with both the albumins as evaluated from fluorescence and molecular docking results. Binding of NDGA to both the albumins alter the conformation and causes minor change in the secondary structure of proteins as indicated by the CD spectra.
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Affiliation(s)
- Saima Nusrat
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh– 202002, India
| | | | - Masihuz Zaman
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh– 202002, India
| | - Nida Zaidi
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh– 202002, India
| | - Mohammad Rehan Ajmal
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh– 202002, India
| | - Parvez Alam
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh– 202002, India
| | - Atiyatul Qadeer
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh– 202002, India
| | - Ali Saber Abdelhameed
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh, 11451, Saudi Arabia
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh– 202002, India
- * E-mail:
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185
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Abdelhameed AS, Ajmal MR, Ponnusamy K, Subbarao N, Khan RH. Interaction of the recently approved anticancer drug nintedanib with human acute phase reactant α 1-acid glycoprotein. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.02.048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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186
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Ajmal MR, Zaidi N, Alam P, Nusrat S, Siddiqi MK, Badr G, Mahmoud MH, Khan RH. Insight into the interaction of antitubercular and anticancer compound clofazimine with human serum albumin: spectroscopy and molecular modelling. J Biomol Struct Dyn 2016; 35:46-57. [DOI: 10.1080/07391102.2015.1132258] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Mohammad Rehan Ajmal
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Nida Zaidi
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Parvez Alam
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Saima Nusrat
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | | | - Gamal Badr
- Laboratory of Immunology and Molecular Physiology, Zoology Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt
| | - Mohamed H. Mahmoud
- Deanship of Scientific Research, King Saud University, Riyadh, Saudi Arabia
- Food Science and Nutrition Department, National Research Center, Dokki, Cairo, Egypt
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
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187
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Farhadian S, Shareghi B, Saboury AA. Exploring the thermal stability and activity of α-chymotrypsin in the presence of spermine. J Biomol Struct Dyn 2016; 35:435-448. [DOI: 10.1080/07391102.2016.1147984] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Sadegh Farhadian
- Faculty of Science, Department of Biology, University of Shahrekord, Shahrekord, P. O. Box. 115, Iran
| | - Behzad Shareghi
- Faculty of Science, Department of Biology, University of Shahrekord, Shahrekord, P. O. Box. 115, Iran
| | - Ali A. Saboury
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
- Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran
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188
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Chatterjee S, Kumar GS. Binding of fluorescent acridine dyes acridine orange and 9-aminoacridine to hemoglobin: Elucidation of their molecular recognition by spectroscopy, calorimetry and molecular modeling techniques. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 159:169-78. [PMID: 27077554 DOI: 10.1016/j.jphotobiol.2016.03.045] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 03/29/2016] [Indexed: 11/27/2022]
Abstract
The molecular interaction between hemoglobin (HHb), the major human heme protein, and the acridine dyes acridine orange (AO) and 9-aminoacridine (9AA) was studied by various spectroscopic, calorimetric and molecular modeling techniques. The dyes formed stable ground state complex with HHb as revealed from spectroscopic data. Temperature dependent fluorescence data showed the strength of the dye-protein complexation to be inversely proportional to temperature and the fluorescence quenching was static in nature. The binding-induced conformational change in the protein was investigated using circular dichroism, synchronous fluorescence, 3D fluorescence and FTIR spectroscopy results. Circular dichroism data also quantified the α-helicity change in hemoglobin due to the binding of acridine dyes. Calorimetric studies revealed the binding to be endothermic in nature for both AO and 9AA, though the latter had higher affinity, and this was also observed from spectroscopic data. The binding of both dyes was entropy driven. pH dependent fluorescence studies revealed the existence of electrostatic interaction between the protein and dye molecules. Molecular modeling studies specified the binding site and the non-covalent interactions involved in the association. Overall, the results revealed that a small change in the acridine chromophore leads to remarkable alteration in the structural and thermodynamic aspects of binding to HHb.
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Affiliation(s)
- Sabyasachi Chatterjee
- Biophysical Chemistry Laboratory, Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata 700 032, India
| | - Gopinatha Suresh Kumar
- Biophysical Chemistry Laboratory, Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata 700 032, India.
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189
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190
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Maurya JK, Mir MUH, Maurya N, Dohare N, Ali A, Patel R. A spectroscopic and molecular dynamic approach on the interaction between ionic liquid type gemini surfactant and human serum albumin. J Biomol Struct Dyn 2016; 34:2130-45. [DOI: 10.1080/07391102.2015.1109552] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jitendra Kumar Maurya
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi, India
| | - Muzaffar Ul Hassan Mir
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi, India
| | - Neha Maurya
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi, India
| | - Neeraj Dohare
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi, India
| | - Anwar Ali
- Department of Chemistry, Jamia Millia Islamia (A Central University), New Delhi, India
| | - Rajan Patel
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi, India
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191
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Influence of the methyl position on the binding of 5-epi-taiwaniaquinone G to HSA investigated by spectrofluorimetry and molecular modeling. Med Chem Res 2016. [DOI: 10.1007/s00044-016-1547-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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192
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Jattinagoudar L, Meti M, Nandibewoor S, Chimatadar S. Evaluation of the binding interaction between bovine serum albumin and dimethyl fumarate, an anti-inflammatory drug by multispectroscopic methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 156:164-171. [PMID: 26688208 DOI: 10.1016/j.saa.2015.11.026] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 05/06/2015] [Accepted: 11/25/2015] [Indexed: 06/05/2023]
Abstract
The information of the quenching reaction of bovine serum albumin with dimethyl fumarate is obtained by multi-spectroscopic methods. The number of binding sites, n and binding constants, KA were determined at different temperatures. The effect of increasing temperature on Stern-Volmer quenching constants (KD) indicates that a dynamic quenching mechanism is involved in the interaction. The analysis of thermodynamic quantities namely, ∆H° and ∆S° suggested hydrophobic forces playing a major role in the interaction between dimethyl fumarate and bovine serum albumin. The binding site of dimethyl fumarate on bovine serum albumin was determined by displacement studies, using the site probes viz., warfarin, ibuprofen and digitoxin. The determination of magnitude of the distance of approach for molecular interactions between dimethyl fumarate and bovine serum albumin is calculated according to the theory of Förster energy transfer. The CD, 3D fluorescence spectra, synchronous fluorescence measurements and FT-IR spectral results were indicative of the change in secondary structure of the protein. The influence of some of the metal ions on the binding interaction was also studied.
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Affiliation(s)
- Laxmi Jattinagoudar
- P.G. Department of Studies in Chemistry, Karnatak University, Dharwad 580 003, India
| | - Manjunath Meti
- P.G. Department of Studies in Chemistry, Karnatak University, Dharwad 580 003, India
| | | | - Shivamurti Chimatadar
- P.G. Department of Studies in Chemistry, Karnatak University, Dharwad 580 003, India.
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193
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Tian Z, Huang Y, Zhang Y, Song L, Qiao Y, Xu X, Wang C. Spectroscopic and molecular modeling methods to study the interaction between naphthalimide-polyamine conjugates and DNA. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 158:1-15. [PMID: 26926663 DOI: 10.1016/j.jphotobiol.2016.01.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 01/29/2016] [Indexed: 11/28/2022]
Abstract
The effect of polyamine side chains on the interaction between naphthalimide-polyamine conjugates (1-7) and herring sperm DNA was studied by UV/vis absorption and fluorescent spectra under physiological conditions (pH=7.4). The diverse spectral data and further molecular docking simulation in silico indicated that the aromatic moiety of these compounds could intercalate into the DNA base pairs while the polyamine motif might simultaneously locate in the minor groove. The triamine compound 7 can interact more potently with DNA than the corresponding diamine compounds (1-6). The presence of the bulky terminal group in the diamine side chain reduced the binding strength of compound 1 with DNA, compared to other diamine compounds (2-6). In addition, the increasing methylene number in the diamine backbone generally results in the elevated binding constant of compounds-DNA complex. The fluorescent tests at different temperature revealed that the quenching mechanism was a static type. The binding constant and thermodynamic parameter showed that the binding strength and the type of interaction force, associated with the side chains, were mainly hydrogen bonding and hydrophobic force. And the calculated free binding energies of molecular docking are generally consistent with the stability of polyamine-DNA complexes. The circular dichroism assay about the impact of compounds 1-7 on DNA conformation testified the B to A-like conformational change.
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Affiliation(s)
- Zhiyong Tian
- Institute of Chemical Biology, Henan University, Kaifeng 475004, China
| | - Yingying Huang
- Institute of Chemical Biology, Henan University, Kaifeng 475004, China
| | - Yan Zhang
- Institute of Chemical Biology, Henan University, Kaifeng 475004, China
| | - Lina Song
- Institute of Chemical Biology, Henan University, Kaifeng 475004, China
| | - Yan Qiao
- Basic Medical College, Zhengzhou University, Zhengzhou, 475008, China; State Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Xuejun Xu
- Basic Medical College, Zhengzhou University, Zhengzhou, 475008, China; The Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, china.
| | - Chaojie Wang
- The Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, china.
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194
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Esteghamat-Panah R, Farrokhpour H, Hadadzadeh H, Abyar F, Rudbari HA. An experimental and quantum chemical study on the non-covalent interactions of a cyclometallated Rh(iii) complex with DNA and BSA. RSC Adv 2016. [DOI: 10.1039/c5ra24540k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The interaction of a new cyclometallated Rh(iii) complex with DNA and BSA was investigated. The three-layer ONIOM method was employed to calculate the interaction energy between DNA and the complex.
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Affiliation(s)
| | - Hossein Farrokhpour
- Department of Chemistry
- Isfahan University of Technology
- Isfahan 84156-83111
- Iran
| | - Hassan Hadadzadeh
- Department of Chemistry
- Isfahan University of Technology
- Isfahan 84156-83111
- Iran
| | - Fatemeh Abyar
- Department of Engineering
- Ardakan University
- Ardakan 89518-95491
- Iran
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195
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YAN J, HUANG X, LIU S, YANG J, YUAN Y, DUAN R, ZHANG H, HU X. A Simple and Sensitive Method for Auramine O Detection Based on the Binding Interaction with Bovin Serum Albumin. ANAL SCI 2016; 32:819-24. [DOI: 10.2116/analsci.32.819] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Jingjing YAN
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
| | - Xin HUANG
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
| | - Shaopu LIU
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
| | - Jidong YANG
- College of Chemical and Environmental Engineering, Chongqing Three Gorges University
| | - Yusheng YUAN
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
| | - Ruilin DUAN
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
| | - Hui ZHANG
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
| | - Xiaoli HU
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
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196
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Farhadian S, Shareghi B, Saboury AA, Momeni L. Counteraction of lactose on the thermal stability and activity of α-chymotrypsin: thermodynamic, kinetic and docking studies. RSC Adv 2016. [DOI: 10.1039/c6ra11833j] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Stabilized aqueous solutions of α-chymotrypsin have a therapeutic utility in the treatment of certain forms of asthma, bronchitis, rhinitis, sinusitis, as well as certain dermatological conditions such as leg ulcers and ringworm.
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Affiliation(s)
- Sadegh Farhadian
- Department of Biology
- Faculty of Science
- University of Shahrekord
- Shahrekord
- Iran
| | - Behzad Shareghi
- Department of Biology
- Faculty of Science
- University of Shahrekord
- Shahrekord
- Iran
| | - Ali A. Saboury
- Institute of Biochemistry and Biophysics
- University of Tehran
- Tehran
- Iran
- Center of Excellence in Biothermodynamics
| | - Lida Momeni
- Department of Biology
- Faculty of Science
- University of Payam Noor
- Iran
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197
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Das K, Rawat K, Bohidar HB. Surface patch binding induced interaction of anisotropic nanoclays with globular plasma proteins. RSC Adv 2016. [DOI: 10.1039/c6ra11669h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Morphology dependent interaction of model anisotropic nanoparticles with globular plasma proteins.
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Affiliation(s)
- Kishan Das
- School of Physical Sciences
- Jawaharlal Nehru University
- New Delhi 110067
- India
| | - Kamla Rawat
- Special Center for Nanosciences
- Jawaharlal Nehru University
- New Delhi 110067
- India
- Inter University Accelerator Centre (IUAC)
| | - H. B. Bohidar
- School of Physical Sciences
- Jawaharlal Nehru University
- New Delhi 110067
- India
- Special Center for Nanosciences
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198
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Analysis of aceclofenac and bovine serum albumin interaction using fluorescence quenching method for predictive, preventive, and personalized medicine. EPMA J 2015; 6:24. [PMID: 26668672 PMCID: PMC4677438 DOI: 10.1186/s13167-015-0047-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 12/03/2015] [Indexed: 11/10/2022]
Abstract
Background The study of the interaction of a drug with plasma protein is very important because drug-protein binding plays an important role in determination of pharmacological and toxicological properties of drugs. Our study was designed to investigate the interaction between aceclofenac and bovine serum albumin (BSA) using fluorescence spectroscopy at different temperatures (298 and 308 K). Methods Fluorescence spectroscopy was used to carry out the study. Fluorescence quenching constant was determined from Stern-Volmer equation. Van’t Hoff equation was used to determine the thermodynamic parameters such as free energy (ΔG), enthalpy (ΔH), and entropy (ΔS). Results The experimental data showed that the quenching of BSA by aceclofenac was due to a formation of a BSA-aceclofenac complex with probable involvement of both tryptophan and tyrosine residues of BSA. Dynamic quenching was shown for BSA by aceclofenac at the experimental conditions. The values of thermodynamic parameters indicated that the hydrophobic forces played major roles for BSA-aceclofenac complexation. The binding number (n) was found to be ≈1 indicating that 1 mol of BSA bound with 1 mol of aceclofenac. The binding affinity of aceclofenac to BSA was calculated at different temperatures. It was shown that the binding constant decreased with increasing temperatures indicating that stability of the BSA-aceclofenac complex decreased with increasing temperatures. Conclusions The interaction of aceclofenac with BSA was successfully explored using a fluorescence spectroscopic technique.
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199
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Spectral, electrochemical and molecular docking methods to get an understanding of supramolecular chemistry of sulfa drugs to biomolecules. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.10.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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200
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Yu X, Jiang B, Xun C, Yao Q. Interaction between fasudil hydrochloride and bovine serum albumin: spectroscopic study. LUMINESCENCE 2015; 31:986-91. [PMID: 26554343 DOI: 10.1002/bio.3062] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 10/16/2015] [Accepted: 10/18/2015] [Indexed: 11/11/2022]
Abstract
The interaction between fasudil hydrochloride (FSD) and bovine serum albumin (BSA) was investigated using fluorescence and ultraviolet spectroscopy under imitated physiological conditions. The Stern-Volmer quenching model has been successfully applied and the results revealed that FSD could quench the intrinsic fluorescence of BSA effectively via static quenching. The binding constants and binding sites for the BSA-FSD system were evaluated. The corresponding thermodynamic parameters obtained at different temperatures indicated that hydrophobic force played a major role in the interaction of FSD and BSA. The distance between the donor (BSA) and the acceptor (FSD) was obtained according to fluorescence resonance energy transfer (FRET). Synchronous fluorescence spectroscopy and FT-IR spectra showed that the conformation of BSA was changed in the presence of FSD. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Xianyong Yu
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule, Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China.,Key Laboratory of Computational Physical Sciences, Fudan University, Ministry of Education, Shanghai, People's Republic of China
| | - Bingfei Jiang
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule, Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Caifang Xun
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule, Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Qing Yao
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule, Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
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