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Hu ZY, Sui HY, Zhong QF, Hu L, Shi JH, Jiang SL, Han L. In vitro investigation of the binding characteristics of dacomitinib to human α 1-acid glycoprotein: Multispectral and computational modeling. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 314:124197. [PMID: 38554689 DOI: 10.1016/j.saa.2024.124197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 03/10/2024] [Accepted: 03/26/2024] [Indexed: 04/02/2024]
Abstract
Dacomitinib is a highly selective second-generation tyrosine kinase inhibitor that can irreversibly bind to tyrosine kinase and is mainly used in the treatment of lung cancer. The binding characteristics of dacomitinib with human α 1-acid glycoprotein (HAG) were analyzed by multispectral and computational simulation techniques. The fluorescence spectra showed that dacomitinib can quench the fluorescence of HAG by forming the HAG-dacomitinib complex with a molar ratio of 1:1 (static quenching). At the temperature similar to that of the human body, the affinity of dacomitinib to HAG (8.95 × 106 M-1) was much greater than that to BSA (3.39 × 104 M-1), indicating that dacomitinib will give priority to binding onto HAG. Thermodynamics parameters analysis and driving force competition experiments showed that hydrogen bonding and hydrophobic forces were the major sources for keeping the complex of HAG-dacomitinib stable. The experimental outcomes also showed that the binding of dacomitinib can lead to the loosening of the skeleton structure of HAG, which led to a slight change in the secondary structure, and also reduces the hydrophobicity of the microenvironment of Trp and Tyr residues. The binding sites of dacomitinib on HAG and the contribution of key amino acid residues to the binding reaction were determined by molecular docking and molecular dynamics (MD) simulation. In addition, it was found that there was a synergistic effect between dacomitinib and Mg2+ and Co2+ ions. Mg2+ and Co2+ could increase the Kb of dacomitinib to HAG and prolong the half-life of dacomitinib.
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Affiliation(s)
- Zhe-Ying Hu
- College of Pharmaceutic Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Huan-Yu Sui
- College of Pharmaceutic Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Qi-Feng Zhong
- College of Pharmaceutic Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Lu Hu
- College of Pharmaceutic Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jie-Hua Shi
- College of Pharmaceutic Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Shao-Liang Jiang
- College of Pharmaceutic Science, Zhejiang University of Technology, Hangzhou 310032, China.
| | - Liang Han
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China.
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2
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Lophine-cinnamoyl hybrids: Synthesis, photophysical properties and a spectroscopic and molecular dynamics approach towards interactions with bovine serum albumin. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120376] [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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3
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Wang X, Wang S, Xu D, Peng J, Gao W, Cao Y. The Effect of Glycosylated Soy Protein Isolate on the Stability of Lutein and Their Interaction Characteristics. Front Nutr 2022; 9:887064. [PMID: 35685872 PMCID: PMC9172447 DOI: 10.3389/fnut.2022.887064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 04/11/2022] [Indexed: 11/18/2022] Open
Abstract
Lutein is a natural fat-soluble carotenoid with various physiological functions. However, its poor water solubility and stability restrict its application in functional foods. The present study sought to analyze the stability and interaction mechanism of the complex glycosylated soy protein isolate (SPI) prepared using SPI and inulin-type fructans and lutein. The results showed that glycosylation reduced the fluorescence intensity and surface hydrophobicity of SPI but improved the emulsification process and solubility. Fluorescence intensity and ultraviolet–visible (UV–Vis) absorption spectroscopy results showed that the fluorescence quenching of the glycosylated soybean protein isolate by lutein was static. Through thermodynamic parameter analysis, it was found that lutein and glycosylated SPI were bound spontaneously through hydrophobic interaction, and the binding stoichiometry was 1:1. The X-ray diffraction analysis results showed that lutein existed in the glycosylated soybean protein isolate in an amorphous form. The Fourier transform infrared spectroscopy analysis results revealed that lutein had no effect on the secondary structure of glycosylated soy protein isolate. Meanwhile, the combination of lutein and glycosylated SPI improved the water solubility of lutein and the stability of light and heat.
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Affiliation(s)
- Xia Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health (BTBU), School of Food and Health, Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing Technology and Business University (BTBU), Beijing, China
| | - Shaojia Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health (BTBU), School of Food and Health, Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing Technology and Business University (BTBU), Beijing, China
| | - Duoxia Xu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health (BTBU), School of Food and Health, Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing Technology and Business University (BTBU), Beijing, China
| | - Jingwei Peng
- Chenguang Biotech Group Co., Ltd., Handan, China
| | - Wei Gao
- Chenguang Biotech Group Co., Ltd., Handan, China
| | - Yanping Cao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health (BTBU), School of Food and Health, Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing Technology and Business University (BTBU), Beijing, China
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4
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Bayraktutan T, Gür B, Onganer Y. A new FRET-based functional chemosensor for fluorometric detection of Fe3+and its validation through in silico studies. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132448] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Exploring the binding mode between potassium bromate and Bovine serum Albumin: Multi-Spectroscopic and molecular modeling analysis. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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6
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Li Y, Zhou Y, Wang T, Long K, Zhang Y, Wang W. Photoenhanced cytosolic protein delivery based on a photocleavable group-modified dendrimer. NANOSCALE 2021; 13:17784-17792. [PMID: 34668505 DOI: 10.1039/d1nr04430c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Numerous recently developed therapies have highlighted the advantages of using proteins as therapeutics. However, in many protein delivery systems, the complicated carrier designs, low loading content, and off-targeting effects have limited their clinical applications. Here we report a photoresponsive protein-binding moiety and use it to prepare a simple nanoscale protein delivery system with high delivery efficiency and photoenhanced cellular uptake of proteins. The carrier was prepared by modifying a photocleavable molecule, DEACM, onto the surface of a cationic dendrimer, poly(amidoamine). DEACM simultaneously contributed to protein binding, self-assembly, and photocontrollability of the system. The multi-functional DEACM enabled the simplicity of the protein delivery system, which does not require complex organic synthesis or protein modification. The high delivery efficiency, high serum tolerance, and photoenhanced cellular uptake have been proved with functional proteins, presenting the potential for delivering protein therapeutics.
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Affiliation(s)
- Yafei Li
- State Key Laboratory of Pharmaceutical Biotechnology & Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine & Dr. Li Dak-Sum Research Centre, The University of Hong Kong, Hong Kong SAR, China.
| | - Yang Zhou
- State Key Laboratory of Pharmaceutical Biotechnology & Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine & Dr. Li Dak-Sum Research Centre, The University of Hong Kong, Hong Kong SAR, China.
| | - Tianyi Wang
- State Key Laboratory of Pharmaceutical Biotechnology & Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine & Dr. Li Dak-Sum Research Centre, The University of Hong Kong, Hong Kong SAR, China.
| | - Kaiqi Long
- State Key Laboratory of Pharmaceutical Biotechnology & Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine & Dr. Li Dak-Sum Research Centre, The University of Hong Kong, Hong Kong SAR, China.
| | - Yaming Zhang
- State Key Laboratory of Pharmaceutical Biotechnology & Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine & Dr. Li Dak-Sum Research Centre, The University of Hong Kong, Hong Kong SAR, China.
| | - Weiping Wang
- State Key Laboratory of Pharmaceutical Biotechnology & Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine & Dr. Li Dak-Sum Research Centre, The University of Hong Kong, Hong Kong SAR, China.
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7
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Yu X, Cai X, Li S, Luo L, Wang J, Wang M, Zeng L. Studies on the interactions of theaflavin-3,3'-digallate with bovine serum albumin: Multi-spectroscopic analysis and molecular docking. Food Chem 2021; 366:130422. [PMID: 34392082 DOI: 10.1016/j.foodchem.2021.130422] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 05/26/2021] [Accepted: 06/17/2021] [Indexed: 01/31/2023]
Abstract
Tea cream, produced by interactions among tea ingredients, is undesirable in tea beverage industry. The interaction between bovine serum albumin (BSA) and theaflavin-3,3'-digallate (TFDG, an important component in tea cream and functional substance of black tea) was investigated by fluorescence spectroscopy, ultraviolet-visible (UV-vis) absorption spectroscopy, synchronous fluorescence spectroscopy, fourier-transform infrared (FT-IR) spectroscopy, and molecular docking technique. Multi-spectroscopic experiments demonstrated that TFDG interacted with BSA via static quenching, and the microenvironment around BSA became more hydrophobicity. FT-IR showed that the α-helix of BSA was increased when binding with TFDG. Thermodynamic parameters and molecular docking demonstrated that hydrophobic interactions and hydrogen bonds dominated the interaction between TFDG and BSA. The mechanism proposed in this research could further develop some nanoparticles to excellent biochemical properties while reducing the formation of tea cream, and explore the potential of BSA as transport carrier for TFDG.
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Affiliation(s)
- Xia Yu
- College of Food Science, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, People's Republic of China
| | - Xinghong Cai
- School of Materials and Energy, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, People's Republic of China
| | - Shuang Li
- Kaijiang County Bureau of Agricultural and Rural Affairs, Kaijiang County, Dazhou 635000, People's Republic of China
| | - Liyong Luo
- College of Food Science, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, People's Republic of China; Tea Research Institute, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, People's Republic of China
| | - Jie Wang
- Tea Research Institute of Chongqing Academy of Agricultural Science, Yongchuan District, Chongqing 402160, People's Republic of China
| | - Min Wang
- School of Materials and Energy, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, People's Republic of China.
| | - Liang Zeng
- College of Food Science, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, People's Republic of China; Tea Research Institute, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, People's Republic of China.
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8
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Nasiri F, Dehghan G, Shaghaghi M, Datmalchi S, Iranshahi M. Probing the interaction between 7-geranyloxycoumarin and bovine serum albumin: Spectroscopic analyzing and molecular docking study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 254:119664. [PMID: 33743310 DOI: 10.1016/j.saa.2021.119664] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 02/08/2021] [Accepted: 03/01/2021] [Indexed: 06/12/2023]
Abstract
7-Geranyloxycoumarin (auraptene; AUR), as a potent phytochemical, is the naturally abundant prenyloxycoumarin found in many genera of the Rutaceae family. As the interaction with serum albumins may play a crucial role in identifying their pharmacological properties, we investigated AUR binding profile with bovine serum albumin (BSA) by experimental and computational methods. Binding constant, binding site, mode of binding, and the BSA structural change upon AUR addition, were studied. UV-vis spectroscopy results and fluorescence quenching analysis proposed that AUR can form the ground state complex with BSA. Meantime, thermodynamic parameters (negative ΔH and ΔS values) revealed that hydrogen bonds and van der Waals interactions play major role, as intermolecular forces, in the AUR-BSA complex formation. Synchronous fluorescence spectra and circular dichroism (CD) data showed that the secondary structure of BSA did not change significantly in the presence of AUR. Moreover, molecular docking results showed that AUR binds to the subdomain IIIB of BSA.
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Affiliation(s)
- Farid Nasiri
- Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Gholamreza Dehghan
- Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran.
| | - Masoomeh Shaghaghi
- Department of Chemistry, Payame Noor University, P.O. Box 19395-3697, Tehran, Iran
| | - Siavash Datmalchi
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; School of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehrdad Iranshahi
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
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9
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Paul S, Roy P, Das S, Ghosh S, Sardar PS, Majhi A. Addressing the Exigent Role of a Coumarin Fluorophore toward Finding the Suitable Microenvironment of Biomimicking and Biomolecular Systems: Steering to Project the Drug Designing and Drug Delivery Study. ACS OMEGA 2021; 6:11878-11896. [PMID: 34056342 PMCID: PMC8153980 DOI: 10.1021/acsomega.0c06152] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 04/09/2021] [Indexed: 06/12/2023]
Abstract
The photophysics of 4-azidocoumarin (4-AC), a novel fluorescent coumarin derivative, is well established by the investigation of the alteration of the microheterogeneous environment comprising two types of systems: supramolecular systems, cyclodextrins (CDs), and biomolecular systems, serum albumins (SAs). The enhanced emission of the ligand with the organized assemblies like α-CD, β-CD, and γ-CD by steady-state and time-resolved fluorescence and fluorescence anisotropy at 298 K is compared with those of bovine serum albumin (BSA) and human serum albumin (HSA). The remarkable enhancement of the emission of ligand 4-AC along with the blue shift of the emission for both the systems are visualized as the incorporation of 4-AC into the hydrophobic core of the CDs and proteins mainly due to reduction of nonradiative decay process in the hydrophobic interior of CDs and SAs. The binding constants at 298 K and the single binding site are estimated using enhanced emission and anisotropy of the bound ligand in both the systems. The marked enhancement of the fluorescence anisotropy indicates that the ligand molecule experiences a motionally constrained environment within the CDs and SAs. Rotational correlation time (θc) of the bound ligand 4-AC is calculated in both the categories of the confined environment using time-resolved anisotropy at 298 K. Molecular docking studies for both the variety of complexes of the ligand throw light to assess the location of the ligand and the microenvironment around the ligand in the ligand-CD and ligand-protein complexes. Solvent variation study of the probe 4-AC molecule in different polar protic and aprotic solvents clearly demonstrates the polarity and hydrogen-bonding ability of the solvents, which supports the alteration of the microenvironments around 4-AC due to binding with the biomimicking as well as biomolecular systems. Dynamic light scattering is employed to determine the hydrodynamic diameter of free BSA/HSA and complexes of BSA/HSA with the ligand 4-AC.
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Affiliation(s)
- Sandip Paul
- Department
of Chemistry, Presidency University, 86/1 College Street, Kolkata 700 073, India
| | - Pritam Roy
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
| | - Sourav Das
- Centre
for Surface Science, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, West Bengal, India
| | - Soumen Ghosh
- Centre
for Surface Science, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, West Bengal, India
| | - Pinki Saha Sardar
- Department
of Chemistry, The Bhawanipur Education Society
College, Kolkata 700020, India
| | - Anjoy Majhi
- Department
of Chemistry, Presidency University, 86/1 College Street, Kolkata 700 073, India
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10
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İnal EK. A Fluorescent Chemosensor Based on Schiff Base for the Determination of Zn 2+, Cd 2+and Hg 2. J Fluoresc 2020; 30:891-900. [PMID: 32494939 DOI: 10.1007/s10895-020-02563-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Accepted: 05/25/2020] [Indexed: 12/19/2022]
Abstract
Metal complexes were obtained by the reaction of zinc, cadmium and mercury(II) salts with Schiff base HL (N(salicylidene)benzylamine). HL was synthesized by the condensation reaction of benzylamine and 2-hydroxybenzaldehyde. The fluorescence properties of the Schiff base and its metal complexes were studied in ethanol-water solutions. HL was examined for its utility as a fuorescent chemosensor for the determination of Zn2+, Cd2+ and Hg2+ in aqueous samples. The HL chemosensor was found to be sensitive to Zn2+, Cd2+ and Hg2+ than some metal ions and its complexes emitted strong fluorescence at 452 nm for Zn2+ at 474 nm for Cd2+ and at 491 nm for Hg2+, respectively. It was determined that HL forms complexes with a ratio of 2:1 for Zn2+ and Hg2+ and with a ratio of 1:1 for Cd2+ by Job plots. For the detection of Zn2+, Cd2+ and Hg2+ in aqueous samples, pH, solvent type and ligand concentration were optimized for an analytical method based on HL chemosensor. HL gave a wide range of linearity with Zn2+, Hg2+ and Cd2+, the limit of detection was found to be 2.7 × 10-7 M, 7.5 × 10-7 M and 6.0 × 10-7 M, respectively.
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Affiliation(s)
- E K İnal
- Department of Chemistry, Faculty of Science, Ankara University, Ankara, 06100, Turkey.
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11
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Bayraktutan T. Investigation of photophysical and binding properties of Rose Bengal dye on graphene oxide and polyethyleneimine-functionalized graphene oxide nanocomposites. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01130-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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12
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Lavrinenko IA, Holyavka MG, Chernov VE, Artyukhov VG. Second derivative analysis of synthesized spectra for resolution and identification of overlapped absorption bands of amino acid residues in proteins: Bromelain and ficin spectra in the 240-320 nm range. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 227:117722. [PMID: 31707026 DOI: 10.1016/j.saa.2019.117722] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 09/16/2019] [Accepted: 10/27/2019] [Indexed: 06/10/2023]
Abstract
We establish the origin and formation of peaks in UV absorption spectra of proteins by applying the second derivative analysis to (i) spectra of the native protein, (ii) to its model spectra "synthesized" as a sum of partial free amino acid spectra and (iii) to absorption spectra of the free amino acids. We show that the bromelain peaks at 248.2, 253.2, 258.4 and 264.2 nm are due to phenylalanine maxima; the predictable peak at 279.6 nm (which is almost coincident with the extremum of the zero-order spectrum at 279.4 nm) is mainly due to tyrosine maximum, while the peaks at 274.6 and 290.6 nm are due to tryptophan maximum; 268.0 nm peak to the superposition of tyrosine and phenylalanine maxima, and 283.4 nm peak to the superposition of tyrosine and tryptophan maxima. Similar results are obtained for ficin: the peaks at 248.4, 253.0 and 258.8 nm are formed by the phenylalanine maxima, the predictable peak at 264.4 nm accords with the corresponding bromelain 264.2 nm peak; the 279.4 nm peak almost coincides with the zero order spectrum peak (279.6 nm), but it is expressed stronger than that of bromelain due to a different ratio of tyrosine to tryptophan side groups. The peaks at 273.4 and 290.6 nm are associated with tryptophan, the 268.0 nm peak being mainly due to tyrosine (and fractionally to phenylalanine); and the 283.8 nm peak belongs to tyrosine and, to a greater extent, to tryptophan. We demonstrate that the amino acid residues of tryptophan, tyrosine and phenylalanine undergo correspondingly the largest, intermediate and the lowest positive (red) wavelength shift in the zero-order protein absorption spectrum with respect to the model (synthesized) spectrum. The difference appearing in the positions of the bromelain and ficin absorption band peaks is determined by superposition of relative contributions from amino acid residues. This superposition is resulted from (i) linear combination of amino acid residues spectra and (ii) their different (non-uniform) wavelength shifts as functions of microenvironment of these residues' chromophores. The proposed approach to the analysis of the protein absorption spectra with the help of "synthesized" spectra can be transferred to other objects studied in analytical and organic chemistry of high molecular compounds containing monomer units with various chromophores.
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Bozkurt E, Gul HI. Deciphering binding mechanism between bovine serum albumin and new pyrazoline compound K4. LUMINESCENCE 2019; 35:534-541. [DOI: 10.1002/bio.3762] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 11/02/2019] [Accepted: 12/10/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Ebru Bozkurt
- Programme of Occupational Health and Safety, Erzurum Vocational Training SchoolAtaturk University Erzurum Turkey
| | - Halise Inci Gul
- Department of Pharmaceutical Chemistry, Faculty of PharmacyAtaturk University Erzurum Turkey
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14
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Anish Babu A, Karthick K, Subramanian R, Swarnalatha K. Exploring the structural interaction of BSA with amine functionalized ruthenium(II) metal complex. J Biomol Struct Dyn 2019; 38:4032-4039. [PMID: 31630620 DOI: 10.1080/07391102.2019.1683071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Athanas Anish Babu
- Photochemistry Research Laboratory, Department of Chemistry, Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli, Tamil Nadu, India
| | - Kamaraj Karthick
- Photochemistry Research Laboratory, Department of Chemistry, Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli, Tamil Nadu, India
| | - Ramasamy Subramanian
- Department of Chemistry, Manonmaniam Sundaranar University College, Govindaperi, Tirunelveli, Tamil Nadu, India
| | - Kalaiyar Swarnalatha
- Photochemistry Research Laboratory, Department of Chemistry, Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli, Tamil Nadu, India
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15
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BAYRAKTUTAN TUĞBA. Molecular Interaction Between Cationic Polymer Polyethyleneimine and Rose Bengal Dye: A Spectroscopic Study. JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2019. [DOI: 10.18596/jotcsa.504528] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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16
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Ahmed A, Shamsi A, Bano B. Deciphering the toxic effects of iprodione, a fungicide and malathion, an insecticide on thiol protease inhibitor isolated from yellow Indian mustard seeds. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2018; 61:52-60. [PMID: 29852369 DOI: 10.1016/j.etap.2018.05.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 05/21/2018] [Accepted: 05/23/2018] [Indexed: 06/08/2023]
Abstract
Pesticides are being used globally to improve agricultural production. They are applied specifically to combat with pathogens that are a major threat for reduced optimum yield of crops. This study was carried out to see the effect of commercially used pesticides on a specific plant protein viz. phytocystatin isolated from yellow mustard seeds (YMP). Phytocystatin is a thiol proteinase inhibitor, which regulates endogenous and exogenous cysteine proteinases and plays a vital physiological role in plants. Different classes of pesticides like fungicide (iprodione) of dicarboximide class and an insecticide (malathion) of class organophosphate are retorted for our study. In the presence of these pesticides, biophysical and biochemical changes were observed in phytocystatin. These changes were evaluated making use of caseinolytic activity assay, UV-vis spectroscopy, fluorescence spectroscopy, FTIR, and circular dichroism. Isothermal titration calorimetry was employed to see interaction pattern of these pesticides with phytocystatin. The results obtained clearly depict that the pesticides bind with the phytocystatin thereby changing its native conformation and reducing its intrinsic property of inhibition on cysteine proteinase as evident by reduced anti-papain inhibition in the presence of pesticides. Furthermore, CD and FTIR spectroscopy results clearly show a decrease in α-helical content upon interaction with malathion and iprodione. Among the two pesticides, iprodione has far more pronounced effect on YMP evident from striking changes in UV, Fluorescence, CD and FTIR spectroscopy. 2,4-dinitrophenylhydrazine spectrophotometric assay was also carried out to check production of ROS, generation of ROS was observed in the presence of these pesticides thus implying that ROS might be responsible for changes in native structure of phytocystatin induced by pesticides.
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Affiliation(s)
- Azaj Ahmed
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, India
| | - Anas Shamsi
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, India
| | - Bilqees Bano
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, India.
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17
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Wang S, Wu C, Liu Z, You H. Studies on the interaction of BDE-47 and BDE-209 with acetylcholinesterase (AChE) based on the neurotoxicity through fluorescence, UV–vis spectra, and molecular docking. Toxicol Lett 2018; 287:42-48. [DOI: 10.1016/j.toxlet.2018.01.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 01/11/2018] [Accepted: 01/24/2018] [Indexed: 12/09/2022]
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Kaur A, Khan IA, Banipal PK, Banipal TS. Deciphering the complexation process of a fluoroquinolone antibiotic, levofloxacin, with bovine serum albumin in the presence of additives. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 191:259-270. [PMID: 29045929 DOI: 10.1016/j.saa.2017.10.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Revised: 10/04/2017] [Accepted: 10/08/2017] [Indexed: 06/07/2023]
Abstract
The current work aims to explore the thermodynamic and conformational aspects for the binding of fluoroquinolone antibacterial drug, levofloxacin (LFC), with bovine serum albumin (BSA) using calorimetric, spectroscopic (UV-visible, fluorescence, circular dichroism, and 1H NMR), dynamic light scattering (DLS) and computational methods (molecular docking). The binding of LFC with BSA at two sequential sites with higher affinity (~103M-1) at the first site has been explored by calorimetry whereas the binding at a single site with affinity of the order of ~104M-1 has been observed from fluorescence spectroscopy. The calorimetric study in the presence of additives along with docking analysis reveals the significant role of electrostatic, hydrogen bonding, and hydrophobic interactions in the association process. The slight conformational changes in protein as well as the changes in the water network structure around the binding cavity of protein have been observed from spectroscopic and DLS measurements. The LFC induced quenching of BSA fluorescence was observed to be initiated mainly through the static quenching process and this suggests the formation of ground state LFC-BSA association complex. The stronger interactions of LFC in the cavity of Sudlow site I (subdomain IIA) of protein have been explored from site marker calorimetric and molecular docking study.
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Affiliation(s)
- Amandeep Kaur
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Imran Ahmd Khan
- School of Pharmaceutical Science and Technology,Tianjin University, Tianjin 300072, PR China
| | | | - Tarlok Singh Banipal
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India.
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Jia J, Wang Y, Liu Y, Xiang Y. Exploration of interaction of canthaxanthin with human serum albumin by spectroscopic and molecular simulation methods. LUMINESCENCE 2017; 33:425-432. [PMID: 29251407 DOI: 10.1002/bio.3430] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 10/18/2017] [Accepted: 10/18/2017] [Indexed: 02/06/2023]
Abstract
The interaction between the food colorant canthaxanthin (CA) and human serum albumin (HSA) in aqueous solution was explored by using fluorescence spectroscopy, three-dimensional fluorescence spectra, synchronous fluorescence spectra, UV-vis absorbance spectroscopy, circular dichroism (CD) spectra and molecular docking methods. The thermodynamic parameters calculated from fluorescence spectra data showed that CA could result in the HSA fluorescence quenching. From the KSV change with the temperature dependence, it was concluded that HSA fluorescence quenching triggered by CA is the static quenching and the number of binding sites is one. Furthermore, the secondary structure of HSA was changed with the addition of CA based on the results of synchronous fluorescence, three-dimensional fluorescence and CD spectra. Hydrogen bonds and van der Waals forces played key roles in the binding process of CA with HSA, which can be obtained from negative standard enthalpy (ΔH) and negative standard entropy (ΔS). Furthermore, the conclusions were certified by molecular docking studies and the binding mode was further analyzed with Discovery Studio. These conclusions can highlight the potential of the interaction mechanism of food additives and HSA.
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Affiliation(s)
- Jie Jia
- Department of Chemistry, Capital Normal University, Beijing, China
| | - Yuxian Wang
- Department of Chemistry, Capital Normal University, Beijing, China
| | - Yueying Liu
- Department of Chemistry, Capital Normal University, Beijing, China
| | - Yuhong Xiang
- Department of Chemistry, Capital Normal University, Beijing, China
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Paul S, Sepay N, Sarkar S, Roy P, Dasgupta S, Saha Sardar P, Majhi A. Interaction of serum albumins with fluorescent ligand 4-azido coumarin: spectroscopic analysis and molecular docking studies. NEW J CHEM 2017. [DOI: 10.1039/c7nj02335a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The investigation of the binding of 4-AC to biomolecular systems using photophysical techniques and molecular docking studies.
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Affiliation(s)
- Sandip Paul
- Department of Chemistry
- Presidency University
- Kolkata 700 073
- India
| | - Nasim Sepay
- Department of Chemistry
- Presidency University
- Kolkata 700 073
- India
| | - Shrabana Sarkar
- Department of Chemistry
- Presidency University
- Kolkata 700 073
- India
| | - Pritam Roy
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur
- India
| | - Swagata Dasgupta
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur
- India
| | - Pinki Saha Sardar
- The Department of Chemistry
- The Bhawanipur Education Society College
- Kolkata 700020
- India
| | - Anjoy Majhi
- Department of Chemistry
- Presidency University
- Kolkata 700 073
- India
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