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Jin A, Pérez G, Martínez de Ilarduya A, del Valle LJ, Puiggalí J. Characterization and Biomedical Applications of Electrospun PHBV Scaffolds Derived from Organic Residues. Int J Mol Sci 2024; 26:180. [PMID: 39796038 PMCID: PMC11719612 DOI: 10.3390/ijms26010180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2024] [Revised: 12/17/2024] [Accepted: 12/26/2024] [Indexed: 01/30/2025] Open
Abstract
This study explores the characterization and application of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) synthesized from organic residues, specifically milk and molasses. Six PHBV samples with varying 3-hydroxyvalerate (3HV) content (7%, 15%, and 32%) were analyzed to assess how 3HV composition influences their properties. Comprehensive characterization techniques, including NMR, FTIR, XRD, DSC, TGA, and tensile-stress test, were used to evaluate the molecular structure, thermal properties, crystalline structure, and mechanical behavior. Selected PHBV samples were fabricated into nanofibrous scaffolds via electrospinning, with uniform fibers successfully produced after parameter optimization. The electrospun scaffolds were further analyzed using DSC, GPC, and SEM. Biological evaluations, including cytotoxicity, in vitro drug release, and antibacterial activity tests, were also conducted. The results indicate that the electrospun PHBV scaffolds are biocompatible and exhibit promising properties for biomedical applications such as tissue engineering and drug delivery. This study demonstrates the potential of using organic residues to produce high-value biopolymers with tailored properties for specific applications.
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Affiliation(s)
- Anyi Jin
- Department of Chemical Engineering, Barcelona East School of Engineering (EEBE), Polytechnic University of Catalonia, Av. Eduard Maristany, 10–14, Ed. I2, 08019 Barcelona, Spain;
- VEnvirotech Biotechnology S.L., Pol. Ind. La Torre del Rector, 08130 Santa Perpetua de la Mogoda, Spain;
| | - Germán Pérez
- VEnvirotech Biotechnology S.L., Pol. Ind. La Torre del Rector, 08130 Santa Perpetua de la Mogoda, Spain;
| | - Antxon Martínez de Ilarduya
- Department of Chemical Engineering, Barcelona School of Industrial Engineering (ETSEIB), Polytechnic University of Catalonia, Diagonal, 647, 08028 Barcelona, Spain;
| | - Luis J. del Valle
- Department of Chemical Engineering, Barcelona East School of Engineering (EEBE), Polytechnic University of Catalonia, Av. Eduard Maristany, 10–14, Ed. I2, 08019 Barcelona, Spain;
- Barcelona Research Center in Multiscale Science and Engineering, Polytechnic University of Catalonia, Av. Eduard Maristany 10–14, 08019 Barcelona, Spain
| | - Jordi Puiggalí
- Department of Chemical Engineering, Barcelona East School of Engineering (EEBE), Polytechnic University of Catalonia, Av. Eduard Maristany, 10–14, Ed. I2, 08019 Barcelona, Spain;
- Barcelona Research Center in Multiscale Science and Engineering, Polytechnic University of Catalonia, Av. Eduard Maristany 10–14, 08019 Barcelona, Spain
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2
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Liu Q, Wang S, Wang W, Chen J, Zhu L. Polybrominated diphenyl ethers and polychlorinated biphenyls induced rice "diabetes" by disturbing the transport and decomposition of soluble sugars. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 358:124523. [PMID: 38986763 DOI: 10.1016/j.envpol.2024.124523] [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: 02/23/2024] [Revised: 06/15/2024] [Accepted: 07/08/2024] [Indexed: 07/12/2024]
Abstract
Halogenated flame retardants in farmlands were observed to inhibit the growth of exposed crops. This study aimed to elucidate the mechanism of inhibition on rice by employing four representative polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs). The exposure to these contaminants at 200 nM led to a decrease of 0.63-0.95 fold in rice below-ground biomass and 0.49-0.66 fold in yield, and a corresponding 4%-10% increase in soluble sugars in leaves. PBDEs and PCBs were found to significantly disrupt the synthesis, decomposition, and transport of sugars in leaves, the three pivotal determinants of crop growth. Notably, these compounds promoted a 1.41- to 7.60-fold upregulation of the triose phosphate translocator, significantly enhancing soluble sugar synthesis. Conversely, a 0.45-0.97 fold downregulation was observed for sucrose transporters, thus impeding the leaf-to-shoot efflux of soluble sugars. Furthermore, PBDEs and PCBs were favorably bound to fructose-1,6-bisphosphate aldolase (FBA), inducing its substrate-specific dysfunction in fructose-1,6-diphosphate decomposition (3%-14%). Overall, PBDE and PCB exposure promoted a notable intracellular accumulation of soluble sugars in rice leaves, a typical symptom of plant diabetes, since the intensified synthesis of soluble sugars in leaves and the repressed decomposition and transportation of soluble sugars to other storage organs, thus impeding crop growth. This study provided an insightful understanding of the toxic effects and molecular mechanisms of halogenated flame retardants, highlighting their role in abnormal sugar accumulation and growth inhibition in crops and offering vital information for the risk assessment and administration of these compounds to guarantee the safety of agricultural products.
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Affiliation(s)
- Qian Liu
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang, 310058, China
| | - Shuyuan Wang
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang, 310058, China
| | - Wei Wang
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang, 310058, China; Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Jie Chen
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang, 310058, China; Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Lizhong Zhu
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang, 310058, China; Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, Zhejiang University, Hangzhou, Zhejiang, 310058, China.
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3
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Satapathi D, Das M, Das UK, Laha S, Kundu P, Choudhuri I, Bhattacharya N, Samanta BC, Chattopadhyay N, Maity T. Experimental and molecular modelling demonstration of effective DNA and protein binding as well as anticancer potential of two mononuclear Cu(II) and Co(II) complexes with isothiocyanate and azide as anionic residues. Int J Biol Macromol 2024; 275:133716. [PMID: 38977049 DOI: 10.1016/j.ijbiomac.2024.133716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 07/03/2024] [Accepted: 07/05/2024] [Indexed: 07/10/2024]
Abstract
In the present study, one mononuclear Cu(II) [CuL(SCN)] (1) and one mononuclear Co(II) [CoLN3] (2) complexes, with a Schiff base ligand (HL) formed by condensation of 2-picolylamine and salicylaldehyde, have been successfully developed and structurally characterized. The square planer geometry of both complexes is fulfilled by the coordination of one deprotonated ligand and one ancillary ligand SCN-(1) or N3-(2) to the metal centre. Binding affinities of both complexes with deoxyribonucleic acid (DNA) and human serum albumin (HSA) are investigated using several biophysical and spectroscopic techniques. High values of the macromolecule-complex binding constants and other results confirm the effectiveness of both complexes towards binding with DNA and HSA. The determined values of the thermodynamic parameters support spontaneous interactions of both complexes with HSA, while fluorescence displacement and DNA melting studies establish groove-binding interactions with DNA for both complexes 1 and 2. The molecular modelling study validates the experimental findings. Both complexes are subjected to an MTT test establishing the anticancer property of complex 1 with lower risk to normal cells, confirmed by the IC50 values of the complex for HeLa cancer cells and HEK normal cells. Finally, a nuclear staining analysis reveals that the complexes have caused apoptotic cell death.
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Affiliation(s)
- Dibyendu Satapathi
- Department of Chemistry, Prabhat Kumar College, Purba Medinipur, Contai, West Bengal 721404, India
| | - Manik Das
- Department of Chemistry, Prabhat Kumar College, Purba Medinipur, Contai, West Bengal 721404, India
| | - Uttam Kumar Das
- Department of Chemistry, School of Physical Science, Mahatma Gandhi Central University, Bihar, India
| | - Soumik Laha
- Indian Institute of Chemical Biology, Jadavpur, Kolkata, West Bengal, India
| | - Pronab Kundu
- Department of Chemistry, Presidency University, Yelahanka, Bengaluru 560064, India
| | - Indranil Choudhuri
- Department of Biotechnology, Panskura Banamali College, Panskura, West Bengal, India
| | - Nandan Bhattacharya
- Department of Biotechnology, Panskura Banamali College, Panskura, West Bengal, India
| | | | | | - Tithi Maity
- Department of Chemistry, Prabhat Kumar College, Purba Medinipur, Contai, West Bengal 721404, India.
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4
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Wang X, Sun J, Nie Z, Ma L, Sai H, Cheng J, Liu Y, Duan J. Effect of Chloramphenicol as Antibiotic on the Structure and Function of Pepsin and Its Mechanism of Action. Chem Biodivers 2024; 21:e202301554. [PMID: 38128109 DOI: 10.1002/cbdv.202301554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 12/03/2023] [Indexed: 12/23/2023]
Abstract
The interaction between chloramphenicol (CHL) and pepsin (PEP), as well as the impact of CHL on PEP conformation, were investigated using spectroscopic techniques and molecular docking simulations in this study. The experimental results demonstrate that CHL exhibits a static quenching effect on PEP. The thermodynamic parameters indicate that the reaction between CHL and PEP is spontaneous, primarily driven by hydrogen bonding and van der Waals forces. Moreover, the binding distance of r<7 nm suggests the occurrence of Förster's non-radiative energy transfer between these two molecules. In the synchronous fluorescence spectrum, the maximum fluorescence intensity of PEP produced a redshift phenomenon, indicating that CHL was bound to tryptophan residues of PEP. The addition of CHL induces changes in the secondary structure of PEP, as confirmed by the observed alterations in peak values in three-dimensional fluorescence spectra. The UV spectra reveal a redshift of 3 nm in the maximum absorption peak, indicating a conformational change in the secondary structure of PEP upon addition of CHL. Circular dichroism analysis demonstrates significant alterations in the α-helix, β-sheet, β-turn, and random coil contents of PEP before and after CHL incorporation, further confirming its ability to modulate the secondary structure of PEP.
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Affiliation(s)
- Xiaoxia Wang
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou, 014010, China
- Innermongolia Engineering Research Center of Comprehensive Utilization of Bio-coal Chemical Industry, Baotou, 014010, China
| | - Jisheng Sun
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - Zhihua Nie
- School of life sciences, Tsinghua University, Beijing, 100084, China
| | - Litong Ma
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou, 014010, China
- Innermongolia Engineering Research Center of Comprehensive Utilization of Bio-coal Chemical Industry, Baotou, 014010, China
| | - Huazheng Sai
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - Jianguo Cheng
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - Yunying Liu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - Jianguo Duan
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou, 014010, China
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5
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Mudi A, Ray S, Bera M, Dolai M, Das M, Kundu P, Laha S, Choudhuri I, Chandra Samanta B, Bhattacharyya N, Maity T. A multi-spectroscopic and molecular docking approach for DNA/protein binding study and cell viability assay of first-time reported pendent azide bearing Cu(II)-quercetin and dicyanamide bearing Zn(II)-quercetin complexes. Heliyon 2023; 9:e22712. [PMID: 38125469 PMCID: PMC10731082 DOI: 10.1016/j.heliyon.2023.e22712] [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: 09/27/2023] [Revised: 11/16/2023] [Accepted: 11/16/2023] [Indexed: 12/23/2023] Open
Abstract
In the current study, one new quercetin-based Zn(II) complex [Zn(Qr)(CNNCN)(H2O)2] (Complex 1) which is developed by condensation of quercetin with ZnCl2 in the presence of NaN(CN)2 and Cu(II) complex [Cu(Qr)N3(CH3OH)(H2O)] (complex 2) which is developed by the condensation reaction of quercetin and CuCl2 in presence of NaN3, are thoroughly examined in relation to their use in biomedicine. The results of several spectroscopic studied confirm the structure of both the complexes and the Density Functional Theory (DFT) study helps to optimize the structure of complex 1 and 2. After completion of the identification process, DNA and Human Serum Albumin (HSA) binding efficacy of both the investigated complexes are performed by implementing a long range of biophysical studies and a thorough analysis of the results unveils that complex 1 has better interaction efficacy with the macromolecules than complex 2. The binding efficacy of complex 1 is comparatively higher towards both macromolecules because of its pure groove binding mode during interaction with DNA and the presence of an extra H-bond during connection with HSA. The experimental host-guest binding results is fully validated by molecular docking study. Interestingly complex 1 shows better antioxidant properties than complex 2, as well as quercetin, and it has strong anticancer property with minimal damage to normal cells, which is proved by the MTT assay study. Better DNA and HSA binding efficacy of 1 may be the reason for the better anticancer property of complex 1.
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Affiliation(s)
- Anupam Mudi
- Department of Botany, Behala College, Behala, India
| | - Shubham Ray
- Department of Chemistry, Prabhat Kumar College, Contai, Contai, Purba Medinipur, 721404, India
| | - Manjushree Bera
- Department of Nutrition, Prabhat Kumar College, Contai, Contai, Purba Medinipur, 721404, India
| | - Malay Dolai
- Department of Chemistry, Prabhat Kumar College, Contai, Contai, Purba Medinipur, 721404, India
| | - Manik Das
- Department of Chemistry, Prabhat Kumar College, Contai, Contai, Purba Medinipur, 721404, India
| | - Pronab Kundu
- Department of Chemistry, Presidency University, Yelahanka, Bengaluru, 560064, India
| | | | | | | | | | - Tithi Maity
- Department of Chemistry, Prabhat Kumar College, Contai, Contai, Purba Medinipur, 721404, India
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6
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Nagar N, Saxena H, Pathak A, Mishra A, Poluri KM. A review on structural mechanisms of protein-persistent organic pollutant (POP) interactions. CHEMOSPHERE 2023; 332:138877. [PMID: 37164191 DOI: 10.1016/j.chemosphere.2023.138877] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 04/20/2023] [Accepted: 05/06/2023] [Indexed: 05/12/2023]
Abstract
With the advent of the industrial revolution, the accumulation of persistent organic pollutants (POPs) in the environment has become ubiquitous. POPs are halogen-containing organic molecules that accumulate, and remain in the environment for a long time, thus causing toxic effects in living organisms. POPs exhibit a high affinity towards biological macromolecules such as nucleic acids, proteins and lipids, causing genotoxicity and impairment of homeostasis in living organisms. Proteins are essential members of the biological assembly, as they stipulate all necessary processes for the survival of an organism. Owing to their stereochemical features, POPs and their metabolites form energetically favourable complexes with proteins, as supported by biological and dose-dependent toxicological studies. Although individual studies have reported the biological aspects of protein-POP interactions, no comprehensive study summarizing the structural mechanisms, thermodynamics and kinetics of protein-POP complexes is available. The current review identifies and classifies protein-POP interaction according to the structural and functional basis of proteins into five major protein targets, including digestive and other enzymes, serum proteins, transcription factors, transporters, and G-protein coupled receptors. Further, analysis detailing the molecular interactions and structural mechanism evidenced that H-bonds, van der Waals, and hydrophobic interactions essentially mediate the formation of protein-POP complexes. Moreover, interaction of POPs alters the protein conformation through kinetic and thermodynamic processes like competitive inhibition and allostery to modulate the cellular signalling processes, resulting in various pathological conditions such as cancers and inflammations. In summary, the review provides a comprehensive insight into the critical structural/molecular aspects of protein-POP interactions.
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Affiliation(s)
- Nupur Nagar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Harshi Saxena
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Aakanksha Pathak
- Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Amit Mishra
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Jodhpur, 342011, Rajasthan, India
| | - Krishna Mohan Poluri
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India; Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India.
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7
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Xiao Q, Luo H, Cao H, Li B, Liu J, Liu Y, Huang S. Investigation on conformational variation and enzymatic activity of trypsin affected by Ti 3C 2 QDs via spectroscopic technique and molecular modeling. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 285:121878. [PMID: 36183537 DOI: 10.1016/j.saa.2022.121878] [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: 07/04/2022] [Revised: 09/01/2022] [Accepted: 09/10/2022] [Indexed: 06/16/2023]
Abstract
In this paper, Ti3C2 quantum dots (Ti3C2 QDs) were synthesized by simply treating Ti3C2 MXene powder with acid and base via hydrothermal method. Ti3C2 QDs exhibited superior fluorescence property and were used for the fluorescent imaging of living HeLa cells successfully. In order to evaluate the influence of Ti3C2 QDs on protease with specific biological functions, binding interaction of Ti3C2 QDs with trypsin was studied comprehensively and deeply through spectroscopic strategies and molecular modeling technique. The intrinsic fluorescence of trypsin was spontaneously quenched by Ti3C2 QDs through static quenching mode under van der Waals interaction force, and Ti3C2 QDs bound with the inactive residue domain of trypsin firmly with stoichiometric ratio of 1:1. Ti3C2 QDs induced the microenvironmental variation of the amino acid residues in trypsin, reducing the thermal stability of trypsin significantly. Gel electrophoresis experiments and microscopic imaging experiments demonstrated that Ti3C2 QDs inhibited the enzymatic activity of trypsin on the digestion of human serum albumin and HeLa cells obviously. These results revealed not only the deep interaction mechanism between Ti3C2 QDs and protease but also the influence of Ti3C2 QDs on the enzymatic activity of trypsin, paving the way for the safe biological application of Ti3C2 QDs in the diagnosis and the therapy of protease-related diseases.
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Affiliation(s)
- Qi Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China.
| | - Huajian Luo
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China
| | - Huishan Cao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China
| | - Bo Li
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China
| | - Jiajia Liu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China
| | - Yi Liu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China; State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300378, PR China
| | - Shan Huang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China.
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8
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Bera M, Das M, Dolai M, Laha S, Islam MM, Samanta BC, Das A, Choudhuri I, Bhattacharyya N, Maity T. DNA/Protein Binding and Apoptotic-Induced Anticancer Property of a First Time Reported Quercetin-Iron(III) Complex Having a Secondary Anionic Residue: A Combined Experimental and Theoretical Approach. ACS OMEGA 2023; 8:636-647. [PMID: 36643564 PMCID: PMC9835804 DOI: 10.1021/acsomega.2c05790] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
A new quercetin-based iron(III) cationic complex [Fe(Qr)Cl(H2O)(MeO)] (complex 1) is created in the current study by condensation of quercetin with ferric chloride in the presence of Et3N. Comprehensive spectroscopic analysis and conductometric measurement are used to pinpoint complex 1. The generated complex's +3-oxidation state has been verified by electron paramagnetic resonance (EPR) research. Density functional theory analysis was used to structurally optimize the structure of complex 1. Before biomedical use, a variety of biophysical studies are implemented to evaluate the binding capacity of complex 1 with DNA and human serum albumin (HSA) protein. The findings of the electronic titration between complex 1 and DNA, as well as the stunning fall in the fluorescence intensities of the HSA and EtBr-DNA/DAPI-DNA domain after complex 1 is gradually added, give us confidence that complex 1 has a strong affinity for both macromolecules. It is interesting to note that the displacement experiment confirms partial intercalation as well as the groove binding mechanism of the title complex with DNA. The time-dependent fluorescence analysis indicates that after interaction with complex 1, HSA will exhibit static quenching. The thermodynamic parameter values in the HSA-complex 1 interaction provide evidence for the hydrophobicity-induced pathway leading to spontaneous protein-complex 1 interaction. The two macromolecules' configurations are verified to be preserved when they are associated with complex 1, and this is done via circular dichroism spectral titration. The molecular docking investigation, which is a theoretical experiment, provides complete support for the experimental findings. The potential of the investigated complex to be an anticancer drug has been examined by employing the MTT assay technique, which is carried out on HeLa cancer cell lines and HEK-293 normal cell lines. The MTT assay results validate the ability of complex 1 to display significant anticancer properties. Finally, by using the AO/PI staining approach, the apoptotic-induced cell-killing mechanism as well as the detection of cell morphological changes has been confirmed.
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Affiliation(s)
- Manjushree Bera
- Department
of Nutrition, Prabhat Kumar College, Contai, Purba Medinipur, Contai721404, India
| | - Manik Das
- Department
of Chemistry, Prabhat Kumar College, Contai, Purba Medinipur, Contai721404, India
| | - Malay Dolai
- Department
of Chemistry, Prabhat Kumar College, Contai, Purba Medinipur, Contai721404, India
| | - Soumik Laha
- IICB,
Kolkata, Kolkata, 700032West Bengal, India
| | - Md Maidul Islam
- Department
of Chemistry, Aliah University, Kolkata700064, India
| | - Bidhan Chandra Samanta
- Department
of Chemistry, Mugberia Gangadhar Mahavidyalaya, Purba Medinipur, Contai721425, India
| | - Arindam Das
- Department
of Chemistry, Jadavpur University, Kolkata700032, India
| | | | | | - Tithi Maity
- Department
of Chemistry, Prabhat Kumar College, Contai, Purba Medinipur, Contai721404, India
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9
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Sadat Mostafavi E, Asoodeh A, Chamani J. Evaluation of interaction between Ponceau 4R (P4R) and trypsin using kinetic, spectroscopic, and molecular dynamics simulation methods. J Mol Liq 2022; 362:119761. [DOI: 10.1016/j.molliq.2022.119761] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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10
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Das M, Mukherjee S, Islam MM, Choudhuri I, Bhattacharyya N, Samanta BC, Dutta B, Maity T. Response of Ancillary Azide Ligand in Designing a 1D Copper(II) Polymeric Complex along with the Introduction of High DNA- and HAS-Binding Efficacy, Leading to Impressive Anticancer Activity: A Compact Experimental and Theoretical Approach. ACS OMEGA 2022; 7:23276-23288. [PMID: 35847281 PMCID: PMC9281303 DOI: 10.1021/acsomega.2c01403] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A new versatile azide-bridged polymeric Cu(II) complex, namely, [Cu(L)(μ1,3-N3)]∞ (1), was synthesized utilizing an N,N,O-donor piperidine-based Schiff base ligand (E)-4-bromo-2-((2-(-1-yl)imino)methyl)phenol (HL), obtained via the condensation reaction of 1-(2-aminoethyl) piperidine and 5-bromo salicylaldehyde. The single-crystal X-ray diffraction analysis reveals that complex 1 consists of an end-to-end azido-bridged polymeric network, which is further rationalized with the help of a density functional theory (DFT) study. After routine characterization with a range of physicochemical studies, complex 1 is exploited to evaluate its biomedical potential. Initially, theoretical inspection with the help of a molecular docking study indicated the ability of complex 1 to effectively bind with macromolecules such as DNA and the human serum albumin (HSA) protein. The theoretical aspect was further verified by adopting several spectroscopic techniques. The electronic absorption spectroscopic analysis indicates a remarkable binding efficiency of Complex 1 with both DNA and HSA. The notable fluorescence intensity reduction of the ethidium bromide (EtBr)-DNA adduct, 4',6-diamidino-2-phenylindole (DAPI)-DNA adduct, and HSA after the gradual addition of complex 1 authenticates its promising binding potential with the macromolecules. The retention of the canonical B form of DNA and α form of HSA during the association of complex 1 was confirmed by implementing a circular dichroism spectral study. The association ability of complex 1 with macromolecules further inspired us to inspect its impact on different cell lines such as HeLa (cervical cancer cell), PA1 (ovarian cancer cell), and HEK (normal cell). The dose-dependent and time-dependent in vitro 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay suggests an effective antiproliferative property of complex 1 with low toxicity toward the normal cell line. Finally, the anticancer activity of complex 1 toward carcinoma cell lines was analyzed by nuclear and cellular staining techniques, unveiling the cell death mechanism.
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Affiliation(s)
- Manik Das
- Department
of Chemistry, Prabhat Kumar College, Contai, Purba Medinipur, Contai 721404, India
| | - Somali Mukherjee
- School
of Chemical Sciences, Indian Association
for the Cultivation of Science, Jadavpur, Kolkata 700032, West Bengal, India
| | - Md. Maidul Islam
- Department
of Chemistry, Aliah University, Kolkata 700064, India
| | - Indranil Choudhuri
- Department
of Chemistry, Panskura Banamali College, Panskura 721152, India
| | | | - Bidhan Chandra Samanta
- Department
of Chemistry, Mugberia Gangadhar Mahavidyalaya, Purba Medinipur 721425, India
| | - Basudeb Dutta
- Department
of Chemical Science, IISER Kolkata, Mohanpur, Kolkata 741246, India
| | - Tithi Maity
- Department
of Chemistry, Prabhat Kumar College, Contai, Purba Medinipur, Contai 721404, India
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Pramanik U, Khamari L, Rai S, Mahato P, Nandy A, Yadav R, Agrawal S, Mukherjee S. Macrocyclic Cavitand β-Cyclodextrin Inhibits the Alcohol-induced Trypsin Aggregation. Chemphyschem 2022; 23:e202200155. [PMID: 35608331 DOI: 10.1002/cphc.202200155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/24/2022] [Indexed: 11/09/2022]
Abstract
Trypsin, the most abundant pancreatic protein, aids in protein digestion by hydrolysis and exhibits aggregation propensity in presence of alcohol which can further lead to pancreatitis and eventually pancreatic cancer. Herein, by several experimental and theoretical approaches, we unearth the inhibition of alcohol-induced aggregation of Trypsin by macrocyclic cavitand, β-cyclodextrin (β-CD). β-CD interacts with the native protein and shows inhibitory effect in a dose dependent manner. Moreover, the secondary structures and morphologies of Trypsin in presence of β-CD also clearly emphasize the inhibition of fibril formation. From Fluorescence Correlation Spectroscopy, we observed an enhancement in diffusion time of Nile Red with ~ 2.5 times increase in hydrodynamic radius, substantiating the presence of fibrillar structure. Trypsin also shows reduction in its functional activity due to alcohol-induced aggregation. Our simulation data reports the probable residues responsible for fibril formation which was validated by molecular docking studies.
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Affiliation(s)
- Ushasi Pramanik
- IISER Bopal: Indian Institute of Science Education and Research Bhopal, Chemistry, INDIA
| | - Laxmikanta Khamari
- IISER Bhopal: Indian Institute of Science Education and Research Bhopal, Chemistry, INDIA
| | - Saurabh Rai
- IISER Bhopal: Indian Institute of Science Education and Research Bhopal, Chemistry, INDIA
| | - Paritosh Mahato
- IISER Bopal: Indian Institute of Science Education and Research Bhopal, Chemistry, INDIA
| | - Atanu Nandy
- IISER Bhopal: Indian Institute of Science Education and Research Bhopal, Chemistry, INDIA
| | - Rahul Yadav
- IISER Bhopal: Indian Institute of Science Education and Research Bhopal, Chemistry, INDIA
| | - Sameeksha Agrawal
- IISER Bopal: Indian Institute of Science Education and Research Bhopal, Chemistry, INDIA
| | - Saptarshi Mukherjee
- Indian Institute of Science Education and Research Bhopal, Chemistry, Indore By-Pass Road, Bhauri, 462066, Bhopal, INDIA
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12
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Effects of interaction between hesperetin/hesperidin and glutenin on the structure and functional properties of glutenin. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112983] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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13
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Jana K, Pramanik U, Ingle KS, Maity R, Mukherjee S, Nayak SK, Chandra Debnath S, Maity T, Maity S, Chandra Samanta B. Copper(II) complexes with NNN and NNO Schiff base ligands as efficient photodegradation agents for methylene blue, preferential BSA binder and biomaterial transplants. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Maity R, Sepay N, Pramanik U, Jana K, Mukherjee S, Maity S, Mal D, Maity T, Samanta BC. Exploring the Noncovalent Interactions of the Dinuclear Cu(II) Schiff Base Complex with Bovine Serum Albumin and Cell Viability against the SiHa Cancer Cell Line. J Phys Chem B 2021; 125:11364-11373. [PMID: 34613719 DOI: 10.1021/acs.jpcb.1c05794] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In the present study, a dinuclear bis(μ-acetate) dicopper(II) complex [Cu2L2(μ1.1-CH3COO-)2] has been synthesized from a tridentate NNO Schiff Base ligand L (L = 2,4-dibromo-6-((3-(methylamino)propylimino)methyl)phenol) and characterized by elemental, ultraviolet-visible (UV-vis), Fourier transform infrared (FTIR), 1H NMR, and electrospray ionization-mass spectrometry (ESI-MS) spectroscopic studies. The single-crystal X-ray structure, different noncovalent interactions, Hirshfeld surface analysis, and density functional theory (DFT) studies of the dinuclear complex were determined by crystallographic computational studies. The structural study exposed that the complex consists of the penta-coordinated double μ1.1-acetato-bridged dinuclear units of Cu(II), and it is a centrosymmetric dimer in which the center of inversion lies at the midpoint of two Cu(II) ions. Hirshfeld surface and DFT studies pointed out the probable potentiality of the crystal in prospective binding with the protein. This was experimentally verified by carrying out the binding interaction studies against bovine serum albumin (BSA) protein using various spectroscopic methods. It was observed that the copper(II) complex could strongly bind to BSA and could quench the intrinsic fluorescence of BSA. Further, the studied complex was appraised for cell viability studies against SiHa cancer cells. It is observed that cell viability increases with time, demonstrating the biocompatible nature of the complex.
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Affiliation(s)
- Ribhu Maity
- Department of Chemistry, Mugberia Gangadhar Mahavidyalaya, Bhupatinagar, Purba Medinipur 721425, West Bengal, India
| | - Nayim Sepay
- Department of Chemistry, Lady Brabourne College, Kolkata700017, West Bengal, India
| | - Ushasi Pramanik
- Department of Chemistry, IISER Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh, India
| | - Kalyanmoy Jana
- Department of Chemistry, University of Kalyani, Kalyani 741235, West Bengal, India
| | - Saptarshi Mukherjee
- Department of Chemistry, IISER Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh, India
| | - Swapan Maity
- School of Materials Science and Technology (SMST), Indian Institute of Technology (IIT), BHU, Varanasi 221005, India
| | - Dasarath Mal
- Department of Chemistry, Vijaygarh Jyotish Ray College, Jadavpur, Kolkata 700032, West Bengal, India
| | - Tithi Maity
- Department of Chemistry, Prabhat Kumar College, Purba Medinipur, Contai 721401, West Bengal, India
| | - Bidhan Chandra Samanta
- Department of Chemistry, Mugberia Gangadhar Mahavidyalaya, Bhupatinagar, Purba Medinipur 721425, West Bengal, India
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Pramanik U, Kongasseri AA, Shekhar S, Mathew A, Yadav R, Mukherjee S. Structural Compactness in Hen Egg White Lysozyme Induced by Bisphenol S: A Spectroscopic and Molecular Dynamics Simulation Approach. Chemphyschem 2021; 22:1745-1753. [PMID: 34227204 DOI: 10.1002/cphc.202100272] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 06/15/2021] [Indexed: 12/24/2022]
Abstract
The endocrine disrupting compound Bisphenol and its analogues are widely used in food packaging products and can cause serious health hazards. The protein, Lysozyme (Lyz), showing anti-microbial properties, is used as a "natural" food and dairy preservative. Herein, we explored the interaction between Lyz and Bisphenol S (BPS) by multi-spectroscopic and theoretical approaches. Lyz interacts with BPS through static quenching, where hydrophobic force governed the underlying interaction. Molecular docking results reveal that tryptophan plays a vital role in binding, corroborated well with near UV-CD studies. A decrease in the radius of gyration (from 1.43 nm to 1.35 nm) of Lyz substantiates the compactness of the protein conformation owing to such an interaction. This structural alteration experienced by Lyz may alter its functional properties as a food preservative. Consequently, this can degrade the quality of the food products and thereby lead to severe health issues.
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Affiliation(s)
- Ushasi Pramanik
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal, 462 066, Madhya Pradesh, India
| | - Anju Ajayan Kongasseri
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal, 462 066, Madhya Pradesh, India
| | - Shashi Shekhar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal, 462 066, Madhya Pradesh, India
| | - Ashwin Mathew
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal, 462 066, Madhya Pradesh, India
| | - Rahul Yadav
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal, 462 066, Madhya Pradesh, India
| | - Saptarshi Mukherjee
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal, 462 066, Madhya Pradesh, India
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Yadav J, Kumar Y, Singaraju GS, Patil S. Interaction of chloramphenicol with titin I27 probed using single-molecule force spectroscopy. J Biol Phys 2021; 47:191-204. [PMID: 34075502 DOI: 10.1007/s10867-021-09573-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 05/05/2021] [Indexed: 11/28/2022] Open
Abstract
Titin is a giant elastic protein which is responsible for passive muscle stiffness when muscle sarcomeres are stretched. Chloramphenicol, besides being a broad-spectrum antibiotic, also acts as a muscle relaxant. Therefore, it is important to study the interaction between titin I27 and chloramphenicol. We investigated the interaction of chloramphenicol with octamer of titin I27 using single-molecule force spectroscopy and fluorescence spectroscopy. The fluorescence data indicated that binding of chloramphenicol with I27 results in fluorescence quenching. Furthermore, it is observed that chloramphenicol binds to I27 at a particular concentration ([Formula: see text] 40 μM). Single-molecule force spectroscopy shows that, in the presence of 40 μM chloramphenicol concentration, the I27 monomers become mechanically stable, resulting in an increment of the unfolding force. The stability was further confirmed by chemical denaturation experiments on monomers of I27, which corroborate the evidence for enhanced mechanical stability at 40 μM drug concentration. The free energy of stabilization for I27 (wild type) was found to be 1.95 ± 0.93 kcal/mole and I27 with 40 μM drug was 3.25 ± 0.63 kcal/mole. The results show a direct effect of the broad-spectrum antibiotic chloramphenicol on the passive elasticity of muscle protein titin. The I27 is stabilized both mechanically and chemically by chloramphenicol.
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Affiliation(s)
- Jyoti Yadav
- Indian Institute of Science Education and Research, Pune, India
| | - Yashwant Kumar
- Indian Institute of Science Education and Research, Pune, India
| | | | - Shivprasad Patil
- Indian Institute of Science Education and Research, Pune, India.
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Khamari L, Pramanik U, Shekhar S, Mohanakumar S, Mukherjee S. Thermal Reversibility and Structural Stability in Lysozyme Induced by Epirubicin Hydrochloride. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:3456-3466. [PMID: 33703900 DOI: 10.1021/acs.langmuir.1c00179] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Herein we report the binding interactions between lysozyme (Lyz) and an anthracycline drug, epirubicin hydrochloride (EPR), through an extensive spectroscopic approach at both ensemble average and single molecular resolution. Our steady-state and time-resolved fluorescence spectroscopy reveals that the drug-induced fluorescence quenching of the protein proceeds through a static quenching mechanism. Isothermal titration calorimetry (ITC) and steady-state experiments reveal almost similar thermodynamic signatures of the drug-protein interactions. The underlying force that plays pivotal roles in the said interaction is hydrophobic in nature, which is enhanced in the presence of a strong electrolyte (NaCl). Circular dichroism (CD) spectra indicate that there is a marginal increase in the secondary structure of the native protein (α-helical content increases from 26.9 to 31.4% in the presence of 100 μM EPR) upon binding with the drug. Fluorescence correlation spectroscopy (FCS) was used to monitor the changes in structure and conformational dynamics of Lyz upon interaction with EPR. The individual association (Kass = 0.33 × 106 ms-1 M-1) and dissociation (Kdiss = 1.79 ms-1) rate constants and the binding constant (Kb = 1.84 × 105 M-1) values, obtained from fluctuations of fluorescence intensity of the EPR-bound protein, have also been estimated. AutoDock results demonstrate that the drug molecule is encapsulated within the hydrophobic pocket of the protein (in close proximity to both Trp62 and Trp108) and resides ∼20 Å apart from the covalently labelled CPM dye. Förster resonance energy transfer (FRET) studies proved that the distance between the donor (CPM) and the acceptor (EPR) is ∼22 Å, which is very similar to that obtained from molecular docking analysis (∼20 Å). The system also shows temperature-dependent reversible FRET, which may be used as a thermal sensor for the temperature-sensitive biological systems.
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Affiliation(s)
- Laxmikanta Khamari
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 426 066, Madhya Pradesh, India
| | - Ushasi Pramanik
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 426 066, Madhya Pradesh, India
| | - Shashi Shekhar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 426 066, Madhya Pradesh, India
| | - Shilpa Mohanakumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 426 066, Madhya Pradesh, India
| | - Saptarshi Mukherjee
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 426 066, Madhya Pradesh, India
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Pramanik U, Chakraborty S, Bhattacharyya K, Mukherjee S. An intrinsically disordered protein in F127 hydrogel: Fluorescence correlation spectroscopy and structural diversity of beta casein. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2020.138105] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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