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Khan MS, Al-Twaijry N, Alotaibi FN, Alenad AM, Alokail MS, Arshad M, Al Kheraif AA, Elrobh M, Shaik GM. Unveiling the Detrimental Effect of Glipizide on Structure and Function of Catalase: Spectroscopic, Thermodynamics and Simulation Studies. J Fluoresc 2024:10.1007/s10895-024-03792-9. [PMID: 38913089 DOI: 10.1007/s10895-024-03792-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Accepted: 06/06/2024] [Indexed: 06/25/2024]
Abstract
Free radicals, products of oxidative processes, induce cellular damage linked to diseases like Parkinson's and diabetes due to increased reactive oxygen species (ROS) levels. Catalase, crucial for scavenging ROS, emerges as a therapeutic agent against ailments including atherosclerosis and tumor progression. Its primary function involves breaking down hydrogen peroxide into water and oxygen. Research on catalase-drug interactions reveals structural changes under specific conditions, affecting its activity and cellular antioxidant balance, highlighting its pivotal role in defending against oxidative stress-related diseases. Hence, targeting catalase is considered an effective strategy for controlling ROS-induced cellular damage. This study investigates the interaction between bovine liver catalase and glipizide using spectroscopic and computational methods. It also explores glipizide's effect on catalase activity. More than 20% inhibition of catalase enzymatic activity was recorded in the presence of 50 µM glipizide. To investigate the inhibition of catalase activity by glipizide, we performed a series of binding studies. Glipizide was found to form a complex with catalase with moderate affinity and binding constant in the range of 3.822 to 5.063 × 104 M-1. The binding was spontaneous and entropically favourable. The α-helical content of catalase increased from 24.04 to 29.53% upon glipizide complexation. Glipizide binding does not alter the local environment surrounding the tyrosine residues while a notable decrease in polarity around the tryptophan residues of catalase was recorded. Glipizide interacted with numerous active site residues of catalase including His361, Tyr357, Ala332, Asn147, Arg71, and Thr360. Molecular simulations revealed that the catalase-glipizide complex remained relatively stable in an aqueous environment. The binding of glipizide had a negligible effect on the secondary structure of catalase, and hydrogen bonds persisted consistently throughout the trajectory. These results could aid in the development of glipizide as a potent catalase inhibitor, potentially reducing the impact of reactive oxygen species (ROS) in the human body.
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Affiliation(s)
- Mohd Shahnawaz Khan
- Department of Biochemistry, College of Science, King Saud University, 11451, Riyadh, Saudi Arabia.
| | - Nojood Al-Twaijry
- Department of Biochemistry, College of Science, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Fai N Alotaibi
- Department of Biochemistry, College of Science, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Amal M Alenad
- Department of Biochemistry, College of Science, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Majed S Alokail
- Department of Biochemistry, College of Science, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Mohammed Arshad
- College of Applied Medical Science, King Saud University, Riyadh, Saudi Arabia
| | | | - Mohamed Elrobh
- Department of Biochemistry, College of Science, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Gouse M Shaik
- Department of Biochemistry, College of Science, King Saud University, 11451, Riyadh, Saudi Arabia
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Samal RR, Subudhi U. Biochemical and biophysical interaction of rare earth elements with biomacromolecules: A comprehensive review. CHEMOSPHERE 2024; 357:142090. [PMID: 38648983 DOI: 10.1016/j.chemosphere.2024.142090] [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: 12/12/2023] [Revised: 04/06/2024] [Accepted: 04/18/2024] [Indexed: 04/25/2024]
Abstract
The growing utilization of rare earth elements (REEs) in industrial and technological applications has captured global interest, leading to the development of high-performance technologies in medical diagnosis, agriculture, and other electronic industries. This accelerated utilization has also raised human exposure levels, resulting in both favourable and unfavourable impacts. However, the effects of REEs are dependent on their concentration and molecular species. Therefore, scientific interest has increased in investigating the molecular interactions of REEs with biomolecules. In this current review, particular attention was paid to the molecular mechanism of interactions of Lanthanum (La), Cerium (Ce), and Gadolinium (Gd) with biomolecules, and the biological consequences were broadly interpreted. The review involved gathering and evaluating a vast scientific collection which primarily focused on the impact associated with REEs, ranging from earlier reports to recent discoveries, including studies in human and animal models. Thus, understanding the molecular interactions of each element with biomolecules will be highly beneficial in elucidating the consequences of REEs accumulation in the living organisms.
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Affiliation(s)
- Rashmi R Samal
- Biochemistry & Biophysics Laboratory, Environment & Sustainability Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, 751013, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Umakanta Subudhi
- Biochemistry & Biophysics Laboratory, Environment & Sustainability Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, 751013, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Baral B, Nial PS, Subudhi U. Enhanced enzymatic activity and conformational stability of catalase in presence of tetrahedral DNA nanostructures: A biophysical and kinetic study. Int J Biol Macromol 2023; 242:124677. [PMID: 37141969 DOI: 10.1016/j.ijbiomac.2023.124677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 04/07/2023] [Accepted: 04/27/2023] [Indexed: 05/06/2023]
Abstract
The emergence of DNA nanotechnology has shown enormous potential in a vast array of applications, particularly in the medicinal and theranostics fields. Nevertheless, the knowledge of the compatibility between DNA nanostructures and cellular proteins is largely unknown. Herein, we report the biophysical interaction between proteins (circulatory protein bovine serum albumin, BSA, and the cellular enzyme bovine liver catalase, BLC) and tetrahedral DNA (tDNAs), which are well-known nanocarriers for therapeutics. Interestingly, the secondary conformation of BSA or BLC was unaltered in the presence of tDNAs which supports the biocompatible property of tDNA. In addition, thermodynamic studies showed that the binding of tDNAs with BLC has a stable non-covalent interaction via hydrogen bond and van der Waals contact, which is indicative of a spontaneous reaction. Furthermore, the catalytic activity of BLC was increased in the presence of tDNAs during 24 h of incubation. These findings indicate that the presence of tDNA nanostructures not only ensures a steady secondary conformation of proteins, but also stabilize the intracellular proteins like BLC. Surprisingly, our investigation discovered that tDNAs have no effect on albumin proteins, either by interfering or by adhering to the extracellular proteins. These findings will aid in the design of future DNA nanostructures for biomedical applications by increasing the knowledge on the biocompatible interaction of tDNAs with biomacromolecules.
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Affiliation(s)
- Bineeth Baral
- DNA Nanotechnology & Application Laboratory, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar 751013, Odisha, India; School of Biological Sciences, Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Partha S Nial
- DNA Nanotechnology & Application Laboratory, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar 751013, Odisha, India; School of Biological Sciences, Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Umakanta Subudhi
- DNA Nanotechnology & Application Laboratory, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar 751013, Odisha, India; School of Biological Sciences, Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India.
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Samal RR, Sundaray K, Tulsiyan KD, Saha S, Chainy GBN, Subudhi U. Compromised conformation and kinetics of catalase in the presence of propylthiouracil: A biophysical study and alleviation by curcumin. Int J Biol Macromol 2023; 226:1547-1559. [PMID: 36455824 DOI: 10.1016/j.ijbiomac.2022.11.266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 11/18/2022] [Accepted: 11/25/2022] [Indexed: 11/30/2022]
Abstract
In the present study, the inhibitory effect of propylthiouracil (PTU) on bovine liver catalase (BLC) activity was studied in the presence of curcumin (CUR). The results suggest that the PTU-induced decrease in BLC activity was caused by a change in conformation of BLC with reduced α-helical content and decrease in zeta potential. Nevertheless, temperature-dependent activation of CUR protects the activity of BLC by restoring the secondary conformation and zeta potential of BLC. CUR inhibited the time-induced reduction in BLC activity and the protection was increased with increasing concentrations of CUR and found to be significant even from 1:0.1 molar ratios. The enzyme kinetics confirmed the high catalytic efficiency of BLC in presence of CUR than PTU. The protective role of CUR was due to the formation of a more stabilized complex as demonstrated by molecular docking, and fourier-transform infrared study. Isothermal titration calorimetric study supports for a favourable reaction between BLC and PTU or CUR due to the negative ΔH, and positive TΔS. Although the number of binding sites for PTU and CUR was found to be 10 and 7, respectively, the binding affinity between CUR and BLC is approximately 3.72 fold stronger than BLC-PTU complex. The increased melting temperature of BLC was noticed in presence of CUR suggesting the protective potential of CUR towards biomolecules. Indeed, this is the first biophysical study to describe the molecular mechanism of PTU-induced reduction in BLC activity and alleviation by CUR with detail kinetics. Thus, CUR can be further extended to other antioxidant enzymes or compromised biomolecules for therapeutic interventions.
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Affiliation(s)
- Rashmi R Samal
- Biochemistry & Biophysics Laboratory, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar 751013, Odisha, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Kajal Sundaray
- Biochemistry & Biophysics Laboratory, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar 751013, Odisha, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Kiran D Tulsiyan
- School of Chemical Sciences, National Institute of Science Education & Research, Bhubaneswar 752050, Odisha, India; Homi Bhaba National Institute, Mumbai 400094, India
| | - Sumit Saha
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India; Materials Chemistry Department, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar 751013, Odisha, India
| | - Gagan B N Chainy
- Department of Biotechnology, Utkal University, Bhubaneswar 751004, Odisha, India
| | - Umakanta Subudhi
- Biochemistry & Biophysics Laboratory, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar 751013, Odisha, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India.
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Jena AB, Rath S, Subudhi U, Dandapat J. Molecular interaction of benzo-a-pyrene inhibits the catalytic activity of catalase: Insights from biophysical and computational studies. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133494] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Baral B, Dutta J, Subudhi U. Biophysical interaction between self-assembled branched DNA nanostructures with bovine serum albumin and bovine liver catalase. Int J Biol Macromol 2021; 177:119-128. [PMID: 33609575 DOI: 10.1016/j.ijbiomac.2021.02.095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 01/30/2021] [Accepted: 02/13/2021] [Indexed: 12/15/2022]
Abstract
Branched DNA (bDNA) nanostructures have emerged as self-assembled biomaterials and are being considered for biomedical applications. Herein, we report the biophysical interaction between self-assembled bDNA nanostructure with circulating protein bovine serum albumin (BSA) and cellular enzyme bovine liver catalase (BLC). The binding between bDNA and BSA or BLC was confirmed through the decrease in fluorescence spectra. The Stern-Volmer data supports for non-covalent bonding with ~1 binding site in case of BSA and BLC thus advocating a static binding. Furthermore, FTIR and ITC study confirmed the binding of bDNAs with proteins through hydrogen bonding and van der Waals interaction. The negative free energy observed in ITC represent spontaneous reaction for BLC-bDNA interaction. The biophysical interaction between bDNA nanostructures and proteins was also supported by DLS and zeta potential measurement. With an increase in bDNA concentrations up to 100 nM, no significant change in absorbance and CD spectra was observed for both BLC and BSA which suggests structural stability and unaffected secondary conformation of proteins in presence of bDNA. Furthermore, the catalytic activity of BLC was unaltered in presence of bDNAscr even with increasing the incubation period from 1 h to 24 h. Interestingly, the time-dependent decrease in activity of BLC was protected by bDNAmix. The thermal melting study suggests a higher Tm value for proteins in presence of bDNAmix which demonstrates that interaction with bDNAmix increases the thermal stability of proteins. Collectively these data suggest that self-assembled DNA nanostructure may bind to BSA for facilitating circulation in plasma or binding to intracellular proteins like BLC for stabilization, however the secondary conformation of protein or catalytic activity of enzyme is unaltered in presence of bDNA nanostructure. Thus, the newly established genomic sequence-driven self-assembled DNA nanostructure can be explored for in vitro or in vivo experimental work in recent future.
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Affiliation(s)
- Bineeth Baral
- DNA Nanotechnology & Application Laboratory, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar 751013, Odisha, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Juhi Dutta
- School of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar 752050, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - Umakanta Subudhi
- DNA Nanotechnology & Application Laboratory, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar 751013, Odisha, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India.
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Interaction of artemisinin protects the activity of antioxidant enzyme catalase: A biophysical study. Int J Biol Macromol 2021; 172:418-428. [PMID: 33460658 DOI: 10.1016/j.ijbiomac.2021.01.072] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/22/2020] [Accepted: 01/12/2021] [Indexed: 01/09/2023]
Abstract
The major antioxidant enzyme catalase is downregulated and the enzyme activity is compromised in various disease conditions such as malarial and cancer. Hence, the restoration and protection of catalase is a promising therapeutic strategy in disease management. In the present study, for the first time we have demonstrated the protective role of well-known anti-malarial drug Artemisinin (ART) on the time and temperature-induced degradation of bovine liver catalase (BLC) activity. The findings at different time intervals and at higher temperature showed the protective role of ART on BLC activity. Molecular docking studies suggested specific binding of ART on BLC through heme group interface which was further supported by cyclic voltammetry and dynamic light scattering study. The stabilization of BLC in presence of ART was mediated through forming a BLC-ART complex with reduced and shifted electrochemical peak and increased hydrodynamic diameter. ART substantially prevents the temperature-induced reduction in α-helical content with simultaneous increment in other secondary structures like antiparallel, parallel, β-turn and random coils. Nevertheless, the protective role of ART was accepted from the enhanced thermal stability and increased Tm value of BLC in presence of ART at higher temperatures. Our results uncover the mechanism of interaction between ART with BLC and suggest the protective role of ART towards spatiotemporal alteration of BLC by preventing the structural and molecular change in BLC. Thus, the findings advocate ART as a potential therapeutic drug for diseases associated with reduced catalase activity.
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Gamov GA, Zavalishin MN, Pimenov OA, Klochkov VV, Khodov IA. La(III), Ce(III), Gd(III), and Eu(III) Complexation with Tris(hydroxymethyl)aminomethane in Aqueous Solution. Inorg Chem 2020; 59:17783-17793. [DOI: 10.1021/acs.inorgchem.0c03082] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- George A. Gamov
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology (ISUCT), Sheremetevskii pr. 7, 153000 Ivanovo, Russia
| | - Maksim N. Zavalishin
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology (ISUCT), Sheremetevskii pr. 7, 153000 Ivanovo, Russia
| | - Oleg A. Pimenov
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology (ISUCT), Sheremetevskii pr. 7, 153000 Ivanovo, Russia
| | - Vladimir V. Klochkov
- Kazan Federal University, Kremlyovskaya str. 18, 420008 Kazan, Russian Federation
| | - Ilya A. Khodov
- G. A. Krestov Institute of Solution Chemistry, Russian Academy of Sciences (RAS), Akademicheskaya str. 1, 153045 Ivanovo, Russia Federation
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Jena AB, Samal RR, Kumari K, Pradhan J, Chainy GBN, Subudhi U, Pal S, Dandapat J. The benzene metabolite p-benzoquinone inhibits the catalytic activity of bovine liver catalase: A biophysical study. Int J Biol Macromol 2020; 167:871-880. [PMID: 33181220 DOI: 10.1016/j.ijbiomac.2020.11.044] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/06/2020] [Accepted: 11/06/2020] [Indexed: 01/06/2023]
Abstract
The current communication reports the inhibitory effect of para-benzoquinone (p-BQ) on the structure and function of bovine liver catalase (BLC), a vital antioxidant enzyme. Both BLC and p-BQ were dissolved in respective buffers and the biophysical interaction was studied at physiological concentrations. For the first time our data reveals an enthalpy-driven interaction between BLC and p-BQ which is due to hydrogen bonding and van der Waals interactions. The binding affinity of p-BQ with BLC is nearly 2.5 folds stronger in MOPS buffer than Phosphate buffer. Importantly, the binding affinity between BLC and p-BQ was weak in HEPES buffer as compared to other buffers being the strongest in Tris buffer. Molecular docking studies reveal that binding affinity of p-BQ with BLC differ depending upon the nature of buffers rather than on the participating amino acid residues of BLC. This is further supported by the differential changes in secondary structures of BLC. The p-BQ-induced conformational change in BLC was evident from the reduced BLC activity in presence of different buffers in the following order, Phosphate>MOPS>Tris>HEPES. The absorbance peak of BLC was gradually increased and fluorescence spectra of BLC were drastically decreased when BLC to p-BQ molar ratio was incrementally enhanced from 0 to 10,000 times in presence of all buffers. Nevertheless, the declined activity of BLC was positively correlated with the reduced fluorescence and negatively correlated with the enhanced absorbance. Electrochemical study with cyclic voltammeter also suggests a direct binding of p-BQ with BLC in presence of different buffers. Thus, p-BQ-mediated altered secondary structure in BLC results into compromised activity of BLC.
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Affiliation(s)
- Atala B Jena
- Centre of Excellence in Integrated Omics & Computational Biology, Utkal University, Bhubaneswar 751004, Odisha, India
| | - Rashmi R Samal
- CSIR-Institute of Minerals & Materials Technology, Bhubaneswar 751013, Odisha, India; Academy of Scientific & Innovative Research (AcSIR), New Delhi 110025, India
| | - Kanchan Kumari
- CSIR-Institute of Minerals & Materials Technology, Bhubaneswar 751013, Odisha, India
| | - Jyotsnarani Pradhan
- Post Graduate Department of Biotechnology, Utkal University, Bhubaneswar 751004, Odisha, India
| | - Gagan B N Chainy
- Post Graduate Department of Biotechnology, Utkal University, Bhubaneswar 751004, Odisha, India
| | - Umakanta Subudhi
- CSIR-Institute of Minerals & Materials Technology, Bhubaneswar 751013, Odisha, India; Academy of Scientific & Innovative Research (AcSIR), New Delhi 110025, India.
| | - Satyanarayan Pal
- Post Graduate Department of Chemistry, Utkal University, Bhubaneswar 751004, Odisha, India
| | - Jagnehswar Dandapat
- Centre of Excellence in Integrated Omics & Computational Biology, Utkal University, Bhubaneswar 751004, Odisha, India; Post Graduate Department of Biotechnology, Utkal University, Bhubaneswar 751004, Odisha, India.
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Shahraki S, Delarami HS, Saeidifar M, Nejat R. Catalytic activity and structural changes of catalase in the presence of Levothyroxine and Isoxsuprine hydrochloride. Int J Biol Macromol 2020; 152:126-136. [DOI: 10.1016/j.ijbiomac.2020.02.064] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 02/05/2020] [Accepted: 02/07/2020] [Indexed: 11/24/2022]
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Samal RR, Mishra M, Subudhi U. Differential interaction of cerium chloride with bovine liver catalase: A computational and biophysical study. CHEMOSPHERE 2020; 239:124769. [PMID: 31526997 DOI: 10.1016/j.chemosphere.2019.124769] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 07/25/2019] [Accepted: 09/04/2019] [Indexed: 06/10/2023]
Abstract
In this study, Cerium chloride-induced conformational changes of Bovine Liver Catalase (BLC) has been investigated by molecular docking and further supported by various biophysical techniques. The temporal change of catalytic activity of BLC has also been studied in presence of Ce(III) with different buffer solution in vitro at 25 °C. The differential binding of Ce(III) to BLC observed by simulation study was well supported by the differential regulation of BLC activity in different buffers. After 1 h of incubation with CeCl3, the reduction in activity of BLC was maximum in MOPS, HEPES and Tris buffer, whereas no change in activity was noticed in phosphate buffer. Isothermal Titration Calorimetric (ITC) study also supports the differential binding of Ce(III) to BLC in different buffers. Ce(III)-induced conformational transition in BLC was followed as a function of concentration. Nevertheless, with 24 h incubation of CeCl3 the activity of BLC was highest with higher molar concentration of CeCl3 suggesting the conformational stability of BLC in presence of Ce(III). The compromised activity of BLC in response to Ce(III) is due to the induced conformational change and the degree of change in secondary conformation of BLC was maximum in MOPS, HEPES and Tris and least in phosphate buffer. Therefore, the reduced activity of BLC is controlled by the direct interaction of Ce(III) in the active site of BLC in Tris buffer or indirect interaction of Ce(III) in the non-active site of BLC in MOPS and HEPES buffer.
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Affiliation(s)
- Rashmi R Samal
- CSIR-Institute of Minerals & Materials Technology, Bhubaneswar, 751 013, India; Academy of Scientific & Innovative Research (AcSIR), New Delhi, 110025, India
| | - Madhusmita Mishra
- CSIR-Institute of Minerals & Materials Technology, Bhubaneswar, 751 013, India
| | - Umakanta Subudhi
- CSIR-Institute of Minerals & Materials Technology, Bhubaneswar, 751 013, India; Academy of Scientific & Innovative Research (AcSIR), New Delhi, 110025, India.
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Bhanjadeo MM, Baral B, Subudhi U. Sequence-specific B-to-Z transition in self-assembled DNA: A biophysical and thermodynamic study. Int J Biol Macromol 2019; 137:337-345. [DOI: 10.1016/j.ijbiomac.2019.06.166] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 06/17/2019] [Accepted: 06/23/2019] [Indexed: 12/20/2022]
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Shahraki S, Samareh Delarami H, Saeidifar M. Catalase inhibition by two Schiff base derivatives. Kinetics, thermodynamic and molecular docking studies. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111003] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Bhanjadeo MM, Subudhi U. Praseodymium promotes B–Z transition in self-assembled DNA nanostructures. RSC Adv 2019; 9:4616-4620. [PMID: 35520195 PMCID: PMC9060621 DOI: 10.1039/c8ra10164g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 01/31/2019] [Indexed: 11/21/2022] Open
Abstract
Millimolar concentrations of PrCl3 can induce sequence-specific B–Z transition in various-self-assembled branched DNA (bDNA) nanostructures. Competitive dye binding and thermal kinetics suggest that the phosphate backbone and grooves of bDNA are wrapped with Pr3+ for stabilizing the Z-bDNA. Application of EDTA can convert Z-DNA back to the B-form. Millimolar concentrations of PrCl3 can induce sequence-specific B–Z transition in various-self-assembled branched DNA (bDNA) nanostructures.![]()
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Affiliation(s)
- Madhabi M. Bhanjadeo
- DNA Nanotechnology & Application Laboratory
- CSIR-Institute of Minerals & Materials Technology
- Bhubaneswar 751 013
- India
- Academy of Scientific & Innovative Research (AcSIR)
| | - Umakanta Subudhi
- DNA Nanotechnology & Application Laboratory
- CSIR-Institute of Minerals & Materials Technology
- Bhubaneswar 751 013
- India
- Academy of Scientific & Innovative Research (AcSIR)
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