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Malik A, Alhomida A, Khan JM. SDBS induces multiple catalase conformations in a dose-dependent manner. Int J Biol Macromol 2023; 253:127606. [PMID: 37871717 DOI: 10.1016/j.ijbiomac.2023.127606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 10/18/2023] [Accepted: 10/20/2023] [Indexed: 10/25/2023]
Abstract
Amyloid fibrils have been linked to several incurable diseases. They are long and thin fibrous proteins that self-assemble into fibrils. Small molecules can stimulate amyloid fibrillation, but the mechanism by which this happens is not well understood. This study examined how a negatively charged benzene ring containing surfactant, sodium dodecylbenzene sulphonate (SDBS), affects the fibrillation of bovine liver catalase (BLC). After SDBS treatment, BLC conformational changes were examined in vitro using turbidity, RLS kinetics, intrinsic fluorescence, ThT fluorescence, far-UV CD, and TEM. BLC in the native state was alpha-helical at pH 7.4, while it was converted to a random coil structure at pH 2.0. Far-UV CD and intrinsic fluorescence data showed that at concentrations <0.1 mM of SDBS, randomly coiled BLC assumed a native-like alpha-helical structure. However, between 0.1 and 1.0 mM SDBS, BLC was aggregated. ThT fluorescence and far-UV CD measurements showed the amyloid-like structures in the aggregated BLC. At higher SDBS concentrations (>1.0 mM) at pH 2.0, BLC again attains a native-like alpha-helical structure. It is essential for therapeutic purposes to clearly understand the process underlying surfactant- or lipid-induced fibrillation.
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Affiliation(s)
- Ajamaluddin Malik
- Department of Biochemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, Saudi Arabia.
| | - Abdullah Alhomida
- Department of Biochemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, Saudi Arabia
| | - Javed Masood Khan
- Department of Food Science and Nutrition, Faculty of Food and Agriculture Science, King Saud University, P.O. Box 2460, Riyadh, Saudi Arabia
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Malik A, Al-Amri AM, Alhomida A, Khan JM. Bovine liver catalase turns into three conformational states after exposure to an anionic surfactant. Colloids Surf B Biointerfaces 2023; 229:113481. [PMID: 37536170 DOI: 10.1016/j.colsurfb.2023.113481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 07/24/2023] [Accepted: 07/26/2023] [Indexed: 08/05/2023]
Abstract
The mechanism by which anionic surfactants promote amyloid fibril is not well understood. Here, we investigated how sodium dodecyl sulfate (SDS), a negatively charged surfactant, affects the fibrillation of the partially unfolded random-coiled bovine liver catalase (BLC) at a pH of 2.0. We used several methods, including turbidity, RLS kinetics, intrinsic fluorescence, ThT fluorescence, far-UV CD, and TEM imaging, to evaluate the conformational changes of BLC in vitro in response to SDS treatment. BLC is a multimeric protein and well folded at physiological pH but forms a random coil structure at pH 2.0. Intrinsic fluorescence and far-UV CD data showed that below 0.1 mM SDS, random coiled BLC turned into a native-like structure. BLC incubated with an SDS concentration ranging from 0.1 to 2.0 mM led to the formation of aggregates. The ThT fluorescence intensity was enhanced in the aggregated BLC samples (0.1-2.0 mM SDS), and cross beta-sheeted structure was detected by the far UV CD measurements. BLC adopts a complete alpha-helical structure upon interacting with SDS at a more than 2.0 mM concentration at pH 2.0. Understanding the mechanism of surfactant- or lipid-induced fibrillation is important for therapeutic purposes.
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Affiliation(s)
- Ajamaluddin Malik
- Department of Biochemistry, Collage of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia.
| | - Abdulaziz M Al-Amri
- Department of Biochemistry, Collage of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Abdullah Alhomida
- Department of Biochemistry, Collage of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Javed Masood Khan
- Department of Food and Nutrition, Facility of Food and Agriculture Science, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia
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Samal RR, Navani HS, Saha S, Kisan B, Subudhi U. Evidence of microplastics release from polythene and paper cups exposed to hot and cold: A case study on the compromised kinetics of catalase. J Hazard Mater 2023; 454:131496. [PMID: 37121030 DOI: 10.1016/j.jhazmat.2023.131496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/14/2023] [Accepted: 04/24/2023] [Indexed: 05/19/2023]
Abstract
Microplastics (MPs) have become widespread in the modern world posing a hidden threat to the global environment. However, growing accumulation and devastating impact of MPs on human health and the environment have received least attention. In the current investigation, for the first time MPs have been identified which are released from the daily usable materials like polythene bags (PB) and paper cups (PC) in response to hot and cold water exposure at different time intervals. The impact of these MPs has been assessed on the major antioxidant enzyme, bovine liver catalase (BLC). The binding of MPs caused conformational changes in BLC by decreasing the α-helical content, which results in reduction of the enzymatic activity. Kinetics study revealed nearly ∼1.4-fold compromised catalytic efficiency of catalase in response to MPs. Nevertheless, hepatic catalase activity was also significantly decreased in presence of MPs. Further, materials like glass, porcelain, stainless steel, and high-grade plastics are discovered as greener alternatives to PB and PC.
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Affiliation(s)
- R R Samal
- Biochemistry & Biophysics Laboratory, Environment & Sustainability Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, Odisha, India; School of Biological Sciences, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - H S Navani
- Biochemistry & Biophysics Laboratory, Environment & Sustainability Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, Odisha, India; Department of Microbial Technology, Madurai Kamaraj University, Madurai 625021, Tamil Nadu, India
| | - S Saha
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, Odisha, India
| | - B Kisan
- Department of Physics, Utkal University, Bhubaneswar 751004, Odisha, India
| | - U Subudhi
- Biochemistry & Biophysics Laboratory, Environment & Sustainability Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, Odisha, India; School of Biological Sciences, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India.
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4
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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] [What about the content of this article? (0)] [Affiliation(s)] [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] [What about the content of this article? (0)] [Affiliation(s)] [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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Zhou L, Zhou H, Xiao H, Zhang Z, Xiong Z, Tuo X, Guo H. Elucidation on inhibition and binding mechanism of bovine liver catalase by nifedipine: multi-spectroscopic analysis and computer simulation methods. LUMINESCENCE 2022; 37:1547-1556. [PMID: 35816002 DOI: 10.1002/bio.4330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 06/18/2022] [Accepted: 07/07/2022] [Indexed: 11/10/2022]
Abstract
Nifedipine (NDP), a dihydropyridine calcium antagonist, is widely used for the treatment of hypertension and angina pectoris. Catalase is a key antioxidant enzyme that is closely relevant to the level of reactive oxygen species (ROS) in vivo. Here, the research explored the effects of NDP on the conformation and catalytic function of bovine liver catalase (BLC) through enzymatic reaction kinetic techniques, multi-spectroscopic analysis and computer simulation method. Kinetic studies clarified that the NDP debased the activity of BLC by non-competitive inhibition mechanism. Based on the data of trials, it was a static quenching mechanism that functioned in the quenching of intrinsic fluorescence of BLC. The binding constant value was (4.486 ± 0.008) × 104 M-1 (298 K) and BLC had one binding site for NDP. Tyr was prone to be exposed more to a hydrophilic environment in wake of a shift in fluorescence value. The binding reaction of BLC to NDP caused the conformational alteration of BLC, which in turn led to increase of the α-helix and decline of β-sheet contents. Furthermore, several amino acids residues interacted with NDP by means of van der Waals forces, whereas Gln397, Asn368, Gln371, Asn384 and Pro377 formed several Hydrogen Bonds with NDP.
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Affiliation(s)
- Like Zhou
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, China
| | - Hui Zhou
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, China
| | - Huilong Xiao
- School of Pharmacy, Nanchang University, Nanchang, Jiangxi, China
| | - Zihang Zhang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, China
| | - Ziyun Xiong
- School of Pharmacy, Nanchang University, Nanchang, Jiangxi, China
| | - Xun Tuo
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, China
| | - Hui Guo
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, China
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Khataee S, Dehghan G, Yekta R, Rashtbari S, Maleki S, Khataee A. The protective effect of natural phenolic compound on the functional and structural responses of inhibited catalase by a common azo food dye. Food Chem Toxicol 2021; 160:112801. [PMID: 34974130 DOI: 10.1016/j.fct.2021.112801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 12/24/2021] [Accepted: 12/28/2021] [Indexed: 01/15/2023]
Abstract
In this research retrieval effects of natural yellow (NY) on the performance of carmoisine (CAR) inhibited bovine liver catalase (BLC) was studied using multispectral and theoretical methods. Kinetic studies showed that CAR inhibited BLC through competitive inhibition (IC50 value of 2.24 × 10-6 M) while the addition of NY recover the activity of CAR-BLC up to 82% in comparison with the control enzyme. Circular dichroism data revealed that NY can repair the structural changes of BLC, affected by CAR. Furthermore, an equilibrium dialysis study indicated that NY could reduce the stability of the CAR-catalase complex. The surface plasmon resonance (SPR) data analysis indicated a high affinity of NY to BLC compared to CAR and the binding of NY led to a decrease in the affinity of the enzyme to the inhibitor. On the other hand, fluorescence and molecular docking studies showed that the quenching mechanism of BLC by CAR occurs through a static quenching process, and van der Waals forces and hydrogen bonding play a crucial role in the binding of CAR to BLC. MLSD data demonstrated that NY could increase the binding energy of CAR-BLC complex from -7.72 kJ mol-1 to -5.9 kJ mol-1, leading to complex instability and catalase activity salvage.
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Samal RR, Kumari K, Sahoo Y, Mishra SK, Subudhi U. Interaction of artemisinin protects the activity of antioxidant enzyme catalase: A biophysical study. Int J Biol Macromol 2021; 172:418-28. [PMID: 33460658 DOI: 10.1016/j.ijbiomac.2021.01.072] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [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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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Khataee S, Dehghan G, Rashtbari S, Dastmalchi S, Iranshahi M. Noncompetitive Inhibition of Bovine Liver Catalase by Lawsone: Kinetics, Binding Mechanism and in silico Modeling Approaches. Iran J Pharm Res 2020; 19:383-397. [PMID: 32922495 PMCID: PMC7462507 DOI: 10.22037/ijpr.2019.111600.13255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Lawsone (2-hydroxy-1,4-naphtoquinone; LAW), as a naphthoquinone derivative, is the biologically active component of Henna leaves. In this study, the structural and functional effects of LAW on bovine liver catalase (BLC), has been studied utilizing ultraviolet-visible (UV-vis) absorption, fluorescence, and ATR-FTIR spectroscopic techniques, and molecular docking approach. In-vitro kinetic study showed that by adding gradual concentrations of LAW, catalase activity was significantly decreased through noncompetitive inhibition mechanism. UV-vis and ATR-FTIR spectroscopic results illustrated that additional concentration of LAW lead to significant change in secondary structure of the enzyme.The fluorescence spectroscopic results at different temperatures indicated that LAW quenches the intrinsic fluorescence of BLC by dynamic mechanismand there is just one binding site for LAW on BCL. Changing the micro-environment nearby two aromatic residues (tryptophan (Trp) and tyrosine (Tyr)) were resulted from synchronous fluorescence. The thermodynamic parameters were implied that the hydrophobic bindings have a significant impress in the organization of the LAW-catalase complex. Molecular docking data in agreement with experimental results, confirmed that hydrophobic interactions are dominant. Inhibition of enzyme activity by LAW, showed that along withits helpful effects as ananti-oxidant compounds, the side effects of LAW should not be overlooked.
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Affiliation(s)
- Simin Khataee
- Department of Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Gholamreza Dehghan
- Department of Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Samaneh Rashtbari
- Department of Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Siavash Dastmalchi
- Biotechnology Research Center, School of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.,Faculty of Pharmacy, Near East University, POBOX: 99138, Nicosia, North Cyprus, Mersin 10, Turkey
| | - Mehrdad Iranshahi
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Rashtbari S, Dehghan G, Yekta R, Jouyban A, Iranshahi M. Effects of Resveratrol on the Structure and Catalytic Function of Bovine Liver catalase (BLC): Spectroscopic and Theoretical Studies. Adv Pharm Bull 2017; 7:349-357. [PMID: 29071216 PMCID: PMC5651055 DOI: 10.15171/apb.2017.042] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Revised: 06/25/2017] [Accepted: 07/05/2017] [Indexed: 12/14/2022] Open
Abstract
Purpose: The study on the interaction between various compounds and macromolecules such as enzymes has been very important for monitoring the alteration of structural and functional properties of them. Resveratrol (3, 5, 4-trihydroxy-stilbene; RES) is a biologically active phytoallexin found in grapes and other food products. This article shows an interaction of native bovine liver catalase (BLC) with natural antioxidant product, trans resveratrol (tRES) using multispectroscopic methods. Methods: The interaction between BLC and tRES is performed using UV-vis absorption, fluorescence and circular dichroism (CD) spectroscopy and molecular docking study. Results: In vitro kinetic studies indicated that tRES can decrease BLC activity through uncompetitive inhibition. The results of spectroscopic methods represented that the binding of tRES with BLC can change the micro-region around aromatic amino acids (tryptophan (Trp) and tyrosine (Tyr)) and quench intrinsic fluorescence of BLC by a static mechanism. According to fluorescence quenching data analysis, it was revealed that tRES has one binding site on BLC. The thermodynamic parameters were obtained, which demonstrated that tRES can bind to BLC by van der Waals forces and hydrogen bonds. Molecular docking results indicated that tRES binds to BLC away from heme group and near to the Tyr 324 and Phe 265. These results are in agreement with the experimental results. Conclusion: The inhibitory effect of tRES on BLC demonstrated that excessive consumption of the antioxidants could be resulted in hazardous effects.
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Affiliation(s)
- Samaneh Rashtbari
- Department of Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Gholamreza Dehghan
- Department of Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Reza Yekta
- Department of Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Abolghasem Jouyban
- Pharmaceutical Analysis Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehrdad Iranshahi
- Department of Pharmacognosy, Faculty of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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Rashtbari S, Dehghan G, Yekta R, Jouyban A. Investigation of the binding mechanism and inhibition of bovine liver catalase by quercetin: Multi-spectroscopic and computational study. ACTA ACUST UNITED AC 2017; 7:147-153. [PMID: 29159142 PMCID: PMC5684506 DOI: 10.15171/bi.2017.18] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 07/01/2017] [Accepted: 07/08/2017] [Indexed: 11/09/2022]
Abstract
Introduction: The study on the side effects of various drugs and compounds on enzymes is a main issue for monitoring the conformational and functional changes of them. Quercetin (3,5,7,3',4'-pentahydroxyflavone, QUE), a polyphenolic flavonoid, widely found in fruits, vegetables and it is used as an ingredient in foods and beverages. The interaction of bovine liver catalase (BLC) with QUE has been studied in this research by using different spectroscopic methods. Methods: In this work, the interaction of QUE with BLC was investigated using different spectroscopic methods including ultraviolet-visible (UV-vis) absorption, circular dichroism (CD) and fluorescence spectroscopy and molecular docking studies. Results: Fluorescence data at different temperatures, synchronous fluorescence and CD studies revealed conformational changes in the BLC structure in the presence of different concentration of QUE. Also, the fluorescence quenching data showed that QUE can form a non-fluorescent complex with BLC and quench its intrinsic emission by a static process. The binding constant (Ka) for the interaction was 104, and the number of binding site was obtained ~1. The ∆H, ∆S and ∆G changes were obtained, indicating that hydrophobic interactions play a main role in the complex formation. In vitro kinetic studies revealed that QUE can inhibit BLC activity through non-competitive manner. Molecular docking study results were in good agreement with experimental data, confirming only one binding site on BLC for QUE at a cavity among the wrapping domain, threating arm and β-barrel. Conclusion: Inhibition of BLC activity upon interaction with QUE demonstrated that in addition to their beneficial effects, they should not be overlooked for their side effects.
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Affiliation(s)
- Samaneh Rashtbari
- Department of Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Gholamreza Dehghan
- Department of Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Reza Yekta
- Department of Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Abolghasem Jouyban
- Pharmaceutical Analysis Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
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Abstract
Phospholipid vesicle (liposome) offers an aqueous compartment surrounded by lipid bilayer membranes. Various enzyme molecules have been reported to be encapsulated in liposomes. The liposomal enzyme shows peculiar catalytic activity and selectivity to the substrate in the bulk liquid, which are predominantly derived from the substrate permeation resistance through the membrane. We reported that the quaternary structure of bovine liver catalase and alcohol dehydrogenase was stabilized in liposomes through their interaction with lipid membranes. The method and condition for preparing the enzyme-containing liposomes with well-defined size, lipid composition, and enzyme content are of particular importance, because these properties dominate the catalytic performance and stability of the liposomal enzymes.
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