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Wen-Tao C, Zhang YY, Qiang Q, Zou P, Xu Y, Sun C, Badar IH. Characterizations and molecular docking mechanism of the interactions between peptide FDGDF (Phe-Asp-Gly-Asp-Phe) and SOD enzyme. Heliyon 2024; 10:e24515. [PMID: 38293362 PMCID: PMC10826827 DOI: 10.1016/j.heliyon.2024.e24515] [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: 12/30/2022] [Revised: 01/05/2024] [Accepted: 01/10/2024] [Indexed: 02/01/2024] Open
Abstract
In this study, we investigated the antioxidant properties of dry-cured beef crude peptide (BPH) at different storage periods. The combination characteristics of different concentrations of Phe-Asp-Gly-Asp-Phe (FDGDF) and superoxide dismutase (SOD) at different temperatures were analyzed by ultraviolet-visible spectroscopy, fluorescence spectroscopy, and FT-IR spectroscopy, combined with the detection of a SOD activity detection box. It was found that FDGDF could improve the activity of SOD by changing its secondary structure. Bonds were formed at O32/O40/O52 using quantum chemical simulation calculations, and the Fukui index was higher than that of most atoms, indicating that these atoms were more likely to participate in the reaction. SPR biological force analysis showed that FDGDF and SOD were in a fast binding and dissociation mode. This study revealed the theoretical basis for studying the antioxidant mechanism of dry-cured beef and provided ideas for developing new dry-cured beef products.
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Affiliation(s)
- C.H.E.N. Wen-Tao
- School of Biological and Food Engineering, Changzhou University, Changzhou, Jiangsu, 213164, China
| | - Ying-Yang Zhang
- School of Biological and Food Engineering, Changzhou University, Changzhou, Jiangsu, 213164, China
| | - Qiang Qiang
- Changzhou Wujin No. 3 People's Hospital Changzhou, Jiangsu,150030, China
| | - Ping Zou
- School of Biological and Food Engineering, Changzhou University, Changzhou, Jiangsu, 213164, China
| | - Ying Xu
- School of Biological and Food Engineering, Changzhou University, Changzhou, Jiangsu, 213164, China
| | - Chengjun Sun
- School of Biological and Food Engineering, Changzhou University, Changzhou, Jiangsu, 213164, China
| | - Iftikhar Hussain Badar
- Department of Meat Science and Technology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
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2
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Gholizadeh M, Shareghi B, Farhadian S. Elucidating binding mechanisms of naringenin by alpha-chymotrypsin: Insights into non-binding interactions and complex formation. Int J Biol Macromol 2023; 253:126605. [PMID: 37660852 DOI: 10.1016/j.ijbiomac.2023.126605] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 08/15/2023] [Accepted: 08/28/2023] [Indexed: 09/05/2023]
Abstract
As an inevitable parameter in the description of enzyme properties, the investigation of enzyme-ligand interactions has attracted a lot of attention. Alpha-Chymotrypsin (α-Chy) is essential for protein digestion and plays an important role in human health. Naringenin (NAG) as a potent antioxidant has recently been applied in the pharmaceutical industry. Using multispectral methods and computational simulation techniques, the binding strength of NAG to α-Chy was investigated in this research. UV-vis and fluorescence quenching data showed significant spectral changes upon binding of NAG to α-Chy. As demonstrated by fluorescence techniques, NAG could employ a static quenching process to decrease the intrinsic fluorescence of α-Chy. Both circular dichroism (CD) and FTIR spectroscopic analyses revealed that binding of NAG to α-Chy caused more flexible conformation. The slight increases in RMSD (0.06 nm) were observed for the NAG-(α-Chy) compound was supported by the results of thermal stability data. Docking computation confirmed that hydrogen and Van der Waals interactions are the important forces, which is in exact agreement with thermodynamics studies. Kinetic analysis of the enzyme showed an increase in activity, which was consistent, with the MD simulation results. The findings from the in-silico studies were in complete agreement with the experimental results.
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Affiliation(s)
- Mohammad Gholizadeh
- Department of Biology, Faculty of Science, Shahrekord University, Shahrekord, P. O. Box 115, Iran; Central Laboratory, Shahrekord University, Shahrekord, Iran
| | - Behzad Shareghi
- Department of Biology, Faculty of Science, Shahrekord University, Shahrekord, P. O. Box 115, Iran; Central Laboratory, Shahrekord University, Shahrekord, Iran.
| | - Sadegh Farhadian
- Department of Biology, Faculty of Science, Shahrekord University, Shahrekord, P. O. Box 115, Iran; Central Laboratory, Shahrekord University, Shahrekord, Iran.
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3
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Mostafavi ES, Asoodeh A, Chamani J. New insights on the binding of butyl-paraben to trypsin: experimental and computational approaches. J Biomol Struct Dyn 2023; 41:10302-10314. [PMID: 36510660 DOI: 10.1080/07391102.2022.2154268] [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: 08/23/2022] [Accepted: 11/26/2022] [Indexed: 12/15/2022]
Abstract
Butyl-paraben (BP) is one of the most widely used preservatives in numerous foodstuffs, skin care products, and a variety of drugs, and trypsin is the main digestive enzyme, the research on the binding between the two is essential for human health. In the present paper, the effect of BP on trypsin has been explored using experimental and computational techniques to evaluate BP toxicity at the protein level. The obtained results from molecular docking and kinetic assay revealed BP was embedded in the hydrophobic cavity-S1 binding pocket of the enzyme to inhibit its activity by a competitive model. Intrinsic fluorescence of trypsin after interaction with BP revealed the static mode of quenching. FRET indicated that the distance of the enzyme to BP is 1.89 nm with high energy efficiency. Thermodynamic results proved that BP spontaneously bound to trypsin in an enthalpy-driven manner, the van der Waals interactions and H-bonds serving as the predominant forces in binding processes. CD spectroscopy and molecular dynamics (MD) simulation revealed that the trypsin structure transformed from the β-Sheet structure to the unordered Coil structure upon interacting with BP. Resonance light scattering (RLS), synchronous fluorescence, and three-dimensional (3 D) spectroscopies further supported the alteration in the conformation of trypsin. Differential scanning calorimetry (DSC) showed that trypsin was somewhat destabilized in the presence of BP. Accordingly, all of the experimental data were confirmed by MD simulation.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Elham Sadat Mostafavi
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Ahmad Asoodeh
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
- Cellular and Molecular Research Group, Institute of Biotechnology, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Jamshidkhan Chamani
- Department of Biology, Faculty of Science, Mashhad Branch, Islamic Azad University, Mashhad, Iran
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Eslami-Farsani R, Farhadian S, Shareghi B, Momeni L. molecular interaction of ethylene glycol to hurt Myoglobin: Insights from spectroscopic and molecular modeling studies. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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5
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Yadollahi E, Shareghi B, Farhadian S. Binding parameters and molecular dynamics of Trypsin-Acid Yellow 17 complexation as a function of concentration. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 281:121589. [PMID: 35872431 DOI: 10.1016/j.saa.2022.121589] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 06/02/2022] [Accepted: 06/30/2022] [Indexed: 06/15/2023]
Abstract
Acid Yellow 17 is a kind of azo dye used in food, textile, and cosmetics. Several studies explain the toxicity of azo dye for our body, but one could not find further information about the effects of these dyes on human macromolecules. In the current study, the interaction of AY17 with trypsin is investigated using several techniques. The UV analysis displayed that the absorption of trypsin could be decreased in the presence of this color. The fluorescence investigation indicated that a static form of quenching happens, and a 50% decrease in the fluorescence intensity, also showed the Vander Waals and hydrogen bond are the main forces in the interaction of this color and trypsin. Furthermore, we can observe that the Tm point of trypsin decreases from 46.5 to 42. On the other hand, the CD results were indicated that the interaction of this color with trypsin could decrease the percent of turn, coil and α-helix in trypsin structure. The computational study was undertaken to obtain more information about the interaction between trypsin and AY17. The results were in agreement with the experimental investigation and indicated that the interaction between this color and trypsin leads to less compactness in the trypsin structure.
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Affiliation(s)
- Elham Yadollahi
- Department of Biology, Faculty of Science, Shahrekord University, P.O. Box 115, Shahrekord, Iran; Central Laboratory, Shahrekord University, Shahrekord, Iran
| | - Behzad Shareghi
- Department of Biology, Faculty of Science, Shahrekord University, P.O. Box 115, Shahrekord, Iran; Central Laboratory, Shahrekord University, Shahrekord, Iran.
| | - Sadegh Farhadian
- Department of Biology, Faculty of Science, Shahrekord University, P.O. Box 115, Shahrekord, Iran; Central Laboratory, Shahrekord University, Shahrekord, Iran.
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Heshmati Aghda N, Zhang Y, Wang J, Lu A, Pillai AR, Maniruzzaman M. A Novel 3D Printing Particulate Manufacturing Technology for Encapsulation of Protein Therapeutics: Sprayed Multi Adsorbed-Droplet Reposing Technology (SMART). Bioengineering (Basel) 2022; 9:653. [PMID: 36354564 PMCID: PMC9687125 DOI: 10.3390/bioengineering9110653] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/20/2022] [Accepted: 11/02/2022] [Indexed: 10/27/2023] Open
Abstract
Recently, various innovative technologies have been developed for the enhanced delivery of biologics as attractive formulation targets including polymeric micro and nanoparticles. Combined with personalized medicine, this area can offer a great opportunity for the improvement of therapeutics efficiency and the treatment outcome. Herein, a novel manufacturing method has been introduced to produce protein-loaded chitosan particles with controlled size. This method is based on an additive manufacturing technology that allows for the designing and production of personalized particulate based therapeutic formulations with a precise control over the shape, size, and potentially the geometry. Sprayed multi adsorbed-droplet reposing technology (SMART) consists of the high-pressure extrusion of an ink with a well determined composition using a pneumatic 3D bioprinting approach and flash freezing the extrudate at the printing bed, optionally followed by freeze drying. In the present study, we attempted to manufacture trypsin-loaded chitosan particles using SMART. The ink and products were thoroughly characterized by dynamic light scattering, rheometer, Scanning Electron Microscopy (SEM), and Fourier Transform Infra-Red (FTIR) and Circular Dichroism (CD) spectroscopy. These characterizations confirmed the shape morphology as well as the protein integrity over the process. Further, the effect of various factors on the production were investigated. Our results showed that the concentration of the carrier, chitosan, and the lyoprotectant concentration as well as the extrusion pressure have a significant effect on the particle size. According to CD spectra, SMART ensured Trypsin's secondary structure remained intact regardless of the ink composition and pressure. However, our study revealed that the presence of 5% (w/v) lyoprotectant is essential to maintain the trypsin's proteolytic activity. This study demonstrates, for the first time, the viability of SMART as a single-step efficient process to produce biologics-based stable formulations with a precise control over the particulate morphology which can further be expanded across numerous therapeutic modalities including vaccines and cell/gene therapies.
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Affiliation(s)
| | | | | | | | | | - Mohammed Maniruzzaman
- Pharmaceutical Engineering and 3D Printing (PharmE3D) Labs, Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, TX 78705, USA
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7
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Yadollahi E, Shareghi B, Farhadian S. Noncovalent interactions between Quinoline yellow and trypsin: In vitro and in silico methods. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118826] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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8
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Momeni L, Farhadian S, Shareghi B. Study on the interaction of ethylene glycol with trypsin: Binding ability, activity, and stability. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118542] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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9
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Eslami-Farsani R, Farhadian S, Shareghi B, Momeni L. Structural insights into the binding behavior of NiO with myoglobin. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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10
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Investigation on the interaction behavior between safranal and pepsin by spectral and MD simulation studies. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117903] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Hashemi-Shahraki F, Shareghi B, Farhadian S. Characterizing the binding affinity and molecular interplay between quinoline yellow and pepsin. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117317] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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12
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Wang J, Yu X, Zheng X. Influence of zinc doping on the molecular biocompatibility of cadmium-based quantum dots: Insights from the interaction with trypsin. Chem Biol Interact 2021; 351:109716. [PMID: 34688612 DOI: 10.1016/j.cbi.2021.109716] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 09/21/2021] [Accepted: 10/20/2021] [Indexed: 12/20/2022]
Abstract
Doping quantum dots (QDs) with extra element presents a promising future for their applications in the fields of environmental monitoring, commercial products and biomedical sciences. However, it remains unknown for the influence of doping on the molecular biocompatibility of QDs and the underlying mechanisms of the interaction between doped-QDs and protein molecules. Using the "one-pot" method, we synthesized N-acetyl-l-cysteine capped CdTe: Zn2+ QDs with higher fluorescence quantum yield, improved stability and better molecular biocompatibility compared with undoped CdTe QDs. Using digestive enzyme trypsin (TRY) as the protein model, the interactions of undoped QDs and Zn-doped QDs with TRY as well as the underlying mechanisms were investigated using multi-spectroscopy, isothermal titration calorimetry and dialysis techniques. Van der Waals forces and hydrogen bonds are the major driving forces in the interaction of both QDs with TRY, which leading to the loosening of protein skeleton and tertiary structural changes. Compared with undoped QDs, Zn-doped QDs bind less amount of TRY with a higher affinity and then release higher amount of Cd. Zn-doped QDs have a less stimulating impact on TRY activity by decreasing TRY binding and reducing Cd binding to TRY. Taken all together, Zn-doped QDs offer a safer alternative for the applications of QDs by reducing unwanted interactions with proteins and improving biocompatibility at the molecular level.
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Affiliation(s)
- Jing Wang
- School of Environmental and Material Engineering, Yantai University, 30# Qingquan Road, Yantai, 264005, PR China.
| | - Xinping Yu
- School of Environmental and Material Engineering, Yantai University, 30# Qingquan Road, Yantai, 264005, PR China
| | - Xiaolin Zheng
- School of Environmental and Material Engineering, Yantai University, 30# Qingquan Road, Yantai, 264005, PR China
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Yu X, Zheng X, Yang B, Wang J. Investigating the interaction of CdTe quantum dots with plasma protein transferrin and their interacting consequences at the molecular and cellular level. Int J Biol Macromol 2021; 185:434-440. [PMID: 34197848 DOI: 10.1016/j.ijbiomac.2021.06.164] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 06/22/2021] [Accepted: 06/24/2021] [Indexed: 11/25/2022]
Abstract
This study investigated the interacting mechanism of CdTe quantum dots (QDs) with typical plasma protein transferrin (TF) as well as the impact of the formation of QDs-TF complex on the structure of TF and the cytotoxicity of mouse primary kidney cells. Dialysis experiments and cell viability assays revealed that the formation of QDs-TF complex reduced the contents of Cd released from CdTe QDs and thus counteracted the cytotoxicity of CdTe QDs. The assay of isothermal titration calorimetry found that CdTe QDs complexed with TF majorly through hydrophobic interaction. Multi-spectroscopic measurements showed that CdTe QDs caused the loosening of polypeptide chain, the changes of secondary and tertiary structures as well as the attenuated aggregation of TF molecule. Moreover, these structural and conformational changes were attributed to the nano-effects of CdTe QDs rather than the released Cd. This study is of great significance for fully evaluating the biocompatibility of Cd-QDs and comprehensively understanding the mechanism of Cd-QDs toxicity at the molecular and cellular level.
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Affiliation(s)
- Xinping Yu
- School of Environmental and Material Engineering, Yantai University, 30# Qingquan Road, Yantai 264005, PR China
| | - Xiaolin Zheng
- School of Environmental and Material Engineering, Yantai University, 30# Qingquan Road, Yantai 264005, PR China
| | - Bin Yang
- School of Environmental and Material Engineering, Yantai University, 30# Qingquan Road, Yantai 264005, PR China
| | - Jing Wang
- School of Environmental and Material Engineering, Yantai University, 30# Qingquan Road, Yantai 264005, PR China.
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Pabbathi NPP, Velidandi A, Tavarna T, Gupta S, Raj RS, Gandam PK, Baadhe RR. Role of metagenomics in prospecting novel endoglucanases, accentuating functional metagenomics approach in second-generation biofuel production: a review. BIOMASS CONVERSION AND BIOREFINERY 2021; 13:1371-1398. [PMID: 33437563 PMCID: PMC7790359 DOI: 10.1007/s13399-020-01186-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 10/30/2020] [Accepted: 12/01/2020] [Indexed: 05/02/2023]
Abstract
As the fossil fuel reserves are depleting rapidly, there is a need for alternate fuels to meet the day to day mounting energy demands. As fossil fuel started depleting, a quest for alternate forms of fuel was initiated and biofuel is one of its promising outcomes. First-generation biofuels are made from edible sources like vegetable oils, starch, and sugars. Second-generation biofuels (SGB) are derived from lignocellulosic crops and the third-generation involves algae for biofuel production. Technical challenges in the production of SGB are hampering its commercialization. Advanced molecular technologies like metagenomics can help in the discovery of novel lignocellulosic biomass-degrading enzymes for commercialization and industrial production of SGB. This review discusses the metagenomic outcomes to enlighten the importance of unexplored habitats for novel cellulolytic gene mining. It also emphasizes the potential of different metagenomic approaches to explore the uncultivable cellulose-degrading microbiome as well as cellulolytic enzymes associated with them. This review also includes effective pre-treatment technology and consolidated bioprocessing for efficient biofuel production.
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Affiliation(s)
- Ninian Prem Prashanth Pabbathi
- Integrated Biorefinery Research Lab, Department of Biotechnology, National Institute of Technology, Warangal, Telangana 506004 India
| | - Aditya Velidandi
- Integrated Biorefinery Research Lab, Department of Biotechnology, National Institute of Technology, Warangal, Telangana 506004 India
| | - Tanvi Tavarna
- Integrated Biorefinery Research Lab, Department of Biotechnology, National Institute of Technology, Warangal, Telangana 506004 India
| | - Shreyash Gupta
- Integrated Biorefinery Research Lab, Department of Biotechnology, National Institute of Technology, Warangal, Telangana 506004 India
| | - Ram Sarvesh Raj
- Integrated Biorefinery Research Lab, Department of Biotechnology, National Institute of Technology, Warangal, Telangana 506004 India
| | - Pradeep Kumar Gandam
- Integrated Biorefinery Research Lab, Department of Biotechnology, National Institute of Technology, Warangal, Telangana 506004 India
| | - Rama Raju Baadhe
- Integrated Biorefinery Research Lab, Department of Biotechnology, National Institute of Technology, Warangal, Telangana 506004 India
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Eslami-Farsani R, Shareghi B, Farhadian S, Momeni L. Experimental and theoretical investigations on the interaction of glucose molecules with myoglobin in the aqueous solution using theoretical and experimental methods. J Biomol Struct Dyn 2020; 39:6384-6395. [PMID: 32772893 DOI: 10.1080/07391102.2020.1798283] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Osmolytes are generally well-known for the stabilization of proteins. The stabilizing impact of glucose on the dynamics and structure of myoglobin was probed through molecular simulation' docking and spectroscopic procedures. Using thermal stability examinations, the thermodynamic folding properties, point of melting temp. (Tm), thermodynamic enthalpy change (ΔH°) and thermodynamic entropy change (ΔS°) were determined to find out the depiction of myoglobin folding. Glucose operated as an enhancer relative to myoglobin stabilization. The quenching static model was demonstrated by fluorescence spectroscopy. There was one binding site. According to the spectroscopy analysis, glucose was capable of protecting the native structural conformation of protein as well as preventing from protein unfolding. The fluorescence spectroscopy together with simulation through molecular docking method revealed that definitely hydrogen bonding plus van der Waals forces had major contributions to the stabilization of the myoglobin-glucose complex. Hence, the direct interactions contributed slightly to the stabilization impact whereas indirect interactions resulted from the hydration arise from a molecular mechanism primarily inducing the glucose stabilizing impacts. An elevation occurred in the Tm of the myoglobin-glucose complex because of the greater H-bond creation and limited surface hydrophobic activity. Our findings indicate that glucose was capable of protecting the native conformation of myoglobin, clearly describing that glucose stabilization is preferred to be omitted from myoglobin surface. This is because water is more inclined to provide desirable interacting with myoglobin functional groups as compared to glucose. Also, MD results confirmed that the structural changes of myoglobin is the effect of complex formation with glucose.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | - Behzad Shareghi
- Department of Biology, Faculty of Science, Shahrekord University, Shahrekord, Iran
| | - Sadegh Farhadian
- Department of Biology, Faculty of Science, Shahrekord University, Shahrekord, Iran.,Central Laboratory, Shahrekord University, Shahrekord, Iran
| | - Lida Momeni
- Department of Biology, Faculty of Science, University of Payame Noor, Tehran, Iran
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Wang G, Wang W, Shangguan E, Gao S, Liu Y. Effects of gold nanoparticle morphologies on interactions with proteins. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 111:110830. [DOI: 10.1016/j.msec.2020.110830] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 02/01/2020] [Accepted: 03/09/2020] [Indexed: 02/09/2023]
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17
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Jafari A, Shareghi B, Hosseini-Koupaei M, Farhadian S. Characterization of osmolyte-enzyme interactions using different spectroscopy and molecular dynamic techniques: Binding of sucrose to proteinase K. Int J Biol Macromol 2020; 151:1250-1258. [DOI: 10.1016/j.ijbiomac.2019.10.171] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Revised: 10/01/2019] [Accepted: 10/22/2019] [Indexed: 12/20/2022]
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18
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Hebbi V, Kumar D, Rathore AS. Process Analytical Technology Implementation for Peptide Manufacturing: Cleavage Reaction of Recombinant Lethal Toxin Neutralizing Factor Concatemer as a Case Study. Anal Chem 2020; 92:5676-5681. [PMID: 32191451 DOI: 10.1021/acs.analchem.9b05273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The α-chymotrypsin-based cleavage reaction is necessary for manufacturing peptides using rDNA technology with tandem repeats. The current work showcases application of process analytical technology (PAT) tools for monitoring and control of this reaction, using recombinant Lethal Toxin Neutralizing Factor (rLTNF) as a case study. At-line Fourier Transform infrared spectroscopy (ATR-FTIR) combined with attenuated total internal reflectance sampling accessory was exploited to monitor the reaction. PLS spectral calibration models were created for real-time quantification of concentrations of rLTNF concatemer and urea in the reaction mixture. An end-to-end PAT monitoring and control strategy was developed to address potential deviations and ensure that targets for yield, purity, and impurity profile are met for each batch. The impact of various deviations of process parameters outside the operating space, such as deviations in the reaction buffer, concentration of concatemer in the IBs, enzyme loading relative to protein concentration, and reaction time with late quenching were investigated. Variation in impurity profile over time in the case of late reaction quenching was determined through HPLC and mass spectrometry. It has been demonstrated how process signatures from the PAT tools across various batches and campaigns can be analyzed to facilitate real-time process monitoring and control.
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Affiliation(s)
- Vishwanath Hebbi
- Department of Chemical Engineering, Indian Institute of Technology, 110016, Hauz Khas, India
| | - Devendra Kumar
- Department of Chemical Engineering, Indian Institute of Technology, 110016, Hauz Khas, India
| | - Anurag S Rathore
- Department of Chemical Engineering, Indian Institute of Technology, 110016, Hauz Khas, India
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19
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The modifier action of NiO nanoparticles on the activity, structure, and stability of proteinase K. MONATSHEFTE FUR CHEMIE 2020. [DOI: 10.1007/s00706-020-02552-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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20
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Li M, Rauf A, Guo Y, Kang X. Real-Time Label-Free Kinetics Monitoring of Trypsin-Catalyzed Ester Hydrolysis by a Nanopore Sensor. ACS Sens 2019; 4:2854-2857. [PMID: 31684727 DOI: 10.1021/acssensors.9b01783] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Trypsin is an important proteolytic enzyme in the digestive system and its activity is a major indicator for evaluating diseases such as chronic pancreatitis. Here, we present a novel label-free method to detect trypsin kinetics using a nanopore technique. A mutant α-hemolysin (M113R)7 protein nanopore equipped with a polyamine decorated β-cyclodextrin (am7β-CD) was employed as a sensing platform for the real-time monitoring of the process of trypsin enzymatic cleavage of a substrate Nα-benzoyl-l-arginine ethyl ester (BAEE) at the single molecule level. Significantly, this sensor can exclusively respond to the current modulation caused by the product and prevent interference from the substrate, thus improving detection sensitivity, and it provides a new scheme to detect enzyme activity for cleaving small molecules.
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Affiliation(s)
- Mingjuan Li
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry, College of Chemistry & Materials Science, Northwest University, Xi’an 710069, P. R. China
| | - Ayesha Rauf
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry, College of Chemistry & Materials Science, Northwest University, Xi’an 710069, P. R. China
| | - Yanli Guo
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry, College of Chemistry & Materials Science, Northwest University, Xi’an 710069, P. R. China
| | - Xiaofeng Kang
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry, College of Chemistry & Materials Science, Northwest University, Xi’an 710069, P. R. China
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Rajabi M, Farhadian S, Shareghi B, Asgharzadeh S, Momeni L. Noncovalent interactions of bovine trypsin with curcumin and effect on stability, structure, and function. Colloids Surf B Biointerfaces 2019; 183:110287. [DOI: 10.1016/j.colsurfb.2019.06.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 06/05/2019] [Accepted: 06/07/2019] [Indexed: 01/20/2023]
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22
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23
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Momeni L, Shareghi B, Farhadian S, Raisi F. Making bovine trypsin more stable and active by Erythritol: A multispectroscopic analysis, docking and computational simulation methods. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111389] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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24
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Sadeghi-kaji S, Shareghi B, Saboury AA, Farhadian S. Investigation on the structure and function of porcine pancreatic elastase (PPE) under the influence of putrescine: A spectroscopy and molecular simulation study. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111115] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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25
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Kovalska V, Vakarov S, Losytskyy M, Kuperman M, Chornenka N, Toporivska Y, Gumienna-Kontecka E, Voloshin Y, Varzatskii O, Mokhir A. Dicarboxyl-terminated iron(ii) clathrochelates as ICD-reporters for globular proteins. RSC Adv 2019; 9:24218-24230. [PMID: 35527894 PMCID: PMC9069836 DOI: 10.1039/c9ra04102h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 07/26/2019] [Indexed: 01/07/2023] Open
Abstract
Cage metal complexes iron(ii) clathrochelates, which are inherently CD silent, were discovered to demonstrate intensive output in induced circular dichroism (ICD) spectra upon their assembly to albumins. With the aim to design clathrochelates as protein-sensitive CD reporters, the approach for the functionalization of one chelate α-dioximate fragment of the clathrochelate framework with two non-equivalent substituents was developed, and constitutional isomers of clathrochelate with two non-equivalent carboxyphenylsulfide groups were synthesized. The interaction of designed iron(ii) clathrochelates and their symmetric homologues with globular proteins (serum albumins, lysozyme, β-lactoglobulin (BLG), trypsin, insulin) was studied by protein fluorescence quenching and CD techniques. A highly-intensive ICD output of the clathrochelates was observed upon their association with albumins and BLG. It was shown that in the presence of BLG, different clathrochelate isomers gave spectra of inverted signs, indicating the stabilization of opposite configurations (Λ or Δ) of the clathrochelate framework in the assembly with this protein. So, we suggest that the isomerism of the terminal carboxy group determined preferable configurations of the clathrochelate framework for the fixation in the protein binding site. MALDI TOF results show the formation of BLG-clathrochelate complex with ratio 1 : 1. Based on the docking simulations, the binding of the clathrochelate molecule (all isomers) to the main BLG binding site (calyx) in its open conformation is suggested. The above results point that the variation of the ribbed substituents at the clathrochelate framework is an effective tool to achieve the specificity of clathrochelate ICD reporting properties to the target protein.
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Affiliation(s)
- Vladyslava Kovalska
- Institute of Molecular Biology and Genetics, NASU 150 Zabolotnogo St. 03143 Kyiv Ukraine
| | - Serhii Vakarov
- Princeton Biomolecular Research Labs 26A Saperne Pole St. 01042 Kyiv Ukraine
- V.I. Vernadsky Institute of General and Inorganic Chemistry, NASU 32/34 Palladin Av. 03142 Kyiv Ukraine
| | - Mykhaylo Losytskyy
- Institute of Molecular Biology and Genetics, NASU 150 Zabolotnogo St. 03143 Kyiv Ukraine
| | - Marina Kuperman
- Institute of Molecular Biology and Genetics, NASU 150 Zabolotnogo St. 03143 Kyiv Ukraine
| | - Nina Chornenka
- Princeton Biomolecular Research Labs 26A Saperne Pole St. 01042 Kyiv Ukraine
- V.I. Vernadsky Institute of General and Inorganic Chemistry, NASU 32/34 Palladin Av. 03142 Kyiv Ukraine
| | - Yuliya Toporivska
- Faculty of Chemistry, University of Wroclaw 14 F. Joliot-Curie St. 50-383 Wroclaw Poland
| | | | - Yan Voloshin
- Nesmeyanov Institute of Organoelement Compounds RAS 28 Vavilova St. 119991 Moscow Russia
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences 31 Leninsky Prosp. 119991 Moscow Russia
| | - Oleg Varzatskii
- V.I. Vernadsky Institute of General and Inorganic Chemistry, NASU 32/34 Palladin Av. 03142 Kyiv Ukraine
| | - Andriy Mokhir
- Organic Chemistry II, Friedrich-Alexander-University of Erlangen-Nuremberg Henkestr. 42 91054 Erlangen Germany
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Sadeghi-kaji S, Shareghi B, Saboury AA, Farhadian S, Hemmati R. A molecular investigation into the interaction of SiO2 nanoparticles with elastase by multispectroscopic techniques and kinetic studies. Int J Biol Macromol 2019; 134:216-222. [DOI: 10.1016/j.ijbiomac.2019.05.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 04/28/2019] [Accepted: 05/02/2019] [Indexed: 12/18/2022]
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Synthesis of molecularly imprinted fluorescent probe based on biomass-derived carbon quantum dots for detection of mesotrione. Anal Bioanal Chem 2019; 411:5519-5530. [PMID: 31147761 DOI: 10.1007/s00216-019-01930-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Accepted: 05/16/2019] [Indexed: 10/26/2022]
Abstract
A novel fluorescent probe based on molecularly imprinted polymers (MIPs) coupled with carbon quantum dots (CQDs) was fabricated and successfully used for selective recognition of mesotrione. In this probe, the biomass-derived CQDs were prepared through a hydrothermal method using mango peels as carbon source, and the whole synthesis procedure was green without chemical reagents. The CQDs were encapsulated into MIPs by using sol-gel technology. After removal of the template molecule mesotrione, specific binding sites are formed and there is electrostatic attraction between the probe and the template molecule. The synthetic CQDs@MIPs were able to selectively capture the target mesotrione with fluorescence quenching via the specific interaction between mesotrione and the recognition cavities. The probe was used for determination of mesotrione in corn to verify the practicality of the proposed method. The detection limit of mesotrione was 4.7 nmol L-1, and the linear range was 15 nmol L-1 to 3000 nmol L-1. Meanwhile, the recoveries of this method for mesotrione were 91.4-96.2%, and the relative standard deviations (RSDs) were 3.2-6.1%. This work provides a novel research method to synthesize CQDs@MIPs with high selectivity (imprinting factor = 5.6), and which can be used for convenient, rapid recognition and sensitive detection of trace compounds from complex matrices.
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Zhang R, Jia C, Zhao L, Pan J, Niu Q, Liu R. Characterization of the interaction between carbon black and three important antioxidant proteins using multi spectroscopy and modeling simulations. CHEMOSPHERE 2019; 222:823-830. [PMID: 30743233 DOI: 10.1016/j.chemosphere.2019.02.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 01/18/2019] [Accepted: 02/05/2019] [Indexed: 06/09/2023]
Abstract
A major user of carbon black is the pigment and dyes industry, where carbon black is incorporated into paints, inks, printers, and plastics. However, little is known about the mechanism underlying the toxicity of carbon black to antioxidant proteins. Carbon black can cause oxidative stress to organisms after they invade into the body. Antioxidant proteins play a key role in keeping the organism from nanoparticle-induced oxidative damage and tend to bind with nanoparticles immediately after their invading into the biological environment, so it is meaningful to elucidate the toxicity of nanoparticles on the antioxidant proteins. In this study, the toxicity of carbon black (SB100) on three different antioxidant proteins (TF (transferrin), SOD (superoxide dismutase), and LYZ (lysozyme)) were investigated. The multi-spectra studies indicated that SB100 interacted with these three proteins and changed their structure in different ways. SB100 changed the microenvironment of fluorophores in SOD and LYZ by quenching the fluorescence spectra of the two enzymes, while changed that of TF by increasing the fluorescence intensity of TF. SB100 changed the secondary structure of these three proteins by decreasing the α-helix content of TF and increasing that of SOD and LYZ. Moreover, SB100 changed the hydrophobicity of the three proteins in different ways as well. And SOD exhibits a more severe activity inhibition than LYZ after exposed to SB100. In summary, SB100 caused different structural and functional changes to these three antioxidant enzymes.
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Affiliation(s)
- Rui Zhang
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong Province, 266237, PR China
| | - Chenhao Jia
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong Province, 266237, PR China
| | - Lining Zhao
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong Province, 266237, PR China
| | - Jie Pan
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong Province, 266237, PR China
| | - Qigui Niu
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong Province, 266237, PR China
| | - Rutao Liu
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong Province, 266237, PR China.
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Sadeghi-Kaji S, Shareghi B, Saboury AA, Farhadian S. Spermine as a porcine pancreatic elastase activator: spectroscopic and molecular simulation studies. J Biomol Struct Dyn 2019; 38:78-88. [DOI: 10.1080/07391102.2019.1568306] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | - Behzad Shareghi
- Department of Biology, Shahrekord University, Shahrekord, Iran
| | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
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Mohammadi M, Shareghi B, Akbar Saboury A, Farhadian S. Spermine as a possible endogenous allosteric activator of carboxypeptidase A: multispectroscopic and molecular simulation studies. J Biomol Struct Dyn 2019; 38:101-113. [DOI: 10.1080/07391102.2019.1567387] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Mozhgan Mohammadi
- Department of Biology, Faculty of Sciences, Shahrekord University, Shahrekord, Iran
| | - Behzad Shareghi
- Department of Biology, Faculty of Sciences, Shahrekord University, Shahrekord, Iran
| | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Sadegh Farhadian
- Department of Biology, Faculty of Sciences, Shahrekord University, Shahrekord, Iran
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Salehian P, Shareghi B, Hosseini-Koupaei M. Comparative studies on the interaction between biogenic polyamines and bovine intestinal alkaline phosphatases: spectroscopic and theoretical approaches. J Biol Phys 2019; 45:89-106. [PMID: 30734136 DOI: 10.1007/s10867-018-9517-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 12/12/2018] [Indexed: 11/28/2022] Open
Abstract
In this work, the effect of two organic polyamines (spermine and spermidine) on the fluorescence intensity and activity of bovine intestinal alkaline phosphatase (BIALP) are investigated. The interaction of BIALP with spermine and spermidine was studied in a diethanolamine buffer with 0.5 mM magnesium chloride (pH 9.8) and at two temperatures by using the fluorescence quenching method. Furthermore, the activity of enzyme was studied using UV-Vis spectrophotometry in a diethanolamine buffer with 0.5 mM magnesium chloride, at 37 °C, in the absence and presence of different concentrations of each polyamine (0-5 mM). It was demonstrated that both polyamines quenched the intrinsic fluorescence of BIALP by the static quenching process. Based on these results, the values of the binding site for both polyamines were close to each other and decreased by increasing the temperature. The calculated thermodynamic parameters (ΔH° < 0 and ΔS° < 0) also showed that the acting forces in the formation of the complex between BIALP and polyamines were hydrogen bonds and van der Waals forces with an overall favorable Gibbs free energy change (∆G° < 0). In addition, kinetic studies revealed that these polyamines enhanced the enzyme activity of BIALP in a concentration-dependent manner. This result also indicated that spermine had more of an effect on BIALP activity in the same condition. Also, molecular docking as well as thermodynamic parameters showed that hydrogen bonds and van der Waals forces played an important role in the stabilization of BIALP-polyamine complexes.
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Affiliation(s)
- Pegah Salehian
- Department of Biology, Faculty of Science, University of Shahrekord, PO Box 115, Shahrekord, Iran
| | - Behzad Shareghi
- Department of Biology, Faculty of Science, University of Shahrekord, PO Box 115, Shahrekord, Iran.
| | - Mansoore Hosseini-Koupaei
- Department of Biology, Faculty of Science, University of Shahrekord, PO Box 115, Shahrekord, Iran.,Department of Biology, Naghshe Jahan Institute of Higher Education, Isfahan, Iran
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Activity and stability of lysozyme obtained from Rutilus frisii kutum in the presence of nickel oxide nanoparticles. MONATSHEFTE FUR CHEMIE 2019. [DOI: 10.1007/s00706-018-2323-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Lin J, Xu Y, Wang Y, Huang S, Li J, Meti MD, Xu X, Hu Z, Liu J, He Z, Xu H. Dissection of binding of trypsin to its natural inhibitor Gensenoside-Rg1 using spectroscopic methods and molecular modeling. J Biomol Struct Dyn 2018; 37:4070-4079. [DOI: 10.1080/07391102.2018.1539411] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Jialiang Lin
- College of Life Sciences and Oceanography, Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, Shenzhen University, Shenzhen, China
| | - Yang Xu
- College of Life Sciences and Oceanography, Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, Shenzhen University, Shenzhen, China
- School of Science and Engineering, Chinese University of Hong Kong, Shenzhen, China
| | - Yuhan Wang
- College of Life Sciences and Oceanography, Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, Shenzhen University, Shenzhen, China
| | - Songyang Huang
- College of Life Sciences and Oceanography, Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, Shenzhen University, Shenzhen, China
| | - Junwei Li
- College of Life Sciences and Oceanography, Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, Shenzhen University, Shenzhen, China
| | - Manjunath D. Meti
- College of Life Sciences and Oceanography, Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, Shenzhen University, Shenzhen, China
| | - Xu Xu
- College of Life Sciences and Oceanography, Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, Shenzhen University, Shenzhen, China
| | - Zhangli Hu
- College of Life Sciences and Oceanography, Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, Shenzhen University, Shenzhen, China
| | - Johnson Liu
- School Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia
| | - Zhendan He
- School of Medicine, Shenzhen University, Shenzhen, China
| | - Hong Xu
- College of Life Sciences and Oceanography, Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, Shenzhen University, Shenzhen, China
- Key Laboratory of RF Circuits and Systems of Ministry of Education, Hangzhou Dianzi University, Hangzhou, China
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34
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Momeni L, Shareghi B, Farhadian S, Vaziri S, Saboury AA, Raisi F. A molecular simulation and spectroscopic approach to the binding affinity between trypsin and 2-propanol and protein conformation. Int J Biol Macromol 2018; 119:477-485. [DOI: 10.1016/j.ijbiomac.2018.07.162] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 07/24/2018] [Accepted: 07/25/2018] [Indexed: 01/29/2023]
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35
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Meti MD, Lin J, Wang Y, Wu Z, Xu H, Xu X, Han Q, Ying M, Hu Z, He Z. Trypsin inhibition by Ligupurpuroside B as studied using spectroscopic, CD, and molecular docking techniques. J Biomol Struct Dyn 2018; 37:3379-3387. [PMID: 30213239 DOI: 10.1080/07391102.2018.1515115] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
It is well known that Ligupurpuroside B is a water-soluble polyphenolic compound and used to brew bitter tea with antioxidant activities. It acted as a stimulant to the central nervous system and a diuretic (increase the excretion of urine), was used to treat painful throat and high blood pressure, and also exerted weight-loss function. In this regard, a detailed investigation on the mechanism of interaction between Ligupurpuroside B and trypsin could be of great interest to know the pharmacokinetic behavior of Ligupurpuroside B and for the design of new analogues with effective pharmacological properties. Ligupurpuroside B successfully quenched the intrinsic fluorescence of trypsin via static quenching mechanism. The binding constants (Ka) at three temperatures (288, 298, and 308 K) were 1.7841 × 104, 1.6251 × 104 and 1.5483 × 104 L mol-1, respectively. Binding constants revealed the stronger binding interaction between Ligupurpuroside B and trypsin. The number of binding sites approximated to one, indicating a single class of binding for Ligupurpuroside B in trypsin. The enzyme activity result suggested that Ligupurpuroside B can inhibit trypsin activity. Thermodynamic results revealed that both hydrogen bonds and hydrophobic interactions play main roles in stabilization of Ligupurpuroside B-trypsin complex. Circular dichroism (CD) results showed that the conformation of trypsin changed after bound to ligupurpuroside B. Molecular docking indicated that Ligupurpuroside B can enter the hydrophobic cavity of trypsin and was located near Trp215 and Tyr228 of trypsin. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Manjunath D Meti
- a Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography , Shenzhen University , Shenzhen , China.,b Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering , Shenzhen University , Shenzhen , China
| | - Jialiang Lin
- a Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography , Shenzhen University , Shenzhen , China.,b Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering , Shenzhen University , Shenzhen , China
| | - Yuhan Wang
- a Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography , Shenzhen University , Shenzhen , China.,b Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering , Shenzhen University , Shenzhen , China
| | - Zhibing Wu
- a Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography , Shenzhen University , Shenzhen , China.,b Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering , Shenzhen University , Shenzhen , China
| | - Hong Xu
- a Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography , Shenzhen University , Shenzhen , China.,b Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering , Shenzhen University , Shenzhen , China
| | - Xu Xu
- a Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography , Shenzhen University , Shenzhen , China.,b Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering , Shenzhen University , Shenzhen , China
| | - Qingguo Han
- a Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography , Shenzhen University , Shenzhen , China.,b Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering , Shenzhen University , Shenzhen , China
| | - Ming Ying
- a Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography , Shenzhen University , Shenzhen , China.,b Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering , Shenzhen University , Shenzhen , China
| | - Zhangli Hu
- a Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography , Shenzhen University , Shenzhen , China.,b Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering , Shenzhen University , Shenzhen , China
| | - Zhendan He
- c School of Medicine , Shenzhen University , Shenzhen , China
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Wu Z, Huang F, Chen Y, Xu H, Meti MD, Fan Y, Han QG, Tang H, He Z, Hu Z. Conformation change of trypsin induced by acteoside as studied using multiple spectroscopic and molecular docking methods. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2018. [DOI: 10.1080/10942912.2018.1454944] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Zhibing Wu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Fengwen Huang
- Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Yutao Chen
- Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand
| | - Hong Xu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
- Key Laboratory of RF Circuits and Systems of Ministry of Education, Hangzhou Dianzi University, Hangzhou, China
| | - Manjunath D. Meti
- Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Yu Fan
- Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Qingguo G. Han
- Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Haifeng Tang
- Department of Gynecology and Obstetrics, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Zhendan He
- School of Medicine, Shenzhen University, Shenzhen, China
| | - Zhangli Hu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology/Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
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Gao B, Chen T, Cui K. Constituting of a new surface-initiating system on polymeric microspheres and preparation of basic protein surface-imprinted material in aqueous solution. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4167] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Baojiao Gao
- Department of Chemical Engineering; North University of China; Taiyuan 030051 China
| | - Tao Chen
- Department of Chemical Engineering; North University of China; Taiyuan 030051 China
| | - Kunli Cui
- Department of Chemical Engineering; North University of China; Taiyuan 030051 China
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Chi Z, Zhao J, Li W, Araghi A, Tan S. In vitro assessment of phthalate acid esters-trypsin complex formation. CHEMOSPHERE 2017; 185:29-35. [PMID: 28683334 DOI: 10.1016/j.chemosphere.2017.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2017] [Revised: 06/08/2017] [Accepted: 07/01/2017] [Indexed: 06/07/2023]
Abstract
In this work, interactions of three phthalate acid esters (PAEs), including dimethyl phthalate (DMP), diethyl phthalate (DEP) and dibutyl phthalate (DBP), with trypsin have been studied in vitro, under simulated physiological conditions using multi-spectroscopic techniques and molecular modeling. The results show that these PAEs can bind to the trypsin, forming trypsin-PAEs complexes, mainly via hydrophobic interactions, with the affinity order of DMP > DEP > DBP. Binding to the PAEs is found to result in molecular deformation of trypsin. The modeling results suggest that only DBP can bind with the amino acid residues of the catalytic triad and S1 binding pocket of trypsin, leading to potential competitive enzyme inhibition.
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Affiliation(s)
- Zhenxing Chi
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai, 264209, PR China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China; Guangzhou Key Laboratory of Environmental Exposure and Health, School of Environment, Jinan University, Guangzhou 510632, PR China.
| | - Jing Zhao
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai, 264209, PR China
| | - Weiguo Li
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai, 264209, PR China
| | - Arash Araghi
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney 2006, Australia
| | - Songwen Tan
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai, 264209, PR China
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39
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Wu Q, Wan J, He Z, Liu R. Spectroscopic investigations on the conformational changes of lysozyme effected by different sizes of N-acetyl-l-cysteine-capped CdTe quantum dots. J Biochem Mol Toxicol 2017; 31. [PMID: 28902442 DOI: 10.1002/jbt.21982] [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: 07/08/2017] [Revised: 08/16/2017] [Accepted: 08/19/2017] [Indexed: 11/11/2022]
Abstract
The effect of N-acetyl-l-cysteine-capped CdTe quantum dots (NAC-CdTe QDs) with different sizes on lysozyme was investigated by isothermal titration calorimetry (ITC), enzyme activity assays, and multi-spectroscopic methods. ITC results proved that NAC-CdTe QDs can spontaneously bind with lysozyme and hydrophobic force plays a major role in stabilizing QDs-lysozyme complex. Multi-spectroscopic measurements revealed that NAC-CdTe QDs caused strong quenching of the lysozyme's fluorescence in a size-dependent quenching manner. Moreover, the changes of secondary structure and microenvironment in lysozyme caused by the NAC-CdTe QDs were higher with a bigger size. The results of enzyme activity assays showed that the interaction between lysozyme and NAC-CdTe QDs inhibited the activity of lysozyme and the inhibiting effect was in a size-dependent manner. Based on these results, we conclude that NAC-CdTe QDs with larger particle size had a larger impact on the structure and function of lysozyme.
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Affiliation(s)
- Qianqian Wu
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, Jinan, 250100, People's Republic of China
| | - Jingqiang Wan
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, Jinan, 250100, People's Republic of China
| | - Zhuo He
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, Jinan, 250100, People's Republic of China
| | - Rutao Liu
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, Jinan, 250100, People's Republic of China
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40
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Fang Q, Xing M, Guo C, Liu Y. Probing the interaction of doxycycline to trypsin and bovine hemoglobin by using multi-spectral techniques and molecular docking. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.07.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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41
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Fang Q, Guo C, Wang Y, Liu Y. The study on interactions between levofloxacin and model proteins by using multi-spectroscopic and molecular docking methods. J Biomol Struct Dyn 2017; 36:2032-2044. [PMID: 28604271 DOI: 10.1080/07391102.2017.1341335] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The interactions of levofloxacin (LEV) with lysozyme (LYZ), trypsin and bovine hemoglobin (BHb) were investigated, respectively, by using multi-spectral techniques and molecular docking in vitro. Fluorescence studies showed that LEV quenched LYZ/trypsin fluorescence in a combined quenching ways and BHb fluorescence in a static quenching with binding constants of .14, .51 and .20 × 105 L mol-1 at 298 K, respectively. The thermodynamic parameters demonstrated that hydrophobic forces, hydrogen bonds, and van der Waals forces played the major role in the binding process. The binding distances between LEV and the inner tryptophan residues of LYZ, trypsin, and BHb were calculated to be 4.04, 3.38, and 4.52 nm, respectively. Furthermore, the results of circular dichroism spectra (CD), UV-vis, and three-dimensional fluorescence spectra indicated that the secondary structures of LYZ, trypsin, and BHb were partially changed by LEV with the α-helix percentage of LYZ-LEV system increased while that of BHb-LEV system was decreased, the β-sheet percentage of trypsin-LEV system increased from 41.3 to 42.9%. UV-vis spectral results showed that the binding interactions could cause conformational and some micro-environmental changes of LYZ, trypsin, and BHb. The results of molecular docking revealed that in LYZ and trypsin systems, LEV bound to the active sites residues GLU 35 and ASP 52 of LYZ and trypsin at the active site SER 195, and in BHb system, LEV was located in the central cavity, which was consistent with the results of synchronous fluorescence experiment. Besides, LEV made the activity of LYZ decrease while the activity of trypsin increased.
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Affiliation(s)
- Qing Fang
- a College of Life and Environmental Sciences, Minzu University of China , Beijing 100081 , China
| | - Chenhui Guo
- a College of Life and Environmental Sciences, Minzu University of China , Beijing 100081 , China
| | - Yirun Wang
- a College of Life and Environmental Sciences, Minzu University of China , Beijing 100081 , China
| | - Ying Liu
- a College of Life and Environmental Sciences, Minzu University of China , Beijing 100081 , China.,b Beijing Engineering Research Center of Food Environment and Public Health, Minzu University of China , Beijing 100081 , China
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42
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The functional and structural stabilization of trypsin by sucrose. Int J Biol Macromol 2017; 99:343-349. [DOI: 10.1016/j.ijbiomac.2017.02.090] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 02/16/2017] [Accepted: 02/25/2017] [Indexed: 11/18/2022]
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43
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Hosseini-Koupaei M, Shareghi B, Saboury AA. Conjugation of biogenic polyamine (putrescine) with proteinase K: Spectroscopic and theoretical insights. Int J Biol Macromol 2017; 98:150-158. [DOI: 10.1016/j.ijbiomac.2017.01.111] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 01/21/2017] [Accepted: 01/25/2017] [Indexed: 11/27/2022]
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44
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Hosseini-Koupaei M, Shareghi B, Saboury AA, Davar F. Molecular investigation on the interaction of spermine with proteinase K by multispectroscopic techniques and molecular simulation studies. Int J Biol Macromol 2017; 94:406-414. [DOI: 10.1016/j.ijbiomac.2016.10.038] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Revised: 09/30/2016] [Accepted: 10/14/2016] [Indexed: 11/17/2022]
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45
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A spectroscopic and thermal stability study on the interaction between putrescine and bovine trypsin. Int J Biol Macromol 2017; 94:145-153. [DOI: 10.1016/j.ijbiomac.2016.10.009] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 10/02/2016] [Accepted: 10/05/2016] [Indexed: 01/25/2023]
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46
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Wu Z, Shen L, Han Q, Lu J, Tang H, Xu X, Xu H, Huang F, Xie J, He Z, Zeng Z, Hu Z. Mechanism and Nature of Inhibition of Trypsin by Ligupurpuroside A, a Ku-Ding Tea Extract, Studied by Spectroscopic and Docking Methods. FOOD BIOPHYS 2016. [DOI: 10.1007/s11483-016-9465-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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47
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Ma X, He J, Huang Y, Xiao Y, Wang Q, Li H. Investigation and comparison of the binding between tolvaptan and pepsin and trypsin: Multi-spectroscopic approaches and molecular docking. J Mol Recognit 2016; 30. [DOI: 10.1002/jmr.2598] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 11/04/2016] [Accepted: 11/06/2016] [Indexed: 12/19/2022]
Affiliation(s)
- Xiangling Ma
- College of Chemical Engineering; Sichuan University; Chengdu Sichuan China
| | - Jiawei He
- College of Chemical Engineering; Sichuan University; Chengdu Sichuan China
| | - Yanmei Huang
- College of Chemical Engineering; Sichuan University; Chengdu Sichuan China
| | - Ying Xiao
- College of Chemical Engineering; Sichuan University; Chengdu Sichuan China
| | - Qing Wang
- College of Chemical Engineering; Sichuan University; Chengdu Sichuan China
| | - Hui Li
- College of Chemical Engineering; Sichuan University; Chengdu Sichuan China
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48
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Salehi F, Emamzadeh R, Nazari M, Rasa SMM. Probing the emitter site of Renilla luciferase using small organic molecules; an attempt to understand the molecular architecture of the emitter site. Int J Biol Macromol 2016; 93:1253-1260. [PMID: 27651278 DOI: 10.1016/j.ijbiomac.2016.09.060] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 09/16/2016] [Indexed: 11/29/2022]
Abstract
Renilla luciferase is a sensitive enzyme and has wide applications in biotechnology such as drug screening. Previous studies have tried to show the catalytic residues, nevertheless, the accurate architecture and molecular behavior of its emitter site remains uncharacterized. In this study, the activity of Renilla luciferase, in the presence of two small organic molecules including dimethyl sulfoxide (DMSO) and isopropanol was considered and the structure was studied by circular dichroism (CD) and fluorescence spectroscopy. Moreover, the interaction of small organic molecules with the Renilla luciferase was studied using molecular dynamics simulations. Kinetics studies showed that at low concentration of DMSO (16.6-66mM) and isopropanol (19.3-76mM) the Km changed and a competitive inhibition pattern was observed. Moreover, spectroscopy studies reveled that the changes of activity of Renilla luciferase in the presence of low concentrations of small organic molecules was not associated with structural collapse or severe changes in the enzyme conformation. Molecular dynamics simulations indicated that DMSO and isopropanol, as probing molecules, were both able to bind to the emitter site and remained with the residues of the emitter site. Based on the probing data, the architecture of the emitter site in the "non-binding" model was proposed.
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Affiliation(s)
| | | | - Mahboobeh Nazari
- Monoclonal Antibody Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
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49
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Momeni L, Shareghi B, Saboury AA, Farhadian S. Comparative Studies on the Interaction of Spermidine with Bovine Trypsin by Multispectroscopic and Docking Methods. J Phys Chem B 2016; 120:9632-41. [DOI: 10.1021/acs.jpcb.6b06648] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lida Momeni
- Department
of Biology, Faculty of Science, University of Payam Noor, Tehran 19166, Iran
| | - Behzad Shareghi
- Department
of Biology, Faculty of Science, University of Shahrekord, P.O. Box 11, Shahrekord 88186/34141, Iran
| | | | - Sadegh Farhadian
- Department
of Biology, Faculty of Science, University of Shahrekord, P.O. Box 11, Shahrekord 88186/34141, Iran
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50
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Momeni L, Shareghi B, Saboury AA. Spectroscopic analysis of the interaction between NiO nanoparticles and bovine trypsin. J Biomol Struct Dyn 2016; 35:1381-1388. [DOI: 10.1080/07391102.2016.1185041] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Lida Momeni
- Faculty of Science, Department of Biology, University of Shahrekord, P.O. Box.115, Shahrekord, Iran
- Faculty of Science, Department of Biology, University of Payam Noor, Shahrekord, Iran
| | - Behzad Shareghi
- Faculty of Science, Department of Biology, University of Shahrekord, P.O. Box.115, Shahrekord, Iran
| | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
- Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran
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