1
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Revankar AG, Bagewadi ZK, Shaikh IA, Mannasaheb BA, Ghoneim MM, Khan AA, Asdaq SMB. In-vitro and computational analysis of Urolithin-A for anti-inflammatory activity on Cyclooxygenase 2 (COX-2). Saudi J Biol Sci 2023; 30:103804. [PMID: 37727526 PMCID: PMC10505678 DOI: 10.1016/j.sjbs.2023.103804] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/16/2023] [Accepted: 09/01/2023] [Indexed: 09/21/2023] Open
Abstract
Cyclooxygenase 2 (COX-2) participates in the inflammation process by converting arachidonic acid into prostaglandin G2 which increases inflammation, pain and fever. COX-2 has an active site and a heme pocket and blocking these sites stops the inflammation. Urolithin A is metabolite of ellagitannin produced from humans and animals gut microbes. In the current study, Urolithin A showed good pharmacokinetic properties. Molecular docking of the complex of Urolithin A and COX-2 revealed the ligand affinity of -7.97 kcal/mol with the ligand binding sites at TYR355, PHE518, ILE517 and GLN192 with the 4-H bonds at a distance of 2.8 Å, 2.3 Å, 2.5 Å and 1.9 Å. The RMSD plot for Urolithin A and COX-2 complex was observed to be constant throughout the duration of dynamics. A total of 3 pair of hydrogen bonds was largely observed on average of 3 simulation positions for dynamics duration of 500 ns. The MMPBSA analysis showed that active site amino acids had a binding energy of -22.0368 kJ/mol indicating that throughout the simulation the protein of target was bounded by Urolithin A. In-silico results were validated by biological assays. Urolithin A strongly revealed to exhibit anti-inflammatory effect on COX-2 with an IC50 value of 44.04 µg/mL. The anti-inflammatory capability was also depicted through reduction of protein denaturation that showed 37.6 ± 0.1 % and 43.2 ± 0.07 % reduction of protein denaturation for BSA and egg albumin respectively at 500 µg/mL. The present study, suggests Urolithin A to be an effective anti-inflammatory compound for therapeutic use.
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Affiliation(s)
- Archana G. Revankar
- Department of Biotechnology, KLE Technological University, Hubballi, Karnataka 580031, India
| | - Zabin K. Bagewadi
- Department of Biotechnology, KLE Technological University, Hubballi, Karnataka 580031, India
| | - Ibrahim Ahmed Shaikh
- Department of Pharmacology, College of Pharmacy, Najran University, Najran 66462, Saudi Arabia
| | | | - Mohammed M. Ghoneim
- Department of Pharmacy Practice, College of Pharmacy, AlMaarefa University, Ad Diriyah 13713, Saudi Arabia
| | - Aejaz Abdullatif Khan
- Department of General Science, Ibn Sina National College for Medical Studies, Jeddah 21418, Saudi Arabia
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2
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Yaraguppi DA, Bagewadi ZK, Patil NR, Mantri N. Iturin: A Promising Cyclic Lipopeptide with Diverse Applications. Biomolecules 2023; 13:1515. [PMID: 37892197 PMCID: PMC10604914 DOI: 10.3390/biom13101515] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/10/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023] Open
Abstract
This comprehensive review examines iturin, a cyclic lipopeptide originating from Bacillus subtilis and related bacteria. These compounds are structurally diverse and possess potent inhibitory effects against plant disease-causing bacteria and fungi. Notably, Iturin A exhibits strong antifungal properties and low toxicity, making it valuable for bio-pesticides and mycosis treatment. Emerging research reveals additional capabilities, including anticancer and hemolytic features. Iturin finds applications across industries. In food, iturin as a biosurfactant serves beyond surface tension reduction, enhancing emulsions and texture. Biosurfactants are significant in soil remediation, agriculture, wound healing, and sustainability. They also show promise in Microbial Enhanced Oil Recovery (MEOR) in the petroleum industry. The pharmaceutical and cosmetic industries recognize iturin's diverse properties, such as antibacterial, antifungal, antiviral, anticancer, and anti-obesity effects. Cosmetic applications span emulsification, anti-wrinkle, and antibacterial use. Understanding iturin's structure, synthesis, and applications gains importance as biosurfactant and lipopeptide research advances. This review focuses on emphasizing iturin's structural characteristics, production methods, biological effects, and applications across industries. It probes iturin's antibacterial, antifungal potential, antiviral efficacy, and cancer treatment capabilities. It explores diverse applications in food, petroleum, pharmaceuticals, and cosmetics, considering recent developments, challenges, and prospects.
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Affiliation(s)
- Deepak A. Yaraguppi
- Department of Biotechnology, KLE Technological University, Hubballi 580031, Karnataka, India;
| | - Zabin K. Bagewadi
- Department of Biotechnology, KLE Technological University, Hubballi 580031, Karnataka, India;
| | - Ninganagouda R. Patil
- Department of Physics, B. V Bhoomaraddi College of Engineering and Technology, Hubballi 580031, Karnataka, India;
| | - Nitin Mantri
- The Pangenomics Lab, School of Science, RMIT University, Bundoora, VIC 3083, Australia
- The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6009, Australia
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3
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Melavanki R, Kusanur R, Sharma K, Sadasivuni KK, Koppal VV, Patil NR. Exploration of spectroscopic, computational, fluorescence turn-off mechanism, molecular docking and in silico studies of pyridine derivative. Photochem Photobiol Sci 2023:10.1007/s43630-023-00427-z. [PMID: 37184774 DOI: 10.1007/s43630-023-00427-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 04/20/2023] [Indexed: 05/16/2023]
Abstract
The present work reports pyridine-based chalones using spectroscopic techniques to use pyridine derivative analysis. The solvatochromic behavior of 3DPP in non-polar, polar protic and aprotic solvents has been investigated experimentally. The photophysical property of the compound in diverse solvents is attributed to the intra-molecular charge transfer interactions. The dipole moment of 3DPP is estimated theoretically and experimentally using various solvatochromic methods. It is observed that there is a bathochromic shift in the emission spectra of 3DPP, which confirms the π → π* transition. Fluorescence quenching of 3DPP is studied. The type of fluorescence quenching mechanism is found to be collisional quenching. A study of FRET theory on 3DPP was carried out with metal ions. There is a considerable energy transfer between 3DPP and metal ions. NLO behaviors of the compound have been revealed with the help of Kurtz-Perry powder technique. Additionally, the title molecule is docked, carried ADMET studies and drug-like activity using in silico tools. It is probed for antifungal activity through bioinformatics kit which showed potential information.
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Affiliation(s)
- Raveendra Melavanki
- Department of Physics, M. S. Ramaiah Institute of Technology, Bangalore, Karnataka, 560054, India.
- Autonomous, Affiliated to Visvesvaraya Technological University, Belagavi, Karnataka, 590018, India.
| | - Raviraj Kusanur
- Department of Chemistry, R.V. College of Engineering, Bangalore, Karnataka, India
| | - Kalpana Sharma
- Department of Physics, M. S. Ramaiah Institute of Technology, Bangalore, Karnataka, 560054, India
- Autonomous, Affiliated to Visvesvaraya Technological University, Belagavi, Karnataka, 590018, India
| | | | - V V Koppal
- Department of Physics, KLE Technological University, Hubli, Karnataka, 580031, India
| | - N R Patil
- Department of Physics, B V B College of Engineering and Technology, Hubli, Karnataka, 580031, India.
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4
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Bagewadi ZK, Aakanksha UK, Yaraguppi DA, Yunus Khan TM, Deshpande SH, Dammalli M, Revankar AG, Savalagi AJ, Hiremath SV. Molecular docking and simulation studies against nucleoside diphosphate kinase (NDK) of Pseudomonas aeruginosa with secondary metabolite identified by genome mining from paenibacillusehimensis. J Biomol Struct Dyn 2023; 41:12610-12619. [PMID: 36651083 DOI: 10.1080/07391102.2023.2167118] [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: 05/30/2022] [Accepted: 01/05/2023] [Indexed: 01/19/2023]
Abstract
Pseudomonas aeruginosa is one of the leading opportunistic pathogens that causes nosocomial pneumonia and mostly in people with cystic fibrosis. In the present study, an in-silicoapproach was adopted to identify the novel drug target against Pseudomonas aeruginosa by employing subtractive genomics and molecular docking studies. Each step in the subtractive genomics scrutinized the bacterial proteome and determined a potential drug target against Pseudomonas aeruginosa. 71 essential proteins were obtained from the subcellular localization method that resides in the extracellular region. Metabolic pathways were studied to elucidate the unique pathways where the involvement of proteins present in the pathogen was predicted and a total of 6 unique pathways were determined. By, Genome mining of the source organism Paenibacillusehimensis, 9 ligands were obtained. The molecular docking analysis between the binding site of target protein NDK and ligands was carried out by employing the AutoDock Vina tool. Based on the highest binding affinity, Paenibactin, AnabaenopeptinNZ857 and Nostamide A complex with NDK protein with a lower binding energy of -7.5 kcal/mol, -7.4and -7.2 kcal/molrespectively were considered for the simulation studies. Molecular dynamics simulation studies showed the ligand in complex with protein was highly stable and rigid for a duration of 150 ns. For Paenibactin, AnabaenopeptinNZ857 and Nostamide Acomplex with protein, RMSD plot showed a deviation of ∼0.2-0.3 nm till ∼30ns/50 ns-110ns and further stabilized. The radius of the gyration plot clearly showed that the values stayed at ∼1.45 nm- 1.55 nm showing compactness and stability. The SASA stayed at the range ∼80nm2 and at least one total number of hydrogen bonds was shown throughout the 150 ns simulation for all three possible ligand-protein complexes. In the RMSF plot, the maximum fluctuation was ranged from ∼0.4-0.42 nm at the range between ∼57ns-60ns.The Paenibactin, AnabaenopeptinNZ857 and Nostamide A complex with NDK protein showed a stable, rigid and compact interaction throughout the simulation of duration 150 ns.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Zabin K Bagewadi
- Department of Biotechnology, KLE Technological University, Hubballi, India
| | - U K Aakanksha
- Department of Biotechnology, KLE Technological University, Hubballi, India
| | - Deepak A Yaraguppi
- Department of Biotechnology, KLE Technological University, Hubballi, India
| | - T M Yunus Khan
- Department of Mechanical Engineering, College of Engineering, King Khalid University, Abha, Kingdom of Saudi Arabia
| | - Sanjay H Deshpande
- Department of Biotechnology, KLE Technological University, Hubballi, India
| | - Manjunath Dammalli
- Department of Biotechnology, Siddaganga Institute of Technology, Tumkur, India
| | - Archana G Revankar
- Department of Biotechnology, KLE Technological University, Hubballi, India
| | - Anudeep J Savalagi
- Department of Biotechnology, KLE Technological University, Hubballi, India
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5
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Translocation of subunit PPSE in plipastatin synthase and synthesis of novel lipopeptides. Synth Syst Biotechnol 2022; 7:1173-1180. [PMID: 36204332 PMCID: PMC9519435 DOI: 10.1016/j.synbio.2022.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 08/01/2022] [Accepted: 09/07/2022] [Indexed: 11/20/2022] Open
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6
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Koppal V, Melavanki R, Kusanur R, Bagewadi ZK, Yaraguppi DA, Deshpande SH, Patil NR. Investigation of the Fluorescence Turn-off Mechanism, Genome, Molecular Docking In Silico and In Vitro Studies of 2-Acetyl-3 H-benzo[ f]chromen-3-one. ACS OMEGA 2022; 7:23759-23770. [PMID: 35847316 PMCID: PMC9280945 DOI: 10.1021/acsomega.2c02424] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The present study harnesses fluorescence quenching between a nonfluorescent aniline and fluorophore 2-acetyl-3H-benzo[f]chromen-3-one [2AHBC] in binary solvent mixtures of acetonitrile and 1,4-dioxane at room temperature and explores the fluorophore as an antimicrobial material. Our findings throw light on the key performance of organic molecules in the medicinal and pharmaceutical fields, which are considered as the most leading drives in therapeutic applications. In view of that, fluorescence quenching data have been interpreted by various quenching models. This demonstrates that the sphere of action holds very well in the present work and also confirms the presence of static quenching reactions. Additionally, the fluorophore was first investigated for druglike activity with the help of in silico tools, and then it was investigated for antimicrobial activity through bioinformatics tools, which has shown promising insights.
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Affiliation(s)
- Varsha
V. Koppal
- Department
of Physics, KLE Technological University, Hubli 580031, Karnataka, India
| | - Raveendra Melavanki
- Department
of Physics, M S Ramaiah Institute of Technology, Bangalore 560054, Karnataka, India
| | - Raviraj Kusanur
- Department
of Chemistry, RV College of Engineering, Bangalore 560059, Karnataka, India
| | - Zabin K. Bagewadi
- Department
of Biotechnology, KLE Technological University, Hubli 580031, Karnataka, India
| | - Deepak A. Yaraguppi
- Department
of Biotechnology, KLE Technological University, Hubli 580031, Karnataka, India
| | - Sanjay H. Deshpande
- Department
of Biotechnology, KLE Technological University, Hubli 580031, Karnataka, India
| | - Ninganagouda R. Patil
- Department
of Physics, B V B College of Engineering
and Technology, Hubli 580031, Karnataka, India
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7
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Gene Expression and Characterization of Iturin A Lipopeptide Biosurfactant from Bacillus aryabhattai for Enhanced Oil Recovery. Gels 2022; 8:gels8070403. [PMID: 35877488 PMCID: PMC9319305 DOI: 10.3390/gels8070403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/16/2022] [Accepted: 06/20/2022] [Indexed: 12/04/2022] Open
Abstract
Biosurfactants are eco-friendly surface-active molecules recommended for enhanced oil recovery techniques. In the present study, a potential lipopeptide (biosurfactant) encoding the iturin A gene was synthesized from Bacillus aryabhattai. To improvise the yield of the lipopeptide for specific applications, current research tends toward engineering and expressing recombinant peptides. An iturin A gene sequence was codon-optimized, amplified with gene-specific primers, and ligated into the pET-32A expression vector to achieve high-level protein expression. The plasmid construct was transformed into an E. coli BL21 DE3 host to evaluate the expression. The highly expressed recombinant iturin A lipopeptide was purified on a nickel nitrilotriacetic acid (Ni-NTA) agarose column. Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) revealed that the purity and molecular mass of iturin A was 41 kDa. The yield of recombinant iturin A was found to be 60 g/L with a 6.7-fold increase in comparison with our previously published study on the wild strain. The approach of cloning a functional fragment of partial iturin A resulted in the increased production of the lipopeptide. When motor oil was used, recombinant protein iturin A revealed a biosurfactant property with a 74 ± 1.9% emulsification index (E24). Purified recombinant protein iturin A was characterized by mass spectrometry. MALDI-TOF spectra of trypsin digestion (protein/trypsin of 50:1 and 25:1) showed desired digested mass peaks for the protein, further confirming the identity of iturin A. The iturin A structure was elucidated based on distinctive spectral bands in Raman spectra, which revealed the presence of a peptide backbone and lipid. Recombinant iturin A was employed for enhanced oil recovery through a sand-packed column that yielded 61.18 ± 0.85% additional oil. Hence, the novel approach of the high-level expression of iturin A (lipopeptide) as a promising biosurfactant employed for oil recovery from Bacillus aryabhattai is not much reported. Thus, recombinant iturin A demonstrated its promising ability for efficient oil recovery, finding specific applications in petroleum industries.
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8
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Banerjee S, Sen S, Bhakat A, Bhowmick A, Sarkar K. The lipopeptides Fengycin and Iturin are involved in the anticandidal activity of endophytic Bacillus sp. as determined by experimental and in-silico analysis. Lett Appl Microbiol 2022; 75:450-459. [PMID: 35620862 DOI: 10.1111/lam.13750] [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: 03/01/2022] [Revised: 04/28/2022] [Accepted: 05/21/2022] [Indexed: 11/28/2022]
Abstract
In this study, an endophytic Bacillus sp. strain (K7) was isolated from the medicinally important ornamental plant, Jasminum officinale. Biochemical analyses were conducted to evaluate the nature of the extracted product, which displayed strong anticandidal activity against Candida albicans SC5314, as evident from the results obtained in agar-cup diffusion tests, phase contrast microscopy, scanning electron microscopy, and minimum inhibitory concentration assays. After confirming the presence of the gene clusters encoding the lipopeptides iturins and fengycin in the genome of K7, their corresponding molecular ions were identified using MALDI-TOF-MS. 3D structures of the lipopeptides were downloaded from specific databases and molecular docking was performed against a vital C. albicans enzyme, Exo 1, 3- beta-glucanase, involved in cell wall remodeling, adhesion to polymer materials, and biofilm formation. The docking score of iturins was found to be -8.6 and -8.2 kcal mol-1 and for fengycin it was -9.4 kcal mol-1 , indicating a strong affinity of these cyclic lipopeptides towards Exo 1, 3- beta-glucanase. The combined in vitro and in-silico anticandidal studies suggested that these secreted lipopeptides from Bacillus sp. may be used as potential therapeutics against opportunistic and complicated infections of Candida albicans.
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Affiliation(s)
- Saikat Banerjee
- Department of Microbiology, University of Kalyani, Kalyani, West Bengal, India
| | - Samya Sen
- Department of Microbiology, University of Kalyani, Kalyani, West Bengal, India.,Department of Bioscience and Bioengineering, Indian Institute of Technology, Jodhpur, Rajasthan, India
| | - Ankika Bhakat
- Department of Microbiology, University of Kalyani, Kalyani, West Bengal, India
| | - Arpita Bhowmick
- Department of Microbiology, University of Kalyani, Kalyani, West Bengal, India
| | - Keka Sarkar
- Department of Microbiology, University of Kalyani, Kalyani, West Bengal, India
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9
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In Silico Study on the Inhibition of UDP-N-Acetylglucosamine 1-Carboxy Vinyl Transferase from Salmonella typhimurium by the Lipopeptide Produced from Bacillus aryabhattai. Int J Pept Res Ther 2022. [DOI: 10.1007/s10989-022-10388-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Sharma RK, Jalalpure SS, Chouhan MK, Deshpande S, Acharya R, Hegde S. Decipher the inhibitory potential of phytocompounds from Leptadenia reticulata on dopamine D2 receptor to enhance prolactin secretion. Drug Res (Stuttg) 2022; 72:189-196. [PMID: 35176795 DOI: 10.1055/a-1735-2887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Dopamine is secreted by the hypothalamus, which inhibits the proliferation and effectiveness of lactotroph cells that release prolactin via dopamine D2 receptor (D2R). D2R activation inhibits lactotroph cell prolactin synthesis and regulates prolactin gene expression. Although, commercial medications are available for hypogalactia and agalactia, various plant sources significantly alleviate these problems. Leptadenia reticulata (Jivanti) is one of the important medicinal plants often consumed by nursing mothers to improve breast milk production. However, mechanism and chemical constituents involved in the inhibition of D2R by Jivanti is unclear. Therefore, in this study the phytocompounds reported from Jivanti were used for in-silico analysis to predict D2R inhibitory potential. The binding affinity value of campesterol and β-sitosterol (- 10.1 and -10.0 kcal/mol) with D2R has high revealed by molecular docking and stable interaction reveled by molecular dynamics simulation. Thus, these lead compounds could exert more D2R inhibitory activity resulting into prolactin release, which may lead to an increase in breast milk production. Although all selected compounds had fine permeation, non-toxic, and non-carcinogenic characteristics predicted by ADMET, campesterol had good solubility, absorption characteristics compared to other. Therefore, Jivanti, which is traditionally known medicinal plant, could be explored as a medication candidate to boost breast milk production.
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Affiliation(s)
- Roshan Kumar Sharma
- KLE Academy of Higher Education and Research, Dr. Prabhakar Kore Basic Science Research Center, Belagavi, India
| | - Sunil S Jalalpure
- KLE College of Pharmacy, Belagavi, KLE Academy of Higher Education and Research, Belagavi, India
| | - Mahendra Kumar Chouhan
- KLE Academy of Higher Education and Research, Dr. Prabhakar Kore Basic Science Research Center, Belagavi, India.,Department of Pharmacology, Maharishi Arvind Institute of Pharmacy (MAIP), Jaipur, India
| | - Sanjay Deshpande
- Department of Biotechnology, KLE Technological University, Hubballi, India
| | - Rabinarayan Acharya
- Department of Dravyaguna, Institute for Post Graduate Teaching and Research in Ayurveda, Gujarat Ayurved University, Jamnagar, India
| | - Satisha Hegde
- KLE Academy of Higher Education and Research, Dr. Prabhakar Kore Basic Science Research Center, Belagavi, India.,Department of Microbiology, Belagavi Institute of Medical Sciences, Belagavi, India
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11
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Geraldi A, Famunghui M, Abigail M, Siona Saragih CF, Febitania D, Elmarthenez H, Putri CA, Putri Merdekawati UAS, Sadila AY, Wijaya NH. Screening of antibacterial activities of Bacillus spp. isolated from the Parangkusumo coastal sand dunes, Indonesia. BIO INTEGRATION 2022. [DOI: 10.15212/bioi-2022-0005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Background: The emergence of multidrug-resistant bacteria because of poor understanding of the issue and the misuse of antibiotics has become global health concern. Therefore, the discovery of novel antibacterial drugs is urgently needed. New antibacterial compounds may be found in the Bacillus species, which are abundant in sand dune ecosystems. Herein, we examined samples from the Parangkusumo coastal sand dunes in Indonesia.Methods: Samples were collected from three areas in the sand dunes (the area closest to the sea, the core area of sand dunes, and the area farthest from the sea). The samples were inoculated on Luria Bertani agar. Morphological and molecular identification was performed on the basis of 16S rRNA. The samples’ antimicrobial activity was evaluated with the disc diffusion method and compared with that of opportunistic pathogenic bacteria.Results: Five species of Bacillus were successfully isolated from the Parangkusumo coastal sand dunes. To our knowledge, this is the first report of the isolation of Bacillus aryabhattai in Indonesia. All samples showed antimicrobial activity against pathogenic bacteria. B. velezensis and B. subtilis showed antibacterial activity against Gram-positive bacteria, whereas B. aryabhattai and B. megaterium showed antibacterial activity against Gram-negative bacteria, and B. spizizenii showed antibacterial activity toward Gram-positive and Gram-negative bacteria.Conclusion: Five Bacillus species were successfully isolated from the Parangkusumo coastal sand dunes, Indonesia, and all samples showed antimicrobial activity toward opportunistic pathogenic bacteria. The crude antimicrobial compounds from B. megaterium, B. aryabhattai, B. subtilis, and B. spizizenii showed the highest growth-inhibition activity against E. coli, P. aeruginosa, B. cereus, and S. aureus, respectively.
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Affiliation(s)
- Almando Geraldi
- University-Center of Excellence-Research Center for Bio-Molecule Engineering, Universitas Airlangga, Surabaya 60115, Indonesia
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Surabaya 60115, Indonesia
| | - Margareth Famunghui
- School of Life Sciences and Technology, Institut Teknologi Bandung, Bandung 40132, Indonesia
| | - Mercyana Abigail
- School of Life Sciences and Technology, Institut Teknologi Bandung, Bandung 40132, Indonesia
| | | | - Devina Febitania
- School of Life Sciences and Technology, Institut Teknologi Bandung, Bandung 40132, Indonesia
| | - Henrietta Elmarthenez
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Surabaya 60115, Indonesia
| | - Cinantya Aulia Putri
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Surabaya 60115, Indonesia
| | | | - Aliffa Yusti Sadila
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Surabaya 60115, Indonesia
| | - Nabilla Hapsari Wijaya
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Surabaya 60115, Indonesia
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12
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Patil P, Melavanki R, Radder SB, Kusanur R, Hiremath CS, Patil NR, Hiremath SM. Synthesis, Structural Characterizations, and Quantum Chemical Investigations on 1-(3-Methoxy-phenyl)-3-naphthalen-1-yl-propenone. ACS OMEGA 2021; 6:25982-25995. [PMID: 34660960 PMCID: PMC8515393 DOI: 10.1021/acsomega.1c02688] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 09/15/2021] [Indexed: 05/05/2023]
Abstract
In the present study, 1-(3-methoxy-phenyl)-3-naphthalen-1-yl-propenone (MPNP) is synthesized and characterized by several experimental techniques such as Fourier transform-infrared spectroscopy (FT-IR), FT-Raman, NMR and UV-vis spectral methods. The similar techniques are also investigated by the computational method using Gaussian software. The density functional theory (DFT) method is used to obtain the optimized structure using the B3LYP/6-311++G(d,p) basis set. This optimization procedure of the molecule gives the minimum energy confirmation of the structure. The computed geometrical parameters are compared with experimental data. The experimental FT-IR and FT-Raman spectra of MPNP are obtained in the regions 4000-400 and 4000-50 cm-1 respectively. The detailed vibrational assignments of the molecule are obtained with the support of potential energy distribution. The theoretical NMR (1H and 13C) analysis is conducted by the GIAO method for its structural characterization and compared with experimental chemical shifts. The experimental UV-vis spectrum is obtained in the dimethyl sulfoxide solvent and compared with the theoretically computed spectrum by the time-dependent DFT method. In addition to these studies, other analyses such as nonlinear optical, natural bonds orbital, frontier molecular orbital, molecular electrostatic potential, and NCI have been conducted to understand the nature of the molecule. The title molecule is docked and also the drug-likeness, ADMET studies were carried out. The RBD domain bound to the ACE2 receptor during the fusion makes spike glycoprotein an elusive therapeutic target in SARS-CoV-2 infection.
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Affiliation(s)
- Prakashgouda
G. Patil
- Department
of Physics, J. T. College, Gadag 582102, Karnataka, India
- Department
of Physics, Visvesvaraya Technological University, Belgavi 590018, Karnataka, India
| | - Raveendra Melavanki
- Department
of Physics, M S Ramaiah Institute of Technology, Bangalore 560054, Karnataka, India
- Department
of Physics, Visvesvaraya Technological University, Belgavi 590018, Karnataka, India
| | - Shivaraj B. Radder
- Department
of Physics, M S Ramaiah Institute of Technology, Bangalore 560054, Karnataka, India
- Department
of Physics, Visvesvaraya Technological University, Belgavi 590018, Karnataka, India
| | - Raviraj Kusanur
- Department
of Chemistry, RV College of Engineering, Bangalore 560059, Karnataka, India
| | | | - Ninganagouda R. Patil
- Department
of Physics, B V B College of Engineering
and Technology, Hubli 580031, Karnataka, India
- Department
of Physics, Visvesvaraya Technological University, Belgavi 590018, Karnataka, India
| | - Sudhir M. Hiremath
- Department
of P.G. Studies in Physics, J. T. College, Gadag 582102, Karnataka, India
- Department
of Physics, Visvesvaraya Technological University, Belgavi 590018, Karnataka, India
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Prashanthi R, G K S, S K, L M. Isolation, characterization, and molecular identification of soil bacteria showing antibacterial activity against human pathogenic bacteria. J Genet Eng Biotechnol 2021; 19:120. [PMID: 34406527 PMCID: PMC8374016 DOI: 10.1186/s43141-021-00219-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 07/28/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND The present study dealt with the screening of soil bacteria with antibacterial activity from different locations in Bangalore, India. Antibiotics play the role of self-defense mechanism for the bacteria and are produced as secondary metabolites to protect themselves from other competitive microorganisms. The need for new antibiotics arose as the pathogenic bacteria acquire resistance to various antibiotics meant for treating human diseases. Given the importance of antibiotics of bacterial origin, standard techniques have been used to isolate and characterize the soil bacteria which showed antibacterial activity. RESULTS The isolated bacteria were tested against human pathogenic bacteria like Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, and Klebsiella pneumoniae by primary and secondary screening methods. The isolates PR1, PR2, and PR3 were confirmed to have antibacterial activity against S. aureus, E. coli, P. aeruginosa, and K. pneumoniae by both methods. Studies on the effect of filter sterilization, autoclaving, and proteinase K treatment on culture filtrates showed filter sterilization as the best method. The effect of different carbon and nitrogen sources on the antibacterial activity showed that preference by each isolate differed for carbon and nitrogen requirements. The isolates PR1, PR2, and PR3 were identified as Bacillus aryabhattai strain PR-D07, Arthrobacter humicola strain PR-F07, and Neomicrococcus lactis strain PR-F11 through 16S rRNA sequencing. CONCLUSION Findings from this research work are encouraging and could proceed further to applied aspects. Only 3 bacterial isolates out of 263 isolates from soil samples displayed antibacterial activity against human pathogens S. aureus, E. coli, P. aeruginosa, and K. pneumoniae. They were identified as B. aryabhattai, A. humicola, and N. lactis by 16S rRNA studies and all of them are Gram-positive. Each isolate preferred different carbon and nitrogen sources for their enhanced antibacterial activity. Efficacy of the culture filtrates of these isolates was tested by filter sterilization, autoclaving, and proteinase K treatment. Filter-sterilized culture filtrates showed higher antibacterial activity than other treatments. A comparison of the antibacterial activity of culture filtrates and antibiotic streptomycin produced an inhibition zone of 18.5 mm and 15.5 mm respectively. This is the first report on the antibacterial activity of all the 3 bacterial strains (B. aryabhattai strain PR-D07, A. humicola strain PR-F07, and N. lactis strain PR-F11), against all the human pathogens, mentioned earlier. It is also found that the antibiotic factor is proteinaceous as proteinase K considerably reduced the antibacterial activity of the culture filtrates. With the above significant results, these 3 bacteria are considered to be promising candidates for the isolation of new antibacterial agents.
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Affiliation(s)
- R Prashanthi
- Department of Biotechnology and Genetics, M. S. Ramaiah College of Arts, Science and Commerce, Karnataka, 560054, Bengaluru, India.
| | - Shreevatsa G K
- Department of Biotechnology and Genetics, M. S. Ramaiah College of Arts, Science and Commerce, Karnataka, 560054, Bengaluru, India
| | - Krupalini S
- Department of Biotechnology and Genetics, M. S. Ramaiah College of Arts, Science and Commerce, Karnataka, 560054, Bengaluru, India
| | - Manoj L
- Department of Biotechnology and Genetics, M. S. Ramaiah College of Arts, Science and Commerce, Karnataka, 560054, Bengaluru, India
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