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Şener N, Aldwib AEO. New Antibacterial 1,3,4-Thiadiazole Derivatives With Pyridine Moiety. Chem Biodivers 2024; 21:e202400522. [PMID: 38606431 DOI: 10.1002/cbdv.202400522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/08/2024] [Accepted: 04/10/2024] [Indexed: 04/13/2024]
Abstract
1,3,4-Thiadiazole compounds were synthesized using pyridine carboxylic acid derivatives and thiosemicarbazide derivatives. The molecular structures of the resulting compounds were characterized by spectroscopic methods such as ATR-FTIR, 1H-NMR, and elemental analysis. Its compounds were also examined for their antibacterial properties against some strains of bacteria. Five synthesized compounds showed varying antibacterial effects on Escherichia coli, Salmonella kentucky, Bacillus substilis and Klebsiella pneumoniae. This result revealed that some of the resulting compounds could be antibacterial agents.
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Affiliation(s)
- Nesrin Şener
- Department of Chemistry, Faculty of Science, Kastamonu University, 37200, Kastamonu, Turkey
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2
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Rastija V, Vrandečić K, Ćosić J, Kanižai Šarić G, Majić I, Agić D, Šubarić D, Karnaš M, Bešlo D, Brahmbhatt H, Komar M. Antifungal Activities of Fluorinated Pyrazole Aldehydes on Phytopathogenic Fungi, and Their Effect on Entomopathogenic Nematodes, and Soil-Beneficial Bacteria. Int J Mol Sci 2023; 24:ijms24119335. [PMID: 37298285 DOI: 10.3390/ijms24119335] [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: 05/05/2023] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 06/12/2023] Open
Abstract
Fluoro-substituted pyrazoles have a wide range of biological activities, such as antibacterial, antiviral, and antifungal activities. The aim of this study was to evaluate the antifungal activities of fluorinated 4,5-dihydro-1H-pyrazole derivatives on four phytopathogenic fungi: Sclerotinia sclerotiorum, Macrophomina phaseolina, Fusarium oxysporum f. sp. lycopersici, and F. culmorum. Moreover, they were tested on two soil beneficial bacteria-Bacillus mycoides and Bradyrhizobium japonicum-as well as two entomopathogenic nematodes (EPNs)-Heterorhabditis bacteriophora and Steinernema feltiae. The molecular docking was performed on the three enzymes responsible for fungal growth, the three plant cell wall-degrading enzymes, and acetylcholinesterase (AChE). The most active compounds against fungi S. sclerotiorum were 2-chlorophenyl derivative (H9) (43.07% of inhibition) and 2,5-dimethoxyphenyl derivative (H7) (42.23% of inhibition), as well as H9 against F. culmorum (46.75% of inhibition). Compounds were shown to be safe for beneficial soil bacteria and nematodes, except for compound H9 on EPN H. bacteriophora (18.75% mortality), which also showed the strongest inhibition against AChE (79.50% of inhibition). The molecular docking study revealed that antifungal activity is possible through the inhibition of proteinase K, and nematicidal activity is possible through the inhibition of AChE. The fluorinated pyrazole aldehydes are promising components of future plant protection products that could be environmentally and toxicologically acceptable.
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Affiliation(s)
- Vesna Rastija
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia
| | - Karolina Vrandečić
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia
| | - Jasenka Ćosić
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia
| | - Gabriella Kanižai Šarić
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia
| | - Ivana Majić
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia
| | - Dejan Agić
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia
| | - Domagoj Šubarić
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia
| | - Maja Karnaš
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia
| | - Drago Bešlo
- Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia
| | - Harshad Brahmbhatt
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University, Franje Kuhača 20, 31000 Osijek, Croatia
| | - Mario Komar
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University, Franje Kuhača 20, 31000 Osijek, Croatia
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N2,N6-Bis(6-iodo-2-methyl-4-oxoquinazolin-3(4H)-yl)pyridine-2,6-dicarboxamide. MOLBANK 2022. [DOI: 10.3390/m1500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A green chemistry method was applied in the synthesis of N2,N6-bis(6-iodo-2-methyl-4-oxoquinazolin-3(4H)-yl)pyridine-2,6-dicarboxamide. The desired compound was synthesized mechanochemically, using a choline chloride-based deep eutectic solvent as a catalyst. The synthesis took 20 min and the new compound was characterized using different spectral methods.
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Çot A, Çeşme M, Onur S, Aksakal E, Şahin İ, Tümer F. Rational design of 1,2,3-triazole hybrid structures as novel anticancer agents: synthesis, biological evaluation and molecular docking studies. J Biomol Struct Dyn 2022:1-9. [PMID: 35983627 DOI: 10.1080/07391102.2022.2112620] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
New hybrid compounds belonging to the class of 1,4-disubstituted 1,2,3-triazoles were synthesized. The structural characterization of the synthesized compounds was performed using IR, 1H-NMR, 13C NMR and elemental analysis techniques. Diarylketones 1a and 1b were used as starting compounds for the synthesis of triazoles. The corresponding diarylmethanol derivatives (2a,b) were obtained from reduction of ketone units with NaBH4. Oxyalkynes (3a,b) were obtained by treating the hydroxyl group with NaH in anhydrous THF and then with propargylbromide. The target hybrid structures 6a-n were obtained from the metal-catalyzed "click reaction" of the arylazide and alkyne units. The newly synthesized compounds were structurally analysed using 1H-NMR, 13C-NMR, elemental analysis, LC-MS and FT-IR. The antioxidant and anticancer activities of all compounds were investigated. It has been determined that the new hybrid structures have very good antioxidant and anticancer activities according to the standards. In particular, compounds 6b, 6h, 6i and 6j (IC50: 1.87, 12.5, 7.22, 8.04 µM) showed excellent activity compared to standard 5-Fu (IC50: 40.89 µM). According to the results of molecular docking of compounds 6b and 6i with the highest cancer activity, MetAP-2 was found to have a high affinity through exposed polar and apolar contacts with fundemental residues in the binding pocket.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Aynur Çot
- Department of Chemistry, Faculty of Art and Sciences, Kahramanmaras Sutcu Imam University, Kahramanmaras, Turkey
| | - Mustafa Çeşme
- Department of Chemistry, Faculty of Art and Sciences, Kahramanmaras Sutcu Imam University, Kahramanmaras, Turkey
| | - Sultan Onur
- Department of Chemistry, Faculty of Art and Sciences, Kahramanmaras Sutcu Imam University, Kahramanmaras, Turkey
| | - Elif Aksakal
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Ataturk University, Erzurum, Turkey
| | - İrfan Şahin
- Department of Chemistry, Faculty of Art and Sciences, Kahramanmaras Sutcu Imam University, Kahramanmaras, Turkey
| | - Ferhan Tümer
- Department of Chemistry, Faculty of Art and Sciences, Kahramanmaras Sutcu Imam University, Kahramanmaras, Turkey
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Pachuta-Stec A. Antioxidant Activity of 1,2,4-Triazole and Its Derivatives: A Mini Review. Mini Rev Med Chem 2021; 22:1081-1094. [PMID: 33797373 DOI: 10.2174/1389557521666210401091802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 01/29/2021] [Accepted: 02/21/2021] [Indexed: 02/01/2023]
Abstract
The information about the presence of free radicals in biological materials was given for the first time about 70 years ago. Since then, numerous scientific studies have been conducted and the science of free radicals was born. Today we know that free radicals are by-products of enzymatic reactions occurring in the organism. They are produced during endogenous processes such as: cell respiration, phagocytosis, biosynthesis, catalysis, and biotransformation. They can also be produced by exogenous processes (radiation, sunlight, heavy metals, bacteria, fungi, protozoa and viruses). The overproduction of free radicals affects the aging processes, oxidative stress (OS) and takes part in the pathogenesis of various diseases. Among them are cancer, rheumatoid arthritis, neurodegenerative diseases: Alzheimer and Parkinson, pulmonary diseases, atherosclerosis and DNA damage. Compounds with antioxidant activity are very important nowadays because they allow organisms to keep a balance between the production of free radicals and the speed of their neutralization in the body. Next to the natural antioxidants (flavonoids, carotenoids, vitamins, etc.), synthetic ones are also of great importance. Among synthetic compounds with antioxidant activity are 1,2,4-triazoles and its derivatives. 1,2,4-Triazoles are heterocyclic compounds with three nitrogen atoms. Due to a broad spectrum of biological activities, these derivatives have been of interest to scientists for many years. Some of them are also used as drugs. The finding of new synthetic compounds with antioxidant features in the triazole group has become important problem of medicinal chemistry.
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Affiliation(s)
- Anna Pachuta-Stec
- Independent Radiopharmacy Unit, Faculty of Pharmacy, Medical University of Lublin. Poland
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Fesatidou M, Petrou A, Athina G. Heterocycle Compounds with Antimicrobial Activity. Curr Pharm Des 2020; 26:867-904. [DOI: 10.2174/1381612826666200206093815] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 11/19/2019] [Indexed: 12/19/2022]
Abstract
Background:Bacterial infections are a growing problem worldwide causing morbidity and mortality mainly in developing countries. Moreover, the increased number of microorganisms, developing multiple resistances to known drugs, due to abuse of antibiotics, is another serious problem. This problem becomes more serious for immunocompromised patients and those who are often disposed to opportunistic fungal infections.Objective:The objective of this manuscript is to give an overview of new findings in the field of antimicrobial agents among five-membered heterocyclic compounds. These heterocyclic compounds especially five-membered attracted the interest of the scientific community not only for their occurrence in nature but also due to their wide range of biological activities.Method:To reach our goal, a literature survey that covers the last decade was performed.Results:As a result, recent data on the biological activity of thiazole, thiazolidinone, benzothiazole and thiadiazole derivatives are mentioned.Conclusion:It should be mentioned that despite the progress in the development of new antimicrobial agents, there is still room for new findings. Thus, research still continues.
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Affiliation(s)
- Maria Fesatidou
- School of Health, Department of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
| | - Anthi Petrou
- School of Health, Department of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
| | - Geronikaki Athina
- School of Health, Department of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
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Brahmbhatt H, Molnar M, Pavić V, Rastija V. Synthesis, Characterization, Antibacterial and Antioxidant Potency of NSubstituted- 2-Sulfanylidene-1,3-Thiazolidin-4-one Derivatives and QSAR Study. Med Chem 2019; 15:840-849. [PMID: 30520381 DOI: 10.2174/1573406415666181205163052] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 11/17/2018] [Accepted: 11/27/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Rhodanine is known for its potential and important role in the medicinal chemistry since its derivatives exhibit a wide range of pharmacological activities such as antibacterial, antifungal, antidiabetic, antitubercular, anti-HIV, antiparasitic, antioxidant, anticancer, antiproliferative and anthelmintic agents. OBJECTIVES Since N-substituted rhodanine synthons are rarely commercially available, it is desirable to develop a straightforward synthetic approach for the synthesis of these key building blocks. The objective was to synthesize a series of rhodanine derivatives and to investigate their antimicrobial and antioxidant activity. Also, in order to obtain an insight into their structure-activity relationship, QSAR studies on the antioxidant activity were performed. METHODS 1H and 13C FTNMR spectra were recorded on Bruker Avance 600 MHz NMR Spectrometer, mass analysis was carried out on ESI+ mode by LC-MS/MS API 2000. 2,2-Diphenyl-1- picrylhydrazyl radical scavenging activity (% DPPH) was determined in dimethylsulfoxide (DMSO) as a solvent. The antibacterial activity was assessed against Bacillus subtilis, Staphylococcus aureus (Gram positive) and Escherichia coli, Pseudomonas aeruginosa (Gram negative) bacteria in terms of the minimum inhibitory concentrations (MICs) by a modified broth microdilution method. RESULTS A series of N-substituted-2-sulfanylidene-1,3-thiazolidin-4-ones were synthesized and characterized by 1H NMR, 13C NMR, FTIR, GC MS, LCMS/MS and C,H,N,S elemental analysis. Most of the synthesized compounds showed moderate to excellent antibacterial activity (MIC values from 125 μg/ml to 15.62 μg/mL) and DPPH scavenging activity (from 3.60% to 94.40%). Compound 2-thioxo-3- (4-(trifluoromethyl)-phenyl)thiazolidin-4-one showed the most potent activity against Escherichia coli (3.125 μg/mL), equivalent to antibiotic Amikacin sulphate and against Staphylococcus aureus (0.097 μg/ml), 100 times superior then antibiotic Amikacin sulphate. It has also shown a potent antioxidant activity (95% DPPH scavenging). Two best QSAR models, obtained by GETAWAY descriptor R7p+, Balabans molecular connectivity topological index and Narumi harmonic topological index (HNar), suggest that the enhanced antioxidant activity is related to the presence of pairs of atoms higher polarizability at the topological distance 7, substituted benzene ring and longer saturated aliphatic chain in N-substituents. CONCLUSION A series of novel N-substituted-2-thioxothiazolidin-4-one derivatives were designed, synthesized, characterized and evaluated for their antibacterial and antioxidant activity in vitro. Majority of the compounds showed excellent antibacterial activity compared to ampicillin and few of them have an excellent activity as compared to Chloramphenicol standard antibacterial drug. The QSAR study has clarified the importance of presenting a pairs of atoms higher polarizability, such as Cl and S at the specific distance, as well as the substituted benzene ring and a long saturated aliphatic chain in N-substituents for the enhanced antioxidant activity of 2-sulfanylidene-1,3- thiazolidin-4-one derivatives.
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Affiliation(s)
- Harshad Brahmbhatt
- Department of Applied Chemistry and Ecology, Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Maja Molnar
- Department of Applied Chemistry and Ecology, Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Valentina Pavić
- The Department of Biology, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Vesna Rastija
- Faculty of Agrobiotehnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
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Kumari P, Ansari SN, Kumar R, Saini AK, Mobin SM. Design and Construction of Aroyl-Hydrazone Derivatives: Synthesis, Crystal Structure, Molecular Docking and Their Biological Activities. Chem Biodivers 2019; 16:e1900315. [PMID: 31532059 DOI: 10.1002/cbdv.201900315] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 09/17/2019] [Indexed: 01/10/2023]
Abstract
Here, we report the synthesis and characterization of four new aroyl-hydrazone derivatives L1 -L4 , and their structural as well as biological activities have been explored. In addition to docking with bovine serum albumin (BSA) and duplex DNA, the experimental results demonstrate the effective binding of L1 -L4 with BSA protein and calf thymus DNA (ct-DNA) which is in agreement with the docking results. Further biological activities of L1 -L4 have been examined through molecular docking with different proteins which are involved in the propagation of viral or cancer diseases. L1 shows best binding affinity with influenza A virus polymerase PB2 subunit (2VY7) with binding energy -11.42 kcal/mol and inhibition constant 4.23 nm, whereas L2 strongly bind with the hepatitis C virus NS5B polymerase (2WCX) with binding energy -10.47 kcal/mol and inhibition constant 21.06 nm. Ligand L3 binds strongly with TGF-beta receptor 1 (3FAA) and L4 with cancer-related EphA2 protein kinases (1MQB) with binding energy -10.61 kcal/mol, -10.02 kcal/mol and inhibition constant 16.67 nm and 45.41 nm, respectively. The binding energies of L1 -L4 are comparable with binding energies of their proven inhibitors. L1 , L3 and L4 can be considered as both 3FAA and 1MQB dual targeting anticancer agents, while L1 and L3 are both 2VY7 and 2WCX dual targeting antiviral agents. On the other side, L2 and L4 target only one virus related target (2WCX). Furthermore, the geometry optimizations of L1 -L4 were performed via density functional theory (DFT). Moreover, all four ligands (L1 -L4 ) were characterized by NMR, FT-IR, ESI-MS, elemental analysis and their molecular structures were validated by single crystal X-ray diffraction studies.
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Affiliation(s)
- Pratibha Kumari
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Indore, 453552, India
| | - Shagufi Naz Ansari
- Discipline of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, India
| | - Ravi Kumar
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | | | - Shaikh M Mobin
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Indore, 453552, India.,Discipline of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, India.,Metallurgical Engineering and Material Science, Indian Institute of Technology Indore, Simrol, Indore, 453552, India
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Garin AB, Rakarić D, Andrić EK, Kosanović MM, Balić T, Perdih F. Synthesis of monosubstituted dipicolinic acid hydrazide derivative and structural characterization of novel Co(III) and Cr(III) complexes. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.03.059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Molnar M, Periš I, Komar M. Choline Chloride Based Deep Eutectic Solvents as a Tuneable Medium for Synthesis of Coumarinyl 1,2,4-Triazoles: Effect of Solvent Type and Temperature. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900249] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Maja Molnar
- Department of Applied Chemistry and Ecology; Faculty of Food Technology Osijek; F. Kuhača 20 31000 Osijek Croatia
| | - Ivana Periš
- Department of Biology; Josip Juraj Strossmayer University of Osijek; Cara Hadrijana 8/A 31000 Osijek Croatia
| | - Mario Komar
- Department of Applied Chemistry and Ecology; Faculty of Food Technology Osijek; F. Kuhača 20 31000 Osijek Croatia
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Pavić V, Flačer D, Jakovljević M, Molnar M, Jokić S. Assessment of Total Phenolic Content, In Vitro Antioxidant and Antibacterial Activity of Ruta graveolens L. Extracts Obtained by Choline Chloride Based Natural Deep Eutectic Solvents. PLANTS (BASEL, SWITZERLAND) 2019; 8:E69. [PMID: 30889869 PMCID: PMC6473860 DOI: 10.3390/plants8030069] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 03/11/2019] [Accepted: 03/15/2019] [Indexed: 11/16/2022]
Abstract
Rue (R. graveolens) has been an extensively studied medicinal plant due to its rich phytochemicals content, such as furanocoumarins and flavonoids. The aim of this study was to determine the effects of varying extraction conditions on the total phenolic content, the antioxidant and antibacterial property of rue leaves crude extracts using deep eutectic solvents with different water content. These extraction conditions include the temperature and the extraction time. The extract obtained at 30 °C, with 20% water and at 90 min, with 13.3 µg mL-1 concentration, was found to possess the highest total phenolic content (38.24 ± 0.11 mg of GAE g-1 of DM) and the highest antioxidant activity (72.53 ± 0.31%). In this study, the same extract showed the best antibacterial efficiency against all the tested strains, especially gram-negative P. aeruginosa.
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Affiliation(s)
- Valentina Pavić
- Department of Biology, Josip Juraj Strossmayer University of Osijek, Cara Hadrijana 8/A, 31000 Osijek, Croatia.
| | - Dora Flačer
- Department of Biology, Josip Juraj Strossmayer University of Osijek, Cara Hadrijana 8/A, 31000 Osijek, Croatia.
| | - Martina Jakovljević
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 20, 31000 Osijek, Croatia.
| | - Maja Molnar
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 20, 31000 Osijek, Croatia.
| | - Stela Jokić
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 20, 31000 Osijek, Croatia.
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Endophytic Paenibacillus amylolyticus KMCLE06 Extracted Dipicolinic Acid as Antibacterial Agent Derived via Dipicolinic Acid Synthetase Gene. Curr Microbiol 2018; 76:178-186. [PMID: 30498942 DOI: 10.1007/s00284-018-1605-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 11/23/2018] [Indexed: 01/15/2023]
Abstract
Bioactive natural compounds play pivotal roles in drug discovery and the emergence of multi-drug resistance pathogens demands the development of better/new drugs. Paenibacillus amylolyticus KMCLE06 endophytic bacterium isolated from the medicinal plant Coix lachryma-jobi were analyzed for the potential bioactive secondary metabolite compounds and its gene responsible within polyketide synthases (PKS) clusters. Ethyl acetate extraction of P. amylolyticus KMCLE06 showed significant antibacterial activity which was further processed to partial purification and characterization for bioactive compound. The foremost bioactive component in extraction was found to be dipicolinic acid (DPA). The antibacterial activity showed remarkable activity compared to the commercial standard DPA against both gram-positive and gram-negative pathogens. The MIC and MBC concentrations for partially purified extracted DPA ranged from 62.5 to 125 µg/ml and MBC from 208 to 250 µg/ml, respectively. Sequence analysis of gene amplified using degenerative primer, amplified 543 bp DNA region, revealing conserved putative open reading frame for dipicolinic acid synthetase (DpsA) key gene to produce DPA in most endospore forming bacteria. A search in the structural database for DpsA revealed significant homologous match with enoyl reductase one of the PKS type 1 module protein. This emphasizes endophytic P. amylolyticus KMCLE06 bacteria has presence of spoVF operon producing DPA via dipicolinic acid synthetase and lacks the polyketide synthase type 1 module cluster gene in its genome. And the bioactive compound DPA extracted acts as a stable remarkable antibacterial agent which can be potent compound for multi-resistance pathogens.
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Pyrazole nucleus fused tri-substituted imidazole derivatives as antioxidant and antibacterial agents. KARBALA INTERNATIONAL JOURNAL OF MODERN SCIENCE 2018. [DOI: 10.1016/j.kijoms.2018.01.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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