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Wani SS, Qadri H, Shah AH, Dar TA. Dual Antifungal and Antiproliferative Activities of a Novel Protein Fraction from a Medicinally Important Herb Trillium govanianum Wall. ex. D. Don. Appl Biochem Biotechnol 2023:10.1007/s12010-023-04786-2. [PMID: 38038807 DOI: 10.1007/s12010-023-04786-2] [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] [Accepted: 11/07/2023] [Indexed: 12/02/2023]
Abstract
Antimicrobial resistance of microorganisms and the unwanted side effects of chemoradiation therapy in cancer are major issues in healthcare. In recent times, protein-based drugs have emerged as promising candidates due to their high specificity, less side effects, etc. In this context, the rhizome of Trillium govanianum was first explored for biologically active proteins/peptides. For this, three protein fractions namely Aqueous protein fraction (APF), Hexane-Methanol-treated aqueous protein fraction (HMAPF), and Methanol-treated aqueous protein fraction (MAPF) were prepared and evaluated for antimicrobial and antiproliferative activities. In antifungal activity, HMAPF showed the lowest MIC90 values of 1.56 µg/ml against Candida parapsilosis and Candida glabrata and 3.12 µg/ml against Candida albicans and Candida auris. The antifungal activity was further confirmed by a chitinase assay, a growth kinetics and a proteinase inhibitory assay. Surprisingly, none of the three protein fractions exhibited antibacterial activity against Escherichia coli and Staphylococcus aureus. Moreover, APF exhibited potent antiproliferative and antioxidant activities with IC50 values of 18 µg/ml and 227 µg /ml, respectively. For HMAPF, an IC50 value of 70 µg/ml against the MDA-MB-231 cell line was observed. The present results demonstrate that the protein fractions, particularly HMAPF and APF, might serve as potential sources of a dual antifungal and antiproliferative protein-based drug.
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Affiliation(s)
- Snober S Wani
- Department of Clinical Biochemistry, University of Kashmir, Srinagar, Jammu and Kashmir, India, 190006
| | - Hafsa Qadri
- Department of Bioresources, University of Kashmir, Srinagar, Jammu and Kashmir, India, 190006
| | - Abdul H Shah
- Department of Bioresources, University of Kashmir, Srinagar, Jammu and Kashmir, India, 190006.
| | - Tanveer A Dar
- Department of Clinical Biochemistry, University of Kashmir, Srinagar, Jammu and Kashmir, India, 190006.
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2
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Yuan S, Yan R, Lin B, Li R, Ye X. Improving thermostability of Bacillus amyloliquefaciens alpha-amylase by multipoint mutations. Biochem Biophys Res Commun 2023; 653:69-75. [PMID: 36857902 DOI: 10.1016/j.bbrc.2023.02.064] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 02/22/2023] [Accepted: 02/23/2023] [Indexed: 02/26/2023]
Abstract
The medium-temperature alpha-amylase of Bacillus amyloliquefaciens is widely used in the food and washing process. Enhancing the thermostability of alpha-amylases and investigating the mechanism of stability are important for enzyme industry development. The optimal temperature and pH of the wild-type BAA and mutant MuBAA (D28E/V118A/S187D/K370 N) were all 60 °C and 6.0, respectively. The mutant MuBAA showed better thermostability at 50 °C and 60 °C, with a specific activity of 206.61 U/mg, which was 99.1% greater than that of the wild-type. By analyzing predicted structures, the improving thermostability of the mutant MuBAA was mainly related to enhanced stabilization of a loop region in domain B via more calcium-binding sites and intramolecular interactions around Asp187. Furthermore, additional intramolecular interactions around sites 28 and 370 in domain A were also beneficial for improving thermostability. Additionally, the decrease of steric hindrance at the active cavity increased the specific activity of the mutant MuBAA. Improving the thermostability of BAA has theoretical reference values for the modification of alpha-amylases.
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Affiliation(s)
- Susu Yuan
- National Engineering Laboratory for High-efficient Enzyme Expression, Fuzhou, Fujian, China; The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fuzhou, Fujian, China; College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian, China
| | - Renxiang Yan
- National Engineering Laboratory for High-efficient Enzyme Expression, Fuzhou, Fujian, China; The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fuzhou, Fujian, China; College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian, China
| | - Biyu Lin
- National Engineering Laboratory for High-efficient Enzyme Expression, Fuzhou, Fujian, China; The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fuzhou, Fujian, China; College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian, China
| | - Renkuan Li
- National Engineering Laboratory for High-efficient Enzyme Expression, Fuzhou, Fujian, China; The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fuzhou, Fujian, China; College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian, China
| | - Xiuyun Ye
- National Engineering Laboratory for High-efficient Enzyme Expression, Fuzhou, Fujian, China; The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fuzhou, Fujian, China; College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian, China.
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3
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Sabo J, Farkasová S, Droppa M, Žiarovská J, Kačániová M. Molecular Fingerprinting and Microbiological Characterisation of Selected Vitis vinifera L. Varieties. PLANTS (BASEL, SWITZERLAND) 2022; 11:3375. [PMID: 36501415 PMCID: PMC9736876 DOI: 10.3390/plants11233375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/01/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
The aim of the study was to analyse selected aspects of the natural variability of selected varieties of Vitis vinifera. Grapevine is one of the most popular and desirable crops in the world due to the great tradition of wine production, but grape extracts also have a wide range of pharmaceutical effects on the human body. It is important to identify different varieties for the conservation of genetic resources, but also for commercial and cultivation purposes. The variability of conserved DNA-derived polymorphism profiles, as well as microbial characteristics, were analysed in this study. Six different varieties of Vitis vinifera L. were used in the study: Cabernet Savignon, Chardonney, Welschriesling, Weisser Riesling, Gewurztramines and Gruner Veltliner. Genetic polymorphism was analysed by CDDP markers for WRKY genes. Polymorphic amplicon profiles were generated by all primer combinations used in the study. Gruner Veltliner and Welschriesling were the most similar, with a similarity value at 0.778. Microbiological quality of grape and antimicrobial activity against Gram-positive and Gram-negative bacteria and yeasts were analysed further. The plate diluting method for microbial quality and the disc diffusion method for antimicrobial activity were evaluated. The number of total count of bacteria ranged between 3.12 in Cabernet Sauvignon to 3.62 log cfu/g in Grűner Veltliner. The best antimicrobial activity showed Gewurztramines against Salmonella enterica, Yersinia enterocolitica, Pseudomonas aeroginosa, Staphylococcus aureus, Listeria monocytogenes, Candida albicans, Candida krusei, and Candida tropicalis. The best antimicrobial activity was found against Enterococcus faecalis in variety Weisser Riesling.
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Affiliation(s)
- Jozef Sabo
- Institute of Horticulture, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture, Tr. A. Hlinku 2, 94976 Nitra, Slovakia
| | - Silvia Farkasová
- Institute of Plant and Environmental Sciences, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 94976 Nitra, Slovakia
| | - Michal Droppa
- Institute of Plant and Environmental Sciences, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 94976 Nitra, Slovakia
| | - Jana Žiarovská
- Institute of Plant and Environmental Sciences, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 94976 Nitra, Slovakia
| | - Miroslava Kačániová
- Institute of Horticulture, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture, Tr. A. Hlinku 2, 94976 Nitra, Slovakia
- Institute of Plant and Environmental Sciences, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 94976 Nitra, Slovakia
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4
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The Updated Review on Plant Peptides and Their Applications in Human Health. Int J Pept Res Ther 2022; 28:135. [PMID: 35911180 PMCID: PMC9326430 DOI: 10.1007/s10989-022-10437-7] [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] [Accepted: 06/20/2022] [Indexed: 11/30/2022]
Abstract
Biologically active plant peptides, consisting of secondary metabolites, are compounds (amino acids) utilized by plants in their defense arsenal. Enzymatic processes and metabolic pathways secrete these plant peptides. They are also known for their medicinal value and have been incorporated in therapeutics of major human diseases. Nevertheless, its limitations (low bioavailability, high cytotoxicity, poor absorption, low abundance, improper metabolism, etc.) have demanded a need to explore further and discover other new plant compounds that overcome these limitations. Keeping this in mind, therapeutic plant proteins can be excellent remedial substitutes for bodily affliction. A multitude of these peptides demonstrates anti-carcinogenic, anti-microbial, anti-HIV, and neuro-regulating properties. This article's main aim is to list out and report the status of various therapeutic plant peptides and their prospective status as peptide-based drugs for multiple diseases (infectious and non-infectious). The feasibility of these compounds in the imminent future has also been discussed.
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5
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Mingrou L, Guo S, Ho C, Bai N. Review on chemical compositions and biological activities of peanut (
Arachis hypogeae
L.). J Food Biochem 2022; 46:e14119. [DOI: 10.1111/jfbc.14119] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 01/04/2022] [Accepted: 01/29/2022] [Indexed: 12/27/2022]
Affiliation(s)
- Li Mingrou
- College of Food Science and Technology Northwest University Xi’an China
| | - Sen Guo
- College of Food Science and Technology Northwest University Xi’an China
| | - Chi‐Tang Ho
- Department of Food Science Rutgers University New Brunswick New Jersey USA
| | - Naisheng Bai
- College of Food Science and Technology Northwest University Xi’an China
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6
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Wani SS, Dar PA, Zargar SM, Dar TA. Therapeutic Potential of Medicinal Plant Proteins: Present Status and Future Perspectives. Curr Protein Pept Sci 2021; 21:443-487. [PMID: 31746291 DOI: 10.2174/1389203720666191119095624] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 10/10/2019] [Accepted: 10/27/2019] [Indexed: 02/07/2023]
Abstract
Biologically active molecules obtained from plant sources, mostly including secondary metabolites, have been considered to be of immense value with respect to the treatment of various human diseases. However, some inevitable limitations associated with these secondary metabolites like high cytotoxicity, low bioavailability, poor absorption, low abundance, improper metabolism, etc., have forced the scientific community to explore medicinal plants for alternate biologically active molecules. In this context, therapeutically active proteins/peptides from medicinal plants have been promoted as a promising therapeutic intervention for various human diseases. A large number of proteins isolated from the medicinal plants have been shown to exhibit anti-microbial, anti-oxidant, anti-HIV, anticancerous, ribosome-inactivating and neuro-modulatory activities. Moreover, with advanced technological developments in the medicinal plant research, medicinal plant proteins such as Bowman-Birk protease inhibitor and Mistletoe Lectin-I are presently under clinical trials against prostate cancer, oral carcinomas and malignant melanoma. Despite these developments and proteins being potential drug candidates, to date, not a single systematic review article has documented the therapeutical potential of the available biologically active medicinal plant proteome. The present article was therefore designed to describe the current status of the therapeutically active medicinal plant proteins/peptides vis-à-vis their potential as future protein-based drugs for various human diseases. Future insights in this direction have also been highlighted.
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Affiliation(s)
- Snober Shabeer Wani
- Department of Clinical Biochemistry, University of Kashmir, Srinagar-190006, Jammu and Kashmir, India
| | - Parvaiz A Dar
- Department of Clinical Biochemistry, University of Kashmir, Srinagar-190006, Jammu and Kashmir, India
| | - Sajad M Zargar
- Division of Plant Biotechnology, S. K. University of Agricultural Sciences and Technology of Srinagar, Shalimar-190025, Srinagar, Jammu and Kashmir, India
| | - Tanveer A Dar
- Department of Clinical Biochemistry, University of Kashmir, Srinagar-190006, Jammu and Kashmir, India
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7
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Senakoon W, Nuchadomrong S, Chiou RYY, Senawong G, Jogloy S, Songsri P, Patanothai A. Identification of peanut seed prolamins with an antifungal role by 2D-GE and drought treatment. Biosci Biotechnol Biochem 2015; 79:1771-8. [PMID: 26086399 DOI: 10.1080/09168451.2015.1056508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
This work revealed peanut seed prolamins likely displaying a defensive role besides the known nitrogen storage. Drought stress and proteomic approaches were used in varieties of peanuts to explore the prolamin member in association with a test against Aspergillus flavus spore germination. The stress effect was showed by aerial biomass, leaf content of malondialdehyde, and seed contamination by A. flavus. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis profiles were not informative for the antifungal polypeptides. From two-dimensional gel electrophoresis, the suspected polypeptides were those with pI 5.45-5.75 and sizes of 22.0-30.5 kDa specifically in Spanish-type peanuts. Regarding to the drought effect in most of these peanuts, the spot peak volume analysis deduced three novel prolamin-related antifungal polypeptides at pI 5.75-5.8 with 30.5, 27.5-28.5, and 22.0-22.5 kDa, which was confirmed after isoelectric purification at pH 5.60. The data could not yet conclude their correlation with resistance to drought and to seed infection by A. flavus.
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Affiliation(s)
- Waraluk Senakoon
- a Faculty of Science, Department of Biochemistry , Khon Kaen University , Khon Kaen , Thailand
| | - Suporn Nuchadomrong
- a Faculty of Science, Department of Biochemistry , Khon Kaen University , Khon Kaen , Thailand
| | - Robin Y-Y Chiou
- b Department of Food Science, College of Life Sciences , National Chiayi University , Chiayi , Taiwan, ROC
| | - Gulsiri Senawong
- a Faculty of Science, Department of Biochemistry , Khon Kaen University , Khon Kaen , Thailand
| | - Sanun Jogloy
- c Faculty of Agriculture, Department of Plant Science and Agricultural Resources , Khon Kaen University , Khon Kaen , Thailand
| | - Patcharin Songsri
- c Faculty of Agriculture, Department of Plant Science and Agricultural Resources , Khon Kaen University , Khon Kaen , Thailand
| | - Aran Patanothai
- c Faculty of Agriculture, Department of Plant Science and Agricultural Resources , Khon Kaen University , Khon Kaen , Thailand
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8
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Wang S, Shao B, Cai X, Rao P, Deng Z, Xie M. Preparation and Characterization of a Trypsin Inhibitor from G
lycine max (
L
.) merr. J FOOD PROCESS PRES 2013. [DOI: 10.1111/jfpp.12182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Shaoyun Wang
- State Key Laboratory of Food Science and Technology; Nanchang University; Nanchang 330047 China
- Department of Food Science; Fuzhou University; Fuzhou China
| | - Biao Shao
- Nantong Products Quality Supervision and Inspection Institute; Nantong China
| | - Xixi Cai
- Department of Food Science; Fuzhou University; Fuzhou China
| | - Pingfan Rao
- Department of Food Science; Fuzhou University; Fuzhou China
| | - Zeyuan Deng
- State Key Laboratory of Food Science and Technology; Nanchang University; Nanchang 330047 China
| | - Mingyong Xie
- State Key Laboratory of Food Science and Technology; Nanchang University; Nanchang 330047 China
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9
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Hong Y, Cai X, Shao B, Hong J, Wang S, Rao P. Isolation of a thermostable trypsin inhibitor with exploitable potential. Eur Food Res Technol 2013; 237:457-465. [PMID: 32214902 PMCID: PMC7080008 DOI: 10.1007/s00217-013-2013-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2012] [Revised: 04/20/2013] [Accepted: 04/28/2013] [Indexed: 11/20/2022]
Abstract
A novel trypsin inhibitor with considerable thermal and pH stability, designated Glytine, was isolated from seeds of the Chinese black soybean Glycine max (L.) Merr. The purification procedure involved ammonium sulfate precipitation, ion-exchange chromatography on CM-Sephadex C-50, gel filtration chromatography on Sephacryl S-200HR, and gel filtration chromatography on POROS HS-20. The 20 N-terminal amino acid sequences were determined to be DEYSKPCCDLCMCTRRCPPQ, demonstrating close homology with the sequences of leguminous trypsin inhibitors. The molecular mass and isoelectric point of the inhibitor were estimated by SDS-PAGE and isoelectric focusing to be 19.9 kDa and 6.2, respectively. Trypsin could be completely inhibited by Glytine when the weight ratio was 1.5. The inhibitory activity of Glytine was unaffected by exposure to temperatures up to 100 °C, or within the pH range 2-12. Besides trypsin-chymotrypsin inhibition activity, Glytine demonstrated other biological activities including antiproliferative activity against tumor cells including human liver hepatoma cells Bel-7402 and neuroblastoma cells SHSY5Y. In addition, the inhibitor showed antifungal activity against Pythium aphanidermatum, Fusarium oxysporum, Alternaria alternata (Fr.) Keiss, Fusarium solani, and Botrytis cinerea. This study extended research on leguminous trypsin-chymotrypsin inhibitor and suggested exploitable potential.
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Affiliation(s)
- Yongxiang Hong
- 1College of Bioscience and Biotechnology, Fuzhou University, Fuzhou, 350108 People's Republic of China
| | - Xixi Cai
- 1College of Bioscience and Biotechnology, Fuzhou University, Fuzhou, 350108 People's Republic of China
| | - Biao Shao
- Nantong Products Quality Supervision and Inspection Institute, Nantong, 226011 People's Republic of China
| | - Jing Hong
- 1College of Bioscience and Biotechnology, Fuzhou University, Fuzhou, 350108 People's Republic of China
| | - Shaoyun Wang
- 1College of Bioscience and Biotechnology, Fuzhou University, Fuzhou, 350108 People's Republic of China
| | - Pingfan Rao
- 1College of Bioscience and Biotechnology, Fuzhou University, Fuzhou, 350108 People's Republic of China
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10
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Duan XH, Jiang R, Wen YJ, Bin JH. Some 2S albumin from peanut seeds exhibits inhibitory activity against Aspergillus flavus. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2013; 66:84-90. [PMID: 23500710 DOI: 10.1016/j.plaphy.2013.01.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Accepted: 01/25/2013] [Indexed: 06/01/2023]
Abstract
A crude 2S albumin fraction was separated from peanut (Arachis hypogaea L.) cotyledons. Untreated 2S albumin had little inhibitory activity against trypsin, spore germination, or hyphal growth of Aspergillus flavus. However, following treatment of 2S albumin with SDS, increased inhibitory activity was demonstrated. We further purified 2S albumin using Sephadex G-100 and DEAE cellulose (DE-32) chromatography. HPLC analysis showed that the partially pure 2S albumin consisted of two polypeptides, whereas SDS-PAGE analyzes exhibited six polypeptides. One of the polypeptides, 2S-1, was found to contain the same molecular weight and enzymatic properties as the peanut protease inhibitor (PI); however, the N-terminal amino acid sequence of 2S-1 differed from that of PI. An NCBI database search revealed that the 2S-1 polypeptide is homologous to the pathogenesis-related proteins from soybean, cowpea, chickpea, and Lupinus luteus. We hypothesize that the 2S-1 polypeptide might represent a novel antifungal protein.
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Affiliation(s)
- Xiao Hua Duan
- College of Life Sciences, South China Normal University, Guangdong Key Laboratory of Biotechnology for Plant Development, Guangzhou 510631, PR China
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11
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12
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Wang S, Ye X, Chen J, Rao P. A novel chitinase isolated from Vicia faba and its antifungal activity. Food Res Int 2012. [DOI: 10.1016/j.foodres.2011.10.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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13
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WANG SHAOYUN, SHAO BIAO, RAO PINGFAN, DENG ZEYUAN, XIE MINGYONG. LIMLIN, A NOVEL LEGUMINOUS PEROXIDASE WITH ANTIFUNGAL ACTIVITY FROM PHASEOLUS LIMENSIS. J Food Biochem 2011. [DOI: 10.1111/j.1745-4514.2010.00445.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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14
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Lopes RM, Agostini-Costa TDS, Gimenes MA, Silveira D. Chemical composition and biological activities of Arachis species. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:4321-4330. [PMID: 21425852 DOI: 10.1021/jf104663z] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Arachis hypogaea , known as the peanut, is native to South America. Peanut contains several active components including flavonoids, phenolic acids, phytosterols, alkaloids, and stilbenes. Some therapeutic effects have been reported for peanut seed extracts, such as antioxidative, antibacterial, antifungal, and anti-inflammatory activities. This paper aims to give an overview of the chemical composition, focusing on secondary metabolites, and of the biological activity of A. hypogaea, to stimulate new studies about species of the Arachis genus.
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Affiliation(s)
- Renata Miranda Lopes
- Faculdade de Ciências da Saúde, Universidade de Brasília , Campus Universitário Darcy Ribeiro, Asa Norte, Brasília DF, Brazil
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15
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Wang S, Rao P. A leguminous trypsin-chymotrypsin inhibitor Limenin with antifungal activity from Phaseolus limensis. Eur Food Res Technol 2010; 231:331-338. [PMID: 32214901 PMCID: PMC7079880 DOI: 10.1007/s00217-010-1285-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2010] [Revised: 03/28/2010] [Accepted: 04/12/2010] [Indexed: 12/03/2022]
Abstract
A trypsin-chymotrypsin inhibitor, designated Limenin, with both antifungal and antibacterial activity, and exhibiting a molecular mass of 18.0 kDa in SDS-polyacrylamide gel electrophoresis, was isolated from the large lima bean (Phaseolus limensis) legumes by a combination of extraction, ammonium sulfate precipitation, ion exchange chromatography on SP-Toyopearl and high performance liquid chromatography (HPLC) on Mono S. The isoelectric point was estimated to be 7.6 by isoelectric focusing. The 15 N-terminal amino acid sequences were determined to be DFVIDNEGNPLENGG, demonstrating some resemblance to those other protease inhibitors and inhibitor precursors from leguminous plants. It exerted potent antifungal action toward Botrytis cinerea, Alternaria alternata(Fr.) Keissl, and Pythium aphanidermatum. It showed antiproliferative activity toward tumor cells including human liver hepatoma cells Bel-7402 and neuroblastoma cells SHSY5Y. However, it had no effect on bacteria Staphylococcus aureus and Salmonella.
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Affiliation(s)
- Shaoyun Wang
- Department of Food Science, Fuzhou University, Fuzhou, 350002 China
| | - Pingfan Rao
- Department of Food Science, Fuzhou University, Fuzhou, 350002 China
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16
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Wang S, Shao B, Fu H, Rao P. Isolation of a thermostable legume chitinase and study on the antifungal activity. Appl Microbiol Biotechnol 2009; 85:313-21. [PMID: 19547968 DOI: 10.1007/s00253-009-2074-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2009] [Revised: 05/29/2009] [Accepted: 06/02/2009] [Indexed: 11/28/2022]
Abstract
Chitinases are listed as one class of pathogenesis-related proteins, and they have become a popular research topic because of their resistance to plant-pathogenic diseases. A chitinase with antifungal activity was isolated from the Canadian cranberry beans (Phaseolus vulgaris). The procedure included extraction, ammonium sulfate precipitation, affinity chromatography on Affi-gel blue gel, CM-Sephadex C-50, and Sephadex G-75. There was an almost 108-fold increase in specific activity of the purified chitinase compared with that of the crude extract. The enzyme exhibited a molecular mass of 30.6 kDa in sodium dodecyl sulfate-polyacrylamide gel electrophoresis both under reducing and non-reducing conditions, indicating that it was a monomeric protein. The pI was determined to be 7.6 by isoelectric-focusing electrophoresis. The optimum pH and the optimum temperature for activity towards N-acetyl-glucosamine was 5.4 and 40-55 degrees C, respectively. It exerted a potent inhibitory action toward fungal species including Botrytis cinerea, Physalospora piricola, Fusarium oxysporum, and Pythium aphanidermatum. The chitinase was thermostable up to 58 degrees C in both enzymatic reaction and antifungal activity. The present findings demonstrated a thermostable chitinase from cranberry beans with potentially exploitable significance.
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Affiliation(s)
- Shaoyun Wang
- College of Bioscience & Biotechnology, Fuzhou University, Fuzhou 350002, People's Republic of China.
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17
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Wang S, Gong Y, Zhou J. Chromatographic Isolation and Characterization of a Novel Peroxidase from Large Lima Legumes. J Food Sci 2009; 74:C193-8. [DOI: 10.1111/j.1750-3841.2008.01018.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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Wang S, Rao P, Ye X. Isolation and biochemical characterization of a novel leguminous defense peptide with antifungal and antiproliferative potency. Appl Microbiol Biotechnol 2008; 82:79-86. [PMID: 18841359 DOI: 10.1007/s00253-008-1729-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2008] [Revised: 09/16/2008] [Accepted: 09/21/2008] [Indexed: 10/21/2022]
Abstract
Leguminous plants have formed a popular subject of research owing to the abundance of proteins and peptides with important biological activities that they produce. The antifungal proteins and peptides have been purified from a number of leguminous species. However, research continues to discover novel antifungal plant-produced peptides and proteins are being needed, specially those novel ones with both antifungal activity and other significant bioactivities. The objective of this study was to isolate a novel peptide from Phaseolus limensis. A 6.8 kDa peptide designated Limyin, with both antifungal and antiproliferative activity, was isolated from the large lima bean (P. limensis) legumes. The isolation procedure consisted of extraction, precipitation, affinity chromatography on Affi-gel blue gel, ion chromatography on SP-Toyopearl, and gel filtration on Superdex 75. Its N-terminal sequence was determined to be KTCENLATYYRGPCF, showing high homology to defensin and defensin precursors from plants. It potently suppressed mycelial growth in Alternaria alternata, Fusarium solani, and Botrytis cinerea. Its antifungal activity was stable up to 80 degrees C. It showed antiproliferative activity towards tumor cells including human liver hepatoma cells Bel-7402 and neuroblastoma cells SHSY5Y. However, it had no effect on bacteria Staphylococcus aureus and Salmonella. The present findings make a significant addition of the research on leguminous plants.
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Affiliation(s)
- Shaoyun Wang
- College of Bioscience & Biotechnology, Fuzhou University, Fuzhou, 350002, China.
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Wang S, Zhou J, Shao B, Lu Y, Rao P. A Thermostable Chitinase with Chitin-Binding Activity fromPhaseolus limensis. J Food Sci 2008; 73:C452-7. [DOI: 10.1111/j.1750-3841.2008.00800.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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