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Sarkar A, Bhaskara Rao KV. Unraveling anticancer potential of a novel serine protease inhibitor from marine yeast Candida parapsilosis ABS1 against colorectal and breast cancer cells. World J Microbiol Biotechnol 2023; 39:225. [PMID: 37296286 DOI: 10.1007/s11274-023-03670-9] [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: 03/24/2023] [Accepted: 06/01/2023] [Indexed: 06/12/2023]
Abstract
The study was planned to isolate a serine protease inhibitor compound with anticancer potential against colorectal and breast cancer cells from marine yeast. Protease enzymes play a crucial role in the mechanism of life-threatening diseases like cancer, malaria and AIDS. Hence, blocking these enzymes with potential inhibitors can be an efficient approach in drug therapy for these diseases. A total of 12 marine yeast isolates, recovered from mangrove swamps of Sundarbans, India, showed inhibition activity against trypsin. The yeast isolate ABS1 showed highest inhibition activity (89%). The optimum conditions for protease inhibitor production were found to be glucose, ammonium phosphate, pH 7.0, 30 °C and 2 M NaCl. The PI protein from yeast isolate ABS1 was purified using ethyl acetate extraction and anion exchange chromatography. The purified protein was characterized using denaturing SDS-PAGE, Liquid Chromatography Electrospray Ionization Mass Spectrometry (LC-ESI-MS), Reverse Phase High Pressure Liquid Chromatography (RP-HPLC) and Fourier Transform Infra-red Spectroscopy (FTIR) analysis. The intact molecular weight of the PI protein was determined to be 25.584 kDa. The PI protein was further studied for in vitro anticancer activities. The IC50 value for MTT cell proliferation assay was found to be 43 µg/ml against colorectal cancer HCT15 cells and 48 µg/ml against breast cancer MCF7 cells. Hoechst staining, DAPI staining and DNA fragmentation assay were performed to check the apoptotic cells. The marine yeast was identified as Candida parapsilosis ABS1 (Accession No. MH782231) using 18s rRNA sequencing.
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Affiliation(s)
- Anwesha Sarkar
- Marine Biotechnology Laboratory, Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - K V Bhaskara Rao
- Marine Biotechnology Laboratory, Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, India.
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Kamarudheen N, Khaparde A, Gopal S, Rao KB. Unraveling a natural protease inhibitor from marine Streptomyces griseoincarnatus HK12 active against Chikungunya virus. Microbiol Res 2021; 252:126858. [PMID: 34509708 DOI: 10.1016/j.micres.2021.126858] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 07/04/2021] [Accepted: 08/29/2021] [Indexed: 11/16/2022]
Abstract
Proteases play an indispensable role in the life cycles of several life-threatening organisms such as the ones causing malaria, cancer and AIDS. A targeted blockade of these enzymes could be an efficient approach for drug modeling against these causative agents. Our study was directed towards the extraction and characterization of a protease inhibitor having activity against Chikungunya virus (CHIKV). A protein-based protease inhibitor (PI) in Streptomyces griseoincarnatus HK12 with anti-viral activity against CHIKV was revealed when screened against two major proteases, papain and trypsin. The PI was efficiently extracted at 60 % ammonium sulfate saturation and purified by ion-exchange chromatography (CM-Sepharose) at 300 mM NaCl elution followed by SDS-PAGE (10 %). The protein was characterized by denaturing SDS-PAGE, reverse zymography, and MALDI-TOF peptide mass fingerprinting. The protein-based PI was studied to have a high molecular weight of 66-70 kDA. The PI was tested to supress the supress cytopathic effects (CPE) exerted by the clinically isolated virus in BHK21 cells. This was used as a measure to determine the antiviral activity. The PI exerted significant effects with an effective concentration calculated as EC50 11.21 μg/mL. The protein was found to be reported as the first of its kind which also stands out to be the first a natural protease inhibitor against the treatment of the chikungunya virus.
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Affiliation(s)
- Neethu Kamarudheen
- Marine Biotechnology Laboratory, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Ashish Khaparde
- Centre for Bio-separation Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Sai Gopal
- Department of Virology, Sri Venkateswara University, Tirupati, Andhra, India
| | - Kv Bhaskara Rao
- Marine Biotechnology Laboratory, Vellore Institute of Technology, Vellore, Tamil Nadu, India.
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Capraro J, Benedetti SD, Heinzl GC, Scarafoni A, Magni C. Bioactivities of Pseudocereal Fractionated Seed Proteins and Derived Peptides Relevant for Maintaining Human Well-Being. Int J Mol Sci 2021; 22:3543. [PMID: 33805525 PMCID: PMC8036814 DOI: 10.3390/ijms22073543] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/21/2021] [Accepted: 03/24/2021] [Indexed: 12/17/2022] Open
Abstract
Food proteins and peptides are able to exert a variety of well-known bioactivities, some of which are related to well-being and disease prevention in humans and animals. Currently, an active trend in research focuses on chronic inflammation and oxidative stress, delineating their major pathogenetic role in age-related diseases and in some forms of cancer. The present study aims to investigate the potential effects of pseudocereal proteins and their derived peptides on chronic inflammation and oxidative stress. After purification and attribution to protein classes according to classic Osborne's classification, the immune-modulating, antioxidant, and trypsin inhibitor activities of proteins from quinoa (Chenopodium quinoa Willd.), amaranth (Amaranthus retroflexus L.), and buckwheat (Fagopyrum esculentum Moench) seeds have been assessed in vitro. The peptides generated by simulated gastro-intestinal digestion of each fraction have been also investigated for the selected bioactivities. None of the proteins or peptides elicited inflammation in Caco-2 cells; furthermore, all protein fractions showed different degrees of protection of cells from IL-1β-induced inflammation. Immune-modulating and antioxidant activities were, in general, higher for the albumin fraction. Overall, seed proteins can express these bioactivities mainly after hydrolysis. On the contrary, higher trypsin inhibitor activity was expressed by globulins in their intact form. These findings lay the foundations for the exploitation of these pseudocereal seeds as source of anti-inflammatory molecules.
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Affiliation(s)
- Jessica Capraro
- Department of Food, Environmental and Nutritional Sciences, Università degli Studi di Milano, 20133 Milano, Italy
| | - Stefano De Benedetti
- Department of Food, Environmental and Nutritional Sciences, Università degli Studi di Milano, 20133 Milano, Italy
| | - Giuditta Carlotta Heinzl
- Department of Food, Environmental and Nutritional Sciences, Università degli Studi di Milano, 20133 Milano, Italy
| | - Alessio Scarafoni
- Department of Food, Environmental and Nutritional Sciences, Università degli Studi di Milano, 20133 Milano, Italy
| | - Chiara Magni
- Department of Food, Environmental and Nutritional Sciences, Università degli Studi di Milano, 20133 Milano, Italy
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In vitro screening of peptidase inhibitory activity in some plants of North India. Heliyon 2020; 6:e05203. [PMID: 33088962 PMCID: PMC7566102 DOI: 10.1016/j.heliyon.2020.e05203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 05/05/2020] [Accepted: 10/07/2020] [Indexed: 11/21/2022] Open
Abstract
In the present study, trypsin and chymotrypsin inhibitory activity of some plants of different families was evaluated. A total of 55 plants were screened, out of which six showed the maximum trypsin inhibitory activity namely Acacia concinna, Caesalpinia bonducella, Lathyrus sativus, Mucuna pruriens, Psoralea corylifolia and Sapindus mukorossi. Results suggested that the plants showing trypsin inhibitory activity (TIA) also have chymotrypsin inhibitory activity (CIA). Both trypsin and chymotrypsin inhibitory activities were high in seeds compared to leaves followed by flowers. It was also observed that TIA was maximally present in Sapindaceae family whereas CIA was maximum in fabaceae family followed by others.
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Samiksha, Singh D, Kesavan AK, Sohal SK. Purification of a trypsin inhibitor from Psoralea corylifolia seeds and its influence on developmental physiology of Bactrocera cucurbitae. Int J Biol Macromol 2019; 139:1141-1150. [DOI: 10.1016/j.ijbiomac.2019.08.063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 08/07/2019] [Accepted: 08/07/2019] [Indexed: 10/26/2022]
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Srikanth S, Chen Z. Plant Protease Inhibitors in Therapeutics-Focus on Cancer Therapy. Front Pharmacol 2016; 7:470. [PMID: 28008315 PMCID: PMC5143346 DOI: 10.3389/fphar.2016.00470] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 11/18/2016] [Indexed: 12/28/2022] Open
Abstract
Plants are known to have many secondary metabolites and phytochemical compounds which are highly explored at biochemical and molecular genetics level and exploited enormously in the human health care sector. However, there are other less explored small molecular weight proteins, which inhibit proteases/proteinases. Plants are good sources of protease inhibitors (PIs) which protect them against diseases, insects, pests, and herbivores. In the past, proteinaceous PIs were considered primarily as protein-degrading enzymes. Nevertheless, this view has significantly changed and PIs are now treated as very important signaling molecules in many biological activities such as inflammation, apoptosis, blood clotting and hormone processing. In recent years, PIs have been examined extensively as therapeutic agents, primarily to deal with various human cancers. Interestingly, many plant-based PIs are also found to be effective against cardiovascular diseases, osteoporosis, inflammatory diseases and neurological disorders. Several plant PIs are under further evaluation in in vitro clinical trials. Among all types of PIs, Bowman-Birk inhibitors (BBI) have been studied extensively in the treatment of many diseases, especially in the field of cancer prevention. So far, crops such as beans, potatoes, barley, squash, millet, wheat, buckwheat, groundnut, chickpea, pigeonpea, corn, and pineapple have been identified as good sources of PIs. The PI content of such foods has a significant influence on human health disorders, particularly in the regions where people mostly depend on these kind of foods. These natural PIs vary in concentration, protease specificity, heat stability, and sometimes several PIs may be present in the same species or tissue. However, it is important to carry out individual studies to identify the potential effects of each PI on human health. PIs in plants make them incredible sources to determine novel PIs with specific pharmacological and therapeutic effects due to their peculiarity and superabundance.
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Affiliation(s)
| | - Zhong Chen
- Natural Sciences and Science Education, National Institute of Education, Nanyang Technological UniversitySingapore, Singapore
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Pesoti AR, Oliveira BMD, Oliveira ACD, Pompeu DG, Gonçalves DB, Marangoni S, Silva JAD, Granjeiro PA. Extraction, purification and characterization of inhibitor of trypsin from Chenopodium quinoa seeds. FOOD SCIENCE AND TECHNOLOGY 2015. [DOI: 10.1590/1678-457x.6655] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Fractionation and Characterization of Protease Inhibitors from Fish Eggs Based on Protein Solubility. ACTA ACUST UNITED AC 2013. [DOI: 10.5657/kfas.2013.0119] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Rastogi A, Shukla S. Amaranth: A New Millennium Crop of Nutraceutical Values. Crit Rev Food Sci Nutr 2013; 53:109-25. [DOI: 10.1080/10408398.2010.517876] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Magee PJ, Owusu-Apenten R, McCann MJ, Gill CI, Rowland IR. Chickpea (Cicer arietinum) and Other Plant-Derived Protease Inhibitor Concentrates Inhibit Breast and Prostate Cancer Cell Proliferation In Vitro. Nutr Cancer 2012; 64:741-8. [DOI: 10.1080/01635581.2012.688914] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Bijina B, Chellappan S, Basheer SM, Elyas K, Bahkali AH, Chandrasekaran M. Protease inhibitor from Moringa oleifera leaves: Isolation, purification, and characterization. Process Biochem 2011. [DOI: 10.1016/j.procbio.2011.09.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Bijina B, Chellappan S, Krishna JG, Basheer SM, Elyas K, Bahkali AH, Chandrasekaran M. Protease inhibitor from Moringa oleifera with potential for use as therapeutic drug and as seafood preservative. Saudi J Biol Sci 2011; 18:273-81. [PMID: 23961135 PMCID: PMC3730569 DOI: 10.1016/j.sjbs.2011.04.002] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 04/04/2011] [Accepted: 04/11/2011] [Indexed: 12/01/2022] Open
Abstract
Protease inhibitors are well known to have several applications in medicine and biotechnology. Several plant sources are known to return potential protease inhibitors. In this study plants belonging to different families of Leguminosae, Malvaceae, Rutaceae, Graminae and Moringaceae were screened for the protease inhibitor. Among them Moringa oleifera, belonging to the family Moringaceae, recorded high level of protease inhibitor activity after ammonium sulfate fractionation. M. oleifera, which grows throughout most of the tropics and having several industrial and medicinal uses, was selected as a source of protease inhibitor since so far no reports were made on isolation of the protease inhibitor. Among the different parts of M. oleifera tested, the crude extract isolated from the mature leaves and seeds showed the highest level of inhibition against trypsin. Among the various extraction media evaluated, the crude extract prepared in phosphate buffer showed maximum recovery of the protease inhibitor. The protease inhibitor recorded high inhibitory activity toward the serine proteases thrombin, elastase, chymotrypsin and the cysteine proteases cathepsin B and papain which have more importance in pharmaceutical industry. The protease inhibitor also showed complete inhibition of activities of the commercially available proteases of Bacillus licheniformis and Aspergillus oryzae. However, inhibitory activities toward subtilisin, esperase, pronase E and proteinase K were negligible. Further, it was found that the protease inhibitor could prevent proteolysis in a commercially valuable shrimp Penaeus monodon during storage indicating the scope for its application as a seafood preservative. This is the first report on isolation of a protease inhibitor from M. oleifera.
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Affiliation(s)
- B. Bijina
- Microbial Technology Laboratory, Department of Biotechnology, Cochin University of Science and Technology, Cochin 682022, India
| | - Sreeja Chellappan
- Microbial Technology Laboratory, Department of Biotechnology, Cochin University of Science and Technology, Cochin 682022, India
| | - Jissa G. Krishna
- Microbial Technology Laboratory, Department of Biotechnology, Cochin University of Science and Technology, Cochin 682022, India
| | - Soorej M. Basheer
- Microbial Technology Laboratory, Department of Biotechnology, Cochin University of Science and Technology, Cochin 682022, India
| | - K.K. Elyas
- Microbial Technology Laboratory, Department of Biotechnology, Cochin University of Science and Technology, Cochin 682022, India
- Department of Biotechnology, University of Calicut, Calicut University P.O., Kerala, India
| | - Ali H. Bahkali
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - M. Chandrasekaran
- Microbial Technology Laboratory, Department of Biotechnology, Cochin University of Science and Technology, Cochin 682022, India
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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Tsoi AYK, Wong RCH, Ng TB, Fong WP. First report on a potato I family chymotrypsin inhibitor from the seeds of a Cucurbitaceous plant, Momordica cochinchinensis. Biol Chem 2004; 385:185-9. [PMID: 15101561 DOI: 10.1515/bc.2004.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A 7514-Da chymotrypsin inhibitor was isolated from the seed extract of Momordica cochinchinensis (Family Cucurbitaceae) by chromatography on chymotrypsin-Sepharose 4B and subsequently by C18 reversed-phase HPLC. This inhibitor, named MCoCl, possessed remarkable thermostability and was stable from pH 2 to 12. MCoCl also inhibited subtilisin, but had at least 50-fold lower inhibitory activity towards trypsin and elastase. Amino acid sequencing of a peptide fragment of MCoCl revealed a sequence of 23 amino acids. Comparison of this sequence and the molecular mass with those of other protease inhibitors suggests that MCoCl belongs to the potato I inhibitor family.
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Affiliation(s)
- Alex Y K Tsoi
- Department of Biochemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
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Wang HX, Ng TB. Purification of castamollin, a novel antifungal protein from Chinese chestnuts. Protein Expr Purif 2003; 32:44-51. [PMID: 14680938 DOI: 10.1016/s1046-5928(03)00212-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2003] [Revised: 05/27/2003] [Indexed: 11/26/2022]
Abstract
A novel antifungal protein, designated castamollin, was isolated from Chinese chestnut (Castanea mollisima) seeds with a procedure involving ion exchange chromatography on DEAE-cellulose, affinity chromatography on Affi-gel blue gel, ion exchange chromatography on CM-Sepharose and FPLC-gel filtration on Superdex 75. Castamollin possessed a novel N-terminal sequence demonstrating little similarity to N-terminal sequences of Castanea sativa chitinase. Castamollin exhibited a molecular mass of 37kDa in gel filtration and SDS-PAGE. It inhibited the activity of human immunodeficiency virus-1 reverse transcriptase with an IC(50) of 7microM and translation in a cell-free rabbit reticulocyte lysate system with an IC(50) of 2.7microM. Castamollin displayed antifungal activity against Botrytis cinerea, Mycosphaerella arachidicola, Physalospora piricola, and Coprinus comatus but was devoid of lectin activity.
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Affiliation(s)
- H X Wang
- Department of Microbiology, College of Biological Science, China Agricultural University, Beijing, China
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Ng TB, Lam SK, Fong WP. A homodimeric sporamin-type trypsin inhibitor with antiproliferative, HIV reverse transcriptase-inhibitory and antifungal activities from wampee (Clausena lansium) seeds. Biol Chem 2003; 384:289-93. [PMID: 12675522 DOI: 10.1515/bc.2003.032] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A homodimeric trypsin inhibitor with a molecular mass of 54 kDa was isolated from the seeds of Clausena lansium (Lour) Skeels with a very simple procedure comprising extraction with an aqueous buffer and ion exchange chromatography on CM-cellulose. It inhibited trypsin with an IC50 of 2.2 nM but was without any inhibitory effect on chymotrypsin and proteinase K. The uptake of MTT by human leukemia HL60 and hepatoma Hep G2 cells was inhibited with an IC50 of 100 microM. Translation in the cell-free rabbit reticulocyte lysate system was inhibited with an IC50 of 3.6 microM. The activity of HIV-1 reverse transcriptase was reduced in the presence of the trypsin inhibitor. The trypsin inhibitor exerted antifungal activity toward Physalospora piricola but not Mycosphaerella arachidicola, Botrytis cinerea, Fusarium oxysporum or Coprinus comatus.
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Affiliation(s)
- Tzi B Ng
- Department of Biochemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
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Ng TB, Parkash A, Tso WW. Purification and characterization of alpha- and beta-benincasins, arginine/glutamate-rich peptides with translation-inhibiting activity from wax gourd seeds. Peptides 2003; 24:11-6. [PMID: 12576080 DOI: 10.1016/s0196-9781(02)00271-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Two peptides, with a molecular mass of about 11 kDa and an N-terminal sequence abundant in arginine and glutamine residues, were isolated from wax gourd seeds. The isolation protocol included affinity chromatography on Affi-gel blue gel, ion-exchange chromatography on Mono-S and gel filtration on Superdex 75. The peptides, designated alpha- and beta-benincasins, inhibited cell-free translation in a rabbit reticulocyte lysate system with an IC(50) of 20 and 320 pM, respectively. Alpha-benincasin exhibited weak antifungal activity toward Coprinus comatus and Physalospora piricola but not toward Mycosphaerella arachidicola.
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Affiliation(s)
- T B Ng
- Department of Biochemistry, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China.
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Wang H, Ng TB. Isolation of a novel deoxyribonuclease with antifungal activity from Asparagus officinalis seeds. Biochem Biophys Res Commun 2001; 289:120-4. [PMID: 11708787 DOI: 10.1006/bbrc.2001.5963] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A deoxyribonuclease distinct from the previously isolated asparagus ribosome-inactivating proteins, possessing a molecular weight of 30 kDa and requiring a pH of 7.5 for optimum hydrolytic activity toward herring sperm DNA, was isolated from Asparagus officinalis seeds. The isolation procedure involved extraction with saline, (NH(4))(2)SO(4) precipitation, ion-exchange chromatography on DEAE-cellulose, affinity chromatography on Affi-gel blue gel, ion-exchange chromatography on CM-Sepharose, and FPLC gel filtration on Superdex 75. The doxyribonuclease was unadsorbed onto DEAE-cellulose and Affi-gel blue gel and adsorbed onto CM-Sepharose. It exhibited the novel N-terminal sequence, GIEVIKIREL. The deoxyribonuclease was purified to a specific activity of 1584 units/mg. It was devoid of ribonuclease, protease, and HIV-1 reverse transcriptase-inhibitory activities. However, it inhibited cell-free translation in a rabbit reticulocyte lysate system with an IC(50) of 20 microM. It exhibited antifungal activity toward Botrytis cinerea but not toward Fusarium oxysporum and Mycosphaerella arachidicola.
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Affiliation(s)
- H Wang
- Department of Microbiology, China Agricultural University, Beijing, China
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Wang H, Ye XY, Ng TB. Purification of chrysancorin, a novel antifungal protein with mitogenic activity from garland chrysanthemum seeds. Biol Chem 2001; 382:947-51. [PMID: 11501760 DOI: 10.1515/bc.2001.118] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A novel antifungal protein, designated chrysancorin, was isolated from seeds of Chrysanthemum coronarium var. spatiosum with a procedure involving ion exchange chromatography on DEAE-cellulose, affinity chromatography on Affi-gel blue resin, ion exchange chromatography on SP-Sepharose and FPLC-gel filtration on Superdex 75. The N-terminus of chrysancorin displays sequence similarity to the genomic sequence of chromosome 1 from Arabidopsis thaliana BAC T19E23. Chrysancorin exhibits a molecular mass of 13.4 kDa in gel filtration and SDS-polyacrylamide gel electrophoresis. It stimulates the proliferation of mouse splenocytes and inhibits the activity of human immunodeficiency virus-1 reverse transcriptase. The protein possesses antifungal activity against Botrytis cinerea, Mycosphaerella arachidicola and Physalospora piricola, but not against Rhizoctonia solani, Fusarium oxysporum and Coprinus comatus. However, we could not detect antibacterial activity against a variety of bacteria.
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Affiliation(s)
- H Wang
- Department of Microbiology, College of Biological Science, China Agricultural University, Beijing, China
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Cao MJ, Osatomi K, Hara K, Ishihara T. Purification of a novel myofibril-bound serine proteinase inhibitor (MBSPI) from the skeletal muscle of lizard fish. Comp Biochem Physiol B Biochem Mol Biol 2001; 128:19-25. [PMID: 11163300 DOI: 10.1016/s1096-4959(00)00296-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
A novel myofibril-bound serine proteinase inhibitor (MBSPI) was purified to homogeneity from the skeletal muscle of lizard fish (Saurida wanieso). Purification was carried out by ammonium sulfate fractionation, followed by column chromatographies on DEAE-Sephacel, SP-Sepharose and Sephadex G-150. MBSPI was purified 7.7-fold starting from the DEAE-Sephacel fraction, with a yield of 0.2%. It is a monomeric protein with the molecular mass of 50 kDa as estimated by SDS-PAGE and gel filtration. MBSPI reveals high inhibition specificity toward a myofibril-bound serine proteinase (MBSP) purified from lizard fish muscle. No inhibition is detected toward bovine trypsin, bovine chymotrypsin, two trypsins from carp hepatopancreas and a serine proteinase isolated from the sarcoplasmic fraction of white croaker muscle. It does not exert any inhibitory activity toward a myofibril-bound serine proteinase from carp muscle.
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Affiliation(s)
- M J Cao
- Graduate School of Marine Science and Engineering, Nagasaki University, Bunkyo, 852-8521, Nagasaki, Japan
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Levleva EV, Rudenskaya YA, Zimacheva AV, Mosolov VV. A trypsin inhibitor from amaranth (Amaranthus cruentus) leaves. APPL BIOCHEM MICRO+ 2000. [DOI: 10.1007/bf02731890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Macedo ML, de Matos DG, Machado OL, Marangoni S, Novello JC. Trypsin inhibitor from Dimorphandra mollis seeds: purification and properties. PHYTOCHEMISTRY 2000; 54:553-558. [PMID: 10963446 DOI: 10.1016/s0031-9422(00)00155-2] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A trypsin inhibitor from Dimorphandra mollis seeds was isolated to apparent homogeneity by a combination of ammonium sulfate precipitation, gel filtration, ion-exchange and affinity chromatographic techniques. SDS-PAGE analysis gave an apparent molecular weight of 20 kDa, and isoelectric focusing analysis demonstrated the presence of three isoforms. The partial N-terminal amino acid sequence of the purified protein showed a high degree of homology with various members of the Kunitz family of inhibitors. This inhibitor, which inhibited trypsin activity with a Ki of 5.3 x 10(-10) M, is formed by a single polypeptide chain with an arginine residue in the reactive site.
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Affiliation(s)
- M L Macedo
- Departamento de Ciências Naturais, Universidade Federal de Mato Grosso do Sul, Três Lagoas, Brazil.
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