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Saadi S, Saari N, Ghazali HM, Abdulkarim MS. Mitigation of antinutritional factors and protease inhibitors of defatted winged bean-seed proteins using thermal and hydrothermal treatments: Denaturation/unfolding coupled hydrolysis mechanism. Curr Res Food Sci 2022; 5:207-221. [PMID: 35106485 PMCID: PMC8789533 DOI: 10.1016/j.crfs.2022.01.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 01/09/2022] [Accepted: 01/10/2022] [Indexed: 11/18/2022] Open
Abstract
The inactivation of antinutritional factors, protease inhibitors within winged bean protein was induced by two respective method treatments. The physical method based on steam vapor that was conducted using an autoclave and chemical method consisting on pH-gradients of buffer solutions prepared at respective acidic pH, neutral pH and alkaline pH ranges. The activity of remaining protease inhibitors of bowman birk inhibitor (BBI), and kunitz-trypsin inhibitor (KTI) after and before treatments was enzymatically confirmed using relevant antagonistic trypsin and combined trypsin-α-chymotrypsin digests. The resulting molecular assembly indicating an interval molecular relaxation range of °0.16 < °DA < °0.2 corresponding to reconformation in protein units with volume-mass changes of -2.17 < ∂v' < +2.17 and with denaturation/unfolding efficiency based on heat capacity ΔCp of 36.36 < DE/UF% < 54.67. These structural changes had a great benefit in determining and producing functional protein hydrolysates.
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Affiliation(s)
- Sami Saadi
- Institut de la Nutrition, de l’Alimentation et des Technologies Agro-alimentaires INATAA 25017, Université Frères Mentouri, Constantine 1, Algeria
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Nazamid Saari
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Hasanah Mohd Ghazali
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
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Abstract
Legumes are an essential food source worldwide. Their high-quality proteins, complex carbohydrates, dietary fiber, and relatively low-fat content make these an important functional food. Known to possess a multitude of health benefits, legume consumption is associated with the prevention and treatment of cardiovascular diseases (CVD). Legume crude protein isolates and purified peptides possess many cardiopreventive properties. Here, we review selected economically valued legumes, their taxonomy and distribution, biochemical composition, and their protein components and the mechanism(s) of action associated with cardiovascular health. Most of the legume protein studies had shown upregulation of low-density lipoprotein (LDL) receptor leading to increased binding and uptake, in effect significantly reducing total lipid levels in the blood serum and liver. This is followed by decreased biosynthesis of cholesterol and fatty acids. To understand the relationship of identified genes from legume studies, we performed gene network analysis, pathway, and gene ontology (GO) enrichment. Results showed that the genes were functionally interrelated while enrichment and pathway analysis revealed involvement in lipid transport, fatty acid and triglyceride metabolic processes, and regulatory processes. This review is the first attempt to collate all known mechanisms of action of legume proteins associated with cardiovascular health. This also provides a snapshot of possible targets leading to systems-level approaches to further investigate the cardiometabolic potentials of legumes.
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Cotacallapa-Sucapuca M, Vega EN, Maieves HA, Berrios JDJ, Morales P, Fernández-Ruiz V, Cámara M. Extrusion Process as an Alternative to Improve Pulses Products Consumption. A Review. Foods 2021; 10:1096. [PMID: 34063375 PMCID: PMC8156340 DOI: 10.3390/foods10051096] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/10/2021] [Accepted: 05/11/2021] [Indexed: 12/19/2022] Open
Abstract
The development of new food products obtained by extrusion processing has increased in recent years. Extrusion is used by the food industry to produce a wide variety of food products, such as ready-to-eat foods (e.g., snacks), among others. Pulses have also gained popularity as novel food ingredients in the formulation of a variety of food and food products, due to their high content of macro and micronutrients, and bioactive compounds that improve the nutritional and functional properties of the final food products. In this review, the impact of extrusion variables on proteins, carbohydrates, vitamins, phenolics and antinutritional compounds in pulses and pulse-based formulations are highlighted. Particularly, the impact of the specific mechanical energy. Also, the preservation, increase and/or reduction in those functional compounds, as a consequence of different extrusion processing conditions, are discussed.
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Affiliation(s)
- Mario Cotacallapa-Sucapuca
- Nutrition and Food Science Department, Pharmacy Faculty, Complutense University of Madrid (UCM), Plaza Ramón y Cajal s/n, E-28040 Madrid, Spain; (M.C.-S.); (E.N.V.); (H.A.M.); (P.M.); (V.F.-R.)
- Escuela Profesional de Ingeniería Agroindustrial, Universidad Nacional de Moquegua, Prolongación Calle Ancash s/n, Moquegua 18001, Peru
| | - Erika N. Vega
- Nutrition and Food Science Department, Pharmacy Faculty, Complutense University of Madrid (UCM), Plaza Ramón y Cajal s/n, E-28040 Madrid, Spain; (M.C.-S.); (E.N.V.); (H.A.M.); (P.M.); (V.F.-R.)
| | - Helayne A. Maieves
- Nutrition and Food Science Department, Pharmacy Faculty, Complutense University of Madrid (UCM), Plaza Ramón y Cajal s/n, E-28040 Madrid, Spain; (M.C.-S.); (E.N.V.); (H.A.M.); (P.M.); (V.F.-R.)
- Faculdade de Nutrição, Universidade Federal de Pelotas, Rua Gomes Carneiro nº 01, Pelotas 96010-610, RS, Brazil
| | | | - Patricia Morales
- Nutrition and Food Science Department, Pharmacy Faculty, Complutense University of Madrid (UCM), Plaza Ramón y Cajal s/n, E-28040 Madrid, Spain; (M.C.-S.); (E.N.V.); (H.A.M.); (P.M.); (V.F.-R.)
| | - Virginia Fernández-Ruiz
- Nutrition and Food Science Department, Pharmacy Faculty, Complutense University of Madrid (UCM), Plaza Ramón y Cajal s/n, E-28040 Madrid, Spain; (M.C.-S.); (E.N.V.); (H.A.M.); (P.M.); (V.F.-R.)
| | - Montaña Cámara
- Nutrition and Food Science Department, Pharmacy Faculty, Complutense University of Madrid (UCM), Plaza Ramón y Cajal s/n, E-28040 Madrid, Spain; (M.C.-S.); (E.N.V.); (H.A.M.); (P.M.); (V.F.-R.)
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4
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Liu K, Li XY, Luo JP, Zha XQ. Bioactivities. Food Hydrocoll 2021. [DOI: 10.1007/978-981-16-0320-4_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Bessada SM, Barreira JC, Oliveira MBP. Pulses and food security: Dietary protein, digestibility, bioactive and functional properties. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2019.08.022] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Khazaei H, Subedi M, Nickerson M, Martínez-Villaluenga C, Frias J, Vandenberg A. Seed Protein of Lentils: Current Status, Progress, and Food Applications. Foods 2019; 8:E391. [PMID: 31487958 PMCID: PMC6769807 DOI: 10.3390/foods8090391] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 08/28/2019] [Accepted: 08/30/2019] [Indexed: 11/17/2022] Open
Abstract
Grain legumes are widely recognized as staple sources of dietary protein worldwide. Lentil seeds are an excellent source of plant-based proteins and represent a viable alternative to animal and soybean proteins for food processing formulations. Lentil proteins provide not only dietary amino acids but are also a source of bioactive peptides that provide health benefits. This review focuses on the current knowledge of seed protein, extraction and isolation methods, bioactive peptides, and food applications of lentil protein. Lentil is the most rapidly expanding crop for direct human consumption, and has potential for greater impact as a protein source for food processing applications. Improvements in lentil protein quality, amino acid composition, and processing fractions will enhance the nutritional quality of this rapidly expanding crop globally.
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Affiliation(s)
- Hamid Khazaei
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada.
| | - Maya Subedi
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada
| | - Mike Nickerson
- Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada
| | - Cristina Martínez-Villaluenga
- Institute of Food Science, Technology and Nutrition (ICTAN), Spanish National Research Council (CSIC), Jose Antonio Novais 10, 28040 Madrid, Spain
| | - Juana Frias
- Institute of Food Science, Technology and Nutrition (ICTAN), Spanish National Research Council (CSIC), Jose Antonio Novais 10, 28040 Madrid, Spain
| | - Albert Vandenberg
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada
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Vohra K, Garg V, Dureja H. Ethnopharmacology, Phytochemistry and Pharmacology of Lens culinaris Medikus Seeds: An Update. CURRENT NUTRITION & FOOD SCIENCE 2019. [DOI: 10.2174/1573401313666170925155508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background: The seeds of Lens culinaris Medikus belong to family Leguminosae and are
commonly known as masoor pulses, Lentils, and Lens esculenta Moench.
Objective:
The present review provides an up-to-date information on the therapeutic potential of Lentil
seeds including its synonyms, taxonomical classification, geographical distribution, cultivation,
pharmacognosy, phytochemistry, ethnopharmacology and reported biological uses.
Updated Information:
Geographically, L. culinaris seeds are grown throughout North India. They are
lens shaped, grayish brown in color with mucilaginous taste and characteristic odor. They are well
known for their nutritional properties and are also considered as a vital part of a balanced diet. Besides
their contribution to health due to the presence of essential macro- and micro- nutrients, they also contain
various bioactive phytochemicals such as phenolic compounds, saponins, etc. which are responsible
for exhibiting various pharmacological properties. The Lentil seeds are traditionally used to treat
gastrointestinal problems such as dysentery, diarrhea, constipation, strangury, cardiac disorders, skin
diseases, anemia, etc. Due to such an attractive ethnopharmacological profile, various studies have
been conducted on Lentil seeds which recommend the use of Lentil seeds as antioxidant, antibacterial,
antifungal antihyperlipidemic, etc.
Conclusion:
This would assist the researchers to get a better insight into Lentil seeds.
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Affiliation(s)
- Kripi Vohra
- Faculty of Pharmaceutical Sciences, M.D. University, Rohtak (Haryana)-124001, India
| | - Vandana Garg
- Faculty of Pharmaceutical Sciences, M.D. University, Rohtak (Haryana)-124001, India
| | - Harish Dureja
- Faculty of Pharmaceutical Sciences, M.D. University, Rohtak (Haryana)-124001, India
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Polyphenol-Rich Lentils and Their Health Promoting Effects. Int J Mol Sci 2017; 18:ijms18112390. [PMID: 29125587 PMCID: PMC5713359 DOI: 10.3390/ijms18112390] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 11/03/2017] [Accepted: 11/07/2017] [Indexed: 12/16/2022] Open
Abstract
Polyphenols are a group of plant metabolites with potent antioxidant properties, which protect against various chronic diseases induced by oxidative stress. Evidence showed that dietary polyphenols have emerged as one of the prominent scientific interests due to their role in the prevention of degenerative diseases in humans. Possible health beneficial effects of polyphenols are measured based on the human consumption and their bioavailability. Lentil (Lens culinaris; Family: Fabaceae) is a great source of polyphenol compounds with various health-promoting properties. Polyphenol-rich lentils have a potential effect on human health, possessing properties such as antioxidant, antidiabetic, anti-obesity, anti-hyperlipidemic, anti-inflammatory and anticancer. Based on the explorative study, the current comprehensive review aims to give up-to-date information on nutritive compositions, bioactive compounds and the health-promoting effect of polyphenol-rich lentils, which explores their therapeutic values for future clinical studies. All data of in vitro, in vivo and clinical studies of lentils and their impact on human health were collected from a library database and electronic search (Science Direct, PubMed and Google Scholar). Health-promoting information was gathered and orchestrated in the suitable place in the review.
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Oddepally R, Guruprasad L. Isolation, purification, and characterization of a stable defensin-like antifungal peptide from Trigonella foenum-graecum (fenugreek) seeds. BIOCHEMISTRY (MOSCOW) 2015; 80:332-42. [DOI: 10.1134/s0006297915030086] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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10
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Cationic Bioactive Peptide from the Seeds of Benincasa hispida. INTERNATIONAL JOURNAL OF PEPTIDES 2014; 2014:156060. [PMID: 24834076 PMCID: PMC4009219 DOI: 10.1155/2014/156060] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Revised: 03/03/2014] [Accepted: 03/04/2014] [Indexed: 01/22/2023]
Abstract
A designated bioactive peptide “Hispidalin” purified from the seeds of Benincasa hispida, which is a medicinal plant, belongs to Cucurbitaceae family. Purification was achieved by using a procedure consisting of extraction from potassium phosphate buffer followed by FPLC and HPLC steps. Based on amino acid residue, this peptide is amphipathic and basic with one net positive charge having isoelectric pH 8.1. This peptide is without sulphur containing amino acid suggesting its extended conformation lacking double bond secondary structure. The results obtained from MALDI-TOF suggested that Hispidalin is of molecular mass 5.7 KDa with 49 amino acid residues and confirmed SDS-PAGE resolved ∼6.0 KDa protein band. This novel and unknown peptide “Hispidalin” showed broad and potent inhibitory effects against various human bacterial and fungal pathogens; its growth inhibition was significantly comparable with commercial antibacterial and antifungal drugs. The Hispidalin at 40 μg/mL concentration exhibited 70.8% DPPH free radical-scavenging activity and 69.5% lipid peroxide inhibition. Thus, in the present study, Hispidalin demonstrated remarkable antimicrobial and antioxidant potentials from the seeds of B. hispida.
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11
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Maria-Neto S, Honorato RV, Costa FT, Almeida RG, Amaro DS, Oliveira JTA, Vasconcelos IM, Franco OL. Bactericidal activity identified in 2S Albumin from sesame seeds and in silico studies of structure-function relations. Protein J 2011; 30:340-50. [PMID: 21691771 DOI: 10.1007/s10930-011-9337-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Pathogenic bacteria constitute an important cause of hospital-acquired infections. However, the misuse of available bactericidal agents has led to the appearance of antibiotic-resistant strains. Thus, efforts to seek new antimicrobials with different action mechanisms would have an enormous impact. Here, a novel antimicrobial protein (SiAMP2) belonging to the 2S albumin family was isolated from Sesamum indicum kernels and evaluated against several bacteria and fungi. Furthermore, in silico analysis was conducted in order to identify conserved residues through other 2S albumin antimicrobial proteins (2S-AMPs). SiAMP2 specifically inhibited Klebsiella sp. Specific regions in the molecule surface where cationic (RR/RRRK) and hydrophobic (MEYWPR) residues are exposed and conserved were proposed as being involved in antimicrobial activity. This study reinforces the hypothesis that plant storage proteins might also play as pathogen protection providing an insight into the mechanism of action for this novel 2S-AMP and evolutionary relations between antimicrobial activity and 2S albumins.
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Affiliation(s)
- Simone Maria-Neto
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, SGAN Quadra, Modulo B, Brasília, Distrito Federal, Brazil.
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12
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Xu W, Wei L, Qu W, Liang Z, Wang J, Peng X, Zhang Y, Huang K. A novel antifungal peptide from foxtail millet seeds. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2011; 91:1630-1637. [PMID: 21445868 DOI: 10.1002/jsfa.4359] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2010] [Revised: 11/28/2010] [Accepted: 01/25/2011] [Indexed: 05/30/2023]
Abstract
BACKGROUND Antifungal proteins (AFP) help plants to combat phytopathogenic fungi and thus protect plants from the devastating damage caused by fungal infections and prevent massive economic losses. To date, several proteins with antibacterial and/or antifungal properties have been isolated and characterized from different plant species and tissues; however, there are no reports concerning the antifungal peptide from foxtail millet seeds. RESULTS An antifungal peptide with a molecular mass of 26.9 kDa was isolated from dry seeds of the foxtail millet (Setaria italica (L.) Beauv.), using a procedure that involved four chromatographic steps. The antifungal peptide was adsorbed on CM-Sepharose, Affi-gel blue gel and Superdex 75. It was further purified by C(18) reverse-phase high-performance liquid chromatography and submitted for analysis of peptide mass fingerprint. The Mascot peptide mass fingerprint of the isolated protein hit no existing protein (score >60), and it was proved to be a novel antifungal peptide. It inhibited mycelial growth in Alternaria alternate with an IC(50) of 1.3 µmol L(-1) , and it also exhibited antifungal activity against Trichoderma viride, Botrytis cinerea and Fusarium oxysporum. Transmission electron microscopy of mold forms of Alternaria alternate after incubation with 20 µg mL(-1) of the antifungal protein for 48 h revealed marked ultrastructural changes in the fungus. CONCLUSION A novel antifungal peptide with high potency was isolated from foxtail millet seeds.
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Affiliation(s)
- Wentao Xu
- Laboratory of Food safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
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13
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Moreira JS, Almeida RG, Tavares LS, Santos MO, Viccini LF, Vasconcelos IM, Oliveira JTA, Raposo NRB, Dias SC, Franco OL. Identification of botryticidal proteins with similarity to NBS-LRR proteins in rosemary pepper (Lippia sidoides Cham.) flowers. Protein J 2011; 30:32-8. [PMID: 21210197 DOI: 10.1007/s10930-010-9299-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Heavy agricultural losses are closely related to attacks by insect-pests and phytopathogens such as bacteria and fungi. Among them, the fungus Botrytis cinerea can cause gray mold in more than 200 different species of plants, and is considered a challenging problem for agribusiness. Fungicides are commonly used to control this pathogen because they are fast-working and easy to apply. However, the continuous use of fungicides may promote the selection of resistant fungi and can also cause profound contamination in ecosystems. Aiming to find alternative strategies to solve these problems, several studies have focused on searching for plant proteins and peptides with antifungal activities (AFPs). With this in mind, this report shows the isolation and characterization of two novels antifungal proteins from flowers of rosemary pepper (Lippia sidoides Cham.) with 10 and 15 kDa. Isolation was performed by using an Octyl-Sepharose hydrophobic column. In vitro bioassays indicated that isolated proteins were able to inhibit B. cinerea development, but were not effective against all bacteria tested. Moreover, N-termini sequences indicate that both proteins showed sequence homology with NBS-LRR R proteins with a lower molecular mass, suggesting possible protein fragmentation. Data reported here could help in the development of biotechnological products for crop protection against phytopathogenic fungi in the near future.
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Affiliation(s)
- João S Moreira
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, SGAN Quadra 916, Módulo B, Av. W5 Norte 70. 790-160 Asa Norte, Brasília, DF-Brazil.
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14
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Wong JH, Ng TB, Cheung RCF, Ye XJ, Wang HX, Lam SK, Lin P, Chan YS, Fang EF, Ngai PHK, Xia LX, Ye XY, Jiang Y, Liu F. Proteins with antifungal properties and other medicinal applications from plants and mushrooms. Appl Microbiol Biotechnol 2010; 87:1221-35. [DOI: 10.1007/s00253-010-2690-4] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2010] [Revised: 05/17/2010] [Accepted: 05/17/2010] [Indexed: 10/19/2022]
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15
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Biocontrol of Fusarium species by a novel lectin with low ecotoxicity isolated from Sebastiania jacobinensis. Food Chem 2010. [DOI: 10.1016/j.foodchem.2009.09.035] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Ma DZ, Wang HX, Ng TB. A peptide with potent antifungal and antiproliferative activities from Nepalese large red beans. Peptides 2009; 30:2089-94. [PMID: 19720103 DOI: 10.1016/j.peptides.2009.08.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2009] [Revised: 08/23/2009] [Accepted: 08/23/2009] [Indexed: 10/20/2022]
Abstract
An antifungal defensin-like peptide with a molecular mass of 7.1kDa was isolated from dried Nepalese large red beans (Phaseolus angularis). The purification protocol employed included ion exchange chromatography on DEAE-cellulose, affinity chromatography on Affi-gel blue gel, ion exchange chromatography on SP-Sepharose, and gel filtration by fast protein liquid chromatography on Superdex 75. The antifungal peptide was unadsorbed on DEAE-cellulose, and adsorbed on Affi-gel blue gel and SP-Sepharose. The antifungal peptide inhibited mycelial growth in Fusarium oxysporum and Mycosphaerella arachidicola with an IC(50) value of 1.4 and 1.8 microM, respectively. It did not inhibit HIV-1 reverse transcriptase when tested up to 200 microM. It exerted an antiproliferative action on L1210 leukemia cells and MBL2 lymphoma cells with an IC(50) of 15 and 60 microM, respectively.
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Affiliation(s)
- D Z Ma
- State Key Laboratory for Agrobiotechnology, Department of Microbiology, China Agricultural University, Beijing 100193, China
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Expression and characterization of two domains of Pinellia ternata agglutinin (PTA), a plant agglutinin from Pinellia ternata with antifungal activity. World J Microbiol Biotechnol 2009. [DOI: 10.1007/s11274-009-0204-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Pelegrini PB, Farias LR, Saude ACM, Costa FT, Bloch C, Silva LP, Oliveira AS, Gomes CEM, Sales MP, Franco OL. A Novel Antimicrobial Peptide from Crotalaria pallida Seeds with Activity Against Human and Phytopathogens. Curr Microbiol 2009; 59:400-4. [DOI: 10.1007/s00284-009-9451-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2008] [Revised: 03/31/2009] [Accepted: 06/25/2009] [Indexed: 10/20/2022]
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Skouri-Gargouri H, Gargouri A. First isolation of a novel thermostable antifungal peptide secreted by Aspergillus clavatus. Peptides 2008; 29:1871-7. [PMID: 18687373 DOI: 10.1016/j.peptides.2008.07.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2008] [Revised: 07/04/2008] [Accepted: 07/07/2008] [Indexed: 11/26/2022]
Abstract
A novel antifungal peptide produced by an indigenous fungal strain (VR) of Aspergillus clavatus was purified. The antifungal peptide was enriched in the supernatant after heat treatment at 70 degrees C. The thermostable character was exploited in the first purification step, as purified peptide was obtained after ultrafiltration and reverse phase-HPLC on C18 column application. The purified peptide named "AcAFP" for A. clavatus antifungal peptide, has molecular mass of 5773Da determined by MALDI-ToF spectrometry. The N-terminal sequence showed a notable identity to the limited family of antifungal peptides produced by ascomycetes fungi. The AcAFP activity remains intact even after heat treatment at 100 degrees C for 1h confirming its thermostability. It exhibits a strong inhibitory activity against mycelial growth of several serious human and plant pathogenic fungi: Fusariuym oxysporum, Fusarium solani, Aspergillus niger, Botrytis cinerea, Alternaria solani, whereas AcAFP did not affect yeast and bacterial growth.
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Affiliation(s)
- Houda Skouri-Gargouri
- Laboratoire de Génétique Moléculaire des Eucaryotes, Centre de Biotechnologie de Sfax, BP "K" 3038-Sfax, Tunisia
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Becker-Ritt AB, Martinelli AHS, Mitidieri S, Feder V, Wassermann GE, Santi L, Vainstein MH, Oliveira JTA, Fiuza LM, Pasquali G, Carlini CR. Antifungal activity of plant and bacterial ureases. Toxicon 2007; 50:971-83. [PMID: 17825863 DOI: 10.1016/j.toxicon.2007.07.008] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2007] [Revised: 07/10/2007] [Accepted: 07/11/2007] [Indexed: 10/23/2022]
Abstract
Ureases (EC 3.5.1.5) are nickel-dependent metalloenzymes that catalyze the hydrolysis of urea to ammonia and carbon dioxide. Produced by plants, fungi and bacteria, but not by animals, ureases share significant homology and similar mechanisms of catalysis, although differing in quaternary structures. While fungal and plant ureases are homo-oligomeric proteins of 90 kDa subunits, bacterial ureases are multimers of two (e.g. Helicobacter pylori) or three subunit complexes. It has been proposed that in plants these enzymes are involved in nitrogen bioavailability and in protection against pathogens. Previous studies by our group have shown that plant ureases, but not a bacterial (Bacillus pasteurii) urease, display insecticidal activity. Herein we demonstrate that (Glycine max) embryo-specific soybean urease, jackbean (Canavalia ensiformis) major urease and a recombinant H. pylori urease impair growth of selected phytopathogenic fungi at sub-micromolar concentrations. This antifungal property of ureases is not affected by treatment of the proteins with an irreversible inhibitor of the ureolytic activity. Scanning electron microscopy of urease-treated fungi suggests plasmolysis and cell wall injuries. Altogether, our data indicate that ureases probably contribute to the plant arsenal of defense compounds against predators and phytopathogens and that the urease defense mechanism is independent of ammonia release from urea.
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Affiliation(s)
- A B Becker-Ritt
- Graduate Program in Molecular and Cellular Biology, Center of Biotechnology, Universidade Federal do Rio Grande do Sul-UFRGS, Brazil
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