51
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Dong Z, Hao X, Pokhrel DS, Chen X, Liu X, Mchunu NP, Permaul K, Singh S, Niu D, Wang Z. Molecular cloning and biochemical characterization of two novel oligo-1,6-glucosidases fromBacillus mycoidesandThermomyces lanuginosus. STARCH-STARKE 2017. [DOI: 10.1002/star.201700093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Zixing Dong
- Key Laboratory of Industrial Fermentation Microbiology; Ministry of Education; College of Biotechnology; Tianjin University of Science & Technology; Tianjin P.R. China
- College of Chemical Engineering and Materials Science; Tianjin University of Science & Technology; Tianjin P.R. China
| | - Xiaoming Hao
- Key Laboratory of Industrial Fermentation Microbiology; Ministry of Education; College of Biotechnology; Tianjin University of Science & Technology; Tianjin P.R. China
| | - Daman S. Pokhrel
- Key Laboratory of Industrial Fermentation Microbiology; Ministry of Education; College of Biotechnology; Tianjin University of Science & Technology; Tianjin P.R. China
| | - Xiaoling Chen
- Key Laboratory of Industrial Fermentation Microbiology; Ministry of Education; College of Biotechnology; Tianjin University of Science & Technology; Tianjin P.R. China
| | - Xiaoguang Liu
- College of Chemical Engineering and Materials Science; Tianjin University of Science & Technology; Tianjin P.R. China
| | - Nokuthula P. Mchunu
- Faculty of Applied Sciences; Department of Biotechnology & Food Technology; Durban University of Technology; Durban South Africa
| | - Kugenthiren Permaul
- Faculty of Applied Sciences; Department of Biotechnology & Food Technology; Durban University of Technology; Durban South Africa
| | - Suren Singh
- Faculty of Applied Sciences; Department of Biotechnology & Food Technology; Durban University of Technology; Durban South Africa
| | - Dandan Niu
- College of Biological Science and Technology; Fuzhou University; Fuzhou P.R. China
| | - Zhengxiang Wang
- Key Laboratory of Industrial Fermentation Microbiology; Ministry of Education; College of Biotechnology; Tianjin University of Science & Technology; Tianjin P.R. China
- College of Chemical Engineering and Materials Science; Tianjin University of Science & Technology; Tianjin P.R. China
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52
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Yerlikaya S, Zengin G, Mollica A, Baloglu MC, Celik Altunoglu Y, Aktumsek A. A Multidirectional Perspective for Novel Functional Products: In vitro Pharmacological Activities and In silico Studies on Ononis natrix subsp. hispanica. Front Pharmacol 2017; 8:600. [PMID: 28919860 PMCID: PMC5585257 DOI: 10.3389/fphar.2017.00600] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Accepted: 08/21/2017] [Indexed: 12/12/2022] Open
Abstract
The genus Ononis has important value as traditional drugs and foods. In the present work, we aimed to assess the chemical profiles and biological effects of Ononis natrix subsp. hispanica extracts (ethyl acetate, methanol, and water). For chemical profile, total and individual phenolic components were detected. For biological effects, antioxidant (DPPH, ABTS, CUPRAC, FRAP, phosphomolybdenum, and metal chelating assays), enzyme inhibitory (against cholinesterase, tyrosinase, α-amylase and α-glucosidase), antimicrobial, DNA protection and cytotoxic abilities were tested. The predominant phenolics were apigenin, luteolin, and quercetin in the tested extracts. Generally, the ethyl acetate and methanol extracts were noted as the most active in the antioxidant and enzyme inhibitory assays. Water extract with different concentrations indicated high level of DNA protection activity. Methanol and ethyl acetate extracts showed antibacterial effect against to Staphylococcus aureus and Staphylococcus epidermidis strains. The cytotoxic effects of O. natrix subsp. hispanica extracts on the survival of HeLa and PC3 cells were determined by MTT cell viability assay. Water and methanol extracts caused initiation of apoptosis for PC3 cell line. Furthermore, molecular docking was performed to better understand interactions between dominant phenolic compounds and selected enzymes. Our results clearly indicate that O. natrix subsp. hispanica could be considered a potential candidate for designing novel pharmaceuticals, cosmeceuticals and nutraceuticals.
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Affiliation(s)
- Serife Yerlikaya
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Kastamonu UniversityKastamonu, Turkey
| | - Gokhan Zengin
- Department of Biology, Science Faculty, Selcuk UniversityKonya, Turkey
| | - Adriano Mollica
- Department of Pharmacy University "G. d'Annunzio" of Chieti-PescaraChieti, Italy
| | - Mehmet C Baloglu
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Kastamonu UniversityKastamonu, Turkey
| | - Yasemin Celik Altunoglu
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Kastamonu UniversityKastamonu, Turkey
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Zengin G, Locatelli M, Stefanucci A, Macedonio G, Novellino E, Mirzaie S, Dvorácskó S, Carradori S, Brunetti L, Orlando G, Menghini L, Ferrante C, Recinella L, Chiavaroli A, Leporini L, Mollica A. Chemical characterization, antioxidant properties, anti-inflammatory activity, and enzyme inhibition of Ipomoea batatas L. leaf extracts. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2017. [DOI: 10.1080/10942912.2017.1357127] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Gokhan Zengin
- Department of Biology, Science Faculty, Selcuk University, Konya, Turkey
| | - Marcello Locatelli
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, Chieti, Italy
| | - Azzurra Stefanucci
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, Chieti, Italy
| | - Giorgia Macedonio
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, Chieti, Italy
| | - Ettore Novellino
- Dipartimento di Farmacia, Università di Napoli “Federico II”, Naples, Italy
| | - Sako Mirzaie
- Department of Biochemistry, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran
| | - Szabolcs Dvorácskó
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Simone Carradori
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, Chieti, Italy
| | - Luigi Brunetti
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, Chieti, Italy
| | - Giustino Orlando
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, Chieti, Italy
| | - Luigi Menghini
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, Chieti, Italy
| | - Claudio Ferrante
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, Chieti, Italy
| | - Lucia Recinella
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, Chieti, Italy
| | - Annalisa Chiavaroli
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, Chieti, Italy
| | - Lidia Leporini
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, Chieti, Italy
| | - Adriano Mollica
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, Chieti, Italy
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
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54
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Zengin G, Mollica A, Aktumsek A, Marie Nancy Picot C, Fawzi Mahomoodally M. In vitro and in silico insights of Cupressus sempervirens, Artemisia absinthium and Lippia triphylla: Bridging traditional knowledge and scientific validation. Eur J Integr Med 2017. [DOI: 10.1016/j.eujim.2017.05.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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55
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Brognaro H, Almeida VM, de Araujo EA, Piyadov V, Santos MAM, Marana SR, Polikarpov I. Biochemical Characterization and Low-Resolution SAXS Molecular Envelope of GH1 β-Glycosidase from Saccharophagus degradans. Mol Biotechnol 2017; 58:777-788. [PMID: 27670285 DOI: 10.1007/s12033-016-9977-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The marine bacteria Saccharophagus degradans (also known as Microbulbifer degradans), are rod-shaped and gram-negative motile γ-proteobacteria, capable of both degrading a variety of complex polysaccharides and fermenting monosaccharides into ethanol. In order to obtain insights into structure-function relationships of the enzymes, involved in these biochemical processes, we characterized a S. degradans β-glycosidase from glycoside hydrolase family 1 (SdBgl1B). SdBgl1B has the optimum pH of 6.0 and a melting temperature T m of approximately 50 °C. The enzyme has high specificity toward short D-glucose saccharides with β-linkages with the following preferences β-1,3 > β-1,4 ≫ β-1,6. The enzyme kinetic parameters, obtained using artificial substrates p-β-NPGlu and p-β-NPFuc and also the disaccharides cellobiose, gentiobiose and laminaribiose, revealed SdBgl1B preference for p-β-NPGlu and laminaribiose, which indicates its affinity for glucose and also preference for β-1,3 linkages. To better understand structural basis of the enzyme activity its 3D model was built and analysed. The 3D model fits well into the experimentally retrieved low-resolution SAXS-based envelope of the enzyme, confirming monomeric state of SdBgl1B in solution.
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Affiliation(s)
- Hevila Brognaro
- Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São Carlense 400, São Carlos, SP, 13566-590, Brazil
| | - Vitor Medeiros Almeida
- Instituto de Química, Universidade de São Paulo, Avenida Prof. Lineu Prestes, 748, Bloco 10, Sala 1054, São Paulo, SP, 05508-900, Brazil
| | - Evandro Ares de Araujo
- Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São Carlense 400, São Carlos, SP, 13566-590, Brazil
| | - Vasily Piyadov
- Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São Carlense 400, São Carlos, SP, 13566-590, Brazil
| | - Maria Auxiliadora Morim Santos
- Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São Carlense 400, São Carlos, SP, 13566-590, Brazil
| | - Sandro Roberto Marana
- Instituto de Química, Universidade de São Paulo, Avenida Prof. Lineu Prestes, 748, Bloco 10, Sala 1054, São Paulo, SP, 05508-900, Brazil
| | - Igor Polikarpov
- Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São Carlense 400, São Carlos, SP, 13566-590, Brazil.
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56
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Zengin G, Ceylan R, Katanić J, Mollica A, Aktumsek A, Boroja T, Matić S, Mihailović V, Stanić S, Aumeeruddy-Elalfi Z, Yilmaz MA, Mahomoodally MF. Combining in vitro, in vivo and in silico approaches to evaluate nutraceutical potentials and chemical fingerprints of Moltkia aurea and Moltkia coerulea. Food Chem Toxicol 2017; 107:540-553. [PMID: 28390858 DOI: 10.1016/j.fct.2017.04.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 04/02/2017] [Accepted: 04/04/2017] [Indexed: 12/11/2022]
Abstract
Methanolic extracts of Moltkia aurea Boiss. (MA) and Moltkia coerulea (Willd.) Lehm. (MC) were investigated for their antioxidant capacity and enzymatic inhibitory potential against acetylcholinesterase, butyrylcholinesterase, α-amylase, α-glucosidase, and tyrosinase in vitro. MA and MC were also explored for their antimicrobial effect, as well as for their possible genotoxic/antigenotoxic potential on Drosophila melanogaster in vivo. The total bioactive components (phenolic (TPC) and flavonoid contents (TFC)) were determined and liquid chromatography-tandem mass spectrometry (LC-MS/MS) metabolite profiling of MA and MC appraised. The plausible docking poses of bioactive compounds to key enzymes were further studied using molecular modelling approach. MA proved to be a better antioxidant with higher TPC and TFC compared to MC. Protocatechuic acid, rutin, hesperidin and malic acid were the most abundant in these extracts. Both MA and MC exhibited antigenotoxic potential with a %R in DNA damage of 60.90 and 53.14% respectively. The docking studies revealed that rutin, hesperidin, and rosmarinic acid have the best scores for all the enzymes tested. MA and MC were found to be rich in phytochemicals with potent antioxidant, antimicrobial, and antigenotoxic activities that can be further studied for the management of neurodegenerative complications, diabetes, and hyperpigmentation.
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Affiliation(s)
- Gokhan Zengin
- Department of Biology, Faculty of Science, Selcuk University, Campus, Konya, Turkey
| | - Ramazan Ceylan
- Department of Biology, Faculty of Science, Selcuk University, Campus, Konya, Turkey.
| | - Jelena Katanić
- Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, Kragujevac, Serbia
| | - Adriano Mollica
- Department of Pharmacy, University "G. d'Annunzio" Chieti-Pescara, 66100 Chieti, Italy
| | - Abdurrahman Aktumsek
- Department of Biology, Faculty of Science, Selcuk University, Campus, Konya, Turkey
| | - Tatjana Boroja
- Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, Kragujevac, Serbia
| | - Sanja Matić
- Department of Biology and Ecology, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, Kragujevac, Serbia
| | - Vladimir Mihailović
- Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, Kragujevac, Serbia
| | - Snežana Stanić
- Department of Biology and Ecology, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, Kragujevac, Serbia
| | | | - Mustafa Abdullah Yilmaz
- Research and Application of Science and Technology Center (DUBTAM), University of Dicle, Diyarbakır, Turkey
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57
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Zengin G, Bulut G, Mollica A, Haznedaroglu MZ, Dogan A, Aktumsek A. Bioactivities of Achillea phrygia and Bupleurum croceum based on the composition of phenolic compounds: In vitro and in silico approaches. Food Chem Toxicol 2017; 107:597-608. [PMID: 28343034 DOI: 10.1016/j.fct.2017.03.037] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 03/18/2017] [Accepted: 03/21/2017] [Indexed: 11/29/2022]
Abstract
This study presents the effects of the Achillea phrygia Boiss. et Bal. and Bupleurum croceum Fenzl. extracts obtained by different solvents (ethyl acetate, methanol and water) on selected enzyme inhibitory effects and antioxidant ability with screening bioactive compounds. Total and individual bioactive compounds were detected by spectrophotometric and HPLC-DAD techniques. Antioxidant abilities were evaluated by different methods including free radical scavenging (ABTS and DPPH), reducing power (CUPRAC and FRAP), phosphomolybdenum and metal chelating. Enzyme inhibitory effects were tested against cholinesterases, tyrosinase, amylase, glucosidase and lipase. Total phenolic contents were ranged from 20.52 mgGAE/g extract (B. croceum methanol extract) to 41.13 mgGAE/g extract (A. phrygia methanol extract). Generally, methanol and water extracts showed the strongest antioxidant abilities, while the ethyl acetate extracts had the most promising enzyme inhibitory effects. HPLC analysis revealed the abundance of some phenolics including rutin, quercetin, sinapic acid and chlorogenic acid, respectively. These components were also assessed using molecular modelling with the aim to study their docking properties on a set of six enzymes used in this study. Overall, these species could be suggested as valuable sources of natural-bioactive agents for developing new functional, pharmacological and health-promoting ingredients.
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Affiliation(s)
- Gokhan Zengin
- Selcuk University, Science Faculty, Department of Biology, Campus, 42250, Konya, Turkey.
| | - Gizem Bulut
- Marmara University, Pharmacy Faculty, Department of Pharmaceutical Botany, Istanbul, Turkey
| | - Adriano Mollica
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100, Chieti, Italy
| | | | - Ahmet Dogan
- Marmara University, Pharmacy Faculty, Department of Pharmaceutical Botany, Istanbul, Turkey
| | - Abdurrahman Aktumsek
- Selcuk University, Science Faculty, Department of Biology, Campus, 42250, Konya, Turkey
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58
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Llorent-Martínez EJ, Zengin G, Fernández-de Córdova ML, Bender O, Atalay A, Ceylan R, Mollica A, Mocan A, Uysal S, Guler GO, Aktumsek A. Traditionally Used Lathyrus Species: Phytochemical Composition, Antioxidant Activity, Enzyme Inhibitory Properties, Cytotoxic Effects, and in silico Studies of L. czeczottianus and L. nissolia. Front Pharmacol 2017; 8:83. [PMID: 28289386 PMCID: PMC5326780 DOI: 10.3389/fphar.2017.00083] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 02/08/2017] [Indexed: 02/03/2023] Open
Abstract
Members of the genus Lathyrus are used as food and as traditional medicines. In order to find new sources of biologically-active compounds, chemical and biological profiles of two Lathyrus species (L. czeczottianus and L. nissolia) were investigated. Chemical profiles were evaluated by HPLC-ESI-MSn, as well as by their total phenolic and flavonoid contents. In addition, antioxidant, enzyme inhibitory, and cytotoxic effects were also investigated. Antioxidant properties were tested by using different assays (DPPH, ABTS, CUPRAC, FRAP, phosphomolybdenum, and metal chelation). Cholinesterases (AChE and BChE), tyrosinase, α-amylase, and α-glucosidase were used to evaluate enzyme inhibitory effects. Moreover, vitexin (apigenin-8-C-glucoside) and 5-O-caffeoylquinic acid were further subjected to molecular docking experiments to provide insights about their interactions at molecular level with the tested enzymes. In vitro cytotoxic effects were examined against human embryonic kidney cells (HEK293) by using iCELLigence real time cell analysis system. Generally, L. czeczottianus exhibited stronger antioxidant properties than L. nissolia. However, L. nissolia had remarkable enzyme inhibitory effects against cholinesterase, amylase and glucosidase. HPLC-ESI-MSn analysis revealed that flavonoids were major components in these extracts. On the basis of these results, Lathyrus extracts were rich in biologically active components; thus, these species could be utilized to design new phytopharmaceutical and nutraceutical formulations.
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Affiliation(s)
| | - Gokhan Zengin
- Department of Biology, Science Faculty, Selcuk University Konya, Turkey
| | | | - Onur Bender
- Biotechnology Institute, Ankara University Ankara, Turkey
| | - Arzu Atalay
- Biotechnology Institute, Ankara University Ankara, Turkey
| | - Ramazan Ceylan
- Department of Biology, Science Faculty, Selcuk University Konya, Turkey
| | - Adriano Mollica
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara Chieti, Italy
| | - Andrei Mocan
- Department of Pharmaceutical Botany, "Iuliu Hatieganu" University of Medicine and PharmacyCluj-Napoca, Romania; Institute for Life Sciences, University of Agricultural Sciences and Veterinary Medicine Cluj-NapocaCluj-Napoca, Romania
| | - Sengul Uysal
- Department of Biology, Science Faculty, Selcuk University Konya, Turkey
| | - Gokalp O Guler
- Department of Biological Education, Ahmet Kelesoglu Education Faculty, Necmettin Erbakan University Konya, Turkey
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59
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Uysal S, Aktumsek A, Picot CMN, Sahan A, Mollica A, Zengin G, Fawzi Mahomoodally M. A comparative in vitro and in silico study of the biological potential and chemical fingerprints of Dorcycinum pentapyllum subsp. haussknechtii using three extraction procedures. NEW J CHEM 2017. [DOI: 10.1039/c7nj03497k] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Ethyl acetate, methanol, and water extracts prepared by maceration, Soxhlet, and ultrasonication were profiled and studied using in vitro and in silico methodologies.
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Affiliation(s)
- Sengul Uysal
- Department of Biology
- Faculty of Science
- Selcuk University
- Campus/Konya
- Turkey
| | | | - Carene M. N. Picot
- Department of Health Sciences
- Faculty of Science
- University of Mauritius
- Réduit
- Mauritius
| | - Alime Sahan
- Department of Biology
- Faculty of Science
- Selcuk University
- Campus/Konya
- Turkey
| | - Adriano Mollica
- Department of Pharmacy University “G. d’Annunzio” of Chieti-Pescara
- Chieti
- Italy
| | - Gokhan Zengin
- Department of Biology
- Faculty of Science
- Selcuk University
- Campus/Konya
- Turkey
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60
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Zengin G, Uysal A, Aktumsek A, Mocan A, Mollica A, Locatelli M, Custodio L, Neng NR, Nogueira JMF, Aumeeruddy-Elalfi Z, Mahomoodally MF. Euphorbia denticulata Lam.: A promising source of phyto-pharmaceuticals for the development of novel functional formulations. Biomed Pharmacother 2016; 87:27-36. [PMID: 28040595 DOI: 10.1016/j.biopha.2016.12.063] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 12/12/2016] [Accepted: 12/16/2016] [Indexed: 11/26/2022] Open
Abstract
In this study, Methanolic extracts of Euphorbia denticulata parts (flowers, leaf, stem, and mix of aerial parts) were assessed for a panoply of bioactivities. Inhibitory potential against key enzymes involved in diabetes (α-glucosidase and α-amylase), obesity (pancreatic lipase), neurodegenerative diseases (cholinesterases), and hyperpigmentation (tyrosinase) was evaluated. The antioxidant and antibacterial properties were also assessed. The total phenolic, flavonoid, and phytochemical profile were established using HPLC/DAD and molecular modelling studies on specific target compounds were performed in silico. The flower extract was found to be rich in phenolics and flavonoids, (60.11±1.40mgGAE/g and 42.04±0.16mgRE/g respectively), which tend to correlate with the high radical scavenging activity of this extract (120.34±3.33mgTE/g and 165.42±2.16mgTE/g for DPPH and ABTS respectively). Catechin, epicatechin, gallic acid, p-OH-Benzoic acid, rosmarinic acid, and epigallocatechin gallate, found in significant abundance in the extracts were assessed using molecular modelling with the aim to study their docking properties on a set of six enzymes used in this study. The extracts were moderately effective with MIC values ranging between 1.56 to 6.25mg/ml, but potent growth inhibitors of MRSA strains. Results amassed herein can be used as a stimulus for further studies geared towards the development of novel phyto-pharmaceuticals.
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Affiliation(s)
- Gokhan Zengin
- Selcuk University, Science Faculty, Department of Biology, Campus, 42250, Konya, Turkey.
| | - Ahmet Uysal
- Department of Medicinal Laboratory, Vocational School of Health Services, Selcuk University, Konya, Turkey
| | - Abdurrahman Aktumsek
- Selcuk University, Science Faculty, Department of Biology, Campus, 42250, Konya, Turkey
| | - Andrei Mocan
- Department of Pharmaceutical Botany, "Iuliu Hatieganu" University of Medicine and Pharmacy, 8, V. Babes Street, Cluj-Napoca, Romania
| | - Adriano Mollica
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100, Chieti, Italy
| | - Marcello Locatelli
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100, Chieti, Italy
| | - Luisa Custodio
- Centre of Marine Sciences, Faculty of Sciences and Technology, Campus of Gambelas, University of Algarve, Faro, Portugal
| | - Nuno R Neng
- Faculty of Sciences of the University of Lisbon, Centre of Chemistry and Biochemistry/Department of Chemistry and Biochemistry, Building C8, Floor 5, Campo Grande, 1749-016 Lisbon, Portugal
| | - José M F Nogueira
- Faculty of Sciences of the University of Lisbon, Centre of Chemistry and Biochemistry/Department of Chemistry and Biochemistry, Building C8, Floor 5, Campo Grande, 1749-016 Lisbon, Portugal
| | | | - M Fawzi Mahomoodally
- Department of Health Sciences, Faculty of Science, University of Mauritius, Mauritius
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61
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Mocan A, Zengin G, Crişan G, Mollica A. Enzymatic assays and molecular modeling studies of Schisandra chinensis lignans and phenolics from fruit and leaf extracts. J Enzyme Inhib Med Chem 2016; 31:200-210. [DOI: 10.1080/14756366.2016.1222585] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Andrei Mocan
- Department of Pharmaceutical Botany, Faculty of Pharmacy, “Iuliu Haţieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania,
| | - Gokhan Zengin
- Department of Biology, Faculty of Science, Selcuk University, Konya, Turkey, and
| | - Gianina Crişan
- Department of Pharmaceutical Botany, Faculty of Pharmacy, “Iuliu Haţieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania,
| | - Adriano Mollica
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, Chieti, Italy
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Okuyama M, Saburi W, Mori H, Kimura A. α-Glucosidases and α-1,4-glucan lyases: structures, functions, and physiological actions. Cell Mol Life Sci 2016; 73:2727-51. [PMID: 27137181 PMCID: PMC11108350 DOI: 10.1007/s00018-016-2247-5] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 04/22/2016] [Indexed: 11/30/2022]
Abstract
α-Glucosidases (AGases) and α-1,4-glucan lyases (GLases) catalyze the degradation of α-glucosidic linkages at the non-reducing ends of substrates to release α-glucose and anhydrofructose, respectively. The AGases belong to glycoside hydrolase (GH) families 13 and 31, and the GLases belong to GH31 and share the same structural fold with GH31 AGases. GH13 and GH31 AGases show diverse functions upon the hydrolysis of substrates, having linkage specificities and size preferences, as well as upon transglucosylation, forming specific α-glucosidic linkages. The crystal structures of both enzymes were determined using free and ligand-bound forms, which enabled us to understand the important structural elements responsible for the diverse functions. A series of mutational approaches revealed features of the structural elements. In particular, amino-acid residues in plus subsites are of significance, because they regulate transglucosylation, which is used in the production of industrially valuable oligosaccharides. The recently solved three-dimensional structure of GLase from red seaweed revealed the amino-acid residues essential for lyase activity and the strict recognition of the α-(1 → 4)-glucosidic substrate linkage. The former was introduced to the GH31 AGase, and the resultant mutant displayed GLase activity. GH13 and GH31 AGases hydrate anhydrofructose to produce glucose, suggesting that AGases are involved in the catabolic pathway used to salvage unutilized anhydrofructose.
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Affiliation(s)
- Masayuki Okuyama
- Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan
| | - Wataru Saburi
- Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan
| | - Haruhide Mori
- Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan.
| | - Atsuo Kimura
- Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan.
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Viigand K, Visnapuu T, Mardo K, Aasamets A, Alamäe T. Maltase protein of Ogataea (Hansenula) polymorpha is a counterpart to the resurrected ancestor protein ancMALS of yeast maltases and isomaltases. Yeast 2016; 33:415-32. [PMID: 26919272 PMCID: PMC5074314 DOI: 10.1002/yea.3157] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 02/05/2016] [Accepted: 02/15/2016] [Indexed: 01/11/2023] Open
Abstract
Saccharomyces cerevisiae maltases use maltose, maltulose, turanose and maltotriose as substrates, isomaltases use isomaltose, α‐methylglucoside and palatinose and both use sucrose. These enzymes are hypothesized to have evolved from a promiscuous α‐glucosidase ancMALS through duplication and mutation of the genes. We studied substrate specificity of the maltase protein MAL1 from an earlier diverged yeast, Ogataea polymorpha (Op), in the light of this hypothesis. MAL1 has extended substrate specificity and its properties are strikingly similar to those of resurrected ancMALS. Moreover, amino acids considered to determine selective substrate binding are highly conserved between Op MAL1 and ancMALS. Op MAL1 represents an α‐glucosidase in which both maltase and isomaltase activities are well optimized in a single enzyme. Substitution of Thr200 (corresponds to Val216 in S. cerevisiae isomaltase IMA1) with Val in MAL1 drastically reduced the hydrolysis of maltose‐like substrates (α‐1,4‐glucosides), confirming the requirement of Thr at the respective position for this function. Differential scanning fluorimetry (DSF) of the catalytically inactive mutant Asp199Ala of MAL1 in the presence of its substrates and selected monosaccharides suggested that the substrate‐binding pocket of MAL1 has three subsites (–1, +1 and +2) and that binding is strongest at the –1 subsite. The DSF assay results were in good accordance with affinity (Km) and inhibition (Ki) data of the enzyme for tested substrates, indicating the power of the method to predict substrate binding. Deletion of either the maltase (MAL1) or α‐glucoside permease (MAL2) gene in Op abolished the growth of yeast on MAL1 substrates, confirming the requirement of both proteins for usage of these sugars. © 2016 The Authors. Yeast published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Katrin Viigand
- Department of Genetics, Institute of Molecular and Cell Biology, University of Tartu, Estonia
| | - Triinu Visnapuu
- Department of Genetics, Institute of Molecular and Cell Biology, University of Tartu, Estonia
| | - Karin Mardo
- Department of Genetics, Institute of Molecular and Cell Biology, University of Tartu, Estonia
| | - Anneli Aasamets
- Department of Genetics, Institute of Molecular and Cell Biology, University of Tartu, Estonia
| | - Tiina Alamäe
- Department of Genetics, Institute of Molecular and Cell Biology, University of Tartu, Estonia
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Shen X, Saburi W, Gai Z, Kato K, Ojima-Kato T, Yu J, Komoda K, Kido Y, Matsui H, Mori H, Yao M. Structural analysis of the α-glucosidase HaG provides new insights into substrate specificity and catalytic mechanism. ACTA ACUST UNITED AC 2015; 71:1382-91. [DOI: 10.1107/s139900471500721x] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 04/10/2015] [Indexed: 11/10/2022]
Abstract
α-Glucosidases, which catalyze the hydrolysis of the α-glucosidic linkage at the nonreducing end of the substrate, are important for the metabolism of α-glucosides. Halomonas sp. H11 α-glucosidase (HaG), belonging to glycoside hydrolase family 13 (GH13), only has high hydrolytic activity towards the α-(1→4)-linked disaccharide maltose among naturally occurring substrates. Although several three-dimensional structures of GH13 members have been solved, the disaccharide specificity and α-(1→4) recognition mechanism of α-glucosidase are unclear owing to a lack of corresponding substrate-bound structures. In this study, four crystal structures of HaG were solved: the apo form, the glucosyl-enzyme intermediate complex, the E271Q mutant in complex with its natural substrate maltose and a complex of the D202N mutant with D-glucose and glycerol. These structures explicitly provide insights into the substrate specificity and catalytic mechanism of HaG. A peculiar long β→α loop 4 which exists in α-glucosidase is responsible for the strict recognition of disaccharides owing to steric hindrance. Two residues, Thr203 and Phe297, assisted with Gly228, were found to determine the glycosidic linkage specificity of the substrate at subsite +1. Furthermore, an explanation of the α-glucosidase reaction mechanism is proposed based on the glucosyl-enzyme intermediate structure.
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Saburi W, Rachi-Otsuka H, Hondoh H, Okuyama M, Mori H, Kimura A. Structural elements responsible for the glucosidic linkage-selectivity of a glycoside hydrolase family 13 exo-glucosidase. FEBS Lett 2015; 589:865-9. [DOI: 10.1016/j.febslet.2015.02.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 02/19/2015] [Accepted: 02/19/2015] [Indexed: 10/23/2022]
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66
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Wang YL, Chow SY, Lin YT, Hsieh YC, Lee GC, Liaw SH. Structures of trehalose synthase from Deinococcus radiodurans reveal that a closed conformation is involved in catalysis of the intramolecular isomerization. ACTA ACUST UNITED AC 2014; 70:3144-54. [PMID: 25478833 PMCID: PMC4257617 DOI: 10.1107/s1399004714022500] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Accepted: 10/13/2014] [Indexed: 11/21/2022]
Abstract
Crystal structures of the wild type and the N253A mutant of trehalose synthase from D. radiodurans in complex with the inhibitor Tris have been determined at 2.7 and 2.21 Å resolution, respectively, and they display a closed conformation for catalysis of the intramolecular isomerization. Trehalose synthase catalyzes the simple conversion of the inexpensive maltose into trehalose with a side reaction of hydrolysis. Here, the crystal structures of the wild type and the N253A mutant of Deinococcus radiodurans trehalose synthase (DrTS) in complex with the inhibitor Tris are reported. DrTS consists of a catalytic (β/α)8 barrel, subdomain B, a C-terminal β domain and two TS-unique subdomains (S7 and S8). The C-terminal domain and S8 contribute the majority of the dimeric interface. DrTS shares high structural homology with sucrose hydrolase, amylosucrase and sucrose isomerase in complex with sucrose, in particular a virtually identical active-site architecture and a similar substrate-induced rotation of subdomain B. The inhibitor Tris was bound and mimics a sugar at the −1 subsite. A maltose was modelled into the active site, and subsequent mutational analysis suggested that Tyr213, Glu320 and Glu324 are essential within the +1 subsite for the TS activity. In addition, the interaction networks between subdomains B and S7 seal the active-site entrance. Disruption of such networks through the replacement of Arg148 and Asn253 with alanine resulted in a decrease in isomerase activity by 8–9-fold and an increased hydrolase activity by 1.5–1.8-fold. The N253A structure showed a small pore created for water entry. Therefore, our DrTS-Tris may represent a substrate-induced closed conformation that will facilitate intramolecular isomerization and minimize disaccharide hydrolysis.
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Affiliation(s)
- Yung Lin Wang
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 11221, Taiwan
| | - Sih Yao Chow
- Department of Life Sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei 11221, Taiwan
| | - Yi Ting Lin
- Department of Life Sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei 11221, Taiwan
| | - Yu Chiao Hsieh
- Department of Life Sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei 11221, Taiwan
| | - Guan Chiun Lee
- Department of Life Sciences, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Shwu Huey Liaw
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 11221, Taiwan
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Similarities and differences in the biochemical and enzymological properties of the four isomaltases from Saccharomyces cerevisiae. FEBS Open Bio 2014; 4:200-12. [PMID: 24649402 PMCID: PMC3953731 DOI: 10.1016/j.fob.2014.02.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 01/29/2014] [Accepted: 02/10/2014] [Indexed: 11/21/2022] Open
Abstract
Isomaltases (Imap) preferably cleave α-(1,6) bonds, yet show clear substrate ambiguity. With only 3 different aa, Ima3p activities and thermostability diverge from Ima2p. The most distant protein, Ima5p, is extremely sensitive to temperature. Ima5p nevertheless displays most of the same catalytic properties as Ima1p and Ima2p. Ima5p challenges previous conclusions about specific aa needs for the active site.
The yeast Saccharomyces cerevisiae IMA multigene family encodes four isomaltases sharing high sequence identity from 65% to 99%. Here, we explore their functional diversity, with exhaustive in-vitro characterization of their enzymological and biochemical properties. The four isoenzymes exhibited a preference for the α-(1,6) disaccharides isomaltose and palatinose, with Michaëlis–Menten kinetics and inhibition at high substrates concentration. They were also able to hydrolyze trisaccharides bearing an α-(1,6) linkage, but also α-(1,2), α-(1,3) and α-(1,5) disaccharides including sucrose, highlighting their substrate ambiguity. While Ima1p and Ima2p presented almost identical characteristics, our results nevertheless showed many singularities within this protein family. In particular, Ima3p presented lower activities and thermostability than Ima2p despite only three different amino acids between the sequences of these two isoforms. The Ima3p_R279Q variant recovered activity levels of Ima2p, while the Leu-to-Pro substitution at position 240 significantly increased the stability of Ima3p and supported the role of prolines in thermostability. The most distant protein, Ima5p, presented the lowest optimal temperature and was also extremely sensitive to temperature. Isomaltose hydrolysis by Ima5p challenged previous conclusions about the requirement of specific amino acids for determining the specificity for α-(1,6) substrates. We finally found a mixed inhibition by maltose for Ima5p while, contrary to a previous work, Ima1p inhibition by maltose was competitive at very low isomaltose concentrations and uncompetitive as the substrate concentration increased. Altogether, this work illustrates that a gene family encoding proteins with strong sequence similarities can lead to enzyme with notable differences in biochemical and enzymological properties.
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Voordeckers K, Brown CA, Vanneste K, van der Zande E, Voet A, Maere S, Verstrepen KJ. Reconstruction of ancestral metabolic enzymes reveals molecular mechanisms underlying evolutionary innovation through gene duplication. PLoS Biol 2012; 10:e1001446. [PMID: 23239941 PMCID: PMC3519909 DOI: 10.1371/journal.pbio.1001446] [Citation(s) in RCA: 147] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Accepted: 10/30/2012] [Indexed: 11/24/2022] Open
Abstract
Gene duplications are believed to facilitate evolutionary innovation. However, the mechanisms shaping the fate of duplicated genes remain heavily debated because the molecular processes and evolutionary forces involved are difficult to reconstruct. Here, we study a large family of fungal glucosidase genes that underwent several duplication events. We reconstruct all key ancestral enzymes and show that the very first preduplication enzyme was primarily active on maltose-like substrates, with trace activity for isomaltose-like sugars. Structural analysis and activity measurements on resurrected and present-day enzymes suggest that both activities cannot be fully optimized in a single enzyme. However, gene duplications repeatedly spawned daughter genes in which mutations optimized either isomaltase or maltase activity. Interestingly, similar shifts in enzyme activity were reached multiple times via different evolutionary routes. Together, our results provide a detailed picture of the molecular mechanisms that drove divergence of these duplicated enzymes and show that whereas the classic models of dosage, sub-, and neofunctionalization are helpful to conceptualize the implications of gene duplication, the three mechanisms co-occur and intertwine.
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Affiliation(s)
- Karin Voordeckers
- VIB Laboratory for Systems Biology, Leuven, Belgium
- CMPG Laboratory for Genetics and Genomics, KU Leuven, Leuven, Belgium
| | - Chris A. Brown
- VIB Laboratory for Systems Biology, Leuven, Belgium
- CMPG Laboratory for Genetics and Genomics, KU Leuven, Leuven, Belgium
- Fathom Information Design, Boston, Massachusetts, United States of America
- Faculty of Arts and Sciences Center for Systems Biology, Harvard University, Cambridge, Massachusetts, United States of America
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts, United States of America
| | - Kevin Vanneste
- VIB Department of Plant Systems Biology, Gent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Gent, Belgium
| | - Elisa van der Zande
- VIB Laboratory for Systems Biology, Leuven, Belgium
- CMPG Laboratory for Genetics and Genomics, KU Leuven, Leuven, Belgium
| | - Arnout Voet
- Laboratory for Molecular en Structural Biology, KU Leuven, Leuven, Belgium
| | - Steven Maere
- VIB Department of Plant Systems Biology, Gent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Gent, Belgium
| | - Kevin J. Verstrepen
- VIB Laboratory for Systems Biology, Leuven, Belgium
- CMPG Laboratory for Genetics and Genomics, KU Leuven, Leuven, Belgium
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