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Ghevondyan D, Soghomonyan T, Hovhannisyan P, Margaryan A, Paloyan A, Birkeland NK, Antranikian G, Panosyan H. Detergent-resistant α-amylase derived from Anoxybacillus karvacharensis K1 and its production based on whey. Sci Rep 2024; 14:12682. [PMID: 38830978 DOI: 10.1038/s41598-024-63606-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Accepted: 05/30/2024] [Indexed: 06/05/2024] Open
Abstract
In the field of biotechnology, the utilization of agro-industrial waste for generating high-value products, such as microbial biomass and enzymes, holds significant importance. This study aimed to produce recombinant α-amylase from Anoxybacillus karvacharensis strain K1, utilizing whey as an useful growth medium. The purified hexahistidine-tagged α-amylase exhibited remarkable homogeneity, boasting a specific activity of 1069.2 U mg-1. The enzyme displayed its peak activity at 55 °C and pH 6.5, retaining approximately 70% of its activity even after 3 h of incubation at 55 °C. Its molecular weight, as determined via SDS-PAGE, was approximately 69 kDa. The α-amylase demonstrated high activity against wheat starch (1648.8 ± 16.8 U mg-1) while exhibiting comparatively lower activity towards cyclodextrins and amylose (≤ 200.2 ± 16.2 U mg-1). It exhibited exceptional tolerance to salt, withstanding concentrations of up to 2.5 M. Interestingly, metal ions and detergents such as sodium dodecyl sulfate (SDS), Triton 100, Triton 40, and Tween 80, 5,5'-dithio-bis-[2-nitrobenzoic acid (DNTB), β-mercaptoethanol (ME), and dithiothreitol (DTT) had no significant inhibitory effect on the enzyme's activity, and the presence of CaCl2 (2 mM) even led to a slight activation of the recombinant enzyme (1.4 times). The Michaelis constant (Km) and maximum reaction rate (Vmax), were determined using soluble starch as a substrate, yielding values of 1.2 ± 0.19 mg mL-1 and 1580.3 ± 183.7 μmol mg-1 protein min-1, respectively. Notably, the most favorable conditions for biomass and recombinant α-amylase production were achieved through the treatment of acid whey with β-glucosidase for 24 h.
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Affiliation(s)
- Diana Ghevondyan
- Department of Biochemistry, Microbiology and Biotechnology, Yerevan State University, Alex Manoogian 1, 0025, Yerevan, Armenia
- Biology Faculty, Research Institute of Biology, Yerevan State University, Alex Manoogian 1, 0025, Yerevan, Armenia
| | - Tigran Soghomonyan
- Laboratory of Protein Technologies, Scientific and Production Center "Armbiotechnology" NAS RA, 0056, Yerevan, Armenia
| | - Pargev Hovhannisyan
- Department of Biochemistry, Microbiology and Biotechnology, Yerevan State University, Alex Manoogian 1, 0025, Yerevan, Armenia
- Department of Biological Sciences, University of Bergen, NO-5020, Bergen, Norway
- Department of Microbiology, Biocenter, University of Wuerzburg, 97074, Wuerzburg, Germany
| | - Armine Margaryan
- Department of Biochemistry, Microbiology and Biotechnology, Yerevan State University, Alex Manoogian 1, 0025, Yerevan, Armenia
- Biology Faculty, Research Institute of Biology, Yerevan State University, Alex Manoogian 1, 0025, Yerevan, Armenia
| | - Ani Paloyan
- Laboratory of Protein Technologies, Scientific and Production Center "Armbiotechnology" NAS RA, 0056, Yerevan, Armenia
| | - Nils-Kåre Birkeland
- Department of Biological Sciences, University of Bergen, NO-5020, Bergen, Norway
| | - Garabed Antranikian
- Center of Biobased Solutions (CBBS), Institute of Technical Biocatalysis, Hamburg University of Technology, 21073, Hamburg, Germany
| | - Hovik Panosyan
- Department of Biochemistry, Microbiology and Biotechnology, Yerevan State University, Alex Manoogian 1, 0025, Yerevan, Armenia.
- Biology Faculty, Research Institute of Biology, Yerevan State University, Alex Manoogian 1, 0025, Yerevan, Armenia.
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Slavić MŠ, Kojić M, Margetić A, Stanisavljević N, Gardijan L, Božić N, Vujčić Z. Highly stable and versatile α-amylase from Anoxybacillus vranjensis ST4 suitable for various applications. Int J Biol Macromol 2023; 249:126055. [PMID: 37524287 DOI: 10.1016/j.ijbiomac.2023.126055] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 07/26/2023] [Accepted: 07/27/2023] [Indexed: 08/02/2023]
Abstract
α-Amylase from the thermophilic bacterial strain Anoxybacillus vranjensis ST4 (AVA) was cloned into the pMALc5HisEk expression vector and successfully expressed and purified from the Escherichia coli ER2523 host strain. AVA belongs to the GH13_5 subfamily of glycoside hydrolases and has 7 conserved sequence regions (CSRs) distributed in three distinct domains (A, B, C). In addition, there is a starch binding domain (SBD) from the CBM20 family of carbohydrate binding modules (CBMs). AVA is a monomer of 66 kDa that achieves maximum activity at 60-80 °C and is active and stable over a wide pH range (4.0-9.0). AVA retained 50 % of its activity after 31 h of incubation at 60 °C and was resistant to a large number of denaturing agents. It hydrolyzed starch granules very efficiently, releasing maltose, maltotriose and maltopentaose as the main products. The hydrolysis rates of raw corn, wheat, horseradish, and potato starch, at a concentration of 10 %, were 87.8, 85.9, 93.0, and 58 %, respectively, at pH 8.5 over a 3 h period. This study showed that the high level of expression as well as the properties of this highly stable and versatile enzyme show all the prerequisites for successful application in industry.
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Affiliation(s)
- Marinela Šokarda Slavić
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, Department of Chemistry, Belgrade, Republic of Serbia.
| | - Milan Kojić
- Institute of Virology, Vaccines and Sera "Torlak", Belgrade, Republic of Serbia; University of Belgrade, Institute of Molecular Genetics and Genetic Engineering (IMGGE), Belgrade, Republic of Serbia
| | - Aleksandra Margetić
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, Department of Chemistry, Belgrade, Republic of Serbia
| | - Nemanja Stanisavljević
- University of Belgrade, Institute of Molecular Genetics and Genetic Engineering (IMGGE), Belgrade, Republic of Serbia
| | - Lazar Gardijan
- University of Belgrade, Institute of Molecular Genetics and Genetic Engineering (IMGGE), Belgrade, Republic of Serbia
| | - Nataša Božić
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, Department of Chemistry, Belgrade, Republic of Serbia
| | - Zoran Vujčić
- University of Belgrade, Faculty of Chemistry, Department of Biochemistry, Belgrade, Republic of Serbia
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da Rosa DF, Macedo AJ. The genus Anoxybacillus: an emerging and versatile source of valuable biotechnological products. Extremophiles 2023; 27:22. [PMID: 37584877 DOI: 10.1007/s00792-023-01305-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 07/14/2023] [Indexed: 08/17/2023]
Abstract
Thermophilic and alkaliphilic microorganisms are unique organisms that possess remarkable survival strategies, enabling them to thrive on a diverse range of substrates. Anoxybacillus, a genus of thermophilic and alkaliphilic bacteria, encompasses 24 species and 2 subspecies. In recent years, extensive research has unveiled the diverse array of thermostable enzymes within this relatively new genus, holding significant potential for industrial and environmental applications. The biomass of Anoxybacillus has demonstrated promising results in bioremediation techniques, while the recently discovered metabolites have exhibited potential in medicinal experiments. This review aims to provide an overview of the key experimental findings related to the biotechnological applications utilizing bacteria from the Anoxybacillus genus.
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Affiliation(s)
- Deisiane Fernanda da Rosa
- Laboratório de Diversidade Microbiana (LABDIM), Faculdade de Farmácia and Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre, 91501-970, Brazil
| | - Alexandre José Macedo
- Laboratório de Diversidade Microbiana (LABDIM), Faculdade de Farmácia and Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre, 91501-970, Brazil.
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4
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Omeroglu MA, Baltaci MO, Adiguzel A. Anoxybacillus: an overview of a versatile genus with recent biotechnological applications. World J Microbiol Biotechnol 2023; 39:139. [PMID: 36995480 DOI: 10.1007/s11274-023-03583-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 03/15/2023] [Indexed: 03/31/2023]
Abstract
The Bacillaceae family members are considered to be a good source of microbial factories for biotechnological processes. In contrast to Bacillus and Geobacillus, Anoxybacillus, which would be thermophilic and spore-forming group of bacteria, is a relatively new genus firstly proposed in the year of 2000. The development of thermostable microbial enzymes, waste management and bioremediation processes would be a crucial parameter in the industrial sectors. There has been increasing interest in Anoxybacillus strains for biotechnological applications. Therefore, various Anoxybacillus strains isolated from different habitats have been explored and identified for biotechnological and industrial purposes such as enzyme production, bioremediation and biodegradation of toxic compounds. Certain strains have ability to produce exopolysaccharides possessing biological activities including antimicrobial, antioxidant and anticancer. This current review provides past and recent discoveries regarding Anoxybacillus strains and their potential biotechnological applications in enzyme industry, environmental processes and medicine.
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Affiliation(s)
- Mehmet Akif Omeroglu
- Faculty of Science, Department of Molecular Biology and Genetics, Ataturk University, Erzurum, 25400, Turkey
| | - Mustafa Ozkan Baltaci
- Faculty of Science, Department of Molecular Biology and Genetics, Ataturk University, Erzurum, 25400, Turkey.
| | - Ahmet Adiguzel
- Faculty of Science, Department of Molecular Biology and Genetics, Ataturk University, Erzurum, 25400, Turkey.
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Sharif S, Shah AH, Fariq A, Jannat S, Rasheed S, Yasmin A. Optimization of amylase production using response surface methodology from newly isolated thermophilic bacteria. Heliyon 2023; 9:e12901. [PMID: 36747954 PMCID: PMC9898621 DOI: 10.1016/j.heliyon.2023.e12901] [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: 06/20/2022] [Revised: 01/05/2023] [Accepted: 01/06/2023] [Indexed: 01/20/2023] Open
Abstract
Present study was aimed at screening and characterizing thermostable amylase-producing bacteria from water and sediment samples of unexplored hot spring of Tatta Pani Kotli Azad Kashmir. Four thermophilic isolates were characterized on morphological, biochemical, physiological basis and were authenticated by molecular analysis. By 16S rDNA sequencing, isolates were identified as Anoxybacillus mongoliensis (MBT001), Anoxybacillus flavithermus (MBT002), Bacillus (MBT004). Among all identified strains, MBT003 showed maximum homology with both Anoxybacillus mongoliensis and Anoxybacillus flavithermus. Amylase activity was analyzed qualitatively in starch agar and quantitatively by DNS method. The optimal enzyme production was observed and authenticated by Response Surface Methodology at 7 pH, 70 °C, 1.25% substrate concentration, 300 μL of inocula volume after 48 h of incubation. Optimum amylase activity (4.4 U/mL) and stability (3.3 U/mL) was observed with 1.5% soluble starch at 70 °C. Maximum activity (3.7 U/mL) and stability (1.5 U/mL) was found at pH 8. Enzyme activity was increased in the presence of MgSO4 and CaCl2. Amylase was stable with surfactants and commercial detergents for 30 min. Supplementation of the enzyme with commercial detergent improved the washing ability of the detergent. This investigation has revealed that these thermostable bacteria are excellent source of amylase which can be used commercially for generating economic activity on sustainable basis.
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Affiliation(s)
- Sobia Sharif
- Biotechnology Research Lab, Department of Biotechnology, University of Kotli, Azad Jammu and Kashmir, Pakistan
| | - Asad Hussain Shah
- Biotechnology Research Lab, Department of Biotechnology, University of Kotli, Azad Jammu and Kashmir, Pakistan,School of Life Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Michal Smith Building, Oxford Road Manchester, UK,Department of Biotechnology, University of Kotli, Azad Jammu and Kashmir, Pakistan,Corresponding author.School of Life Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Michal Smith Building, Oxford Road Manchester, UK.
| | - Anila Fariq
- Biotechnology Research Lab, Department of Biotechnology, University of Kotli, Azad Jammu and Kashmir, Pakistan
| | - Sammyia Jannat
- Biotechnology Research Lab, Department of Biotechnology, University of Kotli, Azad Jammu and Kashmir, Pakistan
| | - Sajida Rasheed
- Biotechnology Research Lab, Department of Biotechnology, University of Kotli, Azad Jammu and Kashmir, Pakistan
| | - Azra Yasmin
- Biotechnology Research Lab, Department of Biotechnology, University of Kotli, Azad Jammu and Kashmir, Pakistan,Department of Biotechnology, Fatima Jinnah Women University, Rawalpindi, Pakistan
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Matpan Bekler F, Güven K, Gül Güven R. Purification and characterization of novel α-amylase from Anoxybacillus ayderensis FMB1. BIOCATAL BIOTRANSFOR 2020. [DOI: 10.1080/10242422.2020.1856097] [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]
Affiliation(s)
- Fatma Matpan Bekler
- Department of Biology, Faculty of Science, Dicle University, Diyarbakır, Turkey
| | - Kemal Güven
- Department of Molecular Biology and Genetics, Faculty of Science, Dicle University, Diyarbakır, Turkey
| | - Reyhan Gül Güven
- Department of Science Teaching, Faculty of Education, Dicle University, Diyarbakır, Turkey
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Cai Y, Huang Y, Huang X, Fan Z, Yu T. Efficient biodegradation of organic matter using a thermophilic bacterium and development of a cost-effective culture medium for industrial use. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2020; 55:686-696. [PMID: 32107954 DOI: 10.1080/10934529.2020.1732173] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/02/2020] [Accepted: 02/13/2020] [Indexed: 06/10/2023]
Abstract
Microorganisms with efficient organic matter degradation ability are essential for organic waste treatment. In this study, a thermophilic bacterium, Bacillus thermoliquefaciens, was identified to have excellent cellulase, amylase, and protease activity, and provided efficient degradation of food waste. This is the first report on the organic matter degradation potential of B. thermoliquefaciens. Using a "one-variable-at-a-time" approach and response surface methodology, the optimal culture conditions for B. thermoliquefaciens were determined to be a 5% inoculation level, 50 °C culture temperature, 25 mL filling volumes in 250 mL flasks, and 180 rpm shaking for 24 h. The optimized medium was formulated as 1 g Na2HPO4, 1 g KH2PO4, 0.05 g MgSO4, 3 g NaCl, 0.05 g CaCl2, 11.44 g wheat bran powder, 4.92 g soybean meal, and 1 L distilled water at pH 7.12. The maximum biomass attained was 1.57 ± 0.153 × 109 CFU/mL. The cost of this medium was 4.18 times less than that before optimization. This promising result lays a foundation for future industrial application of this bacterium to the degradation of organic waste.
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Affiliation(s)
- Yiting Cai
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture, Key Laboratory for Agro-Products Nutritional Evaluation of Ministry of Agriculture, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, People's Republic of China
| | - Yining Huang
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture, Key Laboratory for Agro-Products Nutritional Evaluation of Ministry of Agriculture, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, People's Republic of China
| | - Xuedi Huang
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture, Key Laboratory for Agro-Products Nutritional Evaluation of Ministry of Agriculture, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, People's Republic of China
| | - Zhuoying Fan
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture, Key Laboratory for Agro-Products Nutritional Evaluation of Ministry of Agriculture, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, People's Republic of China
| | - Ting Yu
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture, Key Laboratory for Agro-Products Nutritional Evaluation of Ministry of Agriculture, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, People's Republic of China
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Rubiano-Labrador C, Díaz-Cárdenas C, López G, Gómez J, Baena S. Colombian Andean thermal springs: reservoir of thermophilic anaerobic bacteria producing hydrolytic enzymes. Extremophiles 2019; 23:793-808. [PMID: 31555903 DOI: 10.1007/s00792-019-01132-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 09/13/2019] [Indexed: 11/25/2022]
Abstract
Anaerobic cultivable microbial communities in thermal springs producing hydrolytic enzymes were studied. Thermal water samples from seven thermal springs located in the Andean volcanic belt, in the eastern and central mountain ranges of the Colombian Andes were used as inocula for the growth and isolation of thermophilic microorganisms using substrates such as starch, gelatin, xylan, cellulose, Tween 80, olive oil, peptone and casamino acids. These springs differed in temperature (50-70 °C) and pH (6.5-7.5). The predominant ion in eastern mountain range thermal springs was sulphate, whereas that in central mountain range springs was bicarbonate. A total of 40 anaerobic thermophilic bacterial strains that belonged to the genera Thermoanaerobacter, Caloramator, Anoxybacillus, Caloranaerobacter, Desulfomicrobium, Geotoga, Hydrogenophilus, Desulfacinum and Thermoanaerobacterium were isolated. To investigate the metabolic potential of these isolates, selected strains were analysed for enzymatic activities to identify strains than can produce hydrolytic enzymes. We demonstrated that these thermal springs contained diverse microbial populations of anaerobic thermophilic comprising different metabolic groups of bacteria including strains belonging to the genera Thermoanaerobacter, Caloramator, Anoxybacillus, Caloranaerobacter, Desulfomicrobium, Geotoga, Hydrogenophilus, Desulfacinum and Thermoanaerobacterium with amylases, proteases, lipases, esterases, xylanases and pectinases; therefore, the strains represent a promising source of enzymes with biotechnological potential.
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Affiliation(s)
- Carolina Rubiano-Labrador
- Unidad de Saneamiento y Biotecnología Ambiental, Departamento de Biología, Pontificia Universidad Javeriana, 56710, Bogotá DC, Colombia
- Facultad de Ciencias Básicas, Universidad Tecnológica de Bolívar, Cartagena de Indias D.T. y C., Colombia
| | - Carolina Díaz-Cárdenas
- Unidad de Saneamiento y Biotecnología Ambiental, Departamento de Biología, Pontificia Universidad Javeriana, 56710, Bogotá DC, Colombia.
| | - Gina López
- Unidad de Saneamiento y Biotecnología Ambiental, Departamento de Biología, Pontificia Universidad Javeriana, 56710, Bogotá DC, Colombia
| | - Javier Gómez
- Unidad de Saneamiento y Biotecnología Ambiental, Departamento de Biología, Pontificia Universidad Javeriana, 56710, Bogotá DC, Colombia
| | - Sandra Baena
- Unidad de Saneamiento y Biotecnología Ambiental, Departamento de Biología, Pontificia Universidad Javeriana, 56710, Bogotá DC, Colombia
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Arabacı N, Arıkan B. An amylopullulanase (ApuNP1) from Geobacillus thermoleovorans NP1: biochemical characterization and its potential industrial applications. Prep Biochem Biotechnol 2019; 49:127-135. [PMID: 30620883 DOI: 10.1080/10826068.2018.1550655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
An amylopullulanase was produced by Geobacillus thermoleovorans NP1. The optimum enzyme production occurred at 45°C and pH 7.0 (12 hr). NP1 amylopullulanase (ApuNP1) exhibited the maximal activity at 50°C and pH 6.0 and was stable between 30-50°C, and pH 3.0-12.0 for 24 hr. The enzyme showed two bands with molecular weights of 112 and 107 kDa in sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). The amylopullulanase retained 100% of its activity in the presence of 10 mM of Ca2+, Ba2+, Zn2+, Mg2+, Cu2+, EDTA, and PMSF. While the enzyme showed resistance to 5% of TritonX-100, Tween 20, and Tween 80, the activity was inhibited by 5% β-mercaptoethanol and H2O2. While the hydrolysis products of pullulan were maltose, maltotriose, and maltodextrin, the starch was hydrolyzed to maltose, maltotriose, and maltodextrin units. This shows that NP1 pullulanase is a type II pullulanase (amylopullulanase). After the liquefaction assay, 12% glucose content was measured with a refractometer in the presence of 20% starch. According to the wash performance tests, the mixture of ApuNP1 and 1% detergent removed almost all of the stains. This novel thermo-acidic amylopullulanase has a potency to be used in detergent, starch, food, baking, textile, and cosmetic industries.
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Affiliation(s)
- Nihan Arabacı
- a Department of Biology , Çukurova University , Adana , Turkey
| | - Burhan Arıkan
- a Department of Biology , Çukurova University , Adana , Turkey
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Cihan AC, Yildiz ED, Sahin E, Mutlu O. Introduction of novel thermostable α-amylases from genus Anoxybacillus and proposing to group the Bacillaceae related α-amylases under five individual GH13 subfamilies. World J Microbiol Biotechnol 2018; 34:95. [PMID: 29904894 DOI: 10.1007/s11274-018-2478-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Accepted: 06/12/2018] [Indexed: 11/25/2022]
Abstract
Among the thermophilic Bacillaceae family members, α-amylase production of 15 bacilli from genus Anoxybacillus was investigated, some of which are biotechnologically important. These Anoxybacillus α-amylase genes displayed ≥ 91.0% sequence similarities to Anoxybacillus enzymes (ASKA, ADTA and GSX-BL), but relatively lower similarities to Geobacillus (≤ 69.4% to GTA, Gt-amyII), and Bacillus aquimaris (≤ 61.3% to BaqA) amylases, all formerly proposed only in a Glycoside Hydrolase 13 (GH13) subfamily. The phylogenetic analyses of 63 bacilli-originated protein sequences among 93 α-amylases revealed the overall relationships within Bacillaceae amylolytic enzymes. All bacilli α-amylases formed 5 clades different from 15 predefined GH13 subfamilies. Their phylogenetic findings, taxonomic relationships, temperature requirements, and comparisonal structural analyses (including their CSR-I-VII regions, 12 sugar- and 4 calcium-binding sites, presence or absence of the complete catalytic machinery, and their currently unassigned status in a valid GH13 subfamiliy) revealed that these five GH13 α-amylase clades related to familly share some common characteristics, but also display differentiative features from each other and the preclassified ones. Based on these findings, we proposed to divide Bacillaceae related GH13 subfamilies into 5 individual groups: the novel a2 subfamily clustered around α-amylase B2M1-A (Anoxybacillus sp.), the a1, a3 and a4 subfamilies (including the representatives E184aa-A (Anoxybacillus sp.), ATA (Anoxybacillus tepidamans), and BaqA,) all of which were composed from the division of the previously grouped single subfamily around α-amylase BaqA, and the undefinite subfamily formerly defined as xy including Bacillus megaterium NL3.
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Affiliation(s)
- Arzu Coleri Cihan
- Faculty of Science, Department of Biology, Ankara University, Tandogan, 06100, Ankara, Turkey.
| | | | - Ergin Sahin
- Faculty of Science, Department of Biology, Ankara University, Tandogan, 06100, Ankara, Turkey
| | - Ozal Mutlu
- Faculty of Arts and Sciences, Department of Biology, Marmara University, Goztepe, 34722, Istanbul, Turkey
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Du R, Song Q, Zhang Q, Zhao F, Kim RC, Zhou Z, Han Y. Purification and characterization of novel thermostable and Ca-independent α-amylase produced by Bacillus amyloliquefaciens BH072. Int J Biol Macromol 2018; 115:1151-1156. [PMID: 29729336 DOI: 10.1016/j.ijbiomac.2018.05.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 04/08/2018] [Accepted: 05/01/2018] [Indexed: 11/24/2022]
Abstract
In the present study, a novel α-amylase produced by Bacillus amyloliquefaciens BH072 was purified and characterized. The molecular weight of purified α-amylase was approximately 68 kDa, determined by Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis (SDS-PAGE) and ten amino acid of N-terminal was NSGLNGYLTH. The kinetic parameters Km and Vmax were 4.27 ± 0.21 mg/mL and 987.34 ± 23.34 U/mg, respectively. Purified α-amylase showed maximal activity at pH 7 and 60 °C. Enzyme remained stable in pH range 6.0-7.0 and 50-80 °C. The activity of the α-amylase was Ca2+ independent and stability in the presence of surfactant, oxidizing and bleaching agents. The β-mercaptoethanol and EDTA greatly enhanced and reduced α-amylase activity, respectively. This enzyme has high hydrolysis rate toward corn, wheat and potato starch and hydrolyzes soluble starch to glucose, maltose, maltotriose and maltotetraose, indicating that the α-amylase represents a promising candidate for applications in the food industry.
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Affiliation(s)
- Renpeng Du
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Qiaozhi Song
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Qiaoge Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Fangkun Zhao
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Rak-Chon Kim
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China; Han Dok Su Pyongyang University of Light Industry, Pyongyang 999093, Democratic People's Republic of Korea
| | - Zhijiang Zhou
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Ye Han
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China.
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Zhang D, Tu T, Wang Y, Li Y, Luo X, Zheng F, Wang X, Bai Y, Huang H, Su X, Yao B, Zhang T, Luo H. Improving the Catalytic Performance of a Talaromyces leycettanus α-Amylase by Changing the Linker Length. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:5041-5048. [PMID: 28573852 DOI: 10.1021/acs.jafc.7b00838] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A novel α-amylase, Amy13A, that consists of these domains was identified in Talaromyces leycettanus JCM12802: catalytic TIM-barrel fold, domain B, domain C, Thr/Ser-rich linker region, and C-terminal CBM20 domain. The wild type and three mutant enzymes were then expressed in Pichia pastoris GS115 to identify the roles of linker length (Amy13A21 and Amy13A33) and CBM20 (Amy13A-CBM) in catalysis. All enzymes had similar enzymatic properties, exhibiting optimal activities at pH 4.5-5.0 and 55-60 °C, but varied in catalytic performance. When using soluble starch as the substrate, Amy13A21 and Amy13A33 showed specific activities (926.3 and 537.8 units/mg, respectively, vs 252.1 units/mg) and catalytic efficiencies (kcat/Km, 25.7 and 22.0 mL s-1 mg-1, respectively, vs 15.4 mL s-1 mg-1) higher than those of the wild type, while Amy13A-CBM performed worse during catalysis. This study reveals the key roles of the CBM and linker length in the catalysis of GH13 α-amylase.
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Affiliation(s)
- Duoduo Zhang
- Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education and Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology , Tianjin 300457, China
| | - Tao Tu
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081, China
| | - Yuan Wang
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081, China
| | - Yeqing Li
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081, China
| | - Xuegang Luo
- Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education and Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology , Tianjin 300457, China
| | - Fei Zheng
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081, China
| | - Xiaoyu Wang
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081, China
| | - Yingguo Bai
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081, China
| | - Huoqing Huang
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081, China
| | - Xiaoyun Su
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081, China
| | - Bin Yao
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081, China
| | - Tongcun Zhang
- Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education and Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology , Tianjin 300457, China
| | - Huiying Luo
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081, China
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El-Sayed AKA, Abou-Dobara MI, El-Fallal AA, Omar NF. Gene sequence, modeling, and enzymatic characterization of α-amylase AmyLa from the thermophileLaceyellasp. DS3. STARCH-STARKE 2017. [DOI: 10.1002/star.201600255] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ahmed K. A. El-Sayed
- Faculty of Science; Department of Botany and Microbiology; Damietta University; New Damietta Egypt
| | - Mohamed I. Abou-Dobara
- Faculty of Science; Department of Botany and Microbiology; Damietta University; New Damietta Egypt
| | - Amira A. El-Fallal
- Faculty of Science; Department of Botany and Microbiology; Damietta University; New Damietta Egypt
| | - Noha F. Omar
- Faculty of Science; Department of Botany and Microbiology; Damietta University; New Damietta Egypt
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