1
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Lawal OT, Onuegbu C, Afe AE, Olopoda IA, Igbe FO, Ojo FM, Sanni DM. Biochemical characterization of purified phytase produced from Aspergillus awamori AFE1 associated with the gastrointestinal tract of longhorn beetle ( Cerambycidae latreille). Mycologia 2024:1-10. [PMID: 38819952 DOI: 10.1080/00275514.2024.2350337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 04/24/2024] [Indexed: 06/02/2024]
Abstract
The need for industrially and biotechnologically significant enzymes, such as phytase, is expanding daily as a result of the increased use of these enzymes in a variety of operations, including the manufacture of food, animal feed, and poultry feed. This study sought to characterize purified phytase from A. awamori AFE1 isolated from longhorn beetle for its prospect in industrial applications. Ammonium sulfate precipitation, ion-exchange chromatography, and gel-filtration chromatography were used to purify the crude enzyme obtained from submerged fermentation using phytase-producing media, and its physicochemical characteristics were examined. The homogenous 46.8-kDa phytase showed an 8.1-fold purification and 40.7% recovery. At 70 C and pH 7, the optimum phytase activity was noted. At acidic pH 4-6 and alkaline pH 8-10, it likewise demonstrated relative activity of 88-95% and 67-88%, respectively. It showed 67-70% residual activity between 30 and 70 C after 40 min, and 68-94% residual activity between pH 2 and 12 after 2 h. The presence of Hg+, Mg2+, and Al3+ significantly decreased the enzymatic activity, whereas Ca2+ and Cu2+ enhanced it. Ascorbic acid increased the activity of the purified enzyme, whereas ethylenediaminetetraacetic acid (EDTA) and mercaptoethanol inhibited it. The calculated values for Km and Vmax were 55.4 mM and1.99 μmol/min/mL respectively. A. awamori phytase, which was isolated from a new source, showed unique and remarkable qualities that may find use in industrial operations such as feed pelleting and food processing.
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Affiliation(s)
- Olusola T Lawal
- Department of Medical Biochemistry, School of Basic Medical Sciences, Federal University of Technology, P.M.B. 704, Akure 340252 Nigeria
- Enzyme and Microbial Technology Unit, Department of Biochemistry, School of Life Sciences, Federal University of Technology, P.M.B. 704, Akure 340252, Nigeria
| | - Christian Onuegbu
- Enzyme and Microbial Technology Unit, Department of Biochemistry, School of Life Sciences, Federal University of Technology, P.M.B. 704, Akure 340252, Nigeria
| | - Ayoola E Afe
- Enzyme and Microbial Technology Unit, Department of Biochemistry, School of Life Sciences, Federal University of Technology, P.M.B. 704, Akure 340252, Nigeria
- State Key Laboratory of Animal Nutrition, Key Laboratory of Animal Genetic Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academic of Agricultural Sciences, Beijing 100193, China
| | - Isaac A Olopoda
- Enzyme and Microbial Technology Unit, Department of Biochemistry, School of Life Sciences, Federal University of Technology, P.M.B. 704, Akure 340252, Nigeria
| | - Festus O Igbe
- Enzyme and Microbial Technology Unit, Department of Biochemistry, School of Life Sciences, Federal University of Technology, P.M.B. 704, Akure 340252, Nigeria
| | - Funmillayo M Ojo
- Enzyme and Microbial Technology Unit, Department of Biochemistry, School of Life Sciences, Federal University of Technology, P.M.B. 704, Akure 340252, Nigeria
| | - David M Sanni
- Enzyme and Microbial Technology Unit, Department of Biochemistry, School of Life Sciences, Federal University of Technology, P.M.B. 704, Akure 340252, Nigeria
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2
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Kamble A, Singh R, Singh H. Structural and Functional Characterization of Obesumbacterium proteus Phytase: A Comprehensive In-Silico Study. Mol Biotechnol 2024:10.1007/s12033-024-01069-x. [PMID: 38393631 DOI: 10.1007/s12033-024-01069-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 01/09/2024] [Indexed: 02/25/2024]
Abstract
Phytate, also known as myoinositol hexakisphosphate, exhibits anti-nutritional properties and possesses a negative environmental impact. Phytase enzymes break down phytate, showing potential in various industries, necessitating thorough biochemical and computational characterizations. The present study focuses on Obesumbacterium proteus phytase (OPP), indicating its similarities with known phytases and its potential through computational analyses. Structure, functional, and docking results shed light on OPP's features, structural stability, strong and stable interaction, and dynamic conformation, with flexible sidechains that could adapt to different temperatures or specific functions. Root Mean Square fluctuation (RMSF) highlighted fluctuating regions in OPP, indicating potential sites for stability enhancement through mutagenesis. The systematic approach developed here could aid in enhancing enzyme properties via a rational engineering approach. Computational analysis expedites enzyme discovery and engineering, complementing the traditional biochemical methods to accelerate the quest for superior enzymes for industrial applications.
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Affiliation(s)
- Asmita Kamble
- Department of Biological Sciences, Sunandan Divatia School of Science, NMIMS Deemed to be University, Vile Parle (W), Mumbai, Maharashtra, India
| | - Rajkumar Singh
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Station 19, Lausanne, Switzerland
- Division of Physiological Chemistry II, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, 17177, Stockholm, Sweden
| | - Harinder Singh
- Department of Biological Sciences, Sunandan Divatia School of Science, NMIMS Deemed to be University, Vile Parle (W), Mumbai, Maharashtra, India.
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3
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Zhao T, Yong X, Zhao Z, Dolce V, Li Y, Curcio R. Research status of Bacillus phytase. 3 Biotech 2021; 11:415. [PMID: 34485008 DOI: 10.1007/s13205-021-02964-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/27/2021] [Indexed: 10/20/2022] Open
Abstract
Phytic acid is abundant in seeds, roots and stems of plants, it acts as an anti-nutrient in food and feed industry, since it affects the absorption of nutrients by humans and monogastric animals. Furthermore, phosphorus produced through its decomposition by microorganisms can cause environmental pollution. Phytase degrades phytic acid generating precursors of inositol that can be used in clinical practice; in addition, phytase treatment can minimize the anti-nutritional effect of phytic acid. The use of phytase synthesized from Bacillus is more advantageous due to its high activity. Additionally, its good heat resistance under neutral conditions greatly fills the gap of commercial utilization of acid phytase. In this review, we summarize the latest research results on Bacillus phytase, including its physiological and biochemical characteristics, molecular structure information, calcium effects on its catalytic activity and stability, its catalytic mechanism and molecular modification.
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Affiliation(s)
- Ting Zhao
- College of Life Science and Technology, Xinjiang University, Urumqi, China
- National Facility for Protein Science in Shanghai, Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, China
| | - Xihao Yong
- College of Life Science and Technology, Xinjiang University, Urumqi, China
- Faculty of Bioengineering, Sichuan University of Science and Engineering, Zigong, People's Republic of China
| | - Ziming Zhao
- Faculty of Bioengineering, Sichuan University of Science and Engineering, Zigong, People's Republic of China
| | - Vincenza Dolce
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende, Italy
| | - Yuan Li
- College of Life Science and Technology, Xinjiang University, Urumqi, China
- Department of Bioscience, Biotechnology and Biopharmaceutics, University of Bari, Bari, Italy
| | - Rosita Curcio
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende, Italy
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4
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Wan W, Qin Y, Wu H, Zuo W, He H, Tan J, Wang Y, He D. Isolation and Characterization of Phosphorus Solubilizing Bacteria With Multiple Phosphorus Sources Utilizing Capability and Their Potential for Lead Immobilization in Soil. Front Microbiol 2020; 11:752. [PMID: 32390988 PMCID: PMC7190802 DOI: 10.3389/fmicb.2020.00752] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 03/30/2020] [Indexed: 11/13/2022] Open
Abstract
Phosphorus solubilizing bacteria (PSB) can promote the level of plant-absorbable phosphorus (P) in agro-ecosystems. However, little attention has been paid to PSB harboring abilities in utilizing multiple phosphorus sources and their potentials for heavy metal immobilization. In this study, we applied the strategy of stepwise acclimation by using Ca3(PO4)2, phytate, FePO4, and AlPO4 as sole P source. We gained 18 PSB possessing abilities of multiple P sources utilization, and these bacteria belonged to eight genera (Acinetobacter, Pseudomonas, Massilia, Bacillus, Arthrobacter, Stenotrophomonas, Ochrobactrum, and Cupriavidus), and clustered to two apparent parts: Gram-positive bacteria and Gram-negative bacteria. The isolate of Acinetobacter pittii gp-1 presented good performance for utilizing Ca3(PO4)2, FePO4, AlPO4, and phytate, with corresponding P solubilizing levels were 250.77, 46.10, 81.99, and 7.91 mg/L PO43–-P, respectively. The PSB A. pittii gp-1 exhibited good performance for solubilizing tricalcium phosphate in soil incubation experiments, with the highest values of water soluble P and available P were 0.80 and 1.64 mg/L, respectively. Additionally, the addition of A. pittii gp-1 could promote the immobilization of lead (Pb), and the highest Pb immobilization efficiency reached 23%. Simultaneously, we found the increases in abundances of both alkaline phosphatase gene (phoD) and β-propeller phytase gene (bpp) in strain gp-1 added soils. Besides, we observed the expression up-regulation of both pyrroloquinoline quinone gene (pqq) and polyphosphate kinases gene (ppk), with the highest relative expression levels of 18.18 and 5.23, respectively. We also found the polyphosphate particles using granule staining. To our knowledge, our findings first suggest that the solubilizing of tricalcium phosphate by phosphorus solubilizing bacterium belonging to Acinetobacter is coupled with the synthesis of polyphosphate. Taken together, A. pittii gp-1 could be a good candidate in improving soil fertility and quality.
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Affiliation(s)
- Wenjie Wan
- College of Life Science, South-Central University for Nationalities, Wuhan, China.,State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China
| | - Yin Qin
- College of Life Science, South-Central University for Nationalities, Wuhan, China
| | - Huiqin Wu
- College of Life Science, South-Central University for Nationalities, Wuhan, China
| | - Wenlong Zuo
- College of Life Science, South-Central University for Nationalities, Wuhan, China
| | - Huangmei He
- College of Life Science, South-Central University for Nationalities, Wuhan, China
| | - Jiadan Tan
- College of Life Science, South-Central University for Nationalities, Wuhan, China
| | - Yi Wang
- College of Life Science, South-Central University for Nationalities, Wuhan, China
| | - Donglan He
- College of Life Science, South-Central University for Nationalities, Wuhan, China
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5
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Hou X, Shen Z, Li N, Kong X, Sheng K, Wang J, Wang Y. A novel fungal beta-propeller phytase from nematophagous Arthrobotrys oligospora: characterization and potential application in phosphorus and mineral release for feed processing. Microb Cell Fact 2020; 19:84. [PMID: 32252770 PMCID: PMC7137328 DOI: 10.1186/s12934-020-01346-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 04/02/2020] [Indexed: 01/08/2023] Open
Abstract
Phytases are widely utilized in feed industry to increase the utilization of phosphorus, minerals, and amino acids for improvement of animal and human nutrition. At present, all known β-propeller phytases (BPP) have been generated from bacteria, particularly Bacillus. In this work we report for the first time a new fungal-derived BPP phytase. We identified a phytase highly differentially expressed only in the parasitic stage of a nematophagous fungus, Arhtrobotrys oliogospora, during the development of the 3D traps. We found that this phytase was homologous to the known bacterial BPP phytase, thus we referred the new phytase to Aophytase. The heterologous expression of codon-optimized Aophytase gene in Pichia pastoris was successfully investigated to yield recombinant Aophytase (r-Aophytase) with high specific enzyme activity of 74.71 U/mg, much higher than those of recombinant BPP phytases derived bacteria. The kinetic parameters of the r-Aophytase, the optimum pH and temperature, as well as the effects of surfactant, EDTA and different ions on its enzyme activity were further investigated. The potential utilization of r-Aophytase in feed processing was finally explored. We found that the optimal pH value was about 7.5, and the optimal temperature was 50 °C.; r-Aophytase significantly increased the release of inorganic phosphorus from soybean meal, and improved the release of soluble minerals from the durum wheat flour and finger millet flour. The findings indicate its potential utilization in the feed processing to ameliorate nutritional value of cereals and animal feed in the future.
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Affiliation(s)
- Xianjuan Hou
- School of Life Sciences, Anhui University, Hefei, 230601, Anhui, China.,Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei, 230601, Anhui, China.,Anhui Key Laboratory of Modern Biomanufacturing, Hefei, 230601, Anhui, China
| | - Zhen Shen
- School of Life Sciences, Anhui University, Hefei, 230601, Anhui, China.,Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei, 230601, Anhui, China.,Anhui Key Laboratory of Modern Biomanufacturing, Hefei, 230601, Anhui, China
| | - Na Li
- School of Life Sciences, Anhui University, Hefei, 230601, Anhui, China.,Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei, 230601, Anhui, China.,Anhui Key Laboratory of Modern Biomanufacturing, Hefei, 230601, Anhui, China
| | - Xiaowei Kong
- School of Life Sciences, Anhui University, Hefei, 230601, Anhui, China.,Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei, 230601, Anhui, China
| | - Kangliang Sheng
- School of Life Sciences, Anhui University, Hefei, 230601, Anhui, China.,Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei, 230601, Anhui, China
| | - Jingmin Wang
- School of Life Sciences, Anhui University, Hefei, 230601, Anhui, China.,Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei, 230601, Anhui, China
| | - Yongzhong Wang
- School of Life Sciences, Anhui University, Hefei, 230601, Anhui, China. .,Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei, 230601, Anhui, China. .,Anhui Key Laboratory of Modern Biomanufacturing, Hefei, 230601, Anhui, China. .,Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, Anhui, China.
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6
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Körfer G, Novoa C, Kern J, Balla E, Grütering C, Davari MD, Martinez R, Vojcic L, Schwaneberg U. Directed evolution of an acid Yersinia mollaretii phytase for broadened activity at neutral pH. Appl Microbiol Biotechnol 2018; 102:9607-9620. [DOI: 10.1007/s00253-018-9308-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 08/05/2018] [Accepted: 08/06/2018] [Indexed: 01/25/2023]
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7
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Jain J, Kumar A, Singh D, Singh B. Purification and kinetics of a protease-resistant, neutral, and thermostable phytase from Bacillus subtilis subsp. subtilis JJBS250 ameliorating food nutrition. Prep Biochem Biotechnol 2018; 48:718-724. [DOI: 10.1080/10826068.2018.1487848] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Jinender Jain
- Department of Microbiology, Laboratory of Bioprocess Technology, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Anil Kumar
- Department of Botany, Pt. Neki Ram Sharma Government College, Rohtak, Haryana, India
| | - Davender Singh
- Department of Physics, RPS Degree College, Balana, Haryana, India
| | - Bijender Singh
- Department of Microbiology, Laboratory of Bioprocess Technology, Maharshi Dayanand University, Rohtak, Haryana, India
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8
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Reddy CS, Kim SC, Kaul T. Genetically modified phytase crops role in sustainable plant and animal nutrition and ecological development: a review. 3 Biotech 2017; 7:195. [PMID: 28667635 PMCID: PMC5493567 DOI: 10.1007/s13205-017-0797-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 04/06/2017] [Indexed: 10/19/2022] Open
Abstract
Globally, plant-derivatives especially cereals and legumes are the major staple food sources for animals. The seeds of these crops comprise of phytic acid, the major repository form of the phosphorus, which is not digestible by simple-stomached animals. However, it is the most important factor responsible for impeding the absorption of minerals by plants that eventually results in less use of fertilizers that ultimately cause eutrophication in water bodies. Although abundant phosphorus (P) exists in the soils, plants cannot absorb most of the P due to its conversion to unavailable forms. Hence, additional P supplementation is indispensable to the soil to promote crop yields which not only leads to soil infertility but also rapid depletion of non-renewable P reservoirs. Phytase/phosphatase enzyme is essential to liberate P from soils by plants and from seeds by monogastric animals. Phytases are kind of phosphatases which can hydrolyse the indigestible phytate into inorganic Phosphate (Pi) and lower myo-inositol. There are several approaches to mitigate the problems associated with phytate indigestibility. One of the best possible solutions is engineering crops to produce heterologous phytase to improve P utilization by monogastric animals, plant nutrition and sustainable ecological developments. Previously published reviews were focused on either soil phytate or seed-phytate, related issues, but this review will address both the problems as well as phytate related ecological problems. This review summarizes the overall view of engineered phytase crops and their role in sustainable agriculture, animal nutrition and ecological development.
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Affiliation(s)
- Chinreddy Subramanyam Reddy
- Medicinal Crops Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Eumseong, 27709, Korea.
- Nutritional Improvement of Crops, International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India.
| | - Seong-Cheol Kim
- Medicinal Crops Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Eumseong, 27709, Korea
| | - Tanushri Kaul
- Nutritional Improvement of Crops, International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India
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9
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Molecular advancements in the development of thermostable phytases. Appl Microbiol Biotechnol 2017; 101:2677-2689. [PMID: 28233043 DOI: 10.1007/s00253-017-8195-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Revised: 02/12/2017] [Accepted: 02/13/2017] [Indexed: 12/20/2022]
Abstract
Since the discovery of phytic acid in 1903 and phytase in 1907, extensive research has been carried out in the field of phytases, the phytic acid degradatory enzymes. Apart from forming backbone enzyme in the multimillion dollar-based feed industry, phytases extend a multifaceted role in animal nutrition, industries, human physiology, and agriculture. The utilization of phytases in industries is not effectively achieved most often due to the loss of its activity at high temperatures. The growing demand of thermostable phytases with high residual activity could be addressed by the combinatorial use of efficient phytase sources, protein engineering techniques, heterologous expression hosts, or thermoprotective coatings. The progress in phytase research can contribute to its economized production with a simultaneous reduction of various environmental problems such as eutrophication, greenhouse gas emission, and global warming. In the current review, we address the recent advances in the field of various natural as well as recombinant thermotolerant phytases, their significance, and the factors contributing to their thermotolerance.
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10
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Kumar V, Yadav AN, Verma P, Sangwan P, Saxena A, Kumar K, Singh B. β-Propeller phytases: Diversity, catalytic attributes, current developments and potential biotechnological applications. Int J Biol Macromol 2017; 98:595-609. [PMID: 28174082 DOI: 10.1016/j.ijbiomac.2017.01.134] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 01/26/2017] [Accepted: 01/31/2017] [Indexed: 02/02/2023]
Abstract
Phytases are phosphatases which stepwise remove phosphates from phytic acid or its salts. β-Propeller phytase (BPPhy) belongs to a special class of microbial phytases that is regarded as most diverse, isolated and characterized from different microbes, mainly from Bacillus spp. BPPhy class is unique for its Ca2+-dependent catalytic activity, strict substrate specificity, active at neutral to alkaline pH and high thermostability. Numerous sequence and structure based studies have revealed unique attributes and catalytic properties of this class, as compared to other classes of phytases. Recent studies including cloning and expression and genetic engineering approaches have led to improvements in BPPhy which provide an opportunity for extended utilization of this class of phytases in improving animal nutrition, human health, plant growth promotion, and environmental protection, etc. This review describes the sources and diversity of BPPhy genes, biochemical properties, Ca2+ dependence, current developments in structural elucidation, heterogeneous expression and catalytic improvements, and multifarious applications of BPPhy.
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Affiliation(s)
- Vinod Kumar
- Department of Biotechnology, Akal College of Agriculture, Eternal University, Baru Sahib, Sirmour 173101, India.
| | - Ajar Nath Yadav
- Department of Biotechnology, Akal College of Agriculture, Eternal University, Baru Sahib, Sirmour 173101, India
| | - Priyanka Verma
- Department of Microbiology, Akal College of Basic Sciences, Eternal University, Baru Sahib, Sirmour 173101, India
| | - Punesh Sangwan
- Department of Biochemistry, Akal College of Basic Sciences, Eternal University, Baru Sahib, Sirmour 173101, India
| | - Abhishake Saxena
- Department of Biotechnology, Akal College of Agriculture, Eternal University, Baru Sahib, Sirmour 173101, India
| | - Krishan Kumar
- Department of Food Technology, Akal College of Agriculture, Eternal University, Baru Sahib, Sirmour 173101, India
| | - Bijender Singh
- Department of Microbiology, Maharshi Dayanand University, Rohtak 124001, India
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11
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Anjos L, Morgado I, Guerreiro M, Cardoso JCR, Melo EP, Power DM. Cartilage acidic protein 1, a new member of the beta-propeller protein family with amyloid propensity. Proteins 2016; 85:242-255. [DOI: 10.1002/prot.25210] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 11/06/2016] [Accepted: 11/09/2016] [Indexed: 12/22/2022]
Affiliation(s)
- Liliana Anjos
- Comparative Endocrinology and Integrative Biology Group (CEIB), Centro de Ciencias do Mar (CCMAR), University of Algarve; Campus de Gambelas Faro 8005-139 Portugal
| | - Isabel Morgado
- Comparative Endocrinology and Integrative Biology Group (CEIB), Centro de Ciencias do Mar (CCMAR), University of Algarve; Campus de Gambelas Faro 8005-139 Portugal
| | - Marta Guerreiro
- Comparative Endocrinology and Integrative Biology Group (CEIB), Centro de Ciencias do Mar (CCMAR), University of Algarve; Campus de Gambelas Faro 8005-139 Portugal
| | - João C. R. Cardoso
- Comparative Endocrinology and Integrative Biology Group (CEIB), Centro de Ciencias do Mar (CCMAR), University of Algarve; Campus de Gambelas Faro 8005-139 Portugal
| | - Eduardo P. Melo
- Campus de Gambelas, Center for Biomedical Research, University of Algarve; Faro 8005-139 Portugal
| | - Deborah M. Power
- Comparative Endocrinology and Integrative Biology Group (CEIB), Centro de Ciencias do Mar (CCMAR), University of Algarve; Campus de Gambelas Faro 8005-139 Portugal
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12
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Tan H, Wu X, Xie L, Huang Z, Peng W, Gan B. A Novel Phytase Derived from an Acidic Peat-Soil Microbiome Showing High Stability under Acidic Plus Pepsin Conditions. J Mol Microbiol Biotechnol 2016; 26:291-301. [DOI: 10.1159/000446567] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Accepted: 05/02/2016] [Indexed: 11/19/2022] Open
Abstract
Four novel phytases of the histidine acid phosphatase family were identified in two publicly available metagenomic datasets of an acidic peat-soil microbiome in northeastern Bavaria, Germany. These enzymes have low similarity to all the reported phytases. They were overexpressed in <i>Escherichia coli</i> and purified. Catalytic efficacy in simulated gastric fluid was measured and compared among the four candidates. The phytase named rPhyPt4 was selected for its high activity. It is the first phytase identified from unculturable Acidobacteria. The phytase showed a longer half-life than all the gastric-stable phytases that have been reported to date, suggesting a strong resistance to low pH and pepsin. A wide pH profile was observed between pH 1.5 and 5.0. At the optimum pH (2.5) the activity was 2,790 μmol/min/mg at the physiological temperature of 37°C and 3,989 μmol/min/mg at the optimum temperature of 60°C. Due to the competent activity level as well as the high gastric stability, the phytase could be a potential candidate for practical use in livestock and poultry feeding
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13
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Chanderman A, Puri AK, Permaul K, Singh S. Production, characteristics and applications of phytase from a rhizosphere isolated Enterobacter sp. ACSS. Bioprocess Biosyst Eng 2016; 39:1577-87. [DOI: 10.1007/s00449-016-1632-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 05/23/2016] [Indexed: 11/30/2022]
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14
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15
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Tan H, Wu X, Xie L, Huang Z, Peng W, Gan B. Identification and characterization of a mesophilic phytase highly resilient to high-temperatures from a fungus-garden associated metagenome. Appl Microbiol Biotechnol 2015; 100:2225-41. [PMID: 26536874 DOI: 10.1007/s00253-015-7097-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 10/06/2015] [Accepted: 10/13/2015] [Indexed: 11/30/2022]
Abstract
Phytases are enzymes degrading phytic acid and thereby releasing inorganic phosphate. While the phytases reported to date are majorly from culturable microorganisms, the fast-growing quantity of publicly available metagenomic data generated in the last decade has enabled bioinformatic mining of phytases in numerous data mines derived from a variety of ecosystems throughout the world. In this study, we are interested in the histidine acid phosphatase (HAP) family phytases present in insect-cultivated fungus gardens. Using bioinformatic approaches, 11 putative HAP phytase genes were initially screened from 18 publicly available metagenomes of fungus gardens and were further overexpressed in Escherichia coli. One phytase from a south pine beetle fungus garden showed the highest activity and was then chosen for further study. Biochemical characterization showed that the phytase is mesophilic but possesses strong ability to withstand high temperatures. To our knowledge, it has the longest half-life time at 100 °C (27 min) and at 80 °C (2.1 h) as compared to all the thermostable phytases publicly reported to date. After 100 °C incubation for 15 min, more than 93 % of the activity was retained. The activity was 3102 μmol P/min/mg at 37 °C and 4135 μmol P/min/mg at 52.5 °C, which is higher than all the known thermostable phytases. For the high activity level demonstrated at mesophilic temperatures as well as the high resilience to high temperatures, the phytase might be promising for potential application as an additive enzyme in animal feed.
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Affiliation(s)
- Hao Tan
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experiment Station of Southwestern Region for Agricultural Microbial Resource Utilization, Ministry of Agriculture, Chengdu, China
| | - Xiang Wu
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experiment Station of Southwestern Region for Agricultural Microbial Resource Utilization, Ministry of Agriculture, Chengdu, China
| | - Liyuan Xie
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experiment Station of Southwestern Region for Agricultural Microbial Resource Utilization, Ministry of Agriculture, Chengdu, China
| | - Zhongqian Huang
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experiment Station of Southwestern Region for Agricultural Microbial Resource Utilization, Ministry of Agriculture, Chengdu, China
| | - Weihong Peng
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experiment Station of Southwestern Region for Agricultural Microbial Resource Utilization, Ministry of Agriculture, Chengdu, China
| | - Bingcheng Gan
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China. .,Scientific Observing and Experiment Station of Southwestern Region for Agricultural Microbial Resource Utilization, Ministry of Agriculture, Chengdu, China.
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