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Gadallah EE, El-Borai AM, El-Aassar SA, Beltagy EA. Purification, characterization, immobilization and applications of an enzybiotic β-1,3-1,4-glucanase produced from halotolerant marine Halomonas meridiana ES021. World J Microbiol Biotechnol 2023; 39:89. [PMID: 36740637 PMCID: PMC9899757 DOI: 10.1007/s11274-023-03527-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 01/17/2023] [Indexed: 02/07/2023]
Abstract
Extracellular β-1,3-1,4-glucanase-producing strain Halomonas meridiana ES021 was isolated from Gabal El-Zeit off shore, Red Sea, Egypt. The Extracellular enzyme was partially purified by precipitation with 75% acetone followed by anion exchange chromatography on DEAE-cellulose, where a single protein band was determined with molecular mass of approximately 72 kDa. The Km value was 0.62 mg β-1,3-1,4-glucan/mL and Vmax value was 7936 U/mg protein. The maximum activity for the purified enzyme was observed at 40 °C, pH 5.0, and after 10 min of the reaction. β-1,3-1,4-glucanase showed strong antibacterial effect against Bacillus subtilis, Streptococcus agalactiae and Vibrio damsela. It also showed antifungal effect against Penicillium sp. followed by Aspergillus niger. No toxicity was observed when tested on Artemia salina. Semi-purified β-1,3-1,4-glucanase was noticed to be effective in clarification of different juices at different pH values and different time intervals. The maximum clarification yields were 51.61% and 66.67% on mango juice at 40 °C and pH 5.3 for 2 and 4 h, respectively. To our knowledge, this is the first report of β-1,3-1,4-glucanase enzyme from halotolerant Halomonas species.
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Affiliation(s)
- Eman E Gadallah
- Botany and Microbiology Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
| | - Aliaa M El-Borai
- Botany and Microbiology Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Samy A El-Aassar
- Botany and Microbiology Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Ehab A Beltagy
- National Institute of Oceanography and Fisheries (NIOF), Cairo, Egypt
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2
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Heterologous expression and characterization of two novel glucanases derived from sheep rumen microbiota. World J Microbiol Biotechnol 2022; 38:87. [DOI: 10.1007/s11274-022-03269-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 03/22/2022] [Indexed: 11/27/2022]
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3
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Naseem MU, Tajti G, Gaspar A, Szanto TG, Borrego J, Panyi G. Optimization of Pichia pastoris Expression System for High-Level Production of Margatoxin. Front Pharmacol 2021; 12:733610. [PMID: 34658872 PMCID: PMC8511391 DOI: 10.3389/fphar.2021.733610] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/30/2021] [Indexed: 11/16/2022] Open
Abstract
Margatoxin (MgTx) is a high-affinity blocker of voltage-gated potassium (Kv) channels. It inhibits Kv1.1–Kv1.3 ion channels in picomolar concentrations. This toxin is widely used to study physiological function of Kv ion channels in various cell types, including immune cells. Isolation of native MgTx in large quantities from scorpion venom is not affordable. Chemical synthesis and recombinant production in Escherichia coli need in vitro oxidative refolding for proper disulfide bond formation, resulting in a very low yield of peptide production. The Pichia pastoris expression system offers an economical approach to overcome all these limitations and gives a higher yield of correctly refolded recombinant peptides. In this study, improved heterologous expression of recombinant MgTx (rMgTx) in P. pastoris was obtained by using preferential codons, selecting the hyper-resistant clone against Zeocin, and optimizing the culturing conditions. About 36 ± 4 mg/L of >98% pure His-tagged rMgTx (TrMgTx) was produced, which is a threefold higher yield than has been previously reported. Proteolytic digestion of TrMgTx with factor Xa generated untagged rMgTx (UrMgTx). Both TrMgTx and UrMgTx blocked the Kv1.2 and Kv1.3 currents (patch-clamp) (Kd for Kv1.2 were 64 and 14 pM, and for Kv1.3, 86 and 50 pM, respectively) with comparable potency to the native MgTx. The analysis of the binding kinetics showed that TrMgTx had a lower association rate than UrMgTx for both Kv1.2 and Kv1.3. The dissociation rate of both the analogues was the same for Kv1.3. However, in the case of Kv1.2, TrMgTx showed a much higher dissociation rate with full recovery of the block than UrMgTx. Moreover, in a biological functional assay, both peptides significantly downregulated the expression of early activation markers IL2R and CD40L in activated CD4+ TEM lymphocytes whose activation was Kv1.3 dependent. In conclusion, the authors report that the Pichia expression system is a powerful method to produce disulfide-rich peptides, the overexpression of which could be enhanced noticeably through optimization strategies, making it more cost-effective. Since the presence of the His-tag on rMgTx only mildly altered the block equilibrium and binding kinetics, recombinant toxins could be used in ion channel research without removing the tag and could thus reduce the cost and time demand for toxin production.
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Affiliation(s)
- Muhammad Umair Naseem
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Gabor Tajti
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Attila Gaspar
- Department of Inorganic and Analytical Chemistry, Faculty of Science and Technology, Institute of Chemistry, University of Debrecen, Debrecen, Hungary
| | - Tibor G Szanto
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Jesús Borrego
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Gyorgy Panyi
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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Tkachenko AA, Kalinina AN, Borshchevskaya LN, Sineoky SP, Gordeeva TL. A novel phytase from Citrobactergillenii: characterization and expression in Pichia pastoris (Komagataella pastoris). FEMS Microbiol Lett 2021; 368:6043202. [PMID: 33347540 DOI: 10.1093/femsle/fnaa217] [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: 09/29/2020] [Accepted: 12/17/2020] [Indexed: 11/14/2022] Open
Abstract
The phyCg gene encoding a new phytase from Citrobacter gillenii was optimized, synthesized, cloned and expressed in Pichia pastoris. Analysis of the amino acid sequence of the enzyme showed that it belongs to the histidine acid phosphatase family. The amino acid sequence of the PhyCg phytase has the highest homology (73.49%) with a phytase sequence from Citrobacter braakii. The main characteristics for the purified recombinant phytase were established. The optimum pH and temperature were 4.5 and 50°C, respectively. The specific activity of the enzyme was 1577 U/mg. The Michaelis constant (Km) and the maximum reaction rate (Vmax) for sodium phytate were 0.185 mM and 2185 U/mg, respectively. The enzyme showed the pH and trypsin stability and had a high activity over a wide pH range.
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Affiliation(s)
- Artur A Tkachenko
- NRC «Kurchatov Institute» - GOSNIIGENETIKA, Kurchatov Genomic Center, NRC «Kurchatov Institute», 1-st Dorozhnyy proyezd, 1, Moscow, 117545, Russia
| | - Anna N Kalinina
- NRC "Kurchatov Institute", Akademika Kurchatova pl., 1, Moscow, 123182, Russia
| | | | - Sergey P Sineoky
- NRC "Kurchatov Institute", Akademika Kurchatova pl., 1, Moscow, 123182, Russia
| | - Tatiana L Gordeeva
- NRC «Kurchatov Institute» - GOSNIIGENETIKA, Kurchatov Genomic Center, NRC «Kurchatov Institute», 1-st Dorozhnyy proyezd, 1, Moscow, 117545, Russia.,NRC "Kurchatov Institute", Akademika Kurchatova pl., 1, Moscow, 123182, Russia
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5
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Lu C, Liu C, Sun X, Wan P, Ni J, Wang L, Ji Y, Guo Y, Lu S. Bioinformatics analysis, codon optimization and expression of ovine pregnancy associated Glycoprotein-7 in HEK293 cells. Theriogenology 2021; 172:27-35. [PMID: 34091203 DOI: 10.1016/j.theriogenology.2021.05.027] [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: 02/01/2021] [Revised: 05/23/2021] [Accepted: 05/24/2021] [Indexed: 11/15/2022]
Abstract
Pregnancy-associated glycoproteins (PAGs) are widely used as powerful markers for early pregnancy diagnosis in livestock. To improve expression efficiency of recombinant ovine pregnancy-associated glycoprotein-7 (ovPAG-7) in HEK293 cells, the codon usage bias of the ovPAG-7 gene was analyzed using bioinformatic approaches, after which the DNA sequence encoding ovPAG-7 was designed, synthesized, and expressed in HEK293. The structure and function of ovPAG-7 were predicted using bioinformatics software and online databases. The results showed that the effective number of codons (NEC) of the ovPAG-7 gene was 56.82, indicating that the ovPAG-7 gene was weakly biased. ovPAG-7 gene had 26 biased codons (relative synonymous codon usage (RSCU) > 1), 15 of which were biased towards G/C at the third position. After codon optimization, the codon adaptation index of the ovPAG-7 gene increased from 0.74 to 0.96, and its GC content changed from 46.6 to 58.6%. The amino acid sequence encoded by the optimized gene was entirely consistent with those published in Gen Bank. Western blot analysis indicated that the recombinant ovPAG-7 protein with a relative molecular mass of 48 kDa was successfully expressed in HEK293 cells. The bioinformatics prediction results showed that ovPAG-7 protein contained 3 N-glycosylation sites, 13 B-cell epitopes, and a signal peptide consisting of 15 amino acids at the N terminus. The secondary structure of the ovPAG-7 protein was predicted to consist of random coils (46.85%), extended strands (32.05%), α-helices (16.16%), and β-turns (4.93%). This study provided a tool for the screening of monoclonal antibodies and functional research on ovPAG-7.
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Affiliation(s)
- Chunxia Lu
- Life Science and Technology Institute, Yangtze Normal University, Chongqing 408100, PR China
| | - Changbin Liu
- Institute of Animal Husbandry and Veterinary Science, Xinjiang Academy of Agriculture and Reclamation Science, Shihezi, 832000, PR China.
| | - Xieping Sun
- Life Science and Technology Institute, Yangtze Normal University, Chongqing 408100, PR China
| | - Pengcheng Wan
- Institute of Animal Husbandry and Veterinary Science, Xinjiang Academy of Agriculture and Reclamation Science, Shihezi, 832000, PR China
| | - Jianhong Ni
- Institute of Animal Husbandry and Veterinary Science, Xinjiang Academy of Agriculture and Reclamation Science, Shihezi, 832000, PR China
| | - Limin Wang
- Institute of Animal Husbandry and Veterinary Science, Xinjiang Academy of Agriculture and Reclamation Science, Shihezi, 832000, PR China
| | - Yong Ji
- Analysis and Testing Center, Xinjiang Academy of Agriculture and Reclamation Science, Shihezi, 832000, PR China
| | - Yanhua Guo
- Institute of Animal Husbandry and Veterinary Science, Xinjiang Academy of Agriculture and Reclamation Science, Shihezi, 832000, PR China
| | - Shouliang Lu
- Institute of Animal Husbandry and Veterinary Science, Xinjiang Academy of Agriculture and Reclamation Science, Shihezi, 832000, PR China
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6
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Borshchevskaya LN, Gordeeva TL, Kalinina AN, Serkina AV, Fedorov AS, Sineoky SP. Expression of the β-Glucanase Gene from Paenibacillus jamilae Bg1 in Pichia pastoris and Characteristics of the Recombinant Enzyme. APPL BIOCHEM MICRO+ 2020. [DOI: 10.1134/s0003683820080025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Gordeeva TL, Borshchevskaya LN, Kalinina AN, Bulushova NV, Syneoky SP, Voronin SP, Kashirskaya MD. New Recombinant Phytase from Kosakoniasacchari: Characteristics and Biotechnological Potential. APPL BIOCHEM MICRO+ 2020. [DOI: 10.1134/s0003683820070042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Liu X, Jiang Z, Ma S, Yan Q, Chen Z, Liu H. High-level production and characterization of a novel β-1,3-1,4-glucanase from Aspergillus awamori and its potential application in the brewing industry. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.01.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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9
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Gordeeva TL, Borshchevskaya LN, Kalinina AN, Sineoky SP, Voronin SP, Kashirskaya MD. Expression and Characterization of Phytase from Obesumbacterium proteus in Pichia pastoris. APPL BIOCHEM MICRO+ 2019. [DOI: 10.1134/s0003683819070032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Faraji H, Ramezani M, Mashkani B, Sadeghnia HR, Benhangi HM, Hosseini Teshnizi S, Soltani F. Comparison of expression optimization of new derivative of staphylokinase (SAK-2RGD-TTI) with the rSAK. Biotechnol Prog 2019; 35:e2819. [PMID: 30972956 DOI: 10.1002/btpr.2819] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 01/07/2019] [Accepted: 03/27/2019] [Indexed: 11/06/2022]
Abstract
Staphylokinase (SAK) is a promising thrombolytic agent for the treatment of patients suffering from blood-clotting disorders. To increase the potency of SAK and to minimize vessel reocclusion, a new construct bearing SAK motif fused to tsetse thrombin inhibitor (TTI) via a 20-amino acid linker with 2 RGD (2 × arginine-glycine-aspartic acid inhibiting platelet aggregation via attachment to integrin receptors of platelet) was codon optimized and expressed comparatively in Pichia pastoris GS115 as a Mut+ strain and KM71H as a Muts strain. Fusion protein was optimized in terms of best expression condition and fibrinolytic activity and compared with the rSAK. Expression level of the designed construct reached up to 175 mg/L of the culture medium after 72-hr stimulation with 2.5% methanol and remained steady for 3-4 days. The highest expression was obtained at the range of 2-3% methanol. The SAK-2RGD-TT (relative activity >82%) was more active at 25-37 °C than rSAK (relative activity of 93%). Further, it showed relative activity >80% at pH ranges of 7-9. Western blot analysis showed two bands of nearly 27 and 24 kDa at ratio of 5 to 3, respectively. The specific fibrinolytic activity of the SAK-2RGD-TTI was measured as 8,269 U/mg, and 19,616 U/mg for the nonpurified and purified proteins, respectively. Deglycosylation by using tunicamycin in culture medium resulted in higher fibrinolytic activity of SAK-2RGD-TTI (2.2 fold). Consequently, compared to the rSAK, at the same equimolar proportion, addition of RGD and TTI fragments could increase fibrinolytic activity. Also, P. pastoris can be considered as an efficient host for overexpression of the soluble SAK-2RGD-TTI with high activity without requiring a complicated purification procedure.
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Affiliation(s)
- Habibollah Faraji
- Department of Laboratory Sciences, Faculty of Para-Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Mohammad Ramezani
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Baratali Mashkani
- Department of Medical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamid R Sadeghnia
- Neurocognitive Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of New Sciences and Technology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamid M Benhangi
- Department of Toxicology, Islamic Azad University, Shahreza, Isfahan, Iran
| | - Saeed Hosseini Teshnizi
- Department of Biostatistics, School of Medicine, Shiraz University of Medical Science, Shiraz, Iran
| | - Fatemeh Soltani
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
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11
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Yang J, Deng L, Zhao C, Fang H. Heterologous expression of Neurospora crassa cbh1 gene in Pichia pastoris resulted in production of a neutral cellobiohydrolase I. Biotechnol Prog 2019; 35:e2795. [PMID: 30816014 DOI: 10.1002/btpr.2795] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 01/14/2019] [Accepted: 02/20/2019] [Indexed: 11/10/2022]
Abstract
The high production cost of cellulase is one of the limitations that hinder the commercialization of lignocellulose-based biorefineries. As one of the important cellulases, Neurospora crassa cellulase is not so intensively investigated as T. reesei cellulase. In this study, the cbh1gene (NCU07340) cloned from N. crassa was expressed in Pichia pastoris under the control of alcohol oxidase 1 (AOX1) promotor. Six transformants with the highest resistance to G418 were selected by two rounds of transformant screening, among which the most robust producer of the recombinant cellobiohydrolase I (CBHI) has an Avicelase activity of 0.22 U/mL. After fermentation optimization, it was improved to 0.30 U/mL. Interestingly, the optimal temperature and pH of the recombinant CBHI were 60°C and 7.2, respectively, and it was quite stable within the wide ranges of temperature and pH. This work is a good example for the future improvement and optimization of N. crassa cellulase.
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Affiliation(s)
- Jie Yang
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China.,Biomass Energy Center for Arid and Semi-arid Lands, Northwest A&F University, Yangling, Shaanxi, China
| | - Lu Deng
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China.,Biomass Energy Center for Arid and Semi-arid Lands, Northwest A&F University, Yangling, Shaanxi, China
| | - Chen Zhao
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China.,Biomass Energy Center for Arid and Semi-arid Lands, Northwest A&F University, Yangling, Shaanxi, China
| | - Hao Fang
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China.,Biomass Energy Center for Arid and Semi-arid Lands, Northwest A&F University, Yangling, Shaanxi, China
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12
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Borshchevskaya L, Gordeeva T, Sineoky S. Increase in the Production of Endo-1,4-β-Xylanase from Paenibacillus brasilensis in Pichia pastoris. ACTA ACUST UNITED AC 2019. [DOI: 10.21519/0234-2758-2019-35-6-30-38] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A Pichia pastoris yeast strain producing endo-l,4-β-xylanase from Paenibacillus brasilensis with an activity of 54,400 U/mL after 140 h of fermentation in a laboratory fermenter has been obtained. A number of approaches were used to increase the level of the xylanase production in this strain: optimization of the target gene codon composition, multiple integration of the expression cassette into the recipient strain chromosome using the Cre-lox recombination system, and also improving the heterologous protein folding via the overexpression of the HAC1i gene from Pichia pastoris.
xylanase, xylan, Cre-lox system, HAC1p transcriptional activator, multicopy strain, Paenibacillus brasilensis, Pichia pastoris
The work was performed with the financial support of the Ministry of Education and Science of Russia (Unique Project Identifier RFMEFI60717X0180) using the Multipurpose Scientific Installation of «All-Russian Collection of Industrial Microorganisms» National Bio-Resource Center, NRC «Kurchatov Institute» - GosNIIgenetika.
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Affiliation(s)
- L.N. Borshchevskaya
- State Research Institute for Genetics and Selection of Industrial Microorganisms of National Research Center «Kurchatov Institute» (NRC «Kurchatov Institute»-GosNIIgenetika), Moscow, 117545 Russia
| | - T.L. Gordeeva
- State Research Institute for Genetics and Selection of Industrial Microorganisms of National Research Center «Kurchatov Institute» (NRC «Kurchatov Institute»-GosNIIgenetika), Moscow, 117545 Russia
| | - S.P. Sineoky
- State Research Institute for Genetics and Selection of Industrial Microorganisms of National Research Center «Kurchatov Institute» (NRC «Kurchatov Institute»-GosNIIgenetika), Moscow, 117545 Russia
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13
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Chen X, Wang B, Pan L. Heterologous expression and characterization of Penicillium citrinum nuclease P1 in Aspergillus niger and its application in the production of nucleotides. Protein Expr Purif 2018; 156:36-43. [PMID: 30557611 DOI: 10.1016/j.pep.2018.12.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Revised: 12/10/2018] [Accepted: 12/13/2018] [Indexed: 12/15/2022]
Abstract
Nuclease P1 gene (nuc P1) which was cloned from Penicillium citrinum and expressed in A. niger Bdel4 with the low-background extracellular protein. The expression strategy of multi-copy nuc P1 in the A. niger with the linker of 2A peptide was applied to improve the enzyme activity of nuclease P1, the highest activity up to 77.6 U/mL. After Ni-chelate purification, the specific enzyme activity, the optimum temperature and pH were 32.4 U/mg, 65 °C and 5.3 respectively. The recombination nuclease P1 was activated by addition of Mg2+, Zn2+ and Cu2+, and inhibited by addition of Ca2+, Fe2+, Mn2+, Ni2+, Co2+, Mg2+, K+ and EDTA. Furthermore, the enzyme hydrolyses yeast RNA efficiently into 5'- nucleotides. Through enzymolysis, the highest concentration of nucleotides achieved 15.12 mg/mL, and 75U nuclease P1 is suitable amount should be added to the enzymolysis system.
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Affiliation(s)
- Xiaoyi Chen
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong, 510006, China
| | - Bin Wang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong, 510006, China; Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering, Guangzhou, 510006, China
| | - Li Pan
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong, 510006, China; Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering, Guangzhou, 510006, China.
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14
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Improving heterologous expression of porcine follicle-stimulating hormone in Pichia pastoris by integrating molecular strategies and culture condition optimization. Appl Microbiol Biotechnol 2018; 102:8867-8882. [PMID: 30136206 DOI: 10.1007/s00253-018-9260-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 07/14/2018] [Accepted: 07/18/2018] [Indexed: 10/28/2022]
Abstract
Porcine follicle-stimulating hormone (pFSH), comprising α and β subunits, is commonly used to induce superovulation in domestic animals in assisted reproduction technologies; however, the practical application of pFSH is inhibited by the limited efficiency of its production. Recombinant yeast-derived FSH offers a practical alternative; however, the heterologous expression efficiency remains disappointingly low. To improve FSH production in Pichia pastoris, a series of molecular strategies, together with fermentation optimization, were tested in the present study. By comparing clones of the Muts phenotype strain, it was observed that the yield of soluble pFSH increased by approximately 96% in clones of the Mut+ phenotype strain. The protein levels of soluble pFSHβ, which confers biological specificity, increased by approximately 143 and 22% after two kinds of codon optimization strategies, respectively. Moreover, compared with the production of soluble pFSHβ and SUMO-pFSHβ, the production of soluble protein HSA-pFSHβ was significantly improved. Furthermore, the optimum pH and methanol concentration for expressing soluble HSA-pFSH in strain H3-3 were determined as 5.0-6.0 and 1.5-2% in shake-flask, and the yield of soluble HSA-pFSH could reach 40.8 mg/l after purification. In vitro bioactivity assays showed that recombinant HSA-pFSH could efficiently stimulate cAMP synthesis in HEK293 cells expressing porcine FSHR. In conclusion, our results demonstrated that the application of phenotypic selection of aox1 mutants, combined with codon optimization, the choice of fusion partners, and fermentation optimization, considerably increased the yield of pFSH in supernatant of P. pastoris and thus provided a valuable reference for the large-scale recombinant expression of pFSH.
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15
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Sun LH, Qin T, Liu Y, Zhao H, Xia X, Lei X. Cloning, expression, and characterization of a porcine pancreatic α-amylase in Pichia pastoris. ANIMAL NUTRITION (ZHONGGUO XU MU SHOU YI XUE HUI) 2018; 4:234-240. [PMID: 30140765 PMCID: PMC6104570 DOI: 10.1016/j.aninu.2017.11.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 11/24/2017] [Accepted: 11/29/2017] [Indexed: 11/29/2022]
Abstract
Pancreatic α-amylase (α-1, 4-glucan-4-glucanohydrolase, EC.3.2.1.1) plays a primary role in the intestinal digestion of feed starch and is often deficient in weanling pigs. The objective of this study was to clone, express, and characterize porcine pancreatic α-amylase (PPA). The full-length cDNA encoding the PPA was isolated from pig pancreas by RT-PCR and cloned into the pPICZαA vector. After the resultant pPICZαΑ-PPA plasmid was transferred into Pichia pastoris, Ni Sepharose affinity column was used to purify the over-expressed extracellular recombinant PPA protein (rePPA) that contains a His-tag to the C terminus and was characterized against the natural enzyme (α-amylase from porcine pancreas). The rePPA exhibited a molecular mass of approximately 58 kDa and showed optimal temperature (50 °C), optimal pH (7.5), Km (47.8 mg/mL), and Vmax (2,783 U/mg) similar to those of the natural enzyme. The recombinant enzyme was stable at 40 °C but lost 60% to 90% (P < 0.05) after exposure to heating at ≥50 °C for 30 min. The enzyme activity was little affected by Cu2+ or Fe3+, but might be inhibited (40% to 50%) by Zn2+ at concentrations in pig digesta. However, Ca2+ exhibited a dose-dependent stimulation of the enzyme activity. In conclusion, the present study successfully cloned the porcine pancreatic α-amylase gene and over-expressed the gene in P.pastoris as an extracellular, functional enzyme. The biochemical characterization of the over-produced enzyme depicts its potential and future improvement as an animal feed additive.
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Affiliation(s)
- Lv-Hui Sun
- Department of Animal Nutrition and Feed Science, Huazhong Agricultural University, Wuhan 430070, China.,International Center of Future Agriculture for Human Health, Sichuan Agricultural University, Chengdu 611134, China
| | - Tao Qin
- International Center of Future Agriculture for Human Health, Sichuan Agricultural University, Chengdu 611134, China.,Wuhan Chopper Biology Co., LTD, Wuhan 430070, China
| | - Yan Liu
- International Center of Future Agriculture for Human Health, Sichuan Agricultural University, Chengdu 611134, China
| | - Hua Zhao
- International Center of Future Agriculture for Human Health, Sichuan Agricultural University, Chengdu 611134, China
| | - Xinjie Xia
- International Center of Future Agriculture for Human Health, Sichuan Agricultural University, Chengdu 611134, China.,Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
| | - Xingen Lei
- International Center of Future Agriculture for Human Health, Sichuan Agricultural University, Chengdu 611134, China.,Department of Animal Science, Cornell University, Ithaca, NY 14853, USA
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The features that distinguish lichenases from other polysaccharide-hydrolyzing enzymes and the relevance of lichenases for biotechnological applications. Appl Microbiol Biotechnol 2018; 102:3951-3965. [DOI: 10.1007/s00253-018-8904-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 02/23/2018] [Accepted: 02/26/2018] [Indexed: 01/16/2023]
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17
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Niu C, Liu C, Li Y, Zheng F, Wang J, Li Q. Production of a thermostable 1,3-1,4-β-glucanase mutant in Bacillus subtilis WB600 at a high fermentation capacity and its potential application in the brewing industry. Int J Biol Macromol 2018; 107:28-34. [DOI: 10.1016/j.ijbiomac.2017.08.139] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 08/09/2017] [Accepted: 08/25/2017] [Indexed: 12/14/2022]
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18
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Zhang B, Liu Y, Yang H, Yan Q, Yang S, Jiang ZQ, Li S. Biochemical properties and application of a novel β-1,3-1,4-glucanase from Paenibacillus barengoltzii. Food Chem 2017; 234:68-75. [DOI: 10.1016/j.foodchem.2017.04.162] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 03/25/2017] [Accepted: 04/25/2017] [Indexed: 11/30/2022]
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Li Z, Han H, Wang B, Gao J, Zhu B, Peng R, Yao Q. Transglucosylation of ascorbic acid to ascorbic acid 2-glucoside by a truncated version of α-glucosidase from Aspergillus niger. J Food Biochem 2017. [DOI: 10.1111/jfbc.12432] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhenjun Li
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute; Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd; Shanghai 201106 People's Republic of China
| | - Hongjuan Han
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute; Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd; Shanghai 201106 People's Republic of China
| | - Bo Wang
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute; Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd; Shanghai 201106 People's Republic of China
| | - Jianjie Gao
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute; Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd; Shanghai 201106 People's Republic of China
| | - Bo Zhu
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute; Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd; Shanghai 201106 People's Republic of China
| | - Rihe Peng
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute; Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd; Shanghai 201106 People's Republic of China
| | - Quanhong Yao
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute; Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd; Shanghai 201106 People's Republic of China
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Damasceno L, Ritter G, Batt CA. Process development for production and purification of the Schistosoma mansoni Sm14 antigen. Protein Expr Purif 2017; 134:72-81. [DOI: 10.1016/j.pep.2017.04.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 02/22/2017] [Accepted: 04/03/2017] [Indexed: 10/19/2022]
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22
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Zeng R, Hu Q, Yin XY, Huang H, Yan JB, Gong ZW, Yang ZH. Cloning a novel endo-1,4-β-D-glucanase gene from Trichoderma virens and heterologous expression in E. coli. AMB Express 2016; 6:108. [PMID: 27830495 PMCID: PMC5103005 DOI: 10.1186/s13568-016-0282-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 10/31/2016] [Indexed: 12/16/2022] Open
Abstract
Endo-1,4-β-d-glucanase (EG), as a key constituent of cellulase taking the responsibility of cutting β-1,4 glycosidic bonds, plays the essential role in the process of degrading cellulose by cellulase. Cloning and expressing the EG gene is important to the cellulase research and application. In this work, a novel EG gene was cloned from Trichoderma virens ZY-01, which was a cellulase secreting microbe isolated by our laboratory. The DNA sequence showed that the length of the cloned EG is 1069 bp, which had 95.2% similarity to the EG IV from T. viride AS 3.3711. Further, the expression vector pET-32a-EG was constructed and was successfully heterologously expressed in Escherichia coli. The expression product was purified with Ni2+ affinity chromatography and its enzymatic properties were investigated. The SDS-PAGE showed the target protein is 39 kDa, which is consistent with the translated result from the DNA sequence. The kinetic parameter for the expression product was Km = 13.71 mg/mL and Vmax=0.51 μmol/min·mL. The optimal reaction pH and temperature was pH = 7.0 and T = 40 °C, which is similar to the native EG produced by Trichoderma virens ZY-01. It provides the foundation for the endo-1,4-β-d-glucanase further evolution and application.
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Faraji H, Ramezani M, Sadeghnia HR, Abnous K, Soltani F, Mashkani B. High-level expression of a biologically active staphylokinase in Pichia pastoris. Prep Biochem Biotechnol 2016; 47:379-387. [PMID: 27813714 DOI: 10.1080/10826068.2016.1252924] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Staphylokinase (SAK) as the third generation thrombolytic molecule is a promising agent for the treatment of thrombosis. SAK variant of SAKфC was expressed in Pichia pastoris strains KM71H and GS115. The codon adaptation index of SAK was improved from 0.75 to 0.89. The expression of recombinant SAK (rSAK) reached to its maximum (310 mg/L of the culture medium) after 48-hr stimulation with 3% methanol and remained steady until day 5. The maximum activity of the enzyme was at pH 8.6 and 37°C. It was highly active at temperatures 20-37°C and pH ranges of 6.8-9 (relative residual activity more than 80%). It was determined that rSAK was 73.8% of the total proteins secreted by P. pastoris KM71H into the culture media. The specific activities of rSAK were measured as 9,002 and 21,042 U/mg for the nonpurified and purified proteins, respectively. The quantity of the purified protein (>99% purity) was 720 µg/mL with a purification factor of 2.34. Western blot analysis showed two bands of nearly 22 and 18.6 kDa. It was concluded that P. pastoris is a proper host for expression of biologically active and endotoxin-free rSAK due to its high expression and low protein impurity in culture supernatant.
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Affiliation(s)
- Habibollah Faraji
- a Department of Medical Biotechnology, Faculty of Medicine , Mashhad University of Medical Sciences , Mashhad , Iran
| | - Mohammad Ramezani
- b Pharmaceutical Research Center, School of Pharmacy , Mashhad University of Medical Sciences , Mashhad , Iran
| | - Hamid Reza Sadeghnia
- c Neurocognitive Research Center, Faculty of Medicine , Mashhad University of Medical Sciences , Mashhad , Iran.,d Department of New Sciences and Technology, Faculty of Medicine , Mashhad University of Medical Sciences , Mashhad , Iran
| | - Khalil Abnous
- e Pharmaceutical Research Center , Mashhad University of Medical Sciences , Mashhad , Iran.,f Department of Medicinal Chemistry , Mashhad University of Medical Sciences , Mashhad , Iran
| | - Fatemeh Soltani
- g Biotechnology Research Center , Mashhad University of Medical Sciences , Mashhad , Iran
| | - Baratali Mashkani
- h Department of Medical Biochemistry, Faculty of Medicine , Mashhad University of Medical Sciences , Mashhad , Iran
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24
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Xiang L, Wang Q, Zhou Y, Yin L, Zhang G, Ma Y. High-level expression of a ZEN-detoxifying gene by codon optimization and biobrick in Pichia pastoris. Microbiol Res 2016; 193:48-56. [PMID: 27825486 DOI: 10.1016/j.micres.2016.09.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 09/13/2016] [Accepted: 09/23/2016] [Indexed: 11/16/2022]
Abstract
The mycotoxin zearalenone (ZEN) can be degraded by a lactone hydrolase ZHD, which was derived from Gliocladium roseum. Here, based on the native ZHD encoding gene zhd101, a codon optimized zhd gene was synthesized, which was used for high expression of ZHD in Pichia pastoris GS115. Meanwhile, to further improve the expression of recombinant ZHD, the plasmids containing 1 to 4 copies of the zhd expression cassette were constructed, respectively, using the biobrick method. The protein expression in the recombinant P. pastoris X3c, which was transformed with the plasmid containing 3 copies of zhd expression cassette, was the highest. In addition, the enzymatic activity of ZHD against ZEN was defined for the first time based on a standard curve of peak area vs ZEN concentration. The ZEN degradation activity of ZHD from shake flask fermentation was calculated as 22.5U/mL with the specific activity of 4976.5U/mg. Furthermore, the high-density fermentation of P. pastoris X3c strain was also performed in 5L fermenter. The maximum enzyme activity of the supernatant was 150.1U/mL, which were 6.7-fold higher than that of the shake flask fermentation.
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Affiliation(s)
- La Xiang
- Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, The College of Life Sciences, Hubei University, Wuhan 430062, China
| | - Qinhong Wang
- Tianjin institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| | - Yuling Zhou
- Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, The College of Life Sciences, Hubei University, Wuhan 430062, China
| | - Lifeng Yin
- Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, The College of Life Sciences, Hubei University, Wuhan 430062, China
| | - Guimin Zhang
- Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, The College of Life Sciences, Hubei University, Wuhan 430062, China.
| | - Yanhe Ma
- Tianjin institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
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Yang H, Zhu Q, Zhou N, Tian Y. Optimized expression of prolyl aminopeptidase in Pichia pastoris and its characteristics after glycosylation. World J Microbiol Biotechnol 2016; 32:176. [PMID: 27628336 DOI: 10.1007/s11274-016-2135-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 08/31/2016] [Indexed: 01/09/2023]
Abstract
Prolyl aminopeptidases are specific exopeptidases that catalyze the hydrolysis of the N-terminus proline residue of peptides and proteins. In the present study, the prolyl aminopeptidase gene (pap) from Aspergillus oryzae JN-412 was optimized through the codon usage of Pichia pastoris. Both the native and optimized pap genes were inserted into the expression vector pPIC9 K and were successfully expressed in P. pastoris. Additionally, the activity of the intracellular enzyme expressed by the recombinant optimized pap gene reached 61.26 U mL(-1), an activity that is 2.1-fold higher than that of the native gene. The recombinant enzyme was purified by one-step elution through Ni-affinity chromatography. The optimal temperature and pH of the purified PAP were 60 °C and 7.5, respectively. Additionally, the recombinant PAP was recovered at a yield greater than 65 % at an extremely broad range of pH values from 6 to 10 after treatment at 50 °C for 6 h. The molecular weight of the recombinant PAP decreased from 50 kDa to 48 kDa after treatment with a deglycosylation enzyme, indicating that the recombinant PAP was completely glycosylated. The glycosylated PAP exhibited high thermo-stability. Half of the activity remained after incubation at 50 °C for 50 h, whereas the remaining activity of PAP expressed in E. coli was only 10 % after incubation at 50 °C for 1 h. PAP could be activated by the appropriate salt concentration and exhibited salt tolerance against NaCl at a concentration up to 5 mol L(-1).
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Affiliation(s)
- Hongyu Yang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Qiang Zhu
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Nandi Zhou
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Yaping Tian
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China.
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Xia F, Li X, Li X, Zheng D, Sun Q, Liu J, Li Y, Hua J, Qi B. Elevation of the Yields of Very Long Chain Polyunsaturated Fatty Acids via Minimal Codon Optimization of Two Key Biosynthetic Enzymes. PLoS One 2016; 11:e0158103. [PMID: 27433934 PMCID: PMC4951033 DOI: 10.1371/journal.pone.0158103] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Accepted: 06/12/2016] [Indexed: 12/23/2022] Open
Abstract
Eicosapentaenoic acid (EPA, 20:5Δ5,8,11,14,17) and Docosahexaenoic acid (DHA, 22:6Δ4,7,10,13,16,19) are nutritionally beneficial to human health. Transgenic production of EPA and DHA in oilseed crops by transferring genes originating from lower eukaryotes, such as microalgae and fungi, has been attempted in recent years. However, the low yield of EPA and DHA produced in these transgenic crops is a major hurdle for the commercialization of these transgenics. Many factors can negatively affect transgene expression, leading to a low level of converted fatty acid products. Among these the codon bias between the transgene donor and the host crop is one of the major contributing factors. Therefore, we carried out codon optimization of a fatty acid delta-6 desaturase gene PinD6 from the fungus Phytophthora infestans, and a delta-9 elongase gene, IgASE1 from the microalga Isochrysis galbana for expression in Saccharomyces cerevisiae and Arabidopsis respectively. These are the two key genes encoding enzymes for driving the first catalytic steps in the Δ6 desaturation/Δ6 elongation and the Δ9 elongation/Δ8 desaturation pathways for EPA/DHA biosynthesis. Hence expression levels of these two genes are important in determining the final yield of EPA/DHA. Via PCR-based mutagenesis we optimized the least preferred codons within the first 16 codons at their N-termini, as well as the most biased CGC codons (coding for arginine) within the entire sequences of both genes. An expression study showed that transgenic Arabidopsis plants harbouring the codon-optimized IgASE1 contained 64% more elongated fatty acid products than plants expressing the native IgASE1 sequence, whilst Saccharomyces cerevisiae expressing the codon optimized PinD6 yielded 20 times more desaturated products than yeast expressing wild-type (WT) PinD6. Thus the codon optimization strategy we developed here offers a simple, effective and low-cost alternative to whole gene synthesis for high expression of foreign genes in yeast and Arabidopsis.
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Affiliation(s)
- Fei Xia
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, 271000, China
| | - Xueying Li
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, 271000, China
| | - Xinzheng Li
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, 271000, China
| | - Desong Zheng
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, 271000, China
| | - Quanxi Sun
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, 271000, China
| | - Jiang Liu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, 271000, China
| | - Yaxiao Li
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, 271000, China
| | - Jinping Hua
- Department of Plant Genetics & Breeding, College of Agronomy and Biotechnology, China Agricultural University, No 2, Yuanmingyuan West Road, Haidian District, Beijing, 100193, China
| | - Baoxiu Qi
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, 271000, China
- * E-mail:
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You S, Tu T, Zhang L, Wang Y, Huang H, Ma R, Shi P, Bai Y, Su X, Lin Z, Luo H, Yao B. Improvement of the thermostability and catalytic efficiency of a highly active β-glucanase from Talaromyces leycettanus JCM12802 by optimizing residual charge-charge interactions. BIOTECHNOLOGY FOR BIOFUELS 2016; 9:124. [PMID: 27303445 PMCID: PMC4906821 DOI: 10.1186/s13068-016-0544-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 06/02/2016] [Indexed: 05/31/2023]
Abstract
BACKGROUND β-Glucanase is one of the most extensively used biocatalysts in biofuel, food and animal feed industries. However, the poor thermostability and low catalytic efficiency of most reported β-glucanases limit their applications. Currently, two strategies are used to overcome these bottlenecks, i.e., mining for novel enzymes from extremophiles and engineering existing enzymes. RESULTS A novel endo-β-1,3-1,4-glucanase of GH16 (Tlglu16A) from the thermophilic fungus Talaromyces leycettanus JCM12802 was produced in Pichia pastoris and characterized. For potential industrial applications, recombinant TlGlu16A exhibits favorable enzymatic properties over most reported glucanases, i.e., remarkable stability over a wide pH range from 1.0 to 10.0 and superior activity on glucan substrates (up to 15,197 U/mg). The only weakness of TlGlu16A is the thermolability at 65 °C and higher. To improve the thermostability, the enzyme thermal stability system was then used to engineer TlGlu16A through optimization of residual charge-charge interactions. Eleven mutants were constructed and compared to the wild-type TlGlu16A. Four mutants, H58D, E134R, D235G and D296K, showed longer half-life time at 80 °C (31, 7, 25, 22 vs. 0.5 min), and two mutants, D235G and D296K, had greater specific activities (158.2 and 122.2 %, respectively) and catalytic efficiencies (k cat/K m, 170 and 114 %, respectively). CONCLUSIONS The engineered TlGlu16A has great application potentials from the perspectives of enzyme yield and properties. Its thermostability and activity were apparently improved in the engineered enzymes through charge optimization. This study spans the genetic, functional and structural fields, and provides a combination of gene mining and protein engineering approaches for the systematic improvement of enzyme performance.
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Affiliation(s)
- Shuai You
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
| | - Tao Tu
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
| | - Lujia Zhang
- />State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237 People’s Republic of China
| | - Yuan Wang
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
| | - Huoqing Huang
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
| | - Rui Ma
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
| | - Pengjun Shi
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
| | - Yingguo Bai
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
| | - Xiaoyun Su
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
| | - Zhemin Lin
- />Institute of Animal Science and Veterinary Medicine, Hainan Academy of Agricultural Sciences, Haikou, 571100 People’s Republic of China
| | - Huiying Luo
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
| | - Bin Yao
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
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Improving the production of human interferon gamma (hIFN-γ) in Pichia pastoris cell factory: An approach of cell level. Process Biochem 2016. [DOI: 10.1016/j.procbio.2016.02.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Chen X, Zhou M, Huang Z, Jia G, Liu G, Zhao H. Codon optimization of Aspergillus niger feruloyl esterase and its expression in Pichia pastoris. Biologia (Bratisl) 2016. [DOI: 10.1515/biolog-2016-0089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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30
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Extracellular expression and antiviral activity of a bovine interferon-alpha through codon optimization in Pichia pastoris. Microbiol Res 2016; 191:12-8. [PMID: 27524649 DOI: 10.1016/j.micres.2016.05.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 04/29/2016] [Accepted: 05/18/2016] [Indexed: 11/23/2022]
Abstract
Interferons (IFNs) are the primary line of defense against infectious agents. In particular, IFN-α is an important antiviral cytokine and has a wide range of immune-modulating functions. Porcine and human IFN-α have been successfully prepared and play important roles in the prevention and therapy of viral diseases. To date, there has been limited applied research on bovine IFN-α. To achieve high-level expression of recombinant bovine IFN-α (bIFN-α) in Pichia pastoris for large-scale application, the bIFN-α gene was optimized and synthesized on the basis of codon bias of P. pastoris. Optimized bIFN-α (opti-bIFN-α) was successfully expressed in P. pastoris and directly secreted into the culture supernatant. The amount of extracellular soluble opti-bIFN-α was observed to be 200μg/mL in a shake flask. Expression efficiency of opti-bIFN-α was found to be about three times that of wild-type bIFN-α when the expression yield was compared at the same copies of the targeted gene. In addition, both the original cultural supernatant and purified opti-bIFN-α showed strong antiviral activity in MDBK cells (2×10(6)AU/mL and 1×10(7)AU/mg, respectively) and IBRS-2 cells (3×10(5)AU/mL and 1.5×10(6)AU/mg, respectively) against a recombinant vesicular stomatitis virus expressing the green fluorescence protein. In this study, we demonstrated high-level extracellular expression of opti-bIFN-α by P. pastoris. To the best of our knowledge, the opti-bIFN-α yield observed in this study is the highest to be reported to date. Our results demonstrated that the extracellular opti-bIFN-α with strong antiviral activity could be easily prepared and purified at a low cost and that it may be a potential biological therapeutic drug against bovine viral infections.
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Li L, Shin SY, Lee SJ, Moon JS, Im WT, Han NS. Production of Ginsenoside F2 by Using Lactococcus lactis with Enhanced Expression of β-Glucosidase Gene from Paenibacillus mucilaginosus. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:2506-2512. [PMID: 26494255 DOI: 10.1021/acs.jafc.5b04098] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This study aimed to produce a pharmacologically active minor ginsenoside F2 from the major ginsenosides Rb1 and Rd by using a recombinant Lactococcus lactis strain expressing a heterologous β-glucosidase gene. The nucleotide sequence of the gene (BglPm) was derived from Paenibacillus mucilaginosus and synthesized after codon optimization, and the two genes (unoptimized and optimized) were expressed in L. lactis NZ9000. Codon optimization resulted in reduction of unfavorable codons by 50% and a considerable increase in the expression levels (total activities) of β-glucosidases (0.002 unit/mL, unoptimized; 0.022 unit/mL, optimized). The molecular weight of the enzyme was 52 kDa, and the purified forms of the enzymes could successfully convert Rb1 and Rd into F2. The permeabilized L. lactis expressing BglPm resulted in a high conversion yield (74%) of F2 from the ginseng extract. Utilization of this microbial cell to produce F2 may provide an alternative method to increase the health benefits of Panax ginseng.
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Affiliation(s)
- Ling Li
- Brain Korea 21 Center for Bio-Resource Development, Division of Animal, Horticultural and Food Sciences, Chungbuk National University , Cheongju 361-763, Korea
| | - So-Yeon Shin
- Brain Korea 21 Center for Bio-Resource Development, Division of Animal, Horticultural and Food Sciences, Chungbuk National University , Cheongju 361-763, Korea
| | - Soo Jin Lee
- Brain Korea 21 Center for Bio-Resource Development, Division of Animal, Horticultural and Food Sciences, Chungbuk National University , Cheongju 361-763, Korea
| | - Jin Seok Moon
- Brain Korea 21 Center for Bio-Resource Development, Division of Animal, Horticultural and Food Sciences, Chungbuk National University , Cheongju 361-763, Korea
| | - Wan Taek Im
- Department of Biotechnology, Hankyong National University , Kyonggi-do 456-749, Korea
| | - Nam Soo Han
- Brain Korea 21 Center for Bio-Resource Development, Division of Animal, Horticultural and Food Sciences, Chungbuk National University , Cheongju 361-763, Korea
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Improved Production of Aspergillus usamii endo-β-1,4-Xylanase in Pichia pastoris via Combined Strategies. BIOMED RESEARCH INTERNATIONAL 2016; 2016:3265895. [PMID: 27066499 PMCID: PMC4811622 DOI: 10.1155/2016/3265895] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Accepted: 01/24/2016] [Indexed: 11/24/2022]
Abstract
A series of strategies were applied to improve expression level of recombinant endo-β-1,4-xylanase from Aspergillus usamii (A. usamii) in Pichia pastoris (P. pastoris). Firstly, the endo-β-1,4-xylanase (xynB) gene from A. usamii was optimized for P. pastoris and expressed in P. pastoris. The maximum xylanase activity of optimized (xynB-opt) gene was 33500 U/mL after methanol induction for 144 h in 50 L bioreactor, which was 59% higher than that by wild-type (xynB) gene. To further increase the expression of xynB-opt, the Vitreoscilla hemoglobin (VHb) gene was transformed to the recombinant strain containing xynB-opt. The results showed that recombinant strain harboring the xynB-opt and VHb (named X33/xynB-opt-VHb) displayed higher biomass, cell viability, and xylanase activity. The maximum xylanase activity of X33/xynB-opt-VHb in 50 L bioreactor was 45225 U/mL, which was 35% and 115% higher than that by optimized (xynB-opt) gene and wild-type (xynB) gene. Finally, the induction temperature of X33/xynB-opt-VHb was optimized in 50 L bioreactor. The maximum xylanase activity of X33/xynB-opt-VHb reached 58792 U/mL when the induction temperature was 22°C. The results presented here will greatly contribute to improving the production of recombinant proteins in P. pastoris.
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Choengpanya K, Arthornthurasuk S, Wattana-amorn P, Huang WT, Plengmuankhae W, Li YK, Kongsaeree PT. Cloning, expression and characterization of β-xylosidase from Aspergillus niger ASKU28. Protein Expr Purif 2015; 115:132-40. [DOI: 10.1016/j.pep.2015.07.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Revised: 07/06/2015] [Accepted: 07/07/2015] [Indexed: 10/23/2022]
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Wang M, Jiang S, Han Z, Zhao B, Wang L, Zhou Z, Wang Y. Expression and immunogenic characterization of recombinant gp350 for developing a subunit vaccine against Epstein-Barr virus. Appl Microbiol Biotechnol 2015; 100:1221-1230. [PMID: 26433969 DOI: 10.1007/s00253-015-7027-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Revised: 09/04/2015] [Accepted: 09/20/2015] [Indexed: 01/27/2023]
Abstract
Epstein-Barr virus (EBV) is a ubiquitous human herpesvirus that is linked to the development of various malignancies. There is an urgent need for effective vaccines against EBV. EBV envelope glycoprotein gp350 is an attractive candidate for a prophylactic vaccine. This study was undertaken to produce the truncated (codons 1-443) gp350 protein (gp350(1-443)) in Pichia pastoris and evaluate its immunogenicity. The gp350(1-443) protein was expressed as a secretory protein with an N-terminal His-tag in P. pastoris and purified through Ni-NTA chromatography. Immunization with the recombinant gp350(1-443) could elicit high levels of gp350(1-443)-specific antibodies in mice. Moreover, gp350(1-443)-immunized mice developed strong lymphoproliferative and Th1/Th2 cytokine responses. Furthermore, the recombinant gp350(1-443) could stimulate CD4(+) and CD8(+) T cell responses in vaccinated mice. Collectively, these findings demonstrated that the yeast-expressed gp350(1-443) retained strong immunogenicity. This study will provide a useful source for developing EBV subunit vaccine candidates.
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Affiliation(s)
- Man Wang
- Institute for Translational Medicine, Medical College of Qingdao University, Qingdao, 266021, China.
| | - Shuai Jiang
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Zhenwei Han
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Bing Zhao
- Institute for Translational Medicine, Medical College of Qingdao University, Qingdao, 266021, China
| | - Li'ao Wang
- Institute for Translational Medicine, Medical College of Qingdao University, Qingdao, 266021, China
| | - Zhixia Zhou
- Institute for Translational Medicine, Medical College of Qingdao University, Qingdao, 266021, China
| | - Yefu Wang
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, 430072, China.
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Protective immunity of a Pichia pastoris expressed recombinant iridovirus major capsid protein in the Chinese giant salamander, Andrias davidianus. Vaccine 2015; 33:5662-5669. [DOI: 10.1016/j.vaccine.2015.08.054] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Revised: 08/06/2015] [Accepted: 08/11/2015] [Indexed: 01/12/2023]
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Production of conjugated linoleic acid by heterologous expression of linoleic acid isomerase in oleaginous fungus Mortierella alpina. Biotechnol Lett 2015; 37:1983-92. [PMID: 26109146 DOI: 10.1007/s10529-015-1871-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 05/22/2015] [Indexed: 12/23/2022]
Abstract
OBJECTIVE To increase the commercial value of oleaginous fungus Mortierella alpina by incorporation of trans-10,cis-12 conjugated linoleic acid (CLA) into the polyunsaturated fatty acids (PUFAs) of M. alpina via Propionibacterium acnes isomerase (PAI) conversion. RESULTS The PAI gene and the codon optimization version were heterologously expressed in M. alpina via Agrobacterium tumefaciens-mediated transformation (ATMT). Coding usage modification significantly improved the translation of PAI transcripts and trans-10,cis-12 CLA was produced up to 1.2 mg l(-1), which corresponds to approx. 0.05% of the total fatty acid (TFA). Since PAI prefers free linoleic acid as a substrate rather than any other forms, 5 μM long-chain acyl CoA synthetase inhibitor was added and the trans-10,cis-12 CLA content increased approx. 24-fold to 29 mg l(-1), reaching up to 1.2% (w/w) of the TFA in M. alpina. CONCLUSION Heterologous expression of PAI in M. alpina by ATMT methods is a practicable way in biosynthesis of CLA and this system may be a feasible platform for industrial production of CLA.
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Codon Optimization Significantly Improves the Expression Level of α -Amylase Gene from Bacillus licheniformis in Pichia pastoris. BIOMED RESEARCH INTERNATIONAL 2015; 2015:248680. [PMID: 26171389 PMCID: PMC4478363 DOI: 10.1155/2015/248680] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 10/31/2014] [Indexed: 11/17/2022]
Abstract
α-Amylase as an important industrial enzyme has been widely used in starch processing, detergent, and paper industries. To improve expression efficiency of recombinant α-amylase from Bacillus licheniformis (B. licheniformis), the α-amylase gene from B. licheniformis was optimized according to the codon usage of Pichia pastoris (P. pastoris) and expressed in P. pastoris. Totally, the codons encoding 305 amino acids were optimized in which a total of 328 nucleotides were changed and the G+C content was increased from 47.6 to 49.2%. The recombinants were cultured in 96-deep-well microplates and screened by a new plate assay method. Compared with the wild-type gene, the optimized gene is expressed at a significantly higher level in P. pastoris after methanol induction for 168 h in 5- and 50-L bioreactor with the maximum activity of 8100 and 11000 U/mL, which was 2.31- and 2.62-fold higher than that by wild-type gene. The improved expression level makes the enzyme a good candidate for α-amylase production in industrial use.
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Wei L, Liu J, Qi H, Wen J. Engineering Scheffersomyces stipitis for fumaric acid production from xylose. BIORESOURCE TECHNOLOGY 2015; 187:246-254. [PMID: 25863201 DOI: 10.1016/j.biortech.2015.03.122] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 03/24/2015] [Accepted: 03/25/2015] [Indexed: 05/28/2023]
Abstract
In this work, Scheffersomyces stipitis, the yeast with excellent xylose-utilizing ability, was firstly engineered for fumaric acid production from xylose with the heterologous reductive pathway from Rhizopus oryzae FM19, and 1.86g/L fumaric acid was produced by the initial strain PSRPMF under the oxygen-limited condition. Furthermore, three strategies were performed to improve the fumaric acid production, including increasing the reductive pathway activity by codon optimization, blocking the fumaric acid conversion in tricarboxylic acid cycle by knocking out the native fumarases, and improving the fumaric acid transportation by overexpressing heterologous transporter. Finally, the strain PSYPMFfS was obtained and the fumaric acid titer reached to 4.67g/L, significantly increased by 37.92-fold than that of the control strain PSPYSS. It was indicated that the S. stipitis was a promising platform for fumaric acid production from xylose.
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Affiliation(s)
- Liang Wei
- Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300072, People's Republic of China; SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
| | - Jiao Liu
- Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300072, People's Republic of China; SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
| | - Haishan Qi
- Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300072, People's Republic of China; SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
| | - Jianping Wen
- Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300072, People's Republic of China; SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China.
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Purification and characterization of a novel alkaline β-1,3-1,4-glucanase (lichenase) from thermophilic fungus Malbranchea cinnamomea. ACTA ACUST UNITED AC 2014; 41:1487-95. [DOI: 10.1007/s10295-014-1494-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 07/20/2014] [Indexed: 11/26/2022]
Abstract
Abstract
A novel alkaline β-1,3-1,4-glucanase (McLic1) from a thermophilic fungus, Malbranchea cinnamomea, was purified and biochemically characterized. McLic1 was purified to homogeneity with a purification fold of 3.1 and a recovery yield of 3.7 %. The purified enzyme was most active at pH 10.0 and 55 °C, and exhibited a wide range of pH stability (pH 4.0–10.0). McLic1 displayed strict substrate specificity for barley β-glucan, oat β-glucan and lichenan, but did not show activity towards other tested polysaccharides and synthetic p-nitrophenyl derivates, suggesting that it is a specific β-1,3-1,4-glucanase. The K m values for barley β-glucan, oat β-glucan and lichenan were determined to be 0.69, 1.11 and 0.63 mg mL−1, respectively. Moreover, the enzyme was stable in various non ionic surfactants, oxidizing agents and several commercial detergents. Thus, the alkaline β-1,3-1,4-glucanase may have potential in industrial applications, such as detergent, paper and pulp industries.
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Chaari F, Belghith-Fendri L, Blibech M, Driss D, Ellouzi SZ, sameh M, Ellouz-Chaabouni S. Biochemical characterization of a lichenase from Penicillium occitanis Pol6 and its potential application in the brewing industry. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.02.023] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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41
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Wu D, Teng D, Xi D, Wang X, Wang X, Mao R, Zhang Y, Dai H, Wang J. Rapid cloning, expression and purification of a novel high-activity alkaline phosphatase with detoxification of lipopolysaccharide. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.01.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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42
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Dong JX, Xie X, Hu DW, Chen SC, He YS, Beier RC, Shen YD, Sun YM, Xu ZL, Wang H, Yang JY. Codon modification for the DNA sequence of a single-chain Fv antibody against clenbuterol and expression in Pichia pastoris. Appl Microbiol Biotechnol 2013; 98:3679-89. [PMID: 24190495 DOI: 10.1007/s00253-013-5324-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 10/08/2013] [Accepted: 10/09/2013] [Indexed: 10/26/2022]
Abstract
The expression efficiency was improved for the recombinant single-chain variable fragment (scFv) against clenbuterol (CBL) obtained from mouse and expressed in the methylotrophic yeast Pichia pastoris GS115, by redesigning and synthesizing the DNA sequence encoding for CBL-scFv based on the codon bias of P. pastoris. The codons encoding 124 amino acids were optimized, in which a total of 156 nucleotides were changed, and the G+C ratio was simultaneously decreased from 53 to 47.2 %. Under the optimized expression conditions, the yield of the recombinant CBL-scFv (41 kDa) antibodies was 0.223 g L⁻¹ in shake culture. Compared to the non-optimized control, the expression level of the optimized recombinant CBL-scFv based on preferred codons in P. pastoris demonstrated a 2.35-fold higher yield. Furthermore, the recombinant CBL-scFv was purified by Ni-NTA column chromatography, and the purity was 95 %. The purified CBL-scFv showed good CBL recognition by a competitive indirect enzyme-linked immunoassay. The average concentration required for 50 % inhibition of binding and the limit of detection for the assay were 5.82 and 0.77 ng mL⁻¹, respectively.
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Affiliation(s)
- Jie-Xian Dong
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, Guangdong Province, 510642, People's Republic of China
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Yu P, Yan Y, Gu Q, Wang X. Codon optimisation improves the expression of Trichoderma viride sp. endochitinase in Pichia pastoris. Sci Rep 2013; 3:3043. [PMID: 24154717 PMCID: PMC3807108 DOI: 10.1038/srep03043] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Accepted: 09/24/2013] [Indexed: 11/25/2022] Open
Abstract
The mature cDNA of endochitinase from Trichoderma viride sp. was optimised based on the codon bias of Pichia pastoris GS115 and synthesised by successive PCR; the sequence was then transformed into P. pastoris GS115 via electroporation. The transformant with the fastest growth rate on YPD plates containing 4 mg/mL G418 was screened and identified. This transformant produced 23.09 U/mL of the recombinant endochitinase, a 35% increase compared to the original strain bearing the wild-type endochitinase cDNA. The recombinant endochitinase was sequentially purified by ammonia sulphate precipitation, DE-52 anion-exchange chromatography and Sephadex G-100 size-exclusion chromatography. Thin-layer chromatography indicated that the purified endochitinase could hydrolyse chito-oligomers or colloidal chitin to generate diacetyl-chitobiose (GlcNAc)₂ as the main product. This study demonstrates (1) a means for high expression of Trichoderma viride sp. endochitinase in P. pastoris using codon optimisation and (2) the preparation of chito-oligomers using endochitinase.
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Affiliation(s)
- Ping Yu
- College of Food Science and Biotechnology, Zhejiang Gongshang University, 149 Jiaogong Road, Hangzhou 310035, Zhejiang Province, People's Republic of China
| | - Yuan Yan
- College of Food Science and Biotechnology, Zhejiang Gongshang University, 149 Jiaogong Road, Hangzhou 310035, Zhejiang Province, People's Republic of China
| | - Qing Gu
- College of Food Science and Biotechnology, Zhejiang Gongshang University, 149 Jiaogong Road, Hangzhou 310035, Zhejiang Province, People's Republic of China
| | - Xiangyang Wang
- College of Food Science and Biotechnology, Zhejiang Gongshang University, 149 Jiaogong Road, Hangzhou 310035, Zhejiang Province, People's Republic of China
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Li Y, Zhang L, Ding Z, Shi G. Constitutive expression of a novel isoamylase from Bacillus lentus in Pichia pastoris for starch processing. Process Biochem 2013. [DOI: 10.1016/j.procbio.2013.07.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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45
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Purification and characterization of a novel β-1,3/1,4-glucanase from Sistotrema brinkmannii HQ717718. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s13765-013-3028-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Expression, purification, and immunogenic characterization of Epstein-Barr virus recombinant EBNA1 protein in Pichia pastoris. Appl Microbiol Biotechnol 2013; 97:6251-62. [PMID: 23685476 DOI: 10.1007/s00253-013-4967-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 04/25/2013] [Accepted: 04/29/2013] [Indexed: 10/26/2022]
Abstract
Epstein-Barr virus (EBV) is a ubiquitous human herpesvirus associated with the development of both lymphoid and epithelial tumors. EBNA1 is the only viral protein expressed in all EBV-associated malignancies and plays important roles in EBV latency. Thus, EBNA1 is thought to be a promising antigen for immunotherapy of all EBV-associated malignancies. This study was undertaken to produce recombinant EBNA1 protein in Pichia pastoris and evaluate its immunogenicity. The truncated EBNA1 (E1ΔGA, codons 390-641) was expressed as a secretory protein with an N-terminal histidine tag in the methylotrophic yeast P. pastoris and purified by Ni-NTA affinity chromatography. The purified proteins were then used as antigens to immunize BALB/c mice for production of polyclonal antibodies. Western blot analysis showed that the polyclonal antibodies specifically recognized the EBNA1 protein in B95-8 cell lysates. The recombinant E1ΔGA also induced strong lymphoproliferative and Th1 cytokine responses in mice. Furthermore, mice immunized with E1ΔGA developed CD4+ and CD8+ T cell responses. These findings showed that the yeast-expressed E1ΔGA retained good immunogenicity and might be a promising vaccine candidate against EBV-associated malignancies.
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Nakamura K, Maeda Y, Morimoto K, Katayama S, Kondo K, Nakamura S. Functional expression of amyloidogenic human stefins A and B in Pichia pastoris using codon optimization. Biotechnol Appl Biochem 2013; 60:283-8. [PMID: 23656633 DOI: 10.1002/bab.1079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Accepted: 12/04/2012] [Indexed: 01/30/2023]
Abstract
Complementary DNAs encoding human stefins A (HSA) and B (HSB) were synthesized using Pichia-preferred codons by overlap extension PCR. The full-length genes were ligated downstream of the glyceraldehyde-3-phosphate dehydrogenase promoter in the Pichia expression vector pGAPZαC and successfully expressed in Pichia pastoris strain X-33. Functional recombinant HSA and HSB proteins were purified from culture medium at yields of 121.3 ± 13.5 (n = 3) and 95.4 ± 4.1 (n = 3) mg/L, respectively. Using this expression strategy, we demonstrated that high levels of bioactive recombinant HSA and HSB can be produced by fermentation in P. pastoris.
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Affiliation(s)
- Kosuke Nakamura
- Food, Nutrition and Health, University of British Columbia, Vancouver, Canada
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Purification, characterization, and heterologous expression of a thermostable β-1,3-1,4-glucanase from Bacillus altitudinis YC-9. Appl Biochem Biotechnol 2013; 169:960-75. [PMID: 23292246 DOI: 10.1007/s12010-012-0064-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Accepted: 12/26/2012] [Indexed: 10/27/2022]
Abstract
Purification, characterization, gene cloning, and heterologous expression in Escherichia coli of a thermostable β-1,3-1,4-glucanase from Bacillus altitudinis YC-9 have been investigated in this paper. The donor strain B. altitudinis YC-9 was isolated from spring silt. The native enzyme was purified by ammonium sulfate precipitation, diethylaminoethyl-cellulose anion exchange chromatography, and Sephadex G-100 gel filtration. The purified β-1,3-1,4-glucanase was observed to be stable at 60 °C and retain more than 90% activity when incubated for 2 h at 60 °C and remain about 75% and 44% activity after incubating at 70 °C and 80 °C for 10 min, respectively. Acidity and temperature optimal for this enzyme was pH 6 and 65 °C. The open reading frame of the enzyme gene was measured to be 732 bp encoding 243 amino acids, with a predicted molecular weight of 27.47 kDa. The gene sequence of β-1,3-1,4-glucanase showed a homology of 98% with that of Bacillus licheniformis. After being expressed in E. coli BL21, active recombinant enzyme was detected both in the supernatants of the culture and the cell lysate, with the activity of 102.7 and 216.7 U/mL, respectively. The supernatants of the culture were used to purify the recombinant enzyme. The purified recombinant enzyme was characterized to show almost the same properties to the wild enzyme, except that the specific activity of the recombinant enzyme reached 5392.7 U/mg, which was higher than those ever reported β-1,3-1,4-glucanase from Bacillus strains. The thermal stability and high activity make this enzyme broad prospect for industry application. This is the first report on β-1,3-1,4-glucanase produced by B. altitudinis.
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High-level expression and immunogenicity of a porcine circovirus type 2 capsid protein through codon optimization in Pichia pastoris. Appl Microbiol Biotechnol 2012; 97:2867-75. [DOI: 10.1007/s00253-012-4540-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Revised: 10/20/2012] [Accepted: 10/22/2012] [Indexed: 02/07/2023]
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50
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Optimization of the production of Aspergillus niger α-glucosidase expressed in Pichia pastoris. World J Microbiol Biotechnol 2012; 29:533-40. [PMID: 23132254 DOI: 10.1007/s11274-012-1207-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Accepted: 10/31/2012] [Indexed: 10/27/2022]
Abstract
The α-glucosidase (AGL) from Aspergillus niger has been applied to produce isomaltooligosaccharides. In the present study, various factors which affect the yield of recombinant AGL, produced by engineered Pichia pastoris, were investigated. The expression level reached 5.5 U ml(-1) in bioreactor after optimization of parameters of initial induction cell density, induction temperature and methanol concentration. In addition, it was found that coexpression of protein disulfide isomerase (PDI) inhibited the growth of the engineered P. pastoris strains and had an adverse effect on the production of AGL, while codon optimization of native A. niger α-glucosidase encoding gene (aglu) resulted in a significant enhancement of enzyme production, which reached 10.1 U ml(-1). We believe that yield of AGL is increased by codon optimization as a result of enhanced translation efficiency as well as more stable mRNA secondary structure. In contrast, PDI coexpression under the control of alcohol oxidase promoter (PAOX1) seems to be less efficient in helping disulfide bond formation in AGL while probably induce unfolded protein response, which further leads to cell apoptosis and increased protein degradation.
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