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Karaoğlan M, Erden-Karaoğlan F. Effect of codon optimization and promoter choice on recombinant endo-polygalacturonase production in Pichia pastoris. Enzyme Microb Technol 2020; 139:109589. [DOI: 10.1016/j.enzmictec.2020.109589] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 04/12/2020] [Accepted: 04/29/2020] [Indexed: 01/17/2023]
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Overexpression and Biochemical Characterization of an Endo-α-1,4-polygalacturonase from Aspergillus nidulans in Pichia pastoris. Int J Mol Sci 2020; 21:ijms21062100. [PMID: 32204337 PMCID: PMC7139513 DOI: 10.3390/ijms21062100] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 03/12/2020] [Accepted: 03/12/2020] [Indexed: 11/17/2022] Open
Abstract
Pectinases have many applications in the industry of food, paper, and textiles, therefore finding novel polygalacturonases is required. Multiple sequence alignment and phylogenetic analysis of AnEPG (an endo-α-1,4-polygalacturonase from Aspergillus nidulans) and other GH 28 endo-polygalacturonases suggested that AnEPG is different from others. AnEPG overexpressed in Pichia pastoris was characterized. AnEPG showed the highest activity at pH 4.0, and exhibited moderate activity over a narrow pH range (pH 2.0-5.0) and superior stability in a wide pH range (pH 2.0-12.0). It displayed the highest activity at 60 °C, and retained >42.2% of maximum activity between 20 and 80 °C. It was stable below 40 °C and lost activity very quickly above 50 °C. Its apparent kinetic parameters against PGA (polygalacturonic acid) were determined, with the Km and kcat values of 8.3 mg/mL and 5640 μmol/min/mg, respectively. Ba2+ and Ni2+ enhanced activity by 12.2% and 9.4%, respectively, while Ca2+, Cu2+, and Mn2+ inhibited activity by 14.8%, 12.8%, and 10.2% separately. Analysis of hydrolysis products by AnEPG proved that AnEPG belongs to an endo-polygalacturonase. Modelled structure of AnEPG by I-TASSER showed structural characteristics of endo-polygalacturonases. This pectinase has great potential to be used in food industry and as feed additives.
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Wang J, Zhang Y, Qin X, Gao L, Han B, Zhang D, Li J, Huang H, Zhang W. Efficient Expression of an Acidic Endo-polygalacturonase from Aspergillus niger and Its Application in Juice Production. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:2730-2736. [PMID: 28248099 DOI: 10.1021/acs.jafc.6b05109] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
An endo-polygalacturonase gene (pga-zj5a) was cloned by reverse transcription from cDNAs synthesized from Aspergillus niger ZJ5 total RNA. The open reading frame of pga-zj5a was 1089 base pairs encoding 362 amino acids. Pga-zj5a lacking a signal peptide sequence was successfully amplified using A. niger ZJ5 cDNA as the template and was ligated into the pPIC9 vector. The resulting plasmid was transformed into competent cells of Pichia pastoris GS115 for heterologous expression. The polygalacturonase showed a maximum activity level of 10436 U/mL in the culture supernatant from a 3 L fermenter. Assays of enzymatic properties showed that the optimal pH and temperature of the recombinant PGA-ZJ5A were 4.5 and 40 °C, respectively. PGA-ZJ5A was effective in pear juice clarification, increased the volume of pear juice by 41.8%, and improved its light transmittance 3-fold.
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Affiliation(s)
- Jiaojiao Wang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081, China
- College of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology , Nanjing 211816, China
| | - Yuhong Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081, China
| | - Xing Qin
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081, China
| | - Lingyu Gao
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences , Beijing 100093, China
| | - Bin Han
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences , Beijing 100093, China
| | - Deqing Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081, China
| | - Jinyang Li
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081, China
| | - He Huang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology , Nanjing 211816, China
| | - Wei Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081, China
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Anand G, Yadav S, Yadav D. Purification and characterization of polygalacturonase from Aspergillus fumigatus MTCC 2584 and elucidating its application in retting of Crotalaria juncea fiber. 3 Biotech 2016; 6:201. [PMID: 28330273 PMCID: PMC5033773 DOI: 10.1007/s13205-016-0517-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 09/09/2016] [Indexed: 11/26/2022] Open
Abstract
Polygalacturonases represents an important member of pectinases group of enzymes with diverse industrial applications and is widely distributed among fungi, bacteria, yeasts, plants and some plant parasitic nematodes. An endo-polygalacturonase from a new fungal source Aspergillus fumigatus MTCC 2584 was produced under solid-state fermentation conditions and was purified simply by acetone precipitation and gel-filtration chromatography technique. The approximate molecular weight of the purified PG was found to be 43.0 kDa as revealed by SDS-PAGE. The pH optimum of the purified enzyme was found to be 10.0 and was stable in the pH range of 7-10. The optimum temperature of purified PG was found to be 30 °C. The Km and Kcat of the purified enzyme were 2.4 mg/ml and 44 s-1, respectively, and the metal ions Cu2+ and K+ were found to enhance the enzyme activity while Ag+, Ca2+ and Hg2+ were inhibitory in nature. Based on its alkaline nature, the potential of purified PG in retting of natural fiber Crotalaria juncea was elucidated in the absence of EDTA. This is probably the first report of alkaline PG from Aspergillus fumigatus.
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Affiliation(s)
- Gautam Anand
- Department of Biotechnology, D.D.U Gorakhpur University, Gorakhpur, UP, 273 009, India
| | - Sangeeta Yadav
- Department of Biotechnology, D.D.U Gorakhpur University, Gorakhpur, UP, 273 009, India
| | - Dinesh Yadav
- Department of Biotechnology, D.D.U Gorakhpur University, Gorakhpur, UP, 273 009, India.
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Lu X, Lin J, Wang C, Du X, Cai J. Purification and characterization of exo-polygalacturonase from Zygoascus hellenicus V25 and its potential application in fruit juice clarification. Food Sci Biotechnol 2016; 25:1379-1385. [PMID: 30263419 DOI: 10.1007/s10068-016-0215-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 06/12/2016] [Accepted: 06/23/2016] [Indexed: 11/28/2022] Open
Abstract
The purification and characterization of the extracellular polygalacturonase from Zygoascus hellenicus V25 submerged culture using orange peel waste were investigated. This polygalacturonase, with a molecular weight of 75.28 kDa, was purified to 16.89 purification fold with a recovery of 18.46% and specific activity of 2469.77 U/mg protein by ammonium sulfate precipitation, DEAE cellulose chromatography, and Sephadex G-100 gel filtration. The enzyme exhibited maximum activity at 60°C and pH 5.0 and was stable over a wide range of pH levels (3.0-11.0). Moreover, enzyme activity was enhanced by Cu2+ and cysteine, whereas it was strongly inhibited by Hg2+. The extent of enzymatic hydrolysis was negatively correlated with the degree of pectin esterification. Km and Vmax values of the polygalacturonase were 5.44 mg/mL and 61.73 μmol/(min·mg), respectively. The polygalacturonase was applied in the juice clarification of four fruits, and results showed that the percentage transmittance at 660 nm increased by 3.51, 4.36, 8.04, and 12.2%.
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Affiliation(s)
- Xiaohua Lu
- Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei University of Technology, Wuhan, 430068 China
| | - Jianguo Lin
- Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei University of Technology, Wuhan, 430068 China
| | - Changgao Wang
- Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei University of Technology, Wuhan, 430068 China
| | - Xin Du
- Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei University of Technology, Wuhan, 430068 China
| | - Jun Cai
- Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei University of Technology, Wuhan, 430068 China
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Dey TB, Adak S, Bhattacharya P, Banerjee R. Purification of polygalacturonase from Aspergillus awamori Nakazawa MTCC 6652 and its application in apple juice clarification. Lebensm Wiss Technol 2014. [DOI: 10.1016/j.lwt.2014.04.064] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Heterologous expression of polygalacturonase genes isolated from Galactomyces citri-aurantii IJ-1 in Pichia pastoris. J Microbiol 2012; 50:332-40. [PMID: 22538664 DOI: 10.1007/s12275-012-1290-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Accepted: 01/04/2012] [Indexed: 10/28/2022]
Abstract
ABSTACT: The objective of this work was to isolate the polygalacturonase genes of Galactomyces citri-aurantii IJ-1 harvested from rotten citrus peels and to heterologously express these genes in Pichia pastoris. Two polygalacturonase (PG) genes from G. citri-aurantii IJ-1 were obtained and tentatively named PG1 and PG2. The genes were cloned into pPICZαC, and expressed in Pichia pastoris strain GS115 with a native signal peptide or the α-factor secretion signal peptide of Saccharomyces cerevisiae. All of the recombinant proteins were successfully secreted into the culture media and confirmed as a single band with a molecular weight of 35 to 38 kDa by SDS-PAGE. The specific enzyme activities of recombinant PG1 and PG2 purified by His-tag affinity resin were 4,749 and 6,719 U/mg, respectively, with an optimal pH and temperature of pH 4.0 and 50°C. The Michaelis-Menten kinetic constants for PG1 and PG2, K (m), were confirmed to be 0.94 and 0.84 mM, respectively. In the presence of Mn(2+), the activity of PG1 and PG2 were increased to 160.8 and 146.4% of normal levels, respectively. In contrast, Cu(2+) and Fe(3+) acted as strong inhibitors to the PGs.
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Qureshi MS, Zhang D, Du G, Chen J. Improved production of polygalacturonate lyase by combining a pH and online methanol control strategy in a two-stage induction phase with a shift in the transition phase. J Ind Microbiol Biotechnol 2009; 37:323-33. [DOI: 10.1007/s10295-009-0677-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2009] [Accepted: 11/30/2009] [Indexed: 11/25/2022]
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Comparative biochemical and structural characterizations of fungal polygalacturonases. Biologia (Bratisl) 2008. [DOI: 10.2478/s11756-008-0018-y] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Gadre RV, Van Driessche G, Van Beeumen J, Bhat MK. Purification, characterisation and mode of action of an endo-polygalacturonase from the psychrophilic fungus Mucor flavus. Enzyme Microb Technol 2003. [DOI: 10.1016/s0141-0229(02)00291-0] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Degradation of cell wall materials from sweetpotato, cassava, and potato by a bacterial protopectinase and terminal sugar analysis of the resulting solubilized products. J Biosci Bioeng 2002. [DOI: 10.1016/s1389-1723(02)80056-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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SALVADOR LORENAD, SUGANUMA TOSHIHIKO, KITAHARA KANEFUMI, FUKUSHIGE YOSHIHITO, TANOUE HAYAO. Degradation of Cell Wall Materials from Sweetpotato, Cassava, and Potato by a Bacterial Protopectinase and Terminal Sugar Analysis of the Resulting Solubilized Products. J Biosci Bioeng 2002. [DOI: 10.1263/jbb.93.64] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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