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Cell-Surface Displayed Expression of Trehalose Synthase from Pseudomonas putida ATCC 47054 in Pichia Pastoris Using Pir1p as an Anchor Protein
Yeast cell-surface display technologies have been widely applied in the fields of food, medicine, and feed enzyme production, including lipase, α-amylase, and endoglucanase. In this study, a treS gene was fused with the yeast cell-surface anchor protein gene Pir1p by overlap PCR, the Pir1p-treS fusi...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Frontiers Media S.A.
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5742630/ https://www.ncbi.nlm.nih.gov/pubmed/29312257 http://dx.doi.org/10.3389/fmicb.2017.02583 |
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author | Yang, Shaojie Lv, Xin Wang, Xihui Wang, Junqing Wang, Ruiming Wang, Tengfei |
author_facet | Yang, Shaojie Lv, Xin Wang, Xihui Wang, Junqing Wang, Ruiming Wang, Tengfei |
author_sort | Yang, Shaojie |
collection | PubMed |
description | Yeast cell-surface display technologies have been widely applied in the fields of food, medicine, and feed enzyme production, including lipase, α-amylase, and endoglucanase. In this study, a treS gene was fused with the yeast cell-surface anchor protein gene Pir1p by overlap PCR, the Pir1p-treS fusion gene was ligated into pPICZαA and pGAPZαA and transformed into P. pastoris GS115 to obtain recombinant yeast strains that displays trehalose synthase(TreS) on its cell surface as an efficient and recyclable whole-cell biocatalyst. Firstly, the enhanced green fluorescence protein gene (egfp) was used as the reporter protein to fusion the Pir1p gene and treS gene to construct the recombinant plasmids containing treS-egfg-Pir1p fusion gene, and electrotransformed into P. pastoris GS115 to analyze the surface display characteristics of fusion gene by Western blot, fluorescence microscopy and flow cytometry. The analysis shown that the treS-egfg-Pir1p fusion protein can be successfully displayed on the surface of yeast cell, and the expression level increased with the extension of fermentation time. These results implied that the Pir1p-treS fusion gene can be well displayed on the cell surface. Secondly, in order to obtain surface active cells with high enzyme activity, the enzymatic properties of TreS displayed on the cell surface was analyzed, and the fermentation process of recombinant P. patoris GS115 containing pPICZαA-Pir1p-treS and pGAPZαA-Pir1p-treS was studied respectively. The cell surface display TreS was stable over a broad range of temperatures (10–45°C) and pH (6.0–8.5). The activity of TreS displayed on cell surface respectively reached 1,108 Ug(−1) under P(AOX1) control for 150 h, and 1,109 Ug(−1) under P(GAP) control for 75h in a 5 L fermenter, respectively. Lastly, the cell-surface displayed TreS was used to product trehalose using high maltose syrup as substrate at pH 8.0 and 15°C. The surface display TreS cells can be recycled for three times and the weight conversion rate of trehalose was more than 60%. This paper revealed that the TreS can display on the P. pastoris cell surface and still had a higher catalytic activity after recycled three times, which was suitable for industrial application, especially the preparation of pharmaceutical grade trehalose products. |
format | Online Article Text |
id | pubmed-5742630 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-57426302018-01-08 Cell-Surface Displayed Expression of Trehalose Synthase from Pseudomonas putida ATCC 47054 in Pichia Pastoris Using Pir1p as an Anchor Protein Yang, Shaojie Lv, Xin Wang, Xihui Wang, Junqing Wang, Ruiming Wang, Tengfei Front Microbiol Microbiology Yeast cell-surface display technologies have been widely applied in the fields of food, medicine, and feed enzyme production, including lipase, α-amylase, and endoglucanase. In this study, a treS gene was fused with the yeast cell-surface anchor protein gene Pir1p by overlap PCR, the Pir1p-treS fusion gene was ligated into pPICZαA and pGAPZαA and transformed into P. pastoris GS115 to obtain recombinant yeast strains that displays trehalose synthase(TreS) on its cell surface as an efficient and recyclable whole-cell biocatalyst. Firstly, the enhanced green fluorescence protein gene (egfp) was used as the reporter protein to fusion the Pir1p gene and treS gene to construct the recombinant plasmids containing treS-egfg-Pir1p fusion gene, and electrotransformed into P. pastoris GS115 to analyze the surface display characteristics of fusion gene by Western blot, fluorescence microscopy and flow cytometry. The analysis shown that the treS-egfg-Pir1p fusion protein can be successfully displayed on the surface of yeast cell, and the expression level increased with the extension of fermentation time. These results implied that the Pir1p-treS fusion gene can be well displayed on the cell surface. Secondly, in order to obtain surface active cells with high enzyme activity, the enzymatic properties of TreS displayed on the cell surface was analyzed, and the fermentation process of recombinant P. patoris GS115 containing pPICZαA-Pir1p-treS and pGAPZαA-Pir1p-treS was studied respectively. The cell surface display TreS was stable over a broad range of temperatures (10–45°C) and pH (6.0–8.5). The activity of TreS displayed on cell surface respectively reached 1,108 Ug(−1) under P(AOX1) control for 150 h, and 1,109 Ug(−1) under P(GAP) control for 75h in a 5 L fermenter, respectively. Lastly, the cell-surface displayed TreS was used to product trehalose using high maltose syrup as substrate at pH 8.0 and 15°C. The surface display TreS cells can be recycled for three times and the weight conversion rate of trehalose was more than 60%. This paper revealed that the TreS can display on the P. pastoris cell surface and still had a higher catalytic activity after recycled three times, which was suitable for industrial application, especially the preparation of pharmaceutical grade trehalose products. Frontiers Media S.A. 2017-12-21 /pmc/articles/PMC5742630/ /pubmed/29312257 http://dx.doi.org/10.3389/fmicb.2017.02583 Text en Copyright © 2017 Yang, Lv, Wang, Wang, Wang and Wang. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Microbiology Yang, Shaojie Lv, Xin Wang, Xihui Wang, Junqing Wang, Ruiming Wang, Tengfei Cell-Surface Displayed Expression of Trehalose Synthase from Pseudomonas putida ATCC 47054 in Pichia Pastoris Using Pir1p as an Anchor Protein |
title | Cell-Surface Displayed Expression of Trehalose Synthase from Pseudomonas putida ATCC 47054 in Pichia Pastoris Using Pir1p as an Anchor Protein |
title_full | Cell-Surface Displayed Expression of Trehalose Synthase from Pseudomonas putida ATCC 47054 in Pichia Pastoris Using Pir1p as an Anchor Protein |
title_fullStr | Cell-Surface Displayed Expression of Trehalose Synthase from Pseudomonas putida ATCC 47054 in Pichia Pastoris Using Pir1p as an Anchor Protein |
title_full_unstemmed | Cell-Surface Displayed Expression of Trehalose Synthase from Pseudomonas putida ATCC 47054 in Pichia Pastoris Using Pir1p as an Anchor Protein |
title_short | Cell-Surface Displayed Expression of Trehalose Synthase from Pseudomonas putida ATCC 47054 in Pichia Pastoris Using Pir1p as an Anchor Protein |
title_sort | cell-surface displayed expression of trehalose synthase from pseudomonas putida atcc 47054 in pichia pastoris using pir1p as an anchor protein |
topic | Microbiology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5742630/ https://www.ncbi.nlm.nih.gov/pubmed/29312257 http://dx.doi.org/10.3389/fmicb.2017.02583 |
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