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Alternative Sigma Factor Over-Expression Enables Heterologous Expression of a Type II Polyketide Biosynthetic Pathway in Escherichia coli
BACKGROUND: Heterologous expression of bacterial biosynthetic gene clusters is currently an indispensable tool for characterizing biosynthetic pathways. Development of an effective, general heterologous expression system that can be applied to bioprospecting from metagenomic DNA will enable the disc...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3665592/ https://www.ncbi.nlm.nih.gov/pubmed/23724102 http://dx.doi.org/10.1371/journal.pone.0064858 |
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author | Stevens, David Cole Conway, Kyle R. Pearce, Nelson Villegas-Peñaranda, Luis Roberto Garza, Anthony G. Boddy, Christopher N. |
author_facet | Stevens, David Cole Conway, Kyle R. Pearce, Nelson Villegas-Peñaranda, Luis Roberto Garza, Anthony G. Boddy, Christopher N. |
author_sort | Stevens, David Cole |
collection | PubMed |
description | BACKGROUND: Heterologous expression of bacterial biosynthetic gene clusters is currently an indispensable tool for characterizing biosynthetic pathways. Development of an effective, general heterologous expression system that can be applied to bioprospecting from metagenomic DNA will enable the discovery of a wealth of new natural products. METHODOLOGY: We have developed a new Escherichia coli-based heterologous expression system for polyketide biosynthetic gene clusters. We have demonstrated the over-expression of the alternative sigma factor σ(54) directly and positively regulates heterologous expression of the oxytetracycline biosynthetic gene cluster in E. coli. Bioinformatics analysis indicates that σ(54) promoters are present in nearly 70% of polyketide and non-ribosomal peptide biosynthetic pathways. CONCLUSIONS: We have demonstrated a new mechanism for heterologous expression of the oxytetracycline polyketide biosynthetic pathway, where high-level pleiotropic sigma factors from the heterologous host directly and positively regulate transcription of the non-native biosynthetic gene cluster. Our bioinformatics analysis is consistent with the hypothesis that heterologous expression mediated by the alternative sigma factor σ(54) may be a viable method for the production of additional polyketide products. |
format | Online Article Text |
id | pubmed-3665592 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-36655922013-05-30 Alternative Sigma Factor Over-Expression Enables Heterologous Expression of a Type II Polyketide Biosynthetic Pathway in Escherichia coli Stevens, David Cole Conway, Kyle R. Pearce, Nelson Villegas-Peñaranda, Luis Roberto Garza, Anthony G. Boddy, Christopher N. PLoS One Research Article BACKGROUND: Heterologous expression of bacterial biosynthetic gene clusters is currently an indispensable tool for characterizing biosynthetic pathways. Development of an effective, general heterologous expression system that can be applied to bioprospecting from metagenomic DNA will enable the discovery of a wealth of new natural products. METHODOLOGY: We have developed a new Escherichia coli-based heterologous expression system for polyketide biosynthetic gene clusters. We have demonstrated the over-expression of the alternative sigma factor σ(54) directly and positively regulates heterologous expression of the oxytetracycline biosynthetic gene cluster in E. coli. Bioinformatics analysis indicates that σ(54) promoters are present in nearly 70% of polyketide and non-ribosomal peptide biosynthetic pathways. CONCLUSIONS: We have demonstrated a new mechanism for heterologous expression of the oxytetracycline polyketide biosynthetic pathway, where high-level pleiotropic sigma factors from the heterologous host directly and positively regulate transcription of the non-native biosynthetic gene cluster. Our bioinformatics analysis is consistent with the hypothesis that heterologous expression mediated by the alternative sigma factor σ(54) may be a viable method for the production of additional polyketide products. Public Library of Science 2013-05-28 /pmc/articles/PMC3665592/ /pubmed/23724102 http://dx.doi.org/10.1371/journal.pone.0064858 Text en © 2013 Stevens et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Stevens, David Cole Conway, Kyle R. Pearce, Nelson Villegas-Peñaranda, Luis Roberto Garza, Anthony G. Boddy, Christopher N. Alternative Sigma Factor Over-Expression Enables Heterologous Expression of a Type II Polyketide Biosynthetic Pathway in Escherichia coli |
title | Alternative Sigma Factor Over-Expression Enables Heterologous Expression of a Type II Polyketide Biosynthetic Pathway in Escherichia coli
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title_full | Alternative Sigma Factor Over-Expression Enables Heterologous Expression of a Type II Polyketide Biosynthetic Pathway in Escherichia coli
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title_fullStr | Alternative Sigma Factor Over-Expression Enables Heterologous Expression of a Type II Polyketide Biosynthetic Pathway in Escherichia coli
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title_full_unstemmed | Alternative Sigma Factor Over-Expression Enables Heterologous Expression of a Type II Polyketide Biosynthetic Pathway in Escherichia coli
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title_short | Alternative Sigma Factor Over-Expression Enables Heterologous Expression of a Type II Polyketide Biosynthetic Pathway in Escherichia coli
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title_sort | alternative sigma factor over-expression enables heterologous expression of a type ii polyketide biosynthetic pathway in escherichia coli |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3665592/ https://www.ncbi.nlm.nih.gov/pubmed/23724102 http://dx.doi.org/10.1371/journal.pone.0064858 |
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