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Abstract:

The microbial production of biofuels and other added-value chemicals is often limited by the intrinsic toxicity of these compounds. The phasin PhaP from the soil bacterium Azotobacter sp. strain FA8 is a polyhydroxyalkanoate granuleassociated protein that protects recombinant Escherichia coli against several kinds of stress. PhaP enhances growth and poly(3-hydroxybutyrate) synthesis in polymerproducing recombinant strains and reduces the formation of inclusion bodies during overproduction of heterologous proteins. In this work, the heterologous expression of this phasin in E. coli was used as a strategy to increase tolerance to several biotechnologically relevant chemicals. PhaP was observed to enhance bacterial fitness in the presence of biofuels, such as ethanol and butanol, and other chemicals, such as 1,3-propanediol. The effect of PhaP was also studied in a groELS mutant strain, in which both GroELS and PhaP were observed to exert a beneficial effect that varied depending on the chemical tested. Lastly, the potential of PhaP and GroEL to enhance the accumulation of ethanol or 1,3-propanediol was analyzed in recombinant E. coli. Strains that overexpressed either groEL or phaP had increased growth, reflected in a higher final biomass and product titer than the control strain. Taken together, these results add a novel application to the already multifaceted phasin protein group, suggesting that expression of these proteins or other chaperones can be used to improve the production of biofuels and other chemicals. © 2017 American Society for Microbiology.

Registro:

Documento: Artículo
Título:A new player in the biorefineries field: Phasin PhaP enhances tolerance to solvents and boosts ethanol and 1,3-propanediol synthesis in Escherichia coli
Autor:Mezzina, M.P.; Álvarez, D.S.; Egoburo, D.E.; Peña, R.D.; Nikel, P.I.; Pettinari, M.J.
Filiación:Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Departamento de Química Biológica, Buenos Aires, Argentina
Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales, CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
Palabras clave:1,3-propanediol; Butanol; Chaperone; Escherichia coli; Ethanol; GroEL; Metabolic engineering; PhaP; Biofuels; Biosynthesis; Butenes; Escherichia coli; Ethanol; Metabolic engineering; Recombinant proteins; 1 ,3 propanediol; Chaperone; Granule-associated proteins; GroEL; Heterologous expression; PhaP; Poly-3-hydroxybutyrate; Recombinant Escherichia coli; Organic solvents; bioengineering; biofuel; biomass; coliform bacterium; ethanol; fitness; gene expression; growth rate; protein; recombination; solvent; Azotobacter; Bacteria (microorganisms); Escherichia coli; 1,3-propanediol; alcohol; bacterial protein; biofuel; phasin; plant lectin; propanediol derivative; Azotobacter; Escherichia coli; genetics; metabolism; Azotobacter; Bacterial Proteins; Biofuels; Escherichia coli; Ethanol; Plant Lectins; Propylene Glycols
Año:2017
Volumen:83
Número:14
DOI: http://dx.doi.org/10.1128/AEM.00662-17
Título revista:Applied and Environmental Microbiology
Título revista abreviado:Appl. Environ. Microbiol.
ISSN:00992240
CODEN:AEMID
CAS:alcohol, 64-17-5; 1,3-propanediol; Bacterial Proteins; Biofuels; Ethanol; phasin; Plant Lectins; Propylene Glycols
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00992240_v83_n14_p_Mezzina

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Citas:

---------- APA ----------
Mezzina, M.P., Álvarez, D.S., Egoburo, D.E., Peña, R.D., Nikel, P.I. & Pettinari, M.J. (2017) . A new player in the biorefineries field: Phasin PhaP enhances tolerance to solvents and boosts ethanol and 1,3-propanediol synthesis in Escherichia coli. Applied and Environmental Microbiology, 83(14).
http://dx.doi.org/10.1128/AEM.00662-17
---------- CHICAGO ----------
Mezzina, M.P., Álvarez, D.S., Egoburo, D.E., Peña, R.D., Nikel, P.I., Pettinari, M.J. "A new player in the biorefineries field: Phasin PhaP enhances tolerance to solvents and boosts ethanol and 1,3-propanediol synthesis in Escherichia coli" . Applied and Environmental Microbiology 83, no. 14 (2017).
http://dx.doi.org/10.1128/AEM.00662-17
---------- MLA ----------
Mezzina, M.P., Álvarez, D.S., Egoburo, D.E., Peña, R.D., Nikel, P.I., Pettinari, M.J. "A new player in the biorefineries field: Phasin PhaP enhances tolerance to solvents and boosts ethanol and 1,3-propanediol synthesis in Escherichia coli" . Applied and Environmental Microbiology, vol. 83, no. 14, 2017.
http://dx.doi.org/10.1128/AEM.00662-17
---------- VANCOUVER ----------
Mezzina, M.P., Álvarez, D.S., Egoburo, D.E., Peña, R.D., Nikel, P.I., Pettinari, M.J. A new player in the biorefineries field: Phasin PhaP enhances tolerance to solvents and boosts ethanol and 1,3-propanediol synthesis in Escherichia coli. Appl. Environ. Microbiol. 2017;83(14).
http://dx.doi.org/10.1128/AEM.00662-17