Elimination of D-lactate synthesis increases poly(3-hydroxybutyrate) and ethanol synthesis from glycerol and affects cofactor distribution in recombinant Escherichia coli
- Autores
- Nikel, P.I.; Giordano, A.M.; De Almeida, A.; Godoy, M.S.; Pettinari, M.J.
- Año de publicación
- 2010
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The effect of eliminating D-lactate synthesis in poly(3-hydroxybutyrate) (PHB)-accumulating recombinant Escherichia coli (K24K) was analyzed using glycerol as a substrate. K24KL, an ldhA derivative, produced more biomass and had altered carbon partitioning among the metabolic products, probably due to the increased availability of carbon precursors and reducing power. This resulted in a significant increase of PHB and ethanol synthesis and a decrease in acetate production. Cofactor measurements revealed that cultures of K24K and K24KL had a high intracellular NADPH content and that the NADPH/NADP+ ratio was higher than the NADH/NAD+ ratio. The ldhA mutation affected cofactor distribution, resulting in a more reduced intracellular state, mainly due to a further increase in NADPH/NADP+. In 60-h fed-batch cultures, K24KL reached 41.9 g · liter-1 biomass and accumulated PHB up to 63% ± 1% (wt/wt), with a PHB yield on glycerol of 0.41 ± 0.03 g · g-1, the highest reported using this substrate. © 2010, American Society for Microbiology.
Fil:De Almeida, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Pettinari, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. - Fuente
- Appl. Environ. Microbiol. 2010;76(22):7400-7406
- Materia
-
Carbon partitioning
Carbon precursors
Cofactors
D-lactate
Fed-batch cultures
Metabolic products
Poly(3-hydroxybutyrate)
Recombinant Escherichia coli
Reducing power
Batch cell culture
Escherichia coli
Ethanol
Substrates
Glycerol
alcohol
carbon
glycerol
hydroxybutyric acid
lactate dehydrogenase
lactic acid
nicotinamide adenine dinucleotide
nicotinamide adenine dinucleotide phosphate
poly(3 hydroxybutyric acid)
poly-beta-hydroxybutyrate
polyester
alcohol
biomass
ester
ethanol
fecal coliform
partitioning
recombination
article
biomass
bioreactor
chemistry
Escherichia coli
genetics
growth, development and aging
metabolism
time
Biomass
Bioreactors
Carbon
Escherichia coli
Ethanol
Glycerol
Hydroxybutyrates
Lactate Dehydrogenases
Lactic Acid
Metabolic Networks and Pathways
NAD
NADP
Polyesters
Time Factors
Escherichia coli - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/2.5/ar
- Repositorio
- Institución
- Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
- OAI Identificador
- paperaa:paper_00992240_v76_n22_p7400_Nikel
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Elimination of D-lactate synthesis increases poly(3-hydroxybutyrate) and ethanol synthesis from glycerol and affects cofactor distribution in recombinant Escherichia coliNikel, P.I.Giordano, A.M.De Almeida, A.Godoy, M.S.Pettinari, M.J.Carbon partitioningCarbon precursorsCofactorsD-lactateFed-batch culturesMetabolic productsPoly(3-hydroxybutyrate)Recombinant Escherichia coliReducing powerBatch cell cultureEscherichia coliEthanolSubstratesGlycerolalcoholcarbonglycerolhydroxybutyric acidlactate dehydrogenaselactic acidnicotinamide adenine dinucleotidenicotinamide adenine dinucleotide phosphatepoly(3 hydroxybutyric acid)poly-beta-hydroxybutyratepolyesteralcoholbiomassesterethanolfecal coliformpartitioningrecombinationarticlebiomassbioreactorchemistryEscherichia coligeneticsgrowth, development and agingmetabolismtimeBiomassBioreactorsCarbonEscherichia coliEthanolGlycerolHydroxybutyratesLactate DehydrogenasesLactic AcidMetabolic Networks and PathwaysNADNADPPolyestersTime FactorsEscherichia coliThe effect of eliminating D-lactate synthesis in poly(3-hydroxybutyrate) (PHB)-accumulating recombinant Escherichia coli (K24K) was analyzed using glycerol as a substrate. K24KL, an ldhA derivative, produced more biomass and had altered carbon partitioning among the metabolic products, probably due to the increased availability of carbon precursors and reducing power. This resulted in a significant increase of PHB and ethanol synthesis and a decrease in acetate production. Cofactor measurements revealed that cultures of K24K and K24KL had a high intracellular NADPH content and that the NADPH/NADP+ ratio was higher than the NADH/NAD+ ratio. The ldhA mutation affected cofactor distribution, resulting in a more reduced intracellular state, mainly due to a further increase in NADPH/NADP+. In 60-h fed-batch cultures, K24KL reached 41.9 g · liter-1 biomass and accumulated PHB up to 63% ± 1% (wt/wt), with a PHB yield on glycerol of 0.41 ± 0.03 g · g-1, the highest reported using this substrate. © 2010, American Society for Microbiology.Fil:De Almeida, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:Pettinari, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.2010info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12110/paper_00992240_v76_n22_p7400_NikelAppl. Environ. Microbiol. 2010;76(22):7400-7406reponame:Biblioteca Digital (UBA-FCEN)instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesinstacron:UBA-FCENenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/2.5/ar2025-09-29T13:43:09Zpaperaa:paper_00992240_v76_n22_p7400_NikelInstitucionalhttps://digital.bl.fcen.uba.ar/Universidad públicaNo correspondehttps://digital.bl.fcen.uba.ar/cgi-bin/oaiserver.cgiana@bl.fcen.uba.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:18962025-09-29 13:43:10.371Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesfalse |
dc.title.none.fl_str_mv |
Elimination of D-lactate synthesis increases poly(3-hydroxybutyrate) and ethanol synthesis from glycerol and affects cofactor distribution in recombinant Escherichia coli |
title |
Elimination of D-lactate synthesis increases poly(3-hydroxybutyrate) and ethanol synthesis from glycerol and affects cofactor distribution in recombinant Escherichia coli |
spellingShingle |
Elimination of D-lactate synthesis increases poly(3-hydroxybutyrate) and ethanol synthesis from glycerol and affects cofactor distribution in recombinant Escherichia coli Nikel, P.I. Carbon partitioning Carbon precursors Cofactors D-lactate Fed-batch cultures Metabolic products Poly(3-hydroxybutyrate) Recombinant Escherichia coli Reducing power Batch cell culture Escherichia coli Ethanol Substrates Glycerol alcohol carbon glycerol hydroxybutyric acid lactate dehydrogenase lactic acid nicotinamide adenine dinucleotide nicotinamide adenine dinucleotide phosphate poly(3 hydroxybutyric acid) poly-beta-hydroxybutyrate polyester alcohol biomass ester ethanol fecal coliform partitioning recombination article biomass bioreactor chemistry Escherichia coli genetics growth, development and aging metabolism time Biomass Bioreactors Carbon Escherichia coli Ethanol Glycerol Hydroxybutyrates Lactate Dehydrogenases Lactic Acid Metabolic Networks and Pathways NAD NADP Polyesters Time Factors Escherichia coli |
title_short |
Elimination of D-lactate synthesis increases poly(3-hydroxybutyrate) and ethanol synthesis from glycerol and affects cofactor distribution in recombinant Escherichia coli |
title_full |
Elimination of D-lactate synthesis increases poly(3-hydroxybutyrate) and ethanol synthesis from glycerol and affects cofactor distribution in recombinant Escherichia coli |
title_fullStr |
Elimination of D-lactate synthesis increases poly(3-hydroxybutyrate) and ethanol synthesis from glycerol and affects cofactor distribution in recombinant Escherichia coli |
title_full_unstemmed |
Elimination of D-lactate synthesis increases poly(3-hydroxybutyrate) and ethanol synthesis from glycerol and affects cofactor distribution in recombinant Escherichia coli |
title_sort |
Elimination of D-lactate synthesis increases poly(3-hydroxybutyrate) and ethanol synthesis from glycerol and affects cofactor distribution in recombinant Escherichia coli |
dc.creator.none.fl_str_mv |
Nikel, P.I. Giordano, A.M. De Almeida, A. Godoy, M.S. Pettinari, M.J. |
author |
Nikel, P.I. |
author_facet |
Nikel, P.I. Giordano, A.M. De Almeida, A. Godoy, M.S. Pettinari, M.J. |
author_role |
author |
author2 |
Giordano, A.M. De Almeida, A. Godoy, M.S. Pettinari, M.J. |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
Carbon partitioning Carbon precursors Cofactors D-lactate Fed-batch cultures Metabolic products Poly(3-hydroxybutyrate) Recombinant Escherichia coli Reducing power Batch cell culture Escherichia coli Ethanol Substrates Glycerol alcohol carbon glycerol hydroxybutyric acid lactate dehydrogenase lactic acid nicotinamide adenine dinucleotide nicotinamide adenine dinucleotide phosphate poly(3 hydroxybutyric acid) poly-beta-hydroxybutyrate polyester alcohol biomass ester ethanol fecal coliform partitioning recombination article biomass bioreactor chemistry Escherichia coli genetics growth, development and aging metabolism time Biomass Bioreactors Carbon Escherichia coli Ethanol Glycerol Hydroxybutyrates Lactate Dehydrogenases Lactic Acid Metabolic Networks and Pathways NAD NADP Polyesters Time Factors Escherichia coli |
topic |
Carbon partitioning Carbon precursors Cofactors D-lactate Fed-batch cultures Metabolic products Poly(3-hydroxybutyrate) Recombinant Escherichia coli Reducing power Batch cell culture Escherichia coli Ethanol Substrates Glycerol alcohol carbon glycerol hydroxybutyric acid lactate dehydrogenase lactic acid nicotinamide adenine dinucleotide nicotinamide adenine dinucleotide phosphate poly(3 hydroxybutyric acid) poly-beta-hydroxybutyrate polyester alcohol biomass ester ethanol fecal coliform partitioning recombination article biomass bioreactor chemistry Escherichia coli genetics growth, development and aging metabolism time Biomass Bioreactors Carbon Escherichia coli Ethanol Glycerol Hydroxybutyrates Lactate Dehydrogenases Lactic Acid Metabolic Networks and Pathways NAD NADP Polyesters Time Factors Escherichia coli |
dc.description.none.fl_txt_mv |
The effect of eliminating D-lactate synthesis in poly(3-hydroxybutyrate) (PHB)-accumulating recombinant Escherichia coli (K24K) was analyzed using glycerol as a substrate. K24KL, an ldhA derivative, produced more biomass and had altered carbon partitioning among the metabolic products, probably due to the increased availability of carbon precursors and reducing power. This resulted in a significant increase of PHB and ethanol synthesis and a decrease in acetate production. Cofactor measurements revealed that cultures of K24K and K24KL had a high intracellular NADPH content and that the NADPH/NADP+ ratio was higher than the NADH/NAD+ ratio. The ldhA mutation affected cofactor distribution, resulting in a more reduced intracellular state, mainly due to a further increase in NADPH/NADP+. In 60-h fed-batch cultures, K24KL reached 41.9 g · liter-1 biomass and accumulated PHB up to 63% ± 1% (wt/wt), with a PHB yield on glycerol of 0.41 ± 0.03 g · g-1, the highest reported using this substrate. © 2010, American Society for Microbiology. Fil:De Almeida, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pettinari, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. |
description |
The effect of eliminating D-lactate synthesis in poly(3-hydroxybutyrate) (PHB)-accumulating recombinant Escherichia coli (K24K) was analyzed using glycerol as a substrate. K24KL, an ldhA derivative, produced more biomass and had altered carbon partitioning among the metabolic products, probably due to the increased availability of carbon precursors and reducing power. This resulted in a significant increase of PHB and ethanol synthesis and a decrease in acetate production. Cofactor measurements revealed that cultures of K24K and K24KL had a high intracellular NADPH content and that the NADPH/NADP+ ratio was higher than the NADH/NAD+ ratio. The ldhA mutation affected cofactor distribution, resulting in a more reduced intracellular state, mainly due to a further increase in NADPH/NADP+. In 60-h fed-batch cultures, K24KL reached 41.9 g · liter-1 biomass and accumulated PHB up to 63% ± 1% (wt/wt), with a PHB yield on glycerol of 0.41 ± 0.03 g · g-1, the highest reported using this substrate. © 2010, American Society for Microbiology. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/20.500.12110/paper_00992240_v76_n22_p7400_Nikel |
url |
http://hdl.handle.net/20.500.12110/paper_00992240_v76_n22_p7400_Nikel |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by/2.5/ar |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
Appl. Environ. Microbiol. 2010;76(22):7400-7406 reponame:Biblioteca Digital (UBA-FCEN) instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales instacron:UBA-FCEN |
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Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales |
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UBA-FCEN |
institution |
UBA-FCEN |
repository.name.fl_str_mv |
Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales |
repository.mail.fl_str_mv |
ana@bl.fcen.uba.ar |
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