Balancing glucose and oxygen uptake rates to enable high amorpha-4,11-diene production in Escherichia coli via the methylerythritol phosphate pathway.
Biotechnol Bioeng
; 118(3): 1317-1329, 2021 03.
Article
em En
| MEDLINE
| ID: mdl-33331668
ABSTRACT
Amorpha-4,11-diene (AMD4,11) is a precursor to artemisinin, a potent antimalarial drug that is traditionally extracted from the shrubs of Artemisia annua. Despite significant prior efforts to produce artemisinin and its precursors through biotechnology, there remains a dire need for more efficient biosynthetic routes for its production. Here, we describe the optimization of key process conditions for an Escherichia coli strain producing AMD4,11 via the native methylerythritol phosphate (MEP) pathway. By studying the interplay between glucose uptake rates and oxygen demand, we were able to identify optimal conditions for increasing carbon flux through the MEP pathway by manipulating the availability of NADPH required for terpenoid production. Installation of an optimal qO2 /qglucose led to a 6.7-fold increase in product titers and a 6.5-fold increase in carbon yield.
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Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Oxigênio
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Consumo de Oxigênio
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Fosfatos Açúcares
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Eritritol
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Escherichia coli
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Sesquiterpenos Policíclicos
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Glucose
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Antimaláricos
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article