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Harnessing Rubisco oxygenation reaction for advancing sustainable biotechnology

Establishing a bio-based economy requires the development of novel biorefineries, where bacterial cell factories are employed for producing added-value compounds from cheap, renewable substrates. CO2 is the ideal feedstock, being... ver más

30/04/2025

TECHNICAL UNIVERSI...

215K€

Presupuesto del proyecto: 215K€

Líder del proyecto

DANMARKS TEKNISKE UNIVERSITET No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

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Financiación concedida El organismo HORIZON EUROPE notifico la concesión del proyecto el día 2022-07-01

Línea de financiación objetivo El proyecto se financió a través de la siguiente ayuda:

HORIZON-MSCA-2021-PF-01-01: MSCA Postdoctoral Fellowships 2021

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TECHNICAL UNIVERSITY OF DENM...

214.93K€ | Lider

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Duración del proyecto: 33 meses Fecha Inicio: 2022-07-01
Fecha Fin: 2025-04-30

Líder del proyecto

DANMARKS TEKNISKE UNIVERSITET

TRL 4-5

Presupuesto del proyecto 215K€

Descripción del proyecto Establishing a bio-based economy requires the development of novel biorefineries, where bacterial cell factories are employed for producing added-value compounds from cheap, renewable substrates. CO2 is the ideal feedstock, being the most abundant and virtually unlimited carbon-source on Earth. Novel, highly promising biorefineries aim to utilize genetically engineered bacteria to convert renewable energies and atmospheric CO2 into fuels and chemicals. The enzyme Ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) is the main responsible of CO2 fixation in the biosphere via the Calvin-Benson-Bassham cycle. Despite its wide distribution in the tree of Life, Rubisco is a rather inaccurate enzyme, presenting a tendency to perform an oxygenation side-reaction which results in the formation of 2-phosphoglycolate (2PG). While re-assimilation of 2PG in central metabolism results in net CO2 loss, it can serve as a precursor of glycolate, an attractive, versatile platform chemical. Here, I propose to exploit the sloppiness of Rubisco to implement a novel biorefinery for glycolate production from CO2. Ultimately, I aim to demonstrate feasible microbial synthesis glycolate, where engineered bacterial platforms synthesize this molecule directly from CO2 (as carbon source) and renewable H2 or formate (as energy source). This overarching goal will be pursued through three different, complementary objectives, including: in vivo screening of new, recently described Rubisco isoforms via ad hoc designed 'selection strain'; in vivo directed evolution of the best performing Rubisco isoforms for improving the inherent oxygenation activity; engineering of natural (Cupriavidus necator) and synthetic (Escherichia coli) bacteria autotrophs as cell factories for this process, which will be tested in gas-controlled lab-scale reactors. Eventually, such a novel biorefinery concept will open unprecedented possibilities for the use of CO2 as feedstock for a true biobased economy.

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