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Recombinant protein expression in proteome-reduced cells under aerobic and oxygen-limited regimes

Biotechnol Bioeng. 2024-01; 
Alvaro R Lara, Jose Utrilla, Luz María Martínez, Niels Krausch, Lucas Kaspersetz, David Hidalgo, Nicolas Cruz-Bournazou, Peter Neubauer, Juan-Carlos Sigala, Guillermo Gosset, Jochen Büchs
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Molecular Biology Reagents … plasmid pUC57mini by GenScript (Piscataway). … protein fraction (UPF), which accounts for protein that is not present in the model's stoichiometric matrix, and FbFP (recombinant protein) … Get A Quote

摘要

Industrial cultures are hindered by the physiological complexity of the host and the limited mass transfer capacity of conventional bioreactors. In this study, a minimal cell approach was combined with genetic devices to overcome such issues. A flavin mononucleotide-based fluorescent protein (FbFP) was expressed in a proteome-reduced Escherichia coli (PR). When FbFP was expressed from a constitutive protein generator (CPG), the PR strain produced 47% and 35% more FbFP than its wild type (WT), in aerobic or oxygen-limited regimes, respectively. Metabolic and expression models predicted more efficient biomass formation at higher fluxes to FbFP, in agreement with these results. A microaerobic protein generator (MP... More

关键词

gene circuits, genetic amplifier, microaerobic expression, minimal cells, proteome reduction, µRAMOS‐BioLector
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