作者
Ekaterina Kozaeva, Svetlana Volkova, Marta RA Matos, Mariela P Mezzina, Tune Wulff, Daniel C Volke, Lars K Nielsen, Pablo I Nikel
发表日期
2021/9/1
期刊
Metabolic Engineering
卷号
67
页码范围
373-386
出版商
Academic Press
简介
Pseudomonas putida is evolutionarily endowed with features relevant for bioproduction, especially under harsh operating conditions. The rich metabolic versatility of this species, however, comes at the price of limited formation of acetyl-coenzyme A (CoA) from sugar substrates. Since acetyl-CoA is a key metabolic precursor for a number of added-value products, in this work we deployed an in silico-guided rewiring program of central carbon metabolism for upgrading P. putida as a host for acetyl-CoA–dependent bioproduction. An updated kinetic model, integrating fluxomics and metabolomics datasets in addition to manually-curated information of enzyme mechanisms, identified targets that would lead to increased acetyl-CoA levels. Based on these predictions, a set of plasmids based on clustered regularly interspaced short palindromic repeats (CRISPR) and dead CRISPR-associated protein 9 (dCas9) was …
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