ArticleMicrobial biotechnology2024
Formate from THF-C1 metabolism induces the AOX1 promoter in formate dehydrogenase-deficient Komagataella phaffii.
Article in Microbial biotechnology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Yarrowia lipolytica and Komagataella phaffii (Pichia pastoris) as Hosts for Heterologous Expression of Lipases.Methods in molecular biology (Clifton, N.J.) · 2027Article
- Advances in Key Genetic Elements and Strategies for High-Yield Heterologous Protein Expression inJournal of fungi (Basel, Switzerland) · 2026Review
- Engineering serine metabolism to enhance AOX1 promoter self-induction in formate dehydrogenase-deficient Komagataella phaffii.Microbial cell factories · 2026Article
- Article
- Sorbitol Uptake and Oxygen Transfer Shape AOX1 Promoter Induction in Formate Dehydrogenase-Deficient Komagataella phaffii.Microbial biotechnology · 2025Article
- Formate from THF-C1 metabolism induces the AOX1 promoter in formate dehydrogenase-deficient Komagataella phaffii.Microbial biotechnology · 2024Article
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3 authors.
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Abstract
In Komagataella phaffii (Pichia pastoris), formate is a recognized alternative inducer to methanol for expression systems based on the AOX1 promoter (pAOX1). By disrupting the formate dehydrogenase encoding FDH1 gene, we converted such a system into a self-induced one, as adding any inducer in the culture medium is no longer requested for pAOX1 induction. In cells, formate is generated from serine through the THF-C1 metabolism, and it cannot be converted into carbon dioxide in a FdhKO strain. Under non-repressive culture conditions, such as on sorbitol, the intracellular formate generated from the THF-C1 metabolism is sufficient to induce pAOX1 and initiate protein synthesis. This was evidenced for two model proteins, namely intracellular eGFP and secreted CalB lipase from C. antarctica. Similar protein productivities were obtained for a FdhKO strain on sorbitol and a non-disrupted strain on sorbitol-methanol. Considering a K. Phaffii FdhKO strain as a workhorse for recombinant protein synthesis paves the way for the further development of methanol-free processes in K. phaffii.
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