ArticleJournal of biological engineering2024
Avoiding overflow metabolite formation in Komagataella phaffii fermentations to enhance recombinant protein production.
Article in Journal of biological engineering, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Molecular engineering of Komagataella phaffii for venom toxin production.Applied microbiology and biotechnology · 2026Review
- Balancing Doses of EL222 and Light Improves Optogenetic Induction of Protein Production in Komagataella phaffii.Biotechnology and bioengineering · 2025Article
- Primary high-throughput screening of engineered phytases by online monitoring of the oxygen transfer rate of Komagataella phaffii.Microbial cell factories · 2025Article
- A toolkit for facilitating markerless integration of expression cassettes in Komagataella phaffii via CRISPR/Cas9.Microbial cell factories · 2025Article
- A novel multiparameter sensor for shake flask cultivations: Online biomass, dissolved oxygen, and fluorescence monitoring for comprehensive bioprocess characterization.Biotechnology progressArticle
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Authors and funding
7 authors.
Funding
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Abstract
backgroundKomagataella phaffii (K. phaffii), formerly known as Pichia pastoris, is a widely utilized yeast for recombinant protein production. However, due to the formation of overflow metabolites, carbon yields may be reduced and product recovery becomes challenging. This study investigates the impact of oxygen availability, different glucose concentrations and feeding strategies on overflow metabolite formation and recombinant protein production in K. phaffii.
resultsHigh glucose concentrations in batch fermentation, as applied in literature, lead to substantial ethanol accumulation, adversely affecting biomass yield and product formation. Increasing dissolved oxygen setpoints does not significantly reduce ethanol formation, indicating that glucose surplus, rather than oxygen availability, drives overflow metabolism. Decreasing the initial glucose concentration to 5 g/L and adapting the feeding strategy of the fed-batch phase, effectively mitigates overflow metabolite formation, improving biomass yield by up to 9% and product concentration by 40% without increasing process time.
conclusionsThese findings underscore the importance of a suitable glucose-feeding strategy in K. phaffii fermentation processes and highlight the detrimental effects of overflow metabolites on productivity. By optimizing carbon source utilization, it is possible to enhance fermentation efficiency and recombinant protein production with K. phaffii.
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