ArticleBiotechnology for biofuels and bioproducts2024
Enhancing D-lactic acid production by optimizing the expression of D-LDH gene in methylotrophic yeast Komagataella phaffii.
Article in Biotechnology for biofuels and bioproducts, 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.
- Systematic optimization ofEngineering microbiology · 2026Review
- Comparative analysis of heterologous lactate dehydrogenase expression in Ogataea polymorpha for enhanced L-Lactic acid production.Journal of biological engineering · 2026Article
- Production of β-carotene from methanol via rDNA-targeted multi-gene integration and selection with increasing antibiotic concentrations in Komagataella phaffii.World journal of microbiology & biotechnology · 2026Article
- Systematic metabolic engineering of Komagataella phaffii for methanol-to-lactate bioconversion.Bioprocess and biosystems engineering · 2026Article
- Improvement of D-lactic acid production from methanol by metabolically engineeredMetabolic engineering communications · 2025Article
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4 authors.
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Abstract
backgroundCurrently, efficient technologies producing useful chemicals from alternative carbon resources, such as methanol, to replace petroleum are in demand. The methanol-utilizing yeast, Komagataella phaffii, is a promising microorganism to produce chemicals from methanol using environment-friendly microbial processes. In this study, to achieve efficient D-lactic acid production from methanol, we investigated a combination of D-lactate dehydrogenase (D-LDH) genes and promoters in K. phaffii. The yeast strain was constructed by integrating a gene cassette containing the identified gene and promoter into the rDNA locus of K. phaffii, followed by post-transformational gene amplification. Subsequently, D-lactic acid production from methanol was evaluated.
resultsAmong the five D-LDH genes and eight promoters tested, the combination of LlDLDH derived from Leuconostoc lactis and CAT1 and FLD1 promoters was suitable for expression in K. phaffii. GS115_CFL/Z3/04, the best-engineered strain constructed via integration of LlDLDH linked to CAT1 and FLD1 promoters into the rDNA locus and post-transformational gene amplification, produced 5.18 g/L D-lactic acid from methanol. To the best of our knowledge, the amount of D-lactic acid from methanol produced by this engineered yeast is the highest reported value to date when utilizing methanol as the sole carbon source.
conclusionsThis study demonstrated the effectiveness of combining different enzyme genes and promoters using multiple promoters with different induction and repression conditions, integrating the genes into the rDNA locus, and further amplifying the genes after transformation in K. phaffii. Using our established method, other K. phaffii strains can be engineered to produce various useful chemicals in the future.
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