ArticleBMC genomics2020
The expression of the acarbose biosynthesis gene cluster in Actinoplanes sp. SE50/110 is dependent on the growth phase.
Article in BMC genomics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed, 12 citations in OpenAlex.
- Integrated multi-dimensional modeling of non-model bacteria identifies engineering targets for acarbose biosynthesis optimization.Cell reports methods · 2026Article
- Characterization of RcgA and RcgR, two rhizobial proteins involved in the modulation of plasmid transfer.Microbiology spectrum · 2026Article
- The Transcriptional Regulator Crt1 is Involved in The Pathogenic Lifestyle ofPolish journal of microbiology · 2026Article
- Anticancer compounds from Streptomyces: insights from metagenomics and mechanistic perspective.Folia microbiologica · 2025Review
- Enhancement of Acarbose Production inJournal of agricultural and food chemistry · 2025Article
- Targeting Transcriptional Regulators Affecting Acarbose Biosynthesis inMicroorganisms · 2024Article
- Sigma Factor Engineering inMicroorganisms · 2024Article
- Role of MalQ Enzyme in a Reconstructed Maltose/Maltodextrin Pathway inMicroorganisms · 2024Article
- Discovery of thiazostatin D/E using UPLC-HR-MS2-based metabolomics and σ-factor engineering ofFrontiers in bioengineering and biotechnology · 2024Article
- The 4-α-Glucanotransferase AcbQ Is Involved in Acarbose Modification inMicroorganisms · 2023Article
- Enhancement of acarbose production by genetic engineering and fed-batch fermentation strategy in Actinoplanes sp. SIPI12-34.Microbial cell factories · 2022Article
- A maltose-regulated large genomic region is activated by the transcriptional regulator MalT in Actinoplanes sp. SE50/110.Applied microbiology and biotechnology · 2020Article
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7 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundActinoplanes sp. SE50/110 is the natural producer of the diabetes mellitus drug acarbose, which is highly produced during the growth phase and ceases during the stationary phase. In previous works, the growth-dependency of acarbose formation was assumed to be caused by a decreasing transcription of the acarbose biosynthesis genes during transition and stationary growth phase.
resultsIn this study, transcriptomic data using RNA-seq and state-of-the-art proteomic data from seven time points of controlled bioreactor cultivations were used to analyze expression dynamics during growth of Actinoplanes sp. SE50/110. A hierarchical cluster analysis revealed co-regulated genes, which display similar transcription dynamics over the cultivation time. Aside from an expected metabolic switch from primary to secondary metabolism during transition phase, we observed a continuously decreasing transcript abundance of all acarbose biosynthetic genes from the early growth phase until stationary phase, with the strongest decrease for the monocistronically transcribed genes acbA, acbB, acbD and acbE. Our data confirm a similar trend for acb gene transcription and acarbose formation rate. Surprisingly, the proteome dynamics does not follow the respective transcription for all acb genes. This suggests different protein stabilities or post-transcriptional regulation of the Acb proteins, which in turn could indicate bottlenecks in the acarbose biosynthesis. Furthermore, several genes are co-expressed with the acb gene cluster over the course of the cultivation, including eleven transcriptional regulators (e.g. ACSP50_0424), two sigma factors (ACSP50_0644, ACSP50_6006) and further genes, which have not previously been in focus of acarbose research in Actinoplanes sp. SE50/110.
conclusionIn conclusion, we have demonstrated, that a genome wide transcriptome and proteome analysis in a high temporal resolution is well suited to study the acarbose biosynthesis and the transcriptional and post-transcriptional regulation thereof.
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