ArticleBMC genomics2022
The transcriptomic landscape of Magnetospirillum gryphiswaldense during magnetosome biomineralization.
Article in BMC genomics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 11 citations in OpenAlex.
- A cumate-inducible promoter system for tuned gene expression and magnetosome overproduction in magnetotactic bacteria.Applied microbiology and biotechnology · 2026Article
- Controlled Low-Oxygen Supply Enables Magnetosome Size Tuning by Uncoupling Magnetite Nucleation and Crystal Growth in Magnetospirillum gryphiswaldense.Microbial biotechnology · 2026Article
- Cross-linking proteomics analysis for reliable identification of MamXY-associated magnetosome formation.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2026Article
- In-depth transcriptomic and ChIP-seq analyses on IrrB regulation of iron homeostasis during initial life phase of Magnetospirillum gryphiswaldense.World journal of microbiology & biotechnology · 2026Article
- No evidence for the putative nitric oxide sensor NsrR as a key regulator of magnetosome formation in Magnetospirillum gryphiswaldense.Nucleic acids research · 2026Article
- A Two-Protein Chemoreceptor Complex Regulates Oxygen Thresholds in Bacterial Magneto-Aerotaxis.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Design Principles Of Inorganic-Protein Hybrid Materials for Biomedicine.Exploration (Beijing, China) · 2025Review
- Therapeutic Innovations in Nanomedicine: Exploring the Potential of Magnetotactic Bacteria and Bacterial Magnetosomes.International journal of nanomedicine · 2025Review
- Amended Ferrozine Assay for Quantifying Magnetosome Iron Content in Magnetotactic Bacteria.ACS omega · 2024Article
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundOne of the most complex prokaryotic organelles are magnetosomes, which are formed by magnetotactic bacteria as sensors for navigation in the Earth's magnetic field. In the alphaproteobacterium Magnetospirillum gryphiswaldense magnetosomes consist of chains of magnetite crystals (Fe
resultsHere, we compared transcriptional profiles of anaerobically grown magnetosome forming cells with those in which magnetosome biosynthesis has been suppressed by aerobic condition. Using whole transcriptome shotgun sequencing, we found that transcription of about 300 of the > 4300 genes was significantly enhanced during magnetosome formation. About 40 of the top upregulated genes are directly or indirectly linked to aerobic and anaerobic respiration (denitrification) or unknown functions. The mam and mms gene clusters, specifically controlling magnetosome biosynthesis, were highly transcribed, but constitutively expressed irrespective of the growth condition. By Cappable-sequencing, we show that the transcriptional complexity of both the MAI and the entire genome decreased under anaerobic conditions optimal for magnetosome formation. In addition, predominant promoter structures were highly similar to sigma factor σ
conclusionsOur transcriptome-wide analysis revealed that magnetite biomineralization relies on a complex interplay between generic metabolic processes such as aerobic and anaerobic respiration, cellular redox control, and the biosynthesis of specific magnetosome structures. In addition, we provide insights into global regulatory features that have remained uncharacterized in the widely studied model organism M. gryphiswaldense, including a comprehensive dataset of newly annotated transcription start sites and genome-wide operon detection as a community resource (GEO Series accession number GSE197098).
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