ArticleMolecular microbiology2021
Formation of wall-less cells in Kitasatospora viridifaciens requires cytoskeletal protein FilP in oxygen-limiting conditions.
Article in Molecular microbiology, 2021. 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, 7 citations in OpenAlex.
- Peptidoglycan-reshuffling proteins SCO0954, SCO1758, SCO4439, and SCO4440 modulate the formation of wall-deficient cells in Streptomyces coelicolor under hyperosmotic sucrose stress.Scientific reports · 2025Article
- The stomatin-like protein StlP organizes membrane microdomains to govern polar growth in filamentous actinobacteria under hyperosmotic stress.Nature communications · 2025Article
- A Flexible and Efficient Microfluidics Platform for the Characterization and Isolation of Novel Bacteriophages.Applied and environmental microbiology · 2023Article
- Cell wall deficiency as an escape mechanism from phage infection.Open biology · 2021Review
- Formation of wall-less cells in Kitasatospora viridifaciens requires cytoskeletal protein FilP in oxygen-limiting conditions.Molecular microbiology · 2021Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The cell wall is considered an essential component for bacterial survival, providing structural support, and protection from environmental insults. Under normal growth conditions, filamentous actinobacteria insert new cell wall material at the hyphal tips regulated by the coordinated activity of cytoskeletal proteins and cell wall biosynthetic enzymes. Despite the importance of the cell wall, some filamentous actinobacteria can produce wall-deficient S-cells upon prolonged exposure to hyperosmotic stress. Here, we performed cryo-electron tomography and live cell imaging to further characterize S-cell extrusion in Kitasatospora viridifaciens. We show that exposure to hyperosmotic stress leads to DNA compaction, membrane and S-cell extrusion, and thinning of the cell wall at hyphal tips. Additionally, we find that the extrusion of S-cells is abolished in a cytoskeletal mutant strain that lacks the intermediate filament-like protein FilP. Furthermore, micro-aerobic culturing promotes the formation of S-cells in the wild type, but the limited oxygen still impedes S-cell formation in the ΔfilP mutant. These results demonstrate that S-cell formation is stimulated by oxygen-limiting conditions and dependent on functional cytoskeleton remodeling.
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