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- W4220785576 abstract "Bacteria are dependent on rapid alterations in gene expression. A prerequisite for rapid adaptations is efficient RNA turnover, with endonuclease RNase Y playing a crucial role in mRNA stability as well as in maturation. In Bacillus subtilis, RNase Y in turn interacts with the so-called Y-complex consisting of three proteins, which play important functions in sporulation, natural transformation and biofilm formation. It is thought that the Y-complex acts as an accessory factor in RNase Y regulation but might also have independent functions. Using single-molecule tracking, we show that all three Y-complex proteins exhibit three distinct mobilities, including movement through the cytosol and confined motion, predominantly at membrane-proximal sites but also within the cell center. A transcriptional arrest leads to a strong change in localization and dynamics of YmcA, YlbF and YaaT, supporting their involvement in global RNA degradation. However, Y-complex proteins show distinguishable protein dynamics, and the deletion of yaaT or ylbF shows a minor effect on the dynamics of YmcA. Cell fractionation reveals that YaaT displays a mixture of membrane association and presence in the cytosol, while YlbF and YmcA do not show direct membrane attachment. Taken together, our experiments reveal membrane-associated and membrane-independent activities of Y-complex proteins and a dynamic interplay between them with indirect membrane association of YmcA and YlbF via YaaT." @default.
- W4220785576 created "2022-04-03" @default.
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- W4220785576 date "2022-03-09" @default.
- W4220785576 modified "2023-10-18" @default.
- W4220785576 title "Y-Complex Proteins Show RNA-Dependent Binding Events at the Cell Membrane and Distinct Single-Molecule Dynamics" @default.
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- W4220785576 doi "https://doi.org/10.3390/cells11060933" @default.
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