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Mining Spatial Transcriptomics Datasets using DeepSpaceDB
Published on: September 5, 2025
985
Spatial organization shapes the turnover of a bacterial transcriptome
Jeffrey R Moffitt1,2, Shristi Pandey3, Alistair N Boettiger1,2
1Howard Hughes Medical Institute, Harvard University, Cambridge, United States.
Elife
|May 21, 2016
Summary
Prokaryotes spatially organize their transcriptome. Messenger RNAs (mRNAs) for inner-membrane proteins concentrate at the cell membrane, influencing their degradation rates and RNA regulation.
Area of Science:
- Microbiology
- Molecular Biology
- Cell Biology
Background:
- Eukaryotic RNA spatial organization regulates gene expression post-transcriptionally.
- The role of RNA spatial organization in prokaryotic post-transcriptional regulation is largely unknown.
Purpose of the Study:
- To investigate the spatial organization of the bacterial transcriptome in E. coli.
- To determine if RNA spatial organization influences mRNA fate in prokaryotes.
Main Methods:
- Super-resolution microscopy to visualize the E. coli transcriptome.
- Time-resolved RNA-sequencing to analyze mRNA degradation dynamics.
Main Results:
- Observed genome-wide spatial organization of RNA in E. coli.
- mRNAs for inner-membrane proteins are enriched at the cell membrane.
- This membrane enrichment is linked to co-translational insertion and signal recognition particle interaction.
- Inner-membrane-protein mRNAs exhibit higher degradation rates, which are abolished when the RNA degradosome is detached from the membrane.
Conclusions:
- The bacterial transcriptome is spatially organized.
- This spatial organization shapes the post-transcriptional dynamics of mRNAs in prokaryotes.
- RNA spatial organization is a regulatory mechanism in bacteria.
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