In bacteria, the lack of compartmentalization within membrane-enclosed compartments has made it difficult to determine how mature messenger RNAs are spatially distributed. Here the authors use fluorescence experiments in bacteria to follow mRNA dispersal after transcription. They find, surprisingly, that the newly transcribed mRNAs show limited diffusion, and speculate that the packed chromosomal material may itself act as a partition to separate translation from mRNA degradation.
- Paula Montero Llopis
- Audrey F. Jackson
- Christine Jacobs-Wagner