Schematic of Caulobacter ribosome profiling procedure.
Section 2.1 - Cell Growth, Synchronization and Harvesting: Grow 1 Liter of
NA1000 cells, synchronize, and then grow to one of the cell cycle time points.
Section 2.2 - Harvesting Cells: To each cell population, harvest by
chloramphenicol pre-treatment (2 min at 28 °C) followed by rapid cell
collection on ice. Section 2.3 - Cell Lysis: Lysis is performed under liquid
nitrogen and a small portion is saved as a frozen aliquot for total RNA-seq.
Section 2.4 - Footprinting and Footprint Extraction: Footprint mRNA fragments,
select for size, and recover digested mRNA fragments. Section 2.5 - Total
RNA-Seq Sample Preparation and PAGE Size Selection: Use the lysate aliquot from
section 2.3 and prepare for total RNA-seq. Section 2.6 - Library Generation:
Sequencing libraries are generated in the same way from the products of both
ribosome footprinting and total RNA-Seq.