Bacterial RNA was obtained utilizing the RNAsnap method (25 (link)). Briefly, 1ml of saturated culture was centrifuged and the cell pellet was stored at −80°C. The pellet was then suspended in 500 μl RNAsnap mix (95% formamide, 18 mM ethylenediaminetetraacetic acid, 0.025% sodium dodecyl sulphate and 1% B-mercaptoethanol), lysed using ∼200 μl of 0.1mm Zirconia Silica beads [Biospec 11079101Z] using a BioSpec mini bead beater [Biospec 1001] for 2 min in a deep well 96-well plate [Axygen P-DW-20-C]. The plate was centrifuged and the clarified lysate was cleaned up using a Zymo ZR-96 RNA Clean & Concentrator kit [Zymo R1080] per manufacturer's instructions. Bacterial DNA was obtained using our standard automated DNA extraction pipeline based on a scaled down version of the Qiagen MagAttract PowerMicrobiome DNA/RNA Kit [Qiagen 27500–4-EP], detailed fully in (26 (link)).
Free full text: Click here