Bacterial strains and growth conditions Standard bacterial cultures were grown in lysogeny broth (LB Lennox) at 37 °C and 250 rpm except where stated otherwise. When necessary, 34 µg ml−1 chloramphenicol (+Ch), +50 µg ml−1 kanamycin sulfate (+K) or +50 µg ml−1 carbenicillin (+C) was supplemented to media and LB agar plates. For cellular assays, all bacterial strains were stored at −80 °C in 25% glycerol (Sigma) when not …
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