A 100 μL drop of MSgg was mounted on top of the biofilm and NO microprofiles FK228 datasheet were measured immediately with an NO microsensor as described previously [43]. For each experimental treatment, MSgg was supplied either with or without 300 μM of the NO donor SNAP. SNAP was mixed

to MSgg directly before the experiment. Experimental treatments were as followed: (i) wild-type: B. subtilis 3610 for which MSgg agar and drop were added without further supplementation; (ii) wild-type: B. subtilis 3610 for which MSgg agar and drop were supplemented with 100 μM L-NAME; and (iii) B. subtilis 3610 Δnos for which MSgg agar and drop were added without further supplementation. Acknowledgements We thank Bernhard Fuchs (MPI Bremen) for help with flow cytometry and Pelin Yilmaz (MPI Bremen) for help during initial SN-38 research buy stages of swarming experiments. This study was supported by the Max Planck Society. Electronic supplementary material Additional file 1: Figure S1. Theoretical formation of NO from the NO donor Noc-18. The figure shows the calculated formation of NO over time for different starting concentrations of Noc-18. Figure S2. Theoretical formation of NO from the NO donor SNAP. The figure shows the calculated formation of NO over time for different starting concentrations of SNAP. (PDF 160 KB) References 1. Bredt DS, Snyder SH: Nitric-Oxide – a Physiological Messenger Molecule. Annu Rev Biochem 1994, 63:175–195.PubMedCrossRef

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