Data files

This document shows the ArcA phosphorylation levels at different aerobiosis units, measured using Phos-tag gels, western immunoblotting. Exposed films were quantitated using ImageJ and the results shown here.

Transcriptional profiles of steady-state chemostat cultures were measured at a range of oxygen levels using microarrays. Oxygen levels were defined by the aerobiosis scale of Alexeeva et al. (2002).

This .csv file contains the filtered datset of the aerobic to anaerobic transition. Values are shown if they show a statistically significant change relative to the 0 minute transcriptional profile (t-test p<0.05 and 2-fold cut-off).

This .csv file contains the filtered datset of the anaerobic to aerobic transition. Values are shown if they show a statistically significant change relative to the 0 minute transcriptional profile (t-test p<0.05 and 2-fold cut-off).

This is a pdf showing a graph of the dissolved oxygen tension of the culture during an aerobic to anaerobic transition.

This is a pdf showing a graph of the dissolved oxygen tension of the culture during an anaerobic to aerobic transition.

This .csv file contains the entire transcriptional dataset of the aerobic to anaerobic transition. The values shown are the gene-expression ratio at 2, 5, 10, 15 and 20 minutes relative to the 0 minute timepoint.

This .csv file contains the entire transcriptional dataset of the anaerobic to aerobic transition. The values shown are the gene-expression ratio at 2, 5, 10, 15 and 20 minutes relative to the 0 minute timepoint.

This .pdf file shows a graphical representation of the physiological measurements from the Sheffield Infors chemostat which were made during acetate calibration and also when sampling for the steady-state transcriptional profiles.

This .csv file contains growth parameters measured from chemostat runs of the Sheffield Infors chemostats. The runs were carried out for acetate calibration purposes and for sampling for the steady-state transcriptional profiles.

Columns: Date O2_input (% total) Aerobiosis level (%AAU) OD600 Redox (mV) pO2 (μM) DCW (g/L) Viable cell counts (CFU/ml) RespRate (mmol/h/gDCW) RespRate STDEV [Acetate] (mM) Qacet (mmoles/h/gDCW)

A .pdf files showing graphs of FNR activity at varying aerobiosis levels

Top graph shows no acetate re-calibration Bottom graph shows data with acetate re-calibration

This .csv file shows FNR activity at different aerobiosis levels

Columns a_old Desired aerobiosis level (Aerobiosis units or %AAU) Bgal_activity Average FNR reporter activity (Miller units) Bgal_STDEV STDEV of FNR reporter activities (Miller units) rDOT(μM) Dissolved oxygen tension (μM) DCW DCW (g/L) [acetate] Extracellular acetate concentration (mM) Qacetate Acetate flux (mmoles/h/gDCW) a_new Actual aerobiosis level in sampled chemostat