Assays

What is an Assay?
10 Assays visible to you, out of a total of 10

Mutants with a linear respiratory chain consisting of NADH Dehydrogenase II and one of the terminal oxidases cytochrom bo, cytochrome bd I or cytochrome bd II were growth in chemostats with defined oxygen supply. The amounts of biomass formed and of acetate and formate produced were determined.

Mutant strains with linear electron transport chain were grown in chemostat cultures at different defined aerobiosis levels. Expression of selected genes was determined by Real Time RT-PCR

Mutant strains which lack one or more of the glucose transport systems were analyzed in aerobic chemostat cultures and compared to batch cultures.

ArcA phosphorylation in chemostat cultures grown at different aerobiosis levels was quantitated by Phos-tag SDS-PAGE gel analysis and subsequent immunodetection of ArcA.

The task of this assay is to determine the impact of oxygen availability on the concentrations of metabolites from different central metabolic pathways. The focus lies on metabolites connected to glycolysis, tri-carbon-acid-cycle and energy metabolism. All strains have been cultured and analysed according to the SOPs listed below

These files show physiological measurements from the Sheffield Infors chemostat which were made during acetate calibration and also when sampling for the steady-state transcriptional profiles.

This assay involved the determination of transcriptional profiles at 0, 2, 5, 10, 15 and 20 minutes through aerobic to anaerobic gas transitions and anaerobic to aerobic gas transitions. In each case an aerobic or anaerobic steady state was created, RNA sampled (0 min) and then the gas supply changed. RNA samples were then taken from the time at which the gas supply was changed.

For anaerobic conditions 5% CO2, 95% N2 was used.

The full transcriptional dataset is available from ArrayExpress ...

This assay describes the determination of concentrations and ratio of metabolites of ubiquinones (oxidised and reduced form). These metabolites have been extracted from Escherichia coli MG1655 and isgenic mutant strains.

This assay describes how to analyze gene expression rates via RT-PCR.

This document describes by-product formation rates measured in MG1655 at steady-state conditions in Infors-Multifors-Bioreactors.

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