Team:Goettingen/Team/Array
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''Fig.1: C-di-AMP concentrations determined via liquid chromatography-coupled tandem mass spectrometry method by our collaboration partner from the Hannover Medical School. In blue the c-di-AMP amount in low phosphate medium is shown, in red the c-di-AMP amount in high phosphate medium. We compared the wildtype and a hyperactive strain (1344) of ''Bacillus''.'' | ''Fig.1: C-di-AMP concentrations determined via liquid chromatography-coupled tandem mass spectrometry method by our collaboration partner from the Hannover Medical School. In blue the c-di-AMP amount in low phosphate medium is shown, in red the c-di-AMP amount in high phosphate medium. We compared the wildtype and a hyperactive strain (1344) of ''Bacillus''.'' | ||
- | The microarray | + | The microarray analysis in Groningen gave us a first glimpse on all the genes, which are affected by the c-di-AMP level. We were especially interested in ''ydaO''. From a poster of another workgroup we knew that ''ydaO'' is connected to an upstream c-di-AMP sensing riboswitch. This means that in the presence of c-di-AMP the riboswitch will assemble and prohibit the expression of ''ydaO''. Without c-di-AMP the riboswitch cannot be established and ''ydaO'' will be expressed. Therefore, ''ydaO'' was a perfect candidate for us to build another reporter around it. As the microarray analysis revealed, the expression of ''ydaO'' was indeed affected by c-di-AMP levels. To further analyse these results, we did some qRT-PCR analysis back in Göttingen (Fig. 2). |
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''Fig.2: qRT-PCR analyses of c-di-AMP affected ''ydaO'' and a of control gene. The analyses revealed that in comparison to the wild type ydaO is upregulated with low c-di-AMP levels.'' | ''Fig.2: qRT-PCR analyses of c-di-AMP affected ''ydaO'' and a of control gene. The analyses revealed that in comparison to the wild type ydaO is upregulated with low c-di-AMP levels.'' | ||
- | Our qRT-PCR analyses showed that ydaO is upregulated with low c-di-AMP levels. This means that the expression | + | Our qRT-PCR analyses showed that ydaO is upregulated with low c-di-AMP levels. This means that the expression of ''ydaO'' is supposedly linked to the c-di-AMP levels inside the cell. |
Revision as of 09:34, 2 October 2013