Composite

Part:BBa_K776020:Experience

Designed by: Jhonatan Alejandro Hernandez-Valdes   Group: iGEM12_CINVESTAV-IPN-UNAM_MX   (2012-09-25)

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Applications of BBa_K776020

iGEM CINVESTAV_IPN-UNAM

The genetic regulation system AppA/PpsR light dependent was used in purple non-sulfur photosynthetic bacteria (PNSP) R. sphaeroides and R. palustris, using different conditions. For test the system we used as a reporter GFP.

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Fig 1. Construction of the genetic regulation system AppA/PpsR light dependent.


We employed flow cytometery for mesuring the expression of GFP. The conditions we used for test genetic regulation system AppA/PpsR light dependent were: aerobic/darness, anaerobic/light, anaerobic/darknness. The results were as follows.



R. sphaeroides

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Graphic 1.: Quantitative analysis of bacterial population with GFP expression (GFP+), under above condition, using flow cytometry (Attune cytometer Applied Biosystems), background signals were eliminated using a negative control.


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Graphic 2. Median fluorescence Intensity of the conjugated R. sphaeroides strain. Analysis of fluorescence in bacterial populations (1000 bacteria), under above conditions, using flow cytometry (Attune cytometer Applied Biosystems), background signals were eliminated using a negative control.



R. palustris

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Graphic 3.: Quantitative analysis of bacterial population with GFP expression (GFP+), under above condition, using flow cytometry (Attune cytometer Applied Biosystems), background signals were eliminated using a negative control.


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Graphic 4. Median fluorescence Intensity of the conjugated R. palustris strain. Analysis of fluorescence in bacterial populations (1000 bacteria), under above conditions, using flow cytometry (Attune cytometer Applied Biosystems), background signals were eliminated using a negative control.


Results above shows that our system is functional in our two PNSP bacteria.

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