Part:BBa_K4174002:Experience

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Applications of BBa_K4174002

William and Mary iGEM 2022

To test the effectiveness of our sfGFP construct (BBa_K4174002), our team transformed the original MIT iGEM 2006 construct, our improved sfGFP construct, and our improved RFP construct (BBa_K4174001) in E. coli NEB5α in a plate reader. The various transformants were grown at 37°C using continuous shaking. For green fluorescence, we used an excitation value of 485 and an emission value of 528. For red fluorescence, we used an excitation value of 584 and an emission value of 610. The values for green fluorescence are reported below. For information about red fluorescence, see parts page BBa_K4174001.

As seen in the graph above, both the sfGFP and MIT GFP constructs enter stationary phase right before 14 hours, but our improved sfGFP circuit is much more fluorescent. The other constructs are our RFP construct and untransformed E. coli cells, both of which serve as negative controls for green fluorescence.

As seen in the image above, qualitative results reveal that our improved constructs are more fluorescent than the original construct. Here, sfGFP is on the far right, and is visibly more brightly green that the original GFP construct.

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