Part:BBa_K4656008:Experience

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Applications of BBa_K4656008

1. Verify the feasibility of the receptor module pathway, that is, verify whether engineered bacteria can sense the rise in butyrate concentration. Using components BBa_K4656001, BBa_K4656004 and BBa_K4656005, we designed a gene route PpchA-pchA-PLEE1-EGFP, and cloned it into the target vector pET28a, then transformed the engineered bacteria. The route formed by these components can be used to verify the feasibility of the sensing module. In the experiment, sodium butyrate of 0mM, 10mM and 20mM was added respectively, and the fluorescence intensity (OD480/OD600) was measured at 0, 4, 8, 12, 16, 20, 24 and 28h, respectively. We found that 20mM sodium butyrate had the most obvious promoting effect on fluorescence expression, followed by 10mM sodium butyrate, and the addition of 0mM sodium butyrate had almost no increasing effect on EGFP expression even if the observation time was long. Thus, the feasibility of our receptor module pathway was verified, that is, the increase of butyrate concentration could indeed induce the increase of label protein expression of engineering bacteria, that is, our engineering bacteria could indeed feel the increase of butyrate concentration more sensitively.

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