Part:BBa_K515107:Experience

User Reviews

SCAU-China

The main goal of this characterisation was to find out which pH value condition was the most effective among 6 level pH value to obtain a suitable culture condition for the expression of Dendar2.We also found that the part which expressed the Dendar2 can work well in E.coli strain DH10B, and just like in the DH5 alpha mentioned in main page. Experiment We wanted to test 6 pH value gradients that easily used in lab : 4.5/5.8/6.2/7.2/8,2/9,1, to see, in a 360 min culturing time, which one would be the best pH value culture condition for the DH10B to growth and express the Dendar2. We used the bacterial stock of our own, coming from commercial bacteria cultured and made competent using our protocol a few weeks before the experiment and conserved at -80°C. We made an electric shock transformation of 30ng BBa_K515107 part into 50μL bacteria and culture in LB plate, then picked the colony to 250μL LB broth medium for one hour. We prepared different pH level LB medium in 6 gradients(4.5/5.8/6.2/7.2/8,2/9,1), and add 25μL cultured medium from the 250μL LB broth medium to 1 mL different pH level LB medium, still culture to 360 min. Very 20 min time point, we collect 10μL bacterial culture medium and measure the green fluorescence as well as the red fluorescence after photoconversion using photon stimulation at UV wavelength. ImageJ was used to analysize the intensity of Dendar2 fluorescence.|

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