Part:BBa_K649001:Experience
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Applications of BBa_K649001
Fluorescence intensity of BBa_K649001 was increased by 3O-C12-HSL induction.
Generally, in the presence of 3O-C12-HSL lasI promoter is activated and the transcription level of downstream gene increases. To characterize this part, we used Ptrc-lasR on pBR as regulator part.
Method ①Overnight cultures of sample strain grown at 37 °C in LB medium containing carbenicillin and kanamycin were diluted 1:100 in the medium, and then they were incubated at 37 °C as fresh cultures. ②After their OD600 reached 0.2, we added 3 µL of 500 µM 3O-C12-HSL (3O-C12-HSL+) or 3µL of DMSO (3O-C12-HSL-) into the fresh cultures. ③After 3-hour incubation at 37 °C, 0.25 mL of each culture was harvested by centrifugalization and suspended by adding 1 mL of PBS (phosphate-buffered saline). ④We dispensed 500 µL of each suspension into a disposable tube through a cell strainer, and its fluorescence intensity was measured with a flow cytometer of Becton, Dickinson and Company.
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UNIQ753205fbaf6d8004-partinfo-00000000-QINU UNIQ753205fbaf6d8004-partinfo-00000001-QINU