Difference between revisions of "Part:BBa K4645019"

Revision as of 04:51, 12 October 2023

J23100-B0030-luxR-B0017-lux pR-tetR-B0015-PTet-amcyan-B0017

Verification of Not-Gate.

Usage and Biology

J23100-B0030-luxR-B0017-Plux-tetR-T7 terminator-Ptet-amcyan- T7 terminator We transformed this biobrick into E. coli to regulate expression of genes. With the growing of bacteria, AHL accumulates. While the concentration of AHL reached the threshold value, the expression of NeuA, NeuB and TetR would be activated. Then TetR shut down the expression of amcyan in downstream.

Characterization

Blank BL21, BL21 transformed with this biobrick, were cultured in microplate reader 37°C, 220 rpm for 10 hours and detected OD600, fluorescence intensity (458 nm excitation light, 489 nm emission light) every 10 minutes.

What？

Figure 2. Changes of fluorescence intensity / OD600 over time.

The result shows that in the early growth stage, transformed bacteria expressed amcyan fluorescent protein continually. When the group density reached the threshold value, the expression of amcyan fluorescent protein began to be blocked up.

Sequence and Features

Assembly Compatibility:

10
COMPATIBLE WITH RFC[10]
12
INCOMPATIBLE WITH RFC[12]
Illegal NheI site found at 7
Illegal NheI site found at 30
21
COMPATIBLE WITH RFC[21]
23
COMPATIBLE WITH RFC[23]
25
INCOMPATIBLE WITH RFC[25]
Illegal AgeI site found at 2541
1000
INCOMPATIBLE WITH RFC[1000]
Illegal BsaI.rc site found at 1027

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-<center><img src=" https://static.igem.wiki/teams/4645/wiki/quorum-sensing/luxr-tetr-chara.jpg" style="width:75%; "></center>
+<center><img src=" https://static.igem.wiki/teams/4645/wiki/quorum-sensing/luxr-tetr-chara.jpg" style="width:50%; "></center>
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 <center><b>Figure 2. Changes of fluorescence intensity / OD600 over time.</b></center>