Team:British Columbia

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The Bacterial Traffic Light:
A flexible, modular, and transparent system for multi-level assessment of variable inputs.'

The goal of our project is to construct an Eschericia coli bacterial "traffic light", that responds to increasing concentration levels of a given input (in our case, arabinose) with green, yellow, and red fluorescent outputs. Our project is unique because it is an analog biosensor, capable of responding to a continuous variable signal, rather than a binary biosensor that only signals on/off.


Click the colours of the traffic light to learn about its different subparts! Sensors: This links to the pBAD promoters that sense the arabinose. Lock and Key: this controls when the colors are produced The Jammer: this mRNA sequence blocks the key from opening the lock.


The Traffic Light is composed of three distinct subparts:

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