McGill

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The official wiki of the McGill University iGEM 2007 team of Montreal, Quebec, Canada

McGillIgem2007team.jpg

Contents

Project Overview

Quorum-sensing coupled with the Repressilator

Our project is a continuation of one of the projects we presented last year: a two-gene oscillator, with an 'On' switch - LuxI gene, and an 'Off' switch - LacI, expressing a Cyan fluorescent protein when turned on for visualization. This simple relaxation oscillator makes a robust system of oscillations that can act as a 'pace maker' for more complicated oscillating systems. Quorum-sensing coupling between the systems is achieved with a diffusible artificial inducer (AI) protein made from LuxI which couples when produced, to a constitutively expressed gene in the system LuxR which can turn 'on' the system by promoting the synthesis of Lac from pLux. As Lac accumulates, it acts to turn 'off' the system by repressing the pLac controlling the synthesis of LuxI itself. Also, once AI is produced, it can easily diffuse to other cells and continue this 'On'-'Off' oscillator in other neighbouring cells, and hence increasing synchronization across a population of oscillating cells.

This year we've taken this system even further... learn more

Project Description
Animated System
Background Papers

Repress graph.jpg


Please feel free to check out our work from last year at iGEM McGill 2006

Bacteria1.jpg In the Lab

Lab Notebook
Lab Protocols
Parts/Biobricks

Greenbulb.jpg The Team

Team Members
Mailing List

Sine.jpg Pictures

[http://www.flickr.com/photos/cumbers/archives/date-posted/2007/08/21/ Brown University Meetup] (External)
Rhode Island Meetup
McGill Research Conference