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From 2013.igem.org

Construction of a living detection system or biosensor of allergens using Luciferase

Abstract

A common problem in todays society is allergies. To be able to quickly detect the precence of an antigen we are developing a biosensor. The sensor is created by letting genetically modified E.Coli produce a complex consisting of an antibody and a fluorescent protein. When this complex comes in contact with a certain antigen attached to another fluorescent protein, it will emit light. This light will be discovered by a detector and translated into an electrical signal. Using this method, very small amounts of an antigen can be measured and ampified.