Gene marker

A gene marker or gene rapporteur is a gene which one adds with a genetic construction in order to better detect the events of genetic transformation.

The genes markers can be genes of selection (gene of resistance to a Antibiotique (ex Kanamycine)) or a gene changing a character, locatable with the naked eye such as for example the use of:

the Bioluminescence with:

green fluorescent Protein (" Fluorescent Green Protein" in English or GFP),
Luciférase, emitting a yellow light

Gene GUS, coding an enzyme (beta-glucoronidase) which colors in blue the cells where it is active, but it is lethal
of a gene modifying the color of the eyes in the drosophila, the Gène white,

The genes markers must obey in 3 conditions:

to be foreign with the genome of the organization modified so that their product does not intervene in the metabolism
their product must allow a fast visualization and specifies in order to determine in which fabric gene modified
their product acts must be quantifiable in order to measure the activity of the promoter inducing the modification.

With not confusing

genetic Marker,
biological Marker,

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