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Regulatory gene


noun, plural: regulatory genes

A gene that is involved in the production of a substance that controls or regulates the expression of one or more genes, such as the gene that codes for a repressor protein that inhibits the activity of an operator gene.


In the Operon Model, the regulatory genes are those that code for the production of regulatory proteins. For instance, the regulatory gene in lac operon is the lac I gene that codes for the lac repressor.

The repressor protein binds to operator gene, which consequently prevents the production of a specific enzyme. When that enzyme is needed again, a specific regulatory metabolite inhibits the repressor so that the enzyme is produced.

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Recessive and dominant genetics - Pitx1 case study

Hey, so in my readings on recessive and dominant genetics, I have come across a question that is pretty basic but still stumping ... differ from the ones pictured above if the scientists were able to modify the regulatory regions of the mouse Pitx1 gene to be similar to those of a freshwater ...

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by scienceguy914
Mon Sep 08, 2014 1:44 am
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Topic: Recessive and dominant genetics - Pitx1 case study
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... function it means all DNA which does not produce protein or has a regulatory function. For example introns, they are segments of DNA from a gene which are transcribed to RNA, then cut out and disappear (They do not code for protein). ...

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by wiliamjack703
Thu Aug 22, 2013 6:36 am
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Topic: Junk DNA
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Re: Muscular dystrophy inheritance question

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by jonmoulton
Thu Jan 10, 2013 3:59 pm
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Re: Gene targeting

Yes. Delivery efficiency to cells in adult tissue will not be 100%. There are likely to be regulatory barriers (legal restrictions). But, in principle it is possible.

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Wed Dec 26, 2012 4:51 pm
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mRNA transcripts, cis/trans-acting questions

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Fri Nov 09, 2012 11:58 am
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Topic: mRNA transcripts, cis/trans-acting questions
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