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Regulatory gene

Definition

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.


Supplement

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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Help With

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
 
Forum: General Discussion
Topic: Help With
Replies: 0
Views: 47

Re:

... 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
 
Forum: Genetics
Topic: Junk DNA
Replies: 7
Views: 3531

Re: Muscular dystrophy inheritance question

... muscular dystrophy (DMD) and is not a mutation of the dystrophin gene. Thanks, I had missed that. The upper sequences look identical, while ... the canonical start of an intron sequence (other factors such as splice regulatory proteins can also affect whether a potential splice site is recognized ...

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by jonmoulton
Thu Jan 10, 2013 3:59 pm
 
Forum: Molecular Biology
Topic: Muscular dystrophy inheritance question
Replies: 7
Views: 5493

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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by jonmoulton
Wed Dec 26, 2012 4:51 pm
 
Forum: General Discussion
Topic: Gene targeting
Replies: 17
Views: 7785

mRNA transcripts, cis/trans-acting questions

... to metabolize galactose. All of the mutants fail to transcribe the GAL2 gene, which encodes the enzyme for the first step in metabolizing galactose. ... the description to determine whether it is: a cis-acting mutation of a regulatory sequence for GAL2 itself (“cis”); a trans-acting mutation in ...

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by animus31
Fri Nov 09, 2012 11:58 am
 
Forum: Genetics
Topic: mRNA transcripts, cis/trans-acting questions
Replies: 0
Views: 2087
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