Positive and negative regulation, Biology

The lac operon is an brilliant example of negative control or negative regulation of gene expression in which they bound repressor stops transcription of the structural genes. The Positive control or positive regulation of gene expression is when the regulatory protein binds to enhances and DNA the rate of transcription.  In that case the regulatory protein is called as an activator.  The CAP or CRP included in regulating the lac operon is a good instance of an activator. Thus the lac operon is subject to both positive and negative control.

 

 

Posted Date: 4/11/2013 1:46:23 AM | Location : United States







Related Discussions:- Positive and negative regulation, Assignment Help, Ask Question on Positive and negative regulation, Get Answer, Expert's Help, Positive and negative regulation Discussions

Write discussion on Positive and negative regulation
Your posts are moderated
Related Questions
What are examples of nematodes? Ascaris, hookworm and filaria, all parasites of humans, are instance of nematodes (also called as roundworms).

Q. Illustrate the maturation of honey? Honey is the oldest sweet food known to man. Although honey is a natural sweetener, it is considered a refined sugar because 96% of dr

Isoniazid  Serum aminotransferase activity increases in 10% to 20% of patients taking isoniazid, especially in the early weeks of treatment, but often returns to normal even wh

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Osmotic adjustment or Osmoregulation - Osmotic Stress If concentration of soluble matter (in the form of minerals and small organic molecules) builds up in the external medium

Q. Concerning reproduction what is the function of the testicles? The testicles are the male gonad that is the organs where the production of gametes takes place. In human bein

If water dousing, homeopathic cures, and so on work for just me but not for anyone else, it is still science.

Proteolytic enzymes They catalyze the hydrolysis of peptide bonds in other proteins. In order to prevent them doing generalized damage to all cellular proteins, they are often

General information about disinfectants A disinfectant is a chemical that kills disease-causing agents on contact. Natural disinfection agents, such as sunlight, heat, keeping

The mirrows reach or grayling zone This zone has a less steep gradient, than the trout beck. The river here still flows swiftly, though the current is not fast and conditions