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Activator Definition and Explanation PDF | Download eBooks

Learn Activator definition in biology with explanation to study “What is Activator”. Study activator explanation with biology terms to review biology course for online degree programs.

Activator Definition:

  • Activator is a protein that binds to DNA and stimulates transcription of a gene.

    Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson



Activator Explanation:

Activator is a DNA-binding protein that regulates one or more genes by increasing the rate of transcription. Most activators are DNA-binding proteins that bind to enhancers or other elements on promoters to enhance the transcription of any protein that is needed urgently or in a large amount. The DNA site bound by the activator is referred to as an "activator site" and the part of the activator that makes protein-protein interactions with the general transcription machinery is referred to as the activating region.

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