What is Activator in Biology? PDF Book

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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