Definition
noun, plural: promoter genes
(genetics) A site in a DNA molecule at which RNA polymerase and transcription factors bind to initiate transcription of specific genes to mRNA.
Supplement
In the Operon Model, the promoter is the gene segment that serves as the initiation site where RNA polymerase binds to and initiates the transcription of certain genes. Conversely, in the presence of a repressor protein, this segment binds with the repressor. Because of this, the RNA polymerase cannot bind to it, resulting in the prevention of transcription of genes. And, this segment is now referred to as the operator gene.
Word origin: promote » Middle English promoten, from Old French promoter, from Latin prōmovēre, prōmōt– : prō-, forward + –er.
Related terms:
Dictionary > Promoter gene
You will also like...
Photosynthesis – Photolysis and Carbon Fixation
Photosynthesis is the process that plants undertake to create organic materials from carbon dioxide and water, with the ..
Chromosomes X and Y and Sex Determination
This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..
Neurology of Illusions
Illusions are the perceptions and sensory data obtained from situations in which human error prevents us from seeing the..
Non-Mendelian Inheritance
In this tutorial, find out more about certain types of inheritance that does not follow the Mendelian inheritance patter..
Physiological Homeostasis
Homeostasis is essential to maintain conditions within the tolerable limits. Otherwise, the body will fail to function p..
Homeostatic Mechanisms and Cellular Communication
Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..