Medical Dictionary
promoter
noun pro·mot·er \-ˈmōt-ər\
Medical Definition of PROMOTER
1
: a substance that in very small amounts is able to increase the activity of a catalyst
2
: a binding site in a DNA chain at which RNA polymerase binds to initiate transcription of messenger RNA by one or more nearby structural genes
3
: a chemical believed to promote carcinogenicity or mutagenicity
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