activator

Noun
  1. (biology) any agency bringing about activation;
    A molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription (synset 114747240)
    referred to in: biological science, biology - the science that studies living organisms
    is a type of: substance - the real physical matter of which a person or thing consists
    subtypes:
    • activating agent - (mineral extraction) a surface-active chemical used in flotation process to increase the attraction to a specific mineral
    • accelerator, catalyst - (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
    • sensitiser, sensitizer - (chemistry) a substance other than a catalyst that facilitates the start of a catalytic reaction

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