activator

Noun

Meaning

(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

Synonyms

Antonyms

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Phrases with the word

Examples

An example of this in cell biology is that activated CDK1 (Cyclin Dependent Kinase 1) activates its activator Cdc25 while at the same time inactivating its inactivator, Wee1, thus allowing for progression of a cell into mitosis. Source: Internet

Aspartate carbamoyltransferase also ensures that just the right amount of pyrimidine nucleotides is available, as activator and inhibitor molecules attach to aspartate carbamoyltransferase to speed it up and to slow it down. Source: Internet

Fructose 2,6-bisphosphate (F2,6BP) is a very potent activator of phosphofructokinase (PFK-1) that is synthesized when F6P is phosphorylated by a second phosphofructokinase ( PFK2 ). Source: Internet

Divalent europium (Eu 2+ ) in small amounts is the activator of the bright blue fluorescence of some samples of the mineral fluorite (CaF 2 ). Source: Internet

In some cases, the concentration of the activator must be restricted to below a certain level, to prevent quenching of the fluorescent emission. Source: Internet

Supersulfated cements contain about 80% ground granulated blast furnace slag, 15% gypsum or anhydrite and a little Portland clinker or lime as an activator. Source: Internet

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