coactivator
Pronunciation: kō-ak′ti-vā-tŏr
Definition: A type of nuclear proteins that participate in the potentiation of transcription of genes that are responsive to ligand-dependent transcription factors. They belong to several families, including the p160 coactivators and the CBP/p300 molecules.
[co- + activator]
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Examples: glitazone, GI cocktail, etc.
