Mediator (coactivator)
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Mediator is a multiprotein complex that functions as a transcriptional coactivator. It was discovered by Roger D. Kornberg, winner of the 2006 Nobel Prize in Chemistry. It is also referred to in scientific literature as the Vitamin D Receptor Interacting Protein (DRIP) coactivator complex and the Thyroid Hormone Receptor-associated Proteins (TRAP).