co·​ac·​ti·​va·​tor (ˈ)kō-ˈak-tə-ˌvā-tər How to pronounce coactivator (audio)
: a protein or protein complex that activates genetic transcription usually by binding to a transcription factor
Gene-regulatory proteins that do not themselves bind DNA but assemble on DNA-bound gene regulatory proteins are often termed coactivators or corepressors, depending on their effect on transcription initiation.Bruce Alberts et al., Molecular Biology of the Cell

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Cite this Entry

“Coactivator.” Medical Dictionary, Merriam-Webster, Accessed 9 Dec. 2023.

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