coactivator

noun
co·​ac·​ti·​va·​tor | \ (ˈ)kō-ˈak-tə-ˌvā-tər How to pronounce coactivator (audio) \

Medical Definition of coactivator

: 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, 2002

Comments on coactivator

What made you want to look up coactivator? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a wrong name or inappropriate designation

Get Word of the Day daily email!

Test Your Vocabulary

Summer 2019 Words of the Day Quiz

  • a-bowl-of-peach-sorbet-with-cut-peaches-next-to-it
  • Which is a synonym of desideratum?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!