transcription coactivator

A transcription coactivator is a protein that helps turn on specific genes inside cells. It doesn't directly bind to the DNA itself but works by interacting with transcription factors and the cell's machinery to boost the production of messenger RNA (mRNA). This process is essential for regulating gene activity, allowing cells to respond to signals and perform their functions properly. Think of the coactivator as a facilitator or assistant that makes it easier for the cell's genetic instructions to be read and used, ensuring gene expression occurs efficiently when needed.