transcriptional activation

Transcriptional activation is the process by which certain proteins, called transcription factors, bind to specific regions of DNA to start the production of RNA from a gene. This RNA then serves as a template for making proteins, which carry out various functions in cells. Essentially, transcriptional activation acts as a switch that turns on genes, allowing cells to respond to signals and adapt to their environment. It is a crucial step in regulating how genes are expressed, influencing everything from growth and development to how cells react to stress.