TFIIIA

TFIIIA is a type of protein called a transcription factor that plays a crucial role in gene expression. It helps turn on the production of a specific RNA molecule called 5S rRNA, which is essential for making parts of the cell's protein factories. TFIIIA binds to the DNA at the 5S rRNA gene, guiding other molecules to initiate the process of RNA making. This precise regulation ensures cells produce the right amount of 5S rRNA, supporting proper cell function and protein synthesis.