transcription factor tegan6. February 2019(TF). A protein controlling how much of a certain mRNA is made from a DNA sequence. TFs can activate (increase the expression) or repress (decrease the expression) transcription. More on Plants and Pipettes:mRNA- going the (long) distanceGive peas a chanceP-bodies prepare plants for growth in the light‘You’ve got babies on your leaves’ Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment.