Flashcards in Regulation of transcription and translation Deck (6):
What is the movement (idk) of transcription factors?
Transcription factors move from the cytoplasm to the nucleus.
In the nucleus they bind to specific DNA sites called promoters, which are found near the start of their target genes.
What is the role of transcription factors?
Activators- increase the rate of transcription.
Repressors- decrease the rate of transcription.
How do activators work?
They help RNA polymerase bind to the start of the target gene and activate transcription.
How do repressors work?
They bind to the start of the target gene, preventing RNA polymerase from binding, stoping transcription.
How does oestrogen affect transcription?
It binds to a transcription factor called an oestrogen receptor forming an oestrogen-oestrogen receptor complex.
The complex moves from the cytoplasm into the nucleus where it binds to specific DNA sites near the start of the target gene acting as an activator OR a repressor.