Prokaryotic Gene Regulation Flashcards
1
Q
What is the role of specificity factors
A
sigma factors that affect the specificity of RNA polymerase for a promoter or set of promoters
2
Q
What is the role of repressors? How do they differ in pro and eukaryotes?
A
Bind and inhibit initiation of transcription at the promoter
prokaryotes - bind to operater, block promoter or prevent elongation
specific repressors are rare in eukaryotes
3
Q
Role of Activators
A
Bind and enhance initiation of transcription of RNA pol at promoter
