Regulatory Sequences Flashcards

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1
Q

Definition of Regulatory Sequences

A

A sequence of DNA that binds a regulatory protein and thereby regulate gene expression

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2
Q

What are the components of regulatory sequences?

A
  1. Promoter
  2. Enhancers
  3. Silencers
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3
Q

What is the location and function of promoter?

A
  • upstream of gene

- attracts and binds to TFs and RNA polymerase, forming TIC

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4
Q

What is the location and function of enhancers?

A
  • far away from promoter

- binds to activator (a regulatory TG), increases level of transcription by helping to form TIC

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5
Q

What is the function of silencer?

A

-binding of repressor decreases transcription rate

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