Protein Specificity and Signaling Pathways Quiz
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Questions and Answers

Which protein is responsible for bringing SOS along when associated with phosphorylated tyrosines?

  • Grb2 (correct)
  • Raf
  • MEK
  • Ras

What is the role of Raf in the signaling pathway?

  • It phosphorylates downstream targets
  • It activates Erk
  • It regulates transcription
  • It changes Raf's conformation (correct)

Which molecule is responsible for phosphorylating Erk at specific sites of serine or threonine?

  • MEK (correct)
  • Fos
  • Myc
  • Elk1

Which downstream target is involved in the regulation of the cell cycle?

<p>Cyclin D (A)</p> Signup and view all the answers

Which molecule is responsible for dephosphorylating Erk at sites where MEK phosphorylated it?

<p>DUSP (C)</p> Signup and view all the answers

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