Viral Protein Transport and Assembly
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Questions and Answers

What is the purpose of the mutation in the viral coat protein used in this experiment?

  • To prevent the fusion protein from incorporating into the plasma membrane
  • To allow export from the ER at high temperatures
  • To allow export from the ER at a low temperature (correct)
  • To inhibit the movement of the fusion protein to the Golgi apparatus

What is the direction of protein movement indicated by the red arrows?

  • From the Golgi apparatus to the ER
  • From the plasma membrane to the ER
  • From the ER to the cell surface (correct)
  • From the nucleus to the cytoplasm

At high temperatures, where does the fusion protein accumulate?

  • In the ER (correct)
  • At ER exit sites
  • In the Golgi apparatus
  • At the plasma membrane

What is the final destination of the fusion protein in this experiment?

<p>The plasma membrane (D)</p> Signup and view all the answers

What is the role of the GFP fusion protein in this experiment?

<p>To label the ER and track the movement of the viral coat protein (A)</p> Signup and view all the answers

Where does the fusion protein accumulate as the temperature is lowered?

<p>At ER exit sites (C)</p> Signup and view all the answers

What is the purpose of fusing a protein with GFP?

<p>To visualize and track the protein's movement throughout the cell (B)</p> Signup and view all the answers

What can be studied by fusing GFP to a protein that shuttles in and out of the nucleus?

<p>Nuclear transport events (D)</p> Signup and view all the answers

What is the result of mutations in proteins involved in the secretory pathway?

<p>Accumulation of the protein in the ER, Golgi apparatus, or transport vesicles (B)</p> Signup and view all the answers

What can be measured by fusing GFP to a plasma membrane protein?

<p>The kinetics of its movement through the secretory pathway (C)</p> Signup and view all the answers

What is shown in Figures 15–28 and 15–29?

<p>GFP-tagged proteins being tracked throughout the cell (A)</p> Signup and view all the answers

What is fused to GFP in the experiment described in Figure 15–29?

<p>A viral coat protein (D)</p> Signup and view all the answers

What is the purpose of genetically fusing engineered split protein fragments X and Y to proteins A and B?

<p>To create a noncovalently bound complex (C)</p> Signup and view all the answers

What is the result of the interaction between proteins A and B in the assay?

<p>The split protein fragments X and Y regain native activity (D)</p> Signup and view all the answers

What is the main application of split green fluorescent proteins?

<p>Analyzing protein-protein interactions (A)</p> Signup and view all the answers

What is the significance of the 2008 Nobel Prize in Chemistry?

<p>It was awarded for the development of split green fluorescent proteins (B)</p> Signup and view all the answers

What is the purpose of using engineered split protein fragments X and Y?

<p>To create a protein-protein interaction-dependent readout (C)</p> Signup and view all the answers

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