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Questions and Answers
What is the primary mechanism of controlling protein concentration in the cell for many proteins?
What is the primary mechanism of controlling protein concentration in the cell for many proteins?
- Regulation of protein synthesis (correct)
- Modulation of protein localization
- Regulation of protein degradation
- Selective inhibition of protein translation
What is the process called that leads to the hydrolysis and resynthesis of 300 to 400 g of body protein each day?
What is the process called that leads to the hydrolysis and resynthesis of 300 to 400 g of body protein each day?
- Protein synthesis
- Protein modification
- Protein degradation
- Protein turnover (correct)
What is the measure of a protein's relative susceptibility to degradation?
What is the measure of a protein's relative susceptibility to degradation?
- Protein concentration
- Protein activity
- Half-life (correct)
- Protein localization
What is the typical half-life range of liver proteins?
What is the typical half-life range of liver proteins?
Which type of proteins have half-lives measured in minutes or hours?
Which type of proteins have half-lives measured in minutes or hours?
What is the typical half-life of 'housekeeping' enzymes, such as those of glycolysis?
What is the typical half-life of 'housekeeping' enzymes, such as those of glycolysis?
What is the characteristic of structural proteins like collagen?
What is the characteristic of structural proteins like collagen?
What is the function of the ATP-dependent ubiquitin-proteasome system?
What is the function of the ATP-dependent ubiquitin-proteasome system?
What is the purpose of ubiquitylation in the ubiquitin-proteasome system?
What is the purpose of ubiquitylation in the ubiquitin-proteasome system?
What is the result of the consecutive addition of four or more Ub molecules to a target protein?
What is the result of the consecutive addition of four or more Ub molecules to a target protein?
What is the role of E3 proteins in the ubiquitin-proteasome system?
What is the role of E3 proteins in the ubiquitin-proteasome system?
What is the unique characteristic of the ubiquitin-proteasome system compared to simple hydrolysis by proteolytic enzymes?
What is the unique characteristic of the ubiquitin-proteasome system compared to simple hydrolysis by proteolytic enzymes?
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