You are studying how gene expression is regulated in the cell. For gene z, you find that while there are high levels of mRNA in the cell, there are low levels of the protein encoded by gene z. Describe a regulatory mechanism that could explain this finding that occurs after translation.

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Chapter9: Gene Expression And Gene Regulation
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**Topic: Post-Translational Regulation in Gene Expression**

You are studying how gene expression is regulated in the cell. For gene z, you find that while there are high levels of mRNA in the cell, there are low levels of the protein encoded by gene z. Describe a regulatory mechanism that could explain this finding that occurs after translation. 

**Explanation:**

This situation may be explained by post-translational modifications or regulatory mechanisms that reduce protein stability or promote protein degradation. For instance, the protein encoded by gene z could be rapidly targeted for degradation by the ubiquitin-proteasome pathway. Alternatively, modifications such as phosphorylation could make the protein more susceptible to degradation or sequestered in an inactive form. Understanding these mechanisms can provide insights into how gene expression is finely controlled beyond the level of mRNA production.
Transcribed Image Text:**Topic: Post-Translational Regulation in Gene Expression** You are studying how gene expression is regulated in the cell. For gene z, you find that while there are high levels of mRNA in the cell, there are low levels of the protein encoded by gene z. Describe a regulatory mechanism that could explain this finding that occurs after translation. **Explanation:** This situation may be explained by post-translational modifications or regulatory mechanisms that reduce protein stability or promote protein degradation. For instance, the protein encoded by gene z could be rapidly targeted for degradation by the ubiquitin-proteasome pathway. Alternatively, modifications such as phosphorylation could make the protein more susceptible to degradation or sequestered in an inactive form. Understanding these mechanisms can provide insights into how gene expression is finely controlled beyond the level of mRNA production.
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