What is the role of catabolite activator protein (CAP) in the lactose operon of E. coli?

Biology (MindTap Course List)
11th Edition
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Chapter14: Gene Regulation
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Problem 13TYU: INTERPRET DATA Develop a simple hypothesis that would explain the behavior of each of the following...
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. What is the role of catabolite activator protein (CAP) in the lactose operon of E. coli?

  1. it prevents RNA polymerase from binding to the promoter when lactose levels are high
  2. it assists RNA polymerase in binding to the promoter when glucose levels are high
  3. it prevents RNA polymerase from binding to the promoter when glucose levels are low
  4. it assists RNA polymerase in binding to the promoter when glucose levels are low
  5. it prevents RNA polymerase from binding to the promoter when lactose levels are low

 

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