When Glucose Is High Camp Is?
When the Concentration of Intracellular Glucose Is High (Lower Panel), cAMP Levels Are Low. Without the Adjacent Binding of the Cap-cAMP Complex, Rna...
When the concentration of intracellular glucose is high (lower panel), cAMP levels are low. Without the adjacent binding of the CAP-cAMP complex, RNA polymerase does not bind to DNA as efficiently, resulting in low rates of transcription for the lacZ, lacY, and lacA genes. Glucose production is diminished.
What does glucose do to cAMP levels?
Glucose is thought to reduce cAMP level by decreasing the phosphorylated form of enzyme IIAGlc, which is proposed to be involved in the activation of adenylate cyclase (3–5). Glucose also is known to reduce the CRP level through the autoregulation of the crp gene (7–10). When E.
What effect does high levels of glucose have on the lac operon?
Under conditions of high glucose (a), the cAMP producing enzyme adenylate cyclase is inactive and silences the lac operon´s transcription.
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