What type of a receptor is the ß-adrenergic receptor? O rhodopsin O four-trans membrane helix receptor O six-trans membrane helix receptor seven-trans membrane helix receptor O nine-trans membrane helix receptor Which of the following occurs when CAMP levels are elevated? a) The regulatory sub unit of PKA dissociates from the catalytic subunit resulting in an active kinase. Binding of ATP by PKA at the active site causes an alteration of the b) quaternary structure of the R2C2 complex of PKA and causes the complex to dissociate. The R2C2 complex becomes two active R1C1 complexes that can phosphorylate target sequences. d) CAMP will bind to the active site of PKA and stimulate activity. e) CAMP binds to allosteric sites on the catalytic subunit.
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