Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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What proteins within a cell are phosphorylated when a positive inotropic agent activates the cAMP second messenger system?
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- Under what conditions does the CAP protein become a functional activating protein? Group of answer choices when cAMP is absent and CAP is bound to glucose when glucose is absent and CAP is bound to cAMP none of these when glucose is abundant and CAP is bound to cAMP when cAMP is abundant and CAP is bound to glucosearrow_forwardWhich protein in G-protein cascades plays a role similar to that of elongation factor Ts?arrow_forwardWhat do the cytoplasmic domain of a G protein-coupled receptor and the adaptor protein in the RTK pathway have in common?arrow_forward
- There is a membrane receptor that exerts its effect through increased cAMP synthesis via an activated G protein. A mutant cell line is found to contain an altered form of this receptor that is constantly activated. What specific word describes such an enzyme and explain what effect(s) it has on cellular cAMP levels?arrow_forwardHow could you determine whether a hormone-mediated response hasresulted from the intracellular mediator mechanism or the nuclearreceptor mechanism?arrow_forwardPDHC is an enzyme complex consisting of 3 different enzymes. Which of the following processes regulate the activity of PDH Complex? (multiple answers) A) Phosphorylation/Dephosphorylation of E1 B) High levels of cAMP C) Acetylation/Deacetylation of E1 D) High NADH/NAD+ ratio E) High NAD+/NADH ratioarrow_forward
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