How does cAMP regulate protein kinase A?
cAMP binds to the regulatory subunits of protein kinase A, causing a conformational change that releases the catalytic subunits to carry out phosphorylation.
cAMP phosphorylates protein kinase A, causing a conformational change that leads to increased activity.
cAMP increases the transcription of the genes for protein kinase A.
cAMP binds to the catalytic subunits, causing a conformational change that leads to increased activity.
cAMP binds to the regulatory subunits of protein kinase A, promoting the exchange of bound GDP for GTP, which releases the catalytic subunits to carry out phosphorylation.