How Does Protein Kinase a Effect Responses at the Level

Multiple Choice

How does protein kinase A effect responses at the level of transcription?

A) It binds a cAMP-sensitive regulatory element (CRE)
B) It phosphorylates CREBs (cAMP-regulated gene regulatory proteins)
C) PKA phosphorylates a small molecule that enters the nucleus and binds CRE
D) The regulatory subunits deactivate repressors
E) The regulatory subunits of the enzyme enter the nucleus and bind DNA