So let's focus on the structure of protein phosphatase one. So this is protein phosphatase one and in the active form, protein phosphatase one PP one is attached to a regulatory subunit and that regulatory subunit basically allows the PP one to actually interact with the glycogen and the target enzymes and target proteins. Now, when this signal transduction pathway is activated and we want to basically turn on glycogen breakdown and turn off glycogen synthesis, what the PKA also does is the following two things. Number one, PKA goes on and phosphorylates the regulatory section of this molecule. And once phosphorylating that and once it phosphorylates that regulatory section, the PP one actually dissociates. And as soon as that PP one dissociates, it's no longer as active.