If there is one thing that is known about the mechanisms that govern signal transduction, it's that not very much is known. When signaling molecules bind to a cellular receptor, they set off a chain ...

Signal transduction describes the process of conversion of external signals, such as hormones, growth factors, neurotransmitters, and cytokines, to a specific internal cellular response ...

The signal transduction cascade begins when adenylyl cyclase, a membrane- bound enzyme, becomes activated by G-protein molecules associated with the adrenergic receptor. Adenylyl cyclase creates ...