Cyclic AMP (cAMP) is found in both eukaryotic and prokaryotic cells. It acts as a crucial second messenger within these cells.
Intracellular Location of cAMP
The reference indicates that cAMP is primarily located inside cells. This means it is not usually found in the spaces between cells.
cAMP Concentrations
The concentration of cAMP within a cell is normally quite low, approximately 0.1-1.0 μM. However, in response to specific stimuli, this level can increase dramatically and rapidly.
Role as a Second Messenger
- cAMP acts as a second messenger.
- It mediates the effects of various hormones and other extracellular signals.
- This allows for quick, amplified responses within cells.
- Intracellular concentrations can increase up to 20-fold within seconds of cell activation.
Summary
| Feature | Description |
|---|---|
| Location | Found in both eukaryotic and prokaryotic cells. |
| Concentration | Normal range: 0.1-1.0 μM. Can increase rapidly (up to 20x) upon activation. |
| Function | Acts as a key second messenger in cell signaling. |
