While ATP is often thought of as an energy carrier, it's structurally related to nucleic acids like DNA and RNA. It consists of:

* Adenine: A nitrogenous base, also found in DNA and RNA.

* Ribose: A five-carbon sugar, also found in RNA.

* Three phosphate groups: These are the key to ATP's energy storage.

The phosphate groups are linked by high-energy bonds. When these bonds are broken, energy is released, which is why ATP is considered the "energy currency" of cells.