# What does phosphorylation do to a molecule?

Phosphorylation is the addition of a phosphoryl group $\left(P {O}_{3}^{2 -}\right)$ to a molecule. Enzymes are needed for this to happen. This happens in proteins, some lipids, and sugars. Adenosine can undergo phosphorylation to create $\text{ATP, ADP, or AMP}$.