Phosphotransferase

$${\displaystyle \text{A}-\text{P}+\text{B}\stackrel{-\rightharpoonup }{\leftharpoondown -}\text{B}-\text{P}+\text{A}}$$

Where P is a phosphate group and A and B are the donating and accepting molecules, respectively.

Classification

Phosphotransferases are generally classified according to the acceptor molecule.

• EC 2.7.1 Phosphotransferases with an alcohol group as acceptor
• EC 2.7.2 Phosphotransferases with a carboxy group as acceptor
• EC 2.7.3 Phosphotransferases with a nitrogenous group as acceptor
• EC 2.7.4 Phosphotransferases with a phosphate group as acceptor
• EC 2.7.9 Phosphotransferases with paired acceptors. In these reactions, a single triphosphate-nucleotide transfers two phosphates to two different acceptor molecules, resulting in a monophosphate-nucleotide and two phosphorylated products.