ATP is the phosphoryl
group donor
The free energy of the
phosphorylation reaction is large.
Phosphorylation is known to
be an effective way of regulating protein and in eukaryotic cells, about 30% pf
the protein are phosphorylated. Thus, the enzyme responsible for the phosphorylation
reaction is known as kinases. However, ATP is required in the process
phosphorylation because it is needed as a donor.
