is a type of enzyme
that transfers phosphate
groups from ATP
to a specified substrate or target. Typically, the target is "activated" or "energized" by being phosphorylated. All kinases require a divalent metal ion
such as Mg2+
to transfer the phosphoryl group. Kinases are studied in biochemistry
There are many different types of kinases; each named for the target substrate.
Some notable kinases are:
protein kinase, Janus kinase, tyrosine kinase, focal adhesion kinase, creatine kinase, pyruvate kinase, hexokinase.