Kinase

(noun. /KAI-nayz/) 

by Madison Williams

What does it mean? 

A kinase is an enzyme that promotes the transfer of a phosphate group [(PO4)3-] from an ATP molecule to a substrate or protein. Kinases are important for many biological processes, such as DNA replication and metabolism.

How do I use it in a sentence?

“Can we measure the activity of different kinases in these cells?

“One type of kinase, protein kinase A, phosphorylates many substrates to affect DNA synthesis and cell growth.”

Diagram of a reaction catalyzed by a kinase. Image courtesy of BellBrook Labs.

Related terms

Phosphatase – an enzyme that removes a phosphate group from a protein.
Enzyme
Substrate
ATP

Fields of study in which this word is commonly used

Physiology
Biochemistry
Molecular Biology
Chemistry