In chemistry and biochemistry, a kinase, alternatively known as a phosphotransferase,'s a type of enzyme that transfers phosphate groups from high-energy donor molecules, such as ATP, to specific substrates. The process's referred to as phosphorylation. An enzyme that removes phosphate groups's known as a phosphatase. Types One of the largest group of kinases are protein kinases, which act on, and modify the activity of, specific proteins. Kinases are used extensively to transmit signals and con… (More on Kinase)