Tags: Enzyme.
Type III site-specific deoxyribonuclease (EC 3.1.21.5 type III restriction enzyme restriction-modification system) is an enzyme. This enzyme catalyses the following chemical reaction Endonucleolytic cleavage of DNA to give specific double-stranded fragments with terminal 5′-phosphatesThis group of enzymes has an absolute requirement for ATP but does not hydrolyse it.