Enzyme Classification NMP kinase:ATP NMP ADP NDP E.C.2.7.4.4 TABLE 8.3 Six major classes of enzymes Class Type of reaction Example Chapter 1.Oxidoreductases Oxidation-reduction Lactate dehydrogenase 16 2.Transferases Group transfer Nucleoside monophosphate kinase(NMP kinase) 3.Hydrolases Hydrolysis reactions(transfer of Chymotrypsin functional groups to water) 4.Lyases Addition or removal of groups to form Fumarase 18 double bonds 5.Isomerases Isomerization(intramolecular group Triose phosphate isomerase 16 transfer) 6.Ligases Ligation of two substrates at the expense Aminoacyl-tRNA synthetase 29 of ATP hydrolysisEnzyme Classification NMP kinase: ATP + NMP ADP + NDP E.C. 2.7.4.4