Catalytic diversity Proteins as a class of macromolecules are highly effective catalysts for an enormous diversity of chemical reactions because of their capacity to specifically bind a very wide range of molecules. TABLE 8.8 Six major classes of enzymes Class Type of reaction Example Chapter 1.Oxidoreductases Oxidation-reduction Lactate dehydrogenase 16 2.Transferases Group transfer Nucleoside monophosphate 9 kinase(NMP kinase) 3.Hydrolases Hydrolysis reactions(transfer of Chymotrypsin 9 functional groups to water) 4.Lyases Addition or removal of groups Fumarase 17 to form double bonds 5.Isomerases Isomerization(intramolecular Triose phosphate isomerase 16 group transfer) 6.Ligases Ligation of two substrates Aminoacyl-tRNA synthetase 30 at the expense of ATP hydrolysisCatalytic diversity Proteins as a class of macromolecules are highly effective catalysts for an enormous diversity of chemical reactions because of their capacity to specifically bind a very wide range of molecules