Catalytic diversity催化多样性 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.主要六大类催化反应 TABLE 8.8 Six major classes of enzymes Class Example Chapter 氧化还原酶 Type of reaction 1.Oxidoreductases Oxidation-reduction Lactate dehydrogenase 16 2.Transferases Group transfer Nucleoside monophosphate 9 转移酶 kinase(NMP kinase) 3.Hydrolases:水解酶Hydrolysis reactions(transfer of Chymotrypsin 9 functional groups to water) 4.Lyases 裂解酶 Addition or removal of groups Fumarase 17 to form double bonds 5.Isomerases!异构酶somerization(intramolecular Triose phosphate isomerase 16 group transfer) 6.Ligases Ligation of two substrates Aminoacyl-tRNA synthetase 30 连接酶 at the expense of ATP hydrolysisCatalytic diversity 催化多样性 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. 主要六大类催化反应 氧化还原酶 转移酶 水解酶 裂解酶 异构酶 连接酶