Peroxidases are heme-containing enzymes that oxidize hydrogen peroxide.
                                                                      All have the same initial Enzyme Commission numbers (1.11.1.x) but
                                                                      vary in the substrates acted upon, thus the different last digit number.

Family of Peroxidases...  H2O2 --> 2 H2O + O2
EC 1. 11 .1 .x
 Enzyme Commission #		 substrates hydrogen peroxide, organic hydroperoxides, or lipid peroxides
   
cytochrome-c peroxidase
 EC 1.11.1.5		 catalase
EC 1.11.1.6
peroxidase
EC 1.11.1.7		 thyroid peroxidase
EC 1.11.1.8
glutathione peroxidase
EC 1.11.1.9		 lignin peroxidase
EC 1.11.1.14
   
 each enzyme has a unique amino acid sequence,
yet they all catalyze a similar chemical reaction. 
       back