an intermediate oxidation product of iaa was found to be a hydroperoxide species that reacted with the ferric enzymes to form compound i at second order rate constants of 6.8 x 10 ( 3 ) m-1 -- s-1 for peroxidase a and 2.0 x 10 ( 6 ) m-1 -- s-1 for peroxidase c at ph 4.4 the hydroperoxide concentration reached about one-half of the initial iaa concentration at the end of the oxygen-consuming reaction and then decreased slowly .
C0030011
oxidation
C0027021
peroxidase