Has an organic peroxide-dependent peroxidase activity. Exhibits strong peroxidase activity using organic hydroperoxides as cosubstrates, weak peroxidase activity using hydrogen peroxide and negligible catalase activity. May have a role in elimination of reactive oxygen species, in particular by deactivating hydroperoxides. kcat is 13 sec(-1) for H(2)O(2). kcat is 320 sec(-1) for t-butyl hydroperoxide. kcat is 330 sec(-1) for cumene hydroperoxide. kcat is 529 sec(-1) for 9S-HPODE. Monomer. Belongs to the catalase family.