Peroxidases exist as monomers, dimmers, or tetramers. Their gene locations vary among different chromosomes. Peroxidases have some organ, tissue, cellular and sub-cellular specific distribution patterns, performing some specific functions. Peroxidases belong to a large family of isoenzymes present in almost all living organisms. These are generally heme containing enzymes ranging in Mw from 35-100 Kd. Mammalian peroxidases are much larger proteins (576-738 amino acids) than the plant counterparts[1].