Superoxide dismutase (SOD) acts as a primary defence against reactive oxygen species (ROS) by converting O 2− to O2 and H2O2. Members of this enzyme family include CuZnSOD, MnSOD and FeSOD. Most eukaryotes harbor CuZnSOD and MnSOD, and FeSOD is found in plants and prokaryotes. This protocol is to demonstrate how to prepare the cellular extract for the identification and characterization of SODs in planta.
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