Catalase involved in the oxidative stress response serving to protect cells from toxicity (Probable) (PubMed:25243607, PubMed:28456303). For instance plays a role in defending against oxidative damage induced by excessive copper stress (PubMed:25243607). Not required for maintaining normal lifespan (PubMed:14996832). 2 H2O2 = 2 H2O + O2 Up-regulated in response to Cu(2+) (PubMed:25243607). Up-regulated in response to phoxim (an organophosphorus insecticide) and carbaryl (a carbamate insecticide) (PubMed:28456303). No defects in lifespan or egg laying capacity (PubMed:14996832). Abolishes ctl-1 enzymatic activity and reduces the global levels of catalase activity to 75% of the total catalase activity observed in wild-type animals (PubMed:14996832). Belongs to the catalase family. Was originally reported to play a role in determining adult lifespan. However, the paper was later retracted due to errors in the data.