PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2504900-2 1989 It has been shown that (a) melanins can function as a scavenger of the superoxide anion radical O2-. (pseudo-superoxide dismutase) and (b) melanins protect microsomes and liposomes against lipid peroxidation which is due to the absorption of light energy (filter effect). Melanins 27-35 immunoglobulin kappa variable 1D-39 Homo sapiens 96-100 6316379-1 1983 The reactions of oxidation of NADH by Dopa and Dopamine-melanins show inhibition with low quantities of Superoxide dismutase, the enzyme which catalyzes the reaction: O2- + O2- + 2H+ leads to H2O2 + O2 and which has been used as an indicator of the involvement of superoxide ions in many biochemical systems. Melanins 56-64 immunoglobulin kappa variable 1D-39 Homo sapiens 192-201