Bovine Erythrocyte Superoxide Dismutase

Abstract

Abstract The complete primary structure of reduced and S-carboxy-methylated bovine erythrocyte superoxide dismutase has been derived through analysis of peptides from peptic, plasmin, and hydroxylamine digests of the intact polypeptide chain, and from chymotryptic, subtilisin, and dilute acid digests of derived peptides. From these data, the following unique amino acid sequence of 151 residues was deduced, corresponding to a molecular weight of 15,600, in each of the 2 apparently identical subunits of the protein molecule. (Cmc denotes S-carboxymethylcysteine.) [see PDF for equation]