Description: sh-decapeptide-5 sp is a single chain human peptide produced synthetically to be identical to a portion of the protein, eosinophil cationic protein, and contains 10 amino acids consisting of arginine, asparagine, cysteine, glutamine, lysine, tryptophan and tyrosine. the parent protein contains a maximum of 160 amino acids which may contain disulfide bonds and/or glycosylation, and consists of the proper sequence of the 20 standard amino acids.