s-Sea Anemone Heptapeptide-1 SP is a single chain peptide containing 7 amino acids consisting of arginine, cysteine, glutamine, lysine and threonine. It is synthetically produced based on a sequence from Kappa-stichotoxin-Hmg1a found in the sea anemone Heteractis magnifica. The parent protein contains a maximum of 74 amino acids which may contain disulfide bonds and/or glycosylation, and consists of the proper sequence of the 20 standard amino acids.