sr-Honey Bee Defensin-1 is a single chain recombinant protein produced by fermentation in E. coli. The starting gene is synthesized to be identical to the gene which codes for Defensin-1 derived from the honey bee, Apil mellifera. The parent protein contains a maximum of 95 amino acids which may contain disulfide bonds and/or glycosylation and consists of the proper sequence of the 20 standard amino acids.