Microbial Cellulose/sr-Spider Polypeptide-3 Hexapeptide-40 is a single chain recombinant protein produced by fermentation in Acetobacter xylinum entrapped within the microbial cellulose matrix synthesized by the same bacteria. The starting gene is synthesized by the fusion of the gene from sr-Spider Polypeptide-3 and {25967; Hexapeptide-40}. The fusion peptide contains 110 amino acids which may contain disulfide bonds and/or glycosylation, and consists of the proper sequence of the 20 standard amino acids.