Description: barley sh-polypeptide-3 is a single chain recombinant human peptide, produced by transgenic barley after transient expression or stable insertion of a copy of a human gene into its dna. the starting gene is synthesized to be identical to the human gene which codes for keratinocyte growth factor. it contains a maximum of 194 amino acids, which may contain disulfide bonds and/or glycosylation. the protein consists of the proper sequence of the 20 standard amino acids.