In order to analyze the expression principle and the bacteriostatic activity of chickenβ-defensin-13(Gal-13),the mature peptide gene sequence of Gal-13 was augmented and inserted into pPICZαA to build the recombinant plasmid pPICZαA-Gal-13,and the correct recombinant plasmid was linearized and transformed into Pichia pastoris strain X-33 by electroporation.The result showed that the mature peptide gene of Gal-13 consists of 312 bp,encoding 36 amino acids.The recombination strain,which was induced by methyl ...