Figure 1.

(A) Secondary structure of AvBD8. The white box indicates the signal peptide and gray box indicates the mature peptide. S-S indicates disulfide bonds. (B) The 3-dimensional structure of AvBD8. The letters are abbreviations of amino acids and the numbers beside the abbreviations indicate the position of amino acids in the protein. Alpha helices are shown as red rockets and beta strands are shown as yellow planks; blue lines indicate turns and yellow sticks indicate disulfide bonds. (C) Western blot of recombinant AvBD8 using the anti-6ⅹHistidine antibody. Abbreviation: AvBD8, avian β-defensin 8.