Figure 1

A) Alignment of the 3 gallin predicted peptide forms. The sequences are referenced to the layer line sequence. Predicted polymorphism in the peptide sequence observed from sequencing genomic DNA from lines of layer, broilers and silkie hens (n = 8/line) are shaded in black with white type with the alternative amino acid shown above the sequence. Differences between the 3 sequences are indicated by light shading and are found only in the signal peptide. B) Predicted protein sequence of ovodefensins from zebra finch (Taeniopygia guttata). Taeniopygin 1 is homologous to gallin and taeniopygin 2 to duck BPS1.