The protein sequence of PRV-1.

The 2 homologous cysteine-rich regions are shown aligned to each other. Identical amino acids are shown in red, conserved cysteine residues in bold red. Similar amino acids are depicted in blue. The position of the leader peptide, the carboxy-terminal hydrophobic region as well as the ω-sites, potential sites of GPI-anchor attachment, are shown. The postulated cysteine-disulfide bridges are indicated by brackets.