ClustalW alignment of predicted translation products of a bark beetle-specific gene cluster. The predicted protein sequences are for IPG001B01 [CB407747] and IPG001D12 [CB408591] from I. pini and DpoD12-1 [EZ115190] and DpoD12-2 [EZ115588] from D. ponderosae. Perfectly conserved amino acids are indicated by asterisks, similar amino acids are indicated by a colon below the alignment. The putative N-terminal signal peptide region is overlined. The conserved cysteine residues are indicated with a star above the alignment.