Figure 7From: Profiling of proteolytic enzymes in the gut of the tick Ixodes ricinus reveals an evolutionarily conserved network of aspartic and cysteine peptidasesNucleotide and deduced amino acid sequence of Ixodes ricinus cathepsin D (IrCD). The depictions of PCR primers, putative 21 AA signal peptide, two potential N-glycosylation sites and active site residues D79, Y111, D270 are as in Fig 4.Back to article page