Figure 3. N-terminal extensions and cleavage sites. The N-terminal regions (excluding secretory peptide leader sequences) of the human type 2 cystatins are shown up to the conserved G11. Cleavage sites detected in saliva or the purified protein are shown by an arrow (Al-Hashimi et al., 1988; Saitoh et al., 1988; Popovic et al., 1990; Baron et al., 1999a). ⁺None reported.