Number of cysteine peptidases and their inhibitors in selected arthropod species. Schematic evolutionary tree of fully sequenced arthropods including for each species the number of inhibitory cystatin (I25CPI) and thyropin (I31Thy) domains and the C1A (papain-like, C1APap) and C13 (legumain-like, C13Leg and GPI:protein transamidases, C13GPI) cysteine peptidases, putative targets of both inhibitors. MYA, million years ago.
Santamaría et al. BMC Genomics 2012 13:307 doi:10.1186/1471-2164-13-307