Weill M, Philips A, Chourrout D, Fort P.
Biol Cell. 2005 Nov;97(11):857-66. doi:10.1042/BC20050018
The caspase family in urochordates: distinct evolutionary fates in ascidians and larvaceans.
O. dioica has three caspases, all related to the CSP3/7 family.