... Kazusa DNA Research Institute (Chiba,Japan), using a pair of primers (forward, 5¢-CTAGAATTCAACAGCACAGCATGCTGG-3¢; reverse, 5¢-AGAGAATTCTGCCTGGTTTAAGAGACC-3¢; restriction sitesunderlined). ... identified.Although calpain 7 contains a C2-like domain, it lacks a penta-EF-hand domain and is classified as an atypicalcalpain. As one of the significant structural features,mammalian calpain 7 ... suggests that calpain 7 also functions as a protease rather than as a structural protein in mamma-lian cells, and that MIT domains are involved in cal-pain 7 activation. This notion leads us to suggest...