(A) PKCδI and II cDNAs consist of variable domains V1, V2, V3, V4, and V5, and conserved domains C2-like, C1a, C1b, C3, and C4. The C1 regulatory domain contains two cysteine-rich zinc finger motifs. PKCδIV, V, VI, and VII consist of C1a, C1b, V3, C3/V4/C4, and V5 domains. Dark blue, DILD caspase-3 recognition site; light blue, 78 bp insertion in DILD caspase-3 recognition site; and yellow, specific exon for PKCδVI and VII [20–22]. (B) Schematic structure of the PKCδ genome.