Schematic comparison of proto-lbc SK15 cDNA to onco-lbc cDNA. Boxed areas denote open reading frames, and single lines indicate untranslated regions. Onco- and proto-lbc cDNAs encode identical sequence until the end of the PH domain after which proto-lbc cDNA encodes a different, extended 3′ sequence. EF, hand motif; α-HEL, predicted α-helical region, PP, proline-rich sequence. Numbers underneath each schematic refer to amino acid positions.