Fig. 2. Alignment of the predicted amino acid sequences of several Delta proteins. Amino acid sequences of Delta proteins from S. purpuratus, L. variegatus, X. laevis, (Chitnis et al., 1995), M. musculus (Bettenhausen et al., 1995) and D. melanogaster (Kopczynski et al., 1988) were aligned using Pileup and Pretty in the GCG Wisconsin Package. Conserved domains are labeled. The mutation site used to generate truncated LvDelta is indicated by an arrowhead.