Figure 5.

Alignment of D. melanogaster SSL, βCK2, and Stellate proteins. Identical amino acid positions shared between SSL and βCK2 or Ste are shown as shadowed boxes. The Asp/Glu-rich and C-terminal domains of the βCK2 are indicated (see text for details). Invariant residues in a cystein-rich, potential metal-binding motif CPX₃CX₂₂CPXC (29) are boxed. Positions of βCK2 introns (numbered from the beginning of the coding region of βCK2 gene) are marked with blackened triangles (introns shared by Drosophila, huma, and nematode), shadowed triangles (introns shared by Drosophila and human), or blanked triangles (Drosophila-specific introns).