Figure 4

Conserved splice sites mapped to the conserved domain of an ancient phosphatase. Eleven sequences with conserved splice sites could be mapped to the consensus sequence of ancient phosphatase (CDD identifier cd00144), cf. Fig. 3. The 300 amino acid-long conserved protein domain is shown on the top, with a residue number indicated at the bottom. This sequence can be found by using the entry cd00144 in the CDD at NCBI. The short colored boxes represent a 30 amino acid long splice site region, two examples of a 'cd00144-related' sequence can be found in Fig. 2. Conserved splice sites positions are indicated by the vertical lines on the conserved domain sequence and arrowheads, while intron phase is also shown.