Figure 5.

A phosphatase domain in the C. elegans capping enzyme. The amino acid sequence of the C. elegans capping enzyme (Cel CE) from residues 59 to 171 is aligned with the 167-amino acid baculovirus-encoded protein phosphatase (Bac PP; GenBank accession no. M96763) and the sequences of two phosphatase-like C. elegans gene products: T23G7.5 (GenBank accession no. Z68319) and F54C8.4 (GenBank accession no. Z22178). Gaps in the sequences are indicated by dashes (-). Amino acids conserved in all four proteins are denoted by asterisks. The protein phosphatase signature motif is highlighted in the shaded box. The active site cysteine is in boldface type.