Positions of conserved (identical) residues within eukaryotic sequence and among eukaryotic, bacteriophage and E. coli diadenosine tetra-phosphatase. Residue 140 is an Asp in diadenosine tetra-phosphatase. () residue is conserved between eukaryotic sequences and diadenosine tetra-phosphatase. Bacteriophage and diadenosine tetra-phosphatase show sequence similarities between positions 58 to 140. The regions of highest conservation are : 58-63, 85-93, 136-140, 188-191, 321-325.
