Figure 2.

Comparison of the modeled structure of R.Eco29kI (a) and the catalytic domain of I-TevI (b). Secondary structures are colored (helices in red, strands in orange). Amino acid residues of the catalytic pocket in both enzymes and the non-essential R86 residue of R.Eco29kI are indicated and labeled. Positively charged residues are shown in blue, negatively charged residues are shown in red, neutral polar residues are shown in yellow.