Figure 4From: Type II restriction endonuclease R.Hpy188I belongs to the GIY-YIG nuclease superfamily, but exhibits an unusual active siteA structural model of R.Hpy188I with presumptive active site residues and the pair of cysteines (A) compared with alternative locations of the R84 residue transferred to positions 104 or 105, i.e. "computationally modeled" double mutants R84A/T104R (B) and R84A/N105R (C), respectively. The orientation of models is the same as in Figure 2.Back to article page