Figure 2 - full size

Figure 2.
Figure 2. Structure of ΔI-SM. (a) Molecular structure of ΔI-SM. (b) Comparison of the conformation of ΔI-SM (green) with the GyrA intein^12 (red). (c) Dimer observed in the asymmetric unit, with zinc ions shown in cyan. (d) Coordination of the zinc ion by residues Glu424, His429, and the C-terminal aminosucciminide (SUC440) from one molecule (green), and His439 from the second molecule (red) in the asymmetric unit. Figure 2. Structure of ΔI-SM. (a) Molecular structure of ΔI-SM. (b) Comparison of the conformation of ΔI-SM (green) with the GyrA intein[3]^12 (red). (c) Dimer observed in the asymmetric unit, with zinc ions shown in cyan. (d) Coordination of the zinc ion by residues Glu424, His429, and the C-terminal aminosucciminide (SUC440) from one molecule (green), and His439 from the second molecule (red) in the asymmetric unit.