407616.fig.007a
(a)
407616.fig.007b
(b)
407616.fig.007c
(c)
Figure 7: Superposed active sites of ADK and Arg138 mutated ADK with bis(adenosine)-5′-tetraphosphate (a); focus on Arg138 residue in Arg138 mutated enzymes (b); superposed active sites of ADK and Arg175 mutated ADK with bis(adenosine)-5′-tetraphosphate (c).