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Figure 6.
Figure 6. (a) Putative active site region of E. coli PPX
located at the interface of domains I and II. The pertinent
residues are shown in stick representation. Surface
representation of the interface between domains I and II in (b)
E. coli PPX (closed state) and (c) A. aeolicus PPX/GPPA (open
state). Both molecules are shown in the same orientation and
were first superposed as in Figure 3. Domain colors are as in
Figure 1, with highly conserved residues shown in yellow.
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