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Figure 1.
FIGURE 1. The TREX1 dimer in complex with ssDNA. The TREX1
exonuclease dimerizes about a 2-fold axis perpendicular to the
-strands (monomers shown
in blue and green). This interaction creates an extended
anti-parallel -sheet through the core
of the dimer and places the two active sites on opposite outer
edges. The complex contains ssDNA (shown as sticks) and Ca^2+
(shown as red spheres) bound in both of the active sites.
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