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Fig. 3. Cα trace for the superposition of two monomers (red and green) in the NaeI dimer. The transformational matrix of the Endo domain was used for the superposition of the entire molecule. The superposition showed ∼5 Å displacement for the backbone atoms of the Topo domain, indicating that the Endo and Topo domains have significantly different orientation of their 2-fold axes.
