In this example, two structure pairs have similar topology in
core regions, with TM-score=0.7 and 0.67 respectively.
However, the tail/loop variations can result in
significant differences in RMSD (from
1.9 Angstrom to 10.5 Anstrom).
The figure is taken from
Figure 5 of Nucleic Acids Research (2005) 33, 2303-2309.
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