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CARDS TX tertiary structure. In all figures, the D1 mART domain is shown in light blue, the steric block of the NAD+-binding pocket is violet, the linker connecting D1 to D2+D3 is dark red, D2 is dark blue, D3 is green, Cys-Sγ atoms are yellow spheres, and F591 is bright red. The aromatic patch in D3 is shown as orange sticks.
