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Packing of molecules in the structures of (a, b) the dodecamer, (c, d) hexamer 3p4j and (e, f) hexamer 1i0t viewed along the helices and along the perpendicular direction parallel to the shortest edge of the corresponding unit cell. For the dodecamer, the standard monoclinic C-centered cell is shown in black and the nonstandard monoclinic I-centered cell is shown in blue.
