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Packing of vault particles with dimensions 400 × 400 × 700 Å in crystal D with unit-cell parameters a = 708.0, b = 385.0, c = 602.9 Å, β = 124.8°. Packing is shown (a) in the ac plane, (b) in the ab plane, (c) parallel to the N-fold rotation axis and (d) perpendicular to the N-fold rotation axis. A surface-rendered three-dimensional image of vault was obtained from cryoelectron microscopy and single-particle reconstruction.
