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The shape information (reconstructions) of the molecular surface (bottom right) for the nuclear protein EBNA1 (PDB ID code 1B3T) encoded in ZC expansions up to order N = 10, 15, 20, 25 and 30 from a 64×64×64 grid. At N = 20, most of the salient features are captured and this is the default expansion order in ZEAL
