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Macromolecular dictionary (mmCIF) version 2.0.09




   The fraction of the atom type present at this heavy-atom site
   in a given derivative. The sum of the occupancies of all the
   atom types at this site may not significantly exceed 1.0 unless
   it is a dummy site.

Type: float

Mandatory item: no

The permitted range is [0.0, infinity)

Enumeration default: 1.0

Category: phasing_MIR_der_site