Crystallographic Information Framework

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Macromolecular dictionary (mmCIF) version 2.0.09




   The number of the polymeric chains in a unit cell. In the case
   of heteropolymers, Z is the number of occurrences of the most
   populous chain.

   This data item is provided for compatibility with the original
   Protein Data Bank format, and only for that purpose.

Type: int

Mandatory item: no

The permitted range is [1, infinity)

Category: cell