Macromolecular CIF dictionary

The macromolecular CIF dictionary (mmCIF) is a set of data names designed to describe the macromolecular crystallographic experiment and its results. It includes the complete set of data names available in the Core CIF dictionary, but in a somewhat different formalism.

Current official release

• Version 2.0.09 of 27 June 2005
  • HTML version
  • Formatted pdf version [Chapter 4.5 of International Tables for Crystallography Volume G: Definition and exchange of crystallographic data, First edition (2005)]
• Search for a data name.

Archival versions

• Version 2.0.03 of 9 November 2000.
• Version 1.0.00 of 14 October 1997.
  • Differences between versions 2.0 and 1.0

Work in progress

Comprehensive information on the mmCIF dictionary project, including background and reference materials and software tools is maintained at

• the mmCIF Resources page of the Protein Data Bank

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Updated 21 July 2005