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Figure 1
Formats for representation of atomic coordinates. (a) PDB format. All data items are in fixed-sized fields and definitions are implicit. (b) mmCIF format. The names of the data items as defined in the mmCIF dictionary are listed first using a loop directive. The values of the data items then follow in a tabular form. This representation enables mmCIF to be flexible, self-consistent and software compatible.

IUCrJ
Volume 7| Part 4| July 2020| Pages 630-638
ISSN: 2052-2525
https://doi.org/10.1107/S205225252000562X