= Macromolecular Crystallographic Information File
{wiki=Macromolecular_Crystallographic_Information_File}
The Macromolecular Crystallographic Information File (mmCIF) is a specialized data format used to describe the structures of macromolecules, such as proteins and nucleic acids, that have been determined through X-ray crystallography. It is an extension of the CIF (Crystallographic Information File) format, which was originally designed for small-molecule crystallography.
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