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<title>mmCIF File Format</title>
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- <strong>mmCIF File Format</strong>
- <p>The mmCIF file format (macromolecular Crystallographic
- Information) was developed under the auspices of the International Union of Crystallography (IUCr) to extend the Crystallographic Information
- File (CIF) data representation used for describing small molecule
- structures and associated diffraction experiments.</p>
- <strong>Merits of mmCIF file format</strong>
- <ul>
- <li>Large structures (containing >62 chains and/or 99999 ATOM
- records) that cannot be fully represented in the PDB file format are
- available in the PDB archive as single PDBx/mmCIF files.</li>
- <li>PDBx/mmCIF file format provides richer data annotation</li>
- <li>PDBx/mmCIF became the standard PDB archive format in 2014.
- Since 2016 the PDB File Format is no longer being modified or
- extended to support new content.
- </li>
- </ul>
+ <strong>What is mmCIF ?</strong>
+ <br />mmCIF stands for 'macro-molecular Crystallographic Information
+ File'. This format was developed by the PDB consortium and the
+ International Union of Crystallography (IUCr), based on
+ Crystallographic Information File (CIF), a format used for describing
+ the structures of small molecules.
+ <br />mmCIF became the recommended format for the exchange of
+ biomacromolecular structures in 2014.
+ <p>
+ <strong>mmCIF and Jalview</strong> <br />Since Jalview 2.10, mmCIF
+ is used for structures downloaded from the PDB. This means:
+ </p>
+ <ol>
+ <li>Jalview can use the mmCIF to read structures that are too
+ large to be represented by a single PDB file. (ie, with more than
+ >62 chains and/or 99999 ATOM records).</li>
+ <li>Jalview users will have access to the richer annotation
+ provided by PDBx/mmCIF files.</li>
+ <li>There may be slight differences between sequences
+ containing modified residues for structures downloaded in mmCIF
+ format. This is because mmCIF differs from the PDB format in the
+ way it describes non-standard sequence data.</li>
+ </ol>
- <em>mmCIF file format support for importing 3D structure data from
- flat file and EMBL-PDBe via mmCIF was added in Jalview 2.9.1</em>
+ <em>Support for importing 3D structure data from flat file and
+ EMBL-PDBe as mmCIF was added in Jalview 2.10</em>
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