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Large Structures are large structure entries which exceed the limitations of the original PDB file format
and are released as a single entry without being split into multiple entries.
Since they cannot be expressed in a PDB file, they are released as single files in PDBx/mmCIF and PDBML/XML formats in a different directories of PDB archive ftp site.
ftp site: ftp.pdbj.org/pub/pdb/data/large_structures/
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