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Macromolecular dictionary (mmCIF) version 2.0.09




   Data items in the STRUCT_REF category allow the author of a
   data block to relate the entities or biological units
   described in the data block to information archived in external

   For references to the sequence of a polymer, the value of
   the data item _struct_ref.seq_align is used to indicate
   whether the correspondence between the sequence of the entity
   or biological unit in the data block and the sequence in the
   referenced database entry is 'complete' or 'partial'. If
   this value is 'partial', the region (or regions) of the
   alignment may be delimited using data items in the
   STRUCT_REF_SEQ category.

   Similarly, the value of _struct_ref.seq_dif is used to indicate
   whether the two sequences contain point differences. If the
   value is 'yes', the differences may be identified and annotated
   using data items in the STRUCT_REF_SEQ_DIF category.


Example 1 - based on PDB entry 5HVP and laboratory records for the structure corresponding to PDB entry 5HVP.
 seq_pdb     1  .  PDB      5HVP      .         .
    ; The structure of the closely related compound,
      isobutyryl-pepstatin (pepstatin A) in complex with
 seq_genbank .  1  GenBank  AAG30358  complete  yes  .

Category groups:
Category key:

Mandatory category: no