Data Item _struct_sheet_range.symmetry
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General 
- Item name
- _struct_sheet_range.symmetry
- Category name
- struct_sheet_range
- Attribute name
- symmetry
- Required in PDB entries
- no
- Used in currrent PDB entries
- No
Item Description
Describes the symmetry operation that should be applied to the
residues delimited by the start and end designators in
order to generate the appropriate strand in this sheet.
Data Type 
- Data type code
- symop
- Data type detail
- symop item types take the form n_klm, where n refers to the symmetry operation that is applied to the coordinates in the ATOM_SITE category identified by _atom_site_label. It must match a number given in _symmetry_equiv_pos_site_id. k, l, and m refer to the translations that are subsequently applied to the symmetry transformed coordinates to generate the atom used. These translations (x,y,z) are related to (k,l,m) by k = 5 + x l = 5 + y m = 5 + z By adding 5 to the translations, the use of negative numbers is avoided.
- Primitive data type code
- char
- Regular expression
- ([1-9]|[1-9][0-9]|1[0-8][0-9]|19[0-2])(_[1-9][1-9][1-9])?