Data Item _emd_helical_parameters.axial_symmetry
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General 
- Item name
- _emd_helical_parameters.axial_symmetry
- Category name
- emd_helical_parameters
- Attribute name
- axial_symmetry
- Required in PDB entries
- yes
- Used in currrent PDB entries
- No
Item Description
Symmetry of the helical axis, either cyclic (Cn) or dihedral (Dn), where n>=1.
Item Example1
C1
Item Example2
C3
Item Example3
D7
Data Type 
- Data type code
- point_group_helical
- Data type detail
- Point group symmetry for helices in Schoenflies notation
- Primitive data type code
- char
- Regular expression
- [CD][1-9][0-9]*