Data Item _emd_helical_parameters.delta_phi
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General 
- Item name
- _emd_helical_parameters.delta_phi
- Category name
- emd_helical_parameters
- Attribute name
- delta_phi
- Required in PDB entries
- yes
- Used in currrent PDB entries
- No
Item Description
The angular rotation per helical subunit in degrees. Negative values indicate left-handed helices; positive values indicate right handed helices.
Item Example
-34.616000
Data Type 
- Data type code
- float
- Data type detail
- float item types are the subset of numbers that are the floating numbers.
- Primitive data type code
- numb
- Regular expression
- -?(([0-9]+)[.]?|([0-9]*[.][0-9]+))([(][0-9]+[)])?([eE][+-]?[0-9]+)?
- Units
- degrees
Allowed Boundary Conditions
| Minimum Value | Maximum Value |
|---|---|
| -180.0 | 180.0 |