Data Item _em_helical_entity.angular_rotation_per_subunit
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General 
- Item name
- _em_helical_entity.angular_rotation_per_subunit
- Category name
- em_helical_entity
- Attribute name
- angular_rotation_per_subunit
- Required in PDB entries
- no
- Required for PDB deposition
- yes
- Used in current PDB entries
- Yes, in about 0.5 % of entries
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 |
Related Items 
| Related Item Name | Relation Type |
|---|---|
| _em_helical_entity.hand | replaces |