Data Item _geom_hbond.dist_HA
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General 
- Item name
- _geom_hbond.dist_HA
- Category name
- geom_hbond
- Attribute name
- dist_HA
- Required in PDB entries
- no
- Used in currrent PDB entries
- No
Item Description
The distance in angstroms between the hydrogen- and acceptor-
atom sites in a hydrogen bond.
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
- angstroms
Allowed Boundary Conditions
| Minimum Value | Maximum Value |
|---|---|
| 0.0 | +∞ |
Related Items 
| Related Item Name | Relation Type |
|---|---|
| _geom_hbond.dist_HA_esd | associated_esd |
Aliases
| Alias Item Name | Dictionary Name | Dictionary Version |
|---|---|---|
| _geom_hbond_distance_HA | cif_core.dic | 2.0.1 |