Data Item _refine.ls_number_restraints
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General 
- Item name
- _refine.ls_number_restraints
- Category name
- refine
- Attribute name
- ls_number_restraints
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 1.8 % of entries
Item Description
The number of restrained parameters. These are parameters which
are not directly dependent on another refined parameter.
Restrained parameters often involve geometry or energy
dependencies.
See also _atom_site.constraints and _atom_site.refinement_flags.
A general description of refinement constraints may appear in
_refine.details.
Data Type 
- Data type code
- int
- Data type detail
- int item types are the subset of numbers that are the negative or positive integers.
- Primitive data type code
- numb
- Regular expression
- [+-]?[0-9]+
Allowed Boundary Conditions
| Minimum Value | Maximum Value |
|---|---|
| 0 | +∞ |
Aliases
| Alias Item Name | Dictionary Name | Dictionary Version |
|---|---|---|
| _refine_ls_number_restraints | cif_core.dic | 2.0.1 |