Data Item _phasing_MIR_der_site.occupancy
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General 
- Item name
- _phasing_MIR_der_site.occupancy
- Category name
- phasing_MIR_der_site
- Attribute name
- occupancy
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 0.02 % of entries
Item Description
The fraction of the atom type present at this heavy-atom site
in a given derivative. The sum of the occupancies of all the
atom types at this site may not significantly exceed 1.0 unless
it is a dummy site.
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]+)?
- Default value
- 1.0
Allowed Boundary Conditions
| Minimum Value | Maximum Value |
|---|---|
| 0.0 | +∞ |