Data Item _pdbx_unobs_or_zero_occ_atoms.occupancy_flag
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General 
- Item name
- _pdbx_unobs_or_zero_occ_atoms.occupancy_flag
- Category name
- pdbx_unobs_or_zero_occ_atoms
- Attribute name
- occupancy_flag
- Required in PDB entries
- yes
- Used in current PDB entries
- Yes, in about 41.9 % of entries
Item Description
The value of occupancy flag indicates whether the atom is
either unobserved (=1) or has zero occupancy (=0)
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]+
Controlled Vocabulary
| Allowed Value | Details |
|---|---|
| 0 | |
| 1 |
Controlled Vocabulary at Deposition
| Allowed Value | Details |
|---|---|
| 0 | |
| 1 |