Data Item _pdbx_unobs_or_zero_occ_residues.polymer_flag
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General 
- Item name
- _pdbx_unobs_or_zero_occ_residues.polymer_flag
- Category name
- pdbx_unobs_or_zero_occ_residues
- Attribute name
- polymer_flag
- Required in PDB entries
- yes
- Used in current PDB entries
- Yes, in about 70.4 % of entries
Item Description
The value of polymer flag indicates whether the unobserved or
zero occupancy residue is part of a polymer chain or not
Data Type 
- Data type code
- ucode
- Data type detail
- code item types/single words (case insensitive) ...
- Primitive data type code
- uchar
- Regular expression
- [][_,.;:"&<>()/\{}'`~!@#$%A-Za-z0-9*|+-]*
Controlled Vocabulary
| Allowed Value | Details |
|---|---|
| N | |
| Y |
Controlled Vocabulary at Deposition
| Allowed Value | Details |
|---|---|
| N | |
| Y |