Data Item _ndb_entity_poly_na_nonstandard.feature
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General 
- Item name
- _ndb_entity_poly_na_nonstandard.feature
- Category name
- ndb_entity_poly_na_nonstandard
- Attribute name
- feature
- Required in PDB entries
- yes
- Used in currrent PDB entries
- No
Item Description
This data item describes the nonstandard feature of
the nucleic acid polymer entity.
Data Type 
- Data type code
- line
- Data type detail
- char item types / multi-word items ...
- Primitive data type code
- char
- Regular expression
- [][ \t_(),.;:"&<>/\{}'`~!@#$%?+=*A-Za-z0-9|^-]*
Controlled Vocabulary
| Allowed Value | Details |
|---|---|
| 2'-5'-phosphodiester linkage | |
| base modification | |
| cyclic nucleotide | |
| phosphate modification | |
| sugar modification |
Controlled Vocabulary at Deposition
| Allowed Value | Details |
|---|---|
| 2'-5'-phosphodiester linkage | |
| base modification | |
| cyclic nucleotide | |
| phosphate modification | |
| sugar modification |