Data Item _chem_comp.type
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General 
- Item name
- _chem_comp.type
- Category name
- chem_comp
- Attribute name
- type
- Required in PDB entries
- yes
- Used in current PDB entries
- Yes, in about 100.0 % of entries
- Used in the Chemical Component dictionary
- Yes
Item Description
For standard polymer components, the type of the monomer.
Note that monomers that will form polymers are of three types:
linking monomers, monomers with some type of N-terminal (or 5')
cap and monomers with some type of C-terminal (or 3') cap.
Data Type 
- Data type code
- uline
- Data type detail
- char item types / multi-word items (case insensitive)...
- Primitive data type code
- uchar
- Regular expression
- [][ \t_(),.;:"&<>/\{}'`~!@#$%?+=*A-Za-z0-9|^-]*
Controlled Vocabulary
| Allowed Value | Details |
|---|---|
| D-beta-peptide, C-gamma linking | Iso-peptide linking D-beta peptide |
| D-gamma-peptide, C-delta linking | Iso-peptide linking D-gamma peptide |
| D-peptide COOH carboxy terminus | |
| D-peptide NH3 amino terminus | |
| D-peptide linking | |
| D-saccharide | |
| D-saccharide, alpha linking | |
| D-saccharide, beta linking | |
| DNA OH 3 prime terminus | |
| DNA OH 5 prime terminus | |
| DNA linking | |
| L-DNA linking | |
| L-RNA linking | |
| L-beta-peptide, C-gamma linking | Iso-peptide linking L-beta peptide |
| L-gamma-peptide, C-delta linking | Iso-peptide linking L-gamma peptide |
| L-peptide COOH carboxy terminus | |
| L-peptide NH3 amino terminus | |
| L-peptide linking | |
| L-saccharide | |
| L-saccharide, alpha linking | |
| L-saccharide, beta linking | |
| RNA OH 3 prime terminus | |
| RNA OH 5 prime terminus | |
| RNA linking | |
| non-polymer | |
| other | |
| peptide linking | |
| peptide-like | |
| saccharide |
Controlled Vocabulary at Deposition
| Allowed Value | Details |
|---|---|
| D-beta-peptide, C-gamma linking | Iso-peptide linking D-beta peptide |
| D-gamma-peptide, C-delta linking | Iso-peptide linking D-gamma peptide |
| D-peptide COOH carboxy terminus | |
| D-peptide NH3 amino terminus | |
| D-peptide linking | |
| D-saccharide | |
| D-saccharide, alpha linking | |
| D-saccharide, beta linking | |
| DNA OH 3 prime terminus | |
| DNA OH 5 prime terminus | |
| DNA linking | |
| L-DNA linking | |
| L-RNA linking | |
| L-beta-peptide, C-gamma linking | Iso-peptide linking L-beta peptide |
| L-gamma-peptide, C-delta linking | Iso-peptide linking L-gamma peptide |
| L-peptide COOH carboxy terminus | |
| L-peptide NH3 amino terminus | |
| L-peptide linking | |
| L-saccharide | |
| L-saccharide, alpha linking | |
| L-saccharide, beta linking | |
| RNA OH 3 prime terminus | |
| RNA OH 5 prime terminus | |
| RNA linking | |
| non-polymer | |
| other | |
| peptide linking | |
| peptide-like | |
| saccharide |
