Data Item _pdbx_chem_comp_pcm.position
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General 
- Item name
- _pdbx_chem_comp_pcm.position
- Category name
- pdbx_chem_comp_pcm
- Attribute name
- position
- Required in PDB entries
- yes
- Used in current PDB entries
- No
Item Description
The position of the modification on the amino acid.
Item Example
Amino acid side chain
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 |
|---|---|
| Amino-acid backbone | Protein modification occurs on the amino acid backbone |
| Amino-acid side chain | Protein modification occurs on the amino acid side chain |
| Amino-acid side chain and backbone | Protein modification occurs on both the amino acid side chain and backbone |
Controlled Vocabulary at Deposition
| Allowed Value | Details |
|---|---|
| Amino-acid backbone | Protein modification occurs on the amino acid backbone |
| Amino-acid side chain | Protein modification occurs on the amino acid side chain |
| Amino-acid side chain and backbone | Protein modification occurs on both the amino acid side chain and backbone |