Data Item _pdbx_reference_entity_poly_link.atom_id_1
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General 
- Item name
- _pdbx_reference_entity_poly_link.atom_id_1
- Category name
- pdbx_reference_entity_poly_link
- Attribute name
- atom_id_1
- Required in PDB entries
- yes
- Used in currrent PDB entries
- No
- Used in the BIRD dictionary
- Yes
Item Description
The atom identifier/name in the first of the two components making
the linkage.
Data Type 
- Data type code
- atcode
- Data type detail
- Character data type for atom names ...
- Primitive data type code
- char
- Regular expression
- [][ _(),.;:"&<>/\{}'`~!@#$%?+=*A-Za-z0-9|^-]*