Data Item _pdbx_reference_entity_link.comp_id_1
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General 
- Item name
- _pdbx_reference_entity_link.comp_id_1
- Category name
- pdbx_reference_entity_link
- Attribute name
- comp_id_1
- Required in PDB entries
- yes
- Used in current PDB entries
- No
- Used in the BIRD dictionary
- Yes
Item Description
The component identifier in the first of the two entities containing the linkage.
For polymer entities, this data item is a pointer to _pdbx_reference_entity_poly_seq.mon_id
in the PDBX_REFERENCE_ENTITY_POLY_SEQ category.
For non-polymer entities, this data item is a pointer to
_pdbx_reference_entity_nonpoly.three-letter-code in the
PDBX_REFERENCE_ENTITY_NONPOLY category.
Data Type 
- Data type code
- code
- Data type detail
- code item types/single words ...
- Primitive data type code
- char
- Regular expression
- [_,.;:"&<>()/\{}'`~!@#$%A-Za-z0-9*|+-]*