Data Item _pdbx_reference_entity_poly_link.entity_seq_num_1
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General 
- Item name
- _pdbx_reference_entity_poly_link.entity_seq_num_1
- Category name
- pdbx_reference_entity_poly_link
- Attribute name
- entity_seq_num_1
- Required in PDB entries
- no
- Used in currrent PDB entries
- No
- Used in the BIRD dictionary
- Yes
Item Description
For a polymer entity, the sequence number in the first of
the two components making the linkage.
This data item is a pointer to _pdbx_reference_entity_poly_seq.num
in the PDBX_REFERENCE_ENTITY_POLY_SEQ category.
Data Type 
- Data type code
- int
- Data type detail
- int item types are the subset of numbers that are the negative or positive integers.
- Primitive data type code
- numb
- Regular expression
- [+-]?[0-9]+
