Data Item _entity_src_nat.pdbx_beg_seq_num
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General 
- Item name
- _entity_src_nat.pdbx_beg_seq_num
- Category name
- entity_src_nat
- Attribute name
- pdbx_beg_seq_num
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 2.8 % of entries
Item Description
The beginning polymer sequence position for the polymer section corresponding
to this source.
A reference to the sequence position in the entity_poly 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]+