Data Item _pdbx_entity_src_gen_chrom.step_id
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General 
- Item name
- _pdbx_entity_src_gen_chrom.step_id
- Category name
- pdbx_entity_src_gen_chrom
- Attribute name
- step_id
- Required in PDB entries
- yes
- Used in currrent PDB entries
- No
Item Description
This item is the unique identifier for this chromatography step.
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]+