Data Item _pdbx_ligscreen_investigation_lib_component.parent_id
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General 
- Item name
- _pdbx_ligscreen_investigation_lib_component.parent_id
- Category name
- pdbx_ligscreen_investigation_lib_component
- Attribute name
- parent_id
- Required in PDB entries
- no
- Used in current PDB entries
- No
Item Description
This data item is enables there to be a precursor decsribed as well as the reacted chemical entity once it is covalently bound to the protein.
This data item has been designed to capture before and after chemical structures of fragments in fragment-based covalent ligand discovery investigation
Data Type 
- Data type code
- int
- Data type detail
- Signed integers
- Primitive data type code
- numb
- Regular expression
- [+-]?[0-9]+