Data Item _pdbx_investigation_sample.nonpoly_descript_id
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General 
- Item name
- _pdbx_investigation_sample.nonpoly_descript_id
- Category name
- pdbx_investigation_sample
- Attribute name
- nonpoly_descript_id
- Required in PDB entries
- no
- Used in current PDB entries
- No
Item Description
This data item is a pointer to _pdbx_investigation_nonpoly_descript.id in the
PDBX_INVESTIGATION_NONPOLY_DESCRIPT category. This identifer will form a reference
to an aggregated list (n=>1) of small molecule sample components.
These "small molecules" are those which are not classes as polymers
or compounds (or those directly derived from) the fragment library.
If an experiment has an associated PDB entry - these non-polymers do
not have to be modelled. However they should be described as a sample
component.
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]+
