Data Item _em_2d_crystal_entity.id
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General 
- Item name
- _em_2d_crystal_entity.id
- Category name
- em_2d_crystal_entity
- Attribute name
- id
- Required in PDB entries
- yes
- Used in current PDB entries
- Yes, in about 0.007 % of entries
Item Description
The value of _em_2d_crystal_entity.id must uniquely identify
a set of the crystal parameters for this assembly component.
Data Type 
- Data type code
- code
- Data type detail
- code item types/single words ...
- Primitive data type code
- char
- Regular expression
- [_,.;:"&<>()/\{}'`~!@#$%A-Za-z0-9*|+-]*