Data Item _ma_qa_metric_dihedral.atom_id_4
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General 
- Item name
- _ma_qa_metric_dihedral.atom_id_4
- Category name
- ma_qa_metric_dihedral
- Attribute name
- atom_id_4
- Required in PDB entries
- yes
- Used in current PDB entries
- No
Item Description
The identifier for one of the four atoms that define the dihedral angle.
This one is the outer atom connected to atom_id_3.
This data item is a pointer to _atom_site.id in the ATOM_SITE category.
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*|+-]*
