Data Item _atom_site.pdbx_formal_charge
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General 
- Item name
- _atom_site.pdbx_formal_charge
- Category name
- atom_site
- Attribute name
- pdbx_formal_charge
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 6.8 % of entries
Item Description
The net integer charge assigned to this atom. This is the
formal charge assignment normally found in chemical diagrams.
Item Example1
1
Item Example2
-1
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]+
- Default value
- 0
Allowed Boundary Conditions
| Minimum Value | Maximum Value |
|---|---|
| -8 | 8 |