Data Item _chem_link_angle.atom_id_1
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General 
- Item name
- _chem_link_angle.atom_id_1
- Category name
- chem_link_angle
- Attribute name
- atom_id_1
- Required in PDB entries
- yes
- Used in current PDB entries
- No
Item Description
The ID of the first of the three atoms that define the angle.
An atom with this ID must exist in the component of the type
specified by _chem_comp_link.type_comp_1 (or
_chem_comp_link.type_comp_2, where the appropriate data item
is indicated by the value of _chem_comp_angle.atom_1_comp_id).
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*|+-]*
