Macromolecular dictionary (mmCIF) version 2.0.09
_geom_angle.atom_site_id_2
Name:'_geom_angle.atom_site_id_2'
Definition:
The identifier of the second of the three atom sites that define the angle. The second atom is taken to be the apex of the angle. This data item is a pointer to _atom_site.id in the ATOM_SITE category.
Mandatory item: yes
Alias:_geom_angle_atom_site_label_2 (cif_core.dic version 2.0.1)