Macromolecular dictionary (mmCIF) version 2.0.09
_geom_angle.atom_site_auth_comp_id_1
Name:'_geom_angle.atom_site_auth_comp_id_1'
Definition:
An optional identifier of the first of the three atom sites that define the angle. This data item is a pointer to _atom_site.auth_comp_id in the ATOM_SITE category.
Mandatory item: no