Macromolecular dictionary (mmCIF) version 2.0.09
_geom_hbond.atom_site_label_atom_id_D
Name:'_geom_hbond.atom_site_label_atom_id_D'
Definition:
An optional identifier of the donor-atom site that defines the hydrogen bond. This data item is a pointer to _atom_site.label_atom_id in the ATOM_SITE category.
Mandatory item: no