XmlmmCIF equivalent: chem_link_angle Data items in the CHEM_LINK_ANGLE category record details about angles in a linkage between chemical groups. XmlmmCIF equivalent: chem_link_angle/atom_1_comp_id This data item indicates whether atom 1 is found in the first or the second of the two components connected by the linkage. XmlmmCIF equivalent: chem_link_angle/atom_2_comp_id This data item indicates whether atom 2 is found in the first or the second of the two components connected by the linkage. XmlmmCIF equivalent: chem_link_angle/atom_3_comp_id This data item indicates whether atom 3 is found in the first or the second of the two components connected by the linkage. XmlmmCIF equivalent: chem_link_angle/value_angle The value that should be taken as the target value for the angle associated with the specified atoms, expressed in degrees. XmlmmCIF equivalent: chem_link_angle/value_angle_esd The estimated standard deviation of _chem_link_angle.value_angle. XmlmmCIF equivalent: chem_link_angle/value_dist The value that should be taken as the target value for the angle associated with the specified atoms, expressed as the distance between the atoms specified by _chem_comp_angle.atom_id_1 and _chem_comp_angle.atom_id_3. XmlmmCIF equivalent: chem_link_angle/value_dist_esd The estimated standard deviation of _chem_comp_angle.value_dist_esd. XmlmmCIF equivalent: chem_link_angle/link_id This data item is a pointer to _chem_link.id in the CHEM_LINK category. XmlmmCIF equivalent: chem_link_angle/atom_id_1 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_1 (or _chem_comp_link.type_2, where the appropriate data item is indated by the value of _chem_comp_link.atom_1_comp_id). XmlmmCIF equivalent: chem_link_angle/atom_id_2 The id of the second of the three atoms that define the angle. The second atom is taken to be the apex of the angle. An atom with this id must exist in the component of the type specified by _chem_comp_link.type_1 (or _chem_comp_link.type_2, where the appropriate data item is indated by the value of _chem_comp_link.atom_2_comp_id). XmlmmCIF equivalent: chem_link_angle/atom_id_3 The id of the third 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_1 (or _chem_comp_link.type_2, where the appropriate data item is indated by the value of _chem_comp_link.atom_3_comp_id).