_CA_CB_constraint.Atom_type_2
| Description | Standard symbol used to define the atom element type. |
| Details: | |
| Parent saveframe | CA_CB_chem_shift_constraints |
| Data type | code |
| DB table | CA_CB_constraint |
| DB column | Atom_type_2 |
| DB type | VARCHAR(15) |
| NULL allowed | no (mandatory) |