Tokens in this section are looped through for each atom in the chemical component
| Token | Definition | Example |
|---|---|---|
| _chem_comp_atom.comp_id | Same as _chem_comp.id | HYP |
| _chem_comp_atom.atom_id | Identifier for each atom in the chemical component - new format | CA |
| _chem_comp_atom.alt_atom_id | Previous format of identifier for each atom in the chemical component. | CA |
| _chem_comp_atom.type_symbol | The element type for each atom in the chemical component. | C O N, etc. |
| _chem_comp_atom.charge | The formal charge assigned to each atom in the chemical component. | 0 |
| _chem_comp_atom.pdbx_align | Determines which column the atom name appears within the PDB coordinate files. The possible values are 0 or 1. | 0 or 1 |
| _chem_comp_atom.pdbx_aromatic_flag | Defines atoms in an aromatic moiety. | Y or N |
| _chem_comp_atom.pdbx_leaving_atom_flag | Flags atoms with "leaving" capability. | Y or N |
| _chem_comp_atom.pdbx_stereo_config | Defines the stereochemical configuration of the chiral center atom. | R or S or N |
| _chem_comp_atom.model_Cartn_x | The x component of the coordinates for each atom specified as orthogonal angstroms. | 26.056 |
| _chem_comp_atom.model_Cartn_y | The y component of the coordinates for each atom specified as orthogonal angstroms. | 5.609 |
| _chem_comp_atom.model_Cartn_z | The z component of the coordinates for each atom specified as orthogonal angstroms. | 5.594 |
| _chem_comp_atom.pdbx_model_Cartn_x_ideal | Computed idealized coordinates, x component of the vector (in Angstroms) | number |
| _chem_comp_atom.pdbx_model_Cartn_y_ideal | Computed idealized coordinates, y component of the vector (in Angstroms) | number |
| _chem_comp_atom.pdbx_model_Cartn_z_ideal | Computed idealized coordinates, z component of the vector (in Angstroms) | number |
| _chem_comp_atom.pdbx_ordinal | Ordinal index for the chemical component atom list. | 1 (integer) |