Data items in the CHEM_COMP_ATOM category record details about the atoms in a chemical component. Specifying the atomic coordinates for the components in this category is an alternative to specifying the structure of the component via bonds, angles, planes etc. in the appropriate CHEM_COMP subcategories.
loop_ _chem_comp_atom.comp_id _chem_comp_atom.atom_id _chem_comp_atom.type_symbol _chem_comp_atom.substruct_code _chem_comp_atom.model_Cartn_x _chem_comp_atom.model_Cartn_y _chem_comp_atom.model_Cartn_z phe N N main 1.20134 0.84658 0.00000 phe CA C main 0.00000 0.00000 0.00000 phe C C main -1.25029 0.88107 0.00000 phe O O main -2.18525 0.66029 -0.78409 phe CB C side 0.00662 -1.03603 1.11081 phe CG C side 0.03254 -0.49711 2.50951 phe CD1 C side -1.15813 -0.12084 3.13467 phe CE1 C side -1.15720 0.38038 4.42732 phe CZ C side 0.05385 0.51332 5.11032 phe CE2 C side 1.26137 0.11613 4.50975 phe CD2 C side 1.23668 -0.38351 3.20288 val N N main 1.20134 0.84658 0.00000 val CA C main 0.00000 0.00000 0.00000 val C C main -1.25029 0.88107 0.00000 val O O main -2.18525 0.66029 -0.78409 val CB C side 0.05260 -0.99339 1.17429 val CG1 C side -0.13288 -0.31545 2.52668 val CG2 C side -0.94265 -2.12930 0.99811