# data_comp_list loop_ _chem_comp.id _chem_comp.three_letter_code _chem_comp.name _chem_comp.group _chem_comp.number_atoms_all _chem_comp.number_atoms_nh _chem_comp.desc_level SO3 . 'SULFITE ION ' non-polymer 4 4 . # data_comp_SO3 # loop_ _chem_comp_atom.comp_id _chem_comp_atom.atom_id _chem_comp_atom.type_symbol _chem_comp_atom.type_energy _chem_comp_atom.partial_charge SO3 O3 O OS 0.000 SO3 S S S 0.000 SO3 O1 O OS 0.000 SO3 O2 O OS 0.000 loop_ _chem_comp_tree.comp_id _chem_comp_tree.atom_id _chem_comp_tree.atom_back _chem_comp_tree.atom_forward _chem_comp_tree.connect_type SO3 O3 n/a S START SO3 S O3 O2 . SO3 O1 S . . SO3 O2 S . END loop_ _chem_comp_bond.comp_id _chem_comp_bond.atom_id_1 _chem_comp_bond.atom_id_2 _chem_comp_bond.type _chem_comp_bond.value_dist _chem_comp_bond.value_dist_esd SO3 S O3 coval 1.460 0.020 SO3 O1 S coval 1.460 0.020 SO3 O2 S coval 1.460 0.020 loop_ _chem_comp_angle.comp_id _chem_comp_angle.atom_id_1 _chem_comp_angle.atom_id_2 _chem_comp_angle.atom_id_3 _chem_comp_angle.value_angle _chem_comp_angle.value_angle_esd SO3 O3 S O1 109.470 3.000 SO3 O3 S O2 109.470 3.000 SO3 O1 S O2 109.470 3.000