# 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 CH2 . 'Methylene ' non-polymer 3 1 . # data_comp_CH2 # 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 CH2 CH2 C CH2 0.000 CH2 HH21 H HCH2 0.000 CH2 HH22 H HCH2 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 CH2 CH2 n/a . END CH2 HH21 CH2 . . CH2 HH22 CH2 . . 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 CH2 HH21 CH2 coval 0.980 0.020 CH2 HH22 CH2 coval 0.980 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 CH2 HH21 CH2 HH22 107.900 3.000