# 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 BTA BTA '4-DEMETHYL-LEUCINE ' non-polymer 19 8 M # data_comp_BTA # 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 BTA N N . 0.000 BTA CA C . 0.000 BTA CB C . 0.000 BTA CG C . 0.000 BTA CD C . 0.000 BTA C C . 0.000 BTA O O . 0.000 BTA OXT O . 0.000 BTA HA H . 0.000 BTA HN1 H . 0.000 BTA HN2 H . 0.000 BTA HB1 H . 0.000 BTA HB2 H . 0.000 BTA HG1 H . 0.000 BTA HG2 H . 0.000 BTA HD1 H . 0.000 BTA HD2 H . 0.000 BTA HD3 H . 0.000 BTA HXT H . 0.000 loop_ _chem_comp_bond.comp_id _chem_comp_bond.atom_id_1 _chem_comp_bond.atom_id_2 _chem_comp_bond.type BTA N CA single BTA N HN1 single BTA N HN2 single BTA CA HA single BTA CA CB single BTA CA C single BTA CB HB1 single BTA CB HB2 single BTA CB CG single BTA CG HG1 single BTA CG HG2 single BTA CG CD single BTA CD HD1 single BTA CD HD2 single BTA CD HD3 single BTA C O double BTA C OXT single BTA OXT HXT single