Data items in the CHEM_COMP_DESCRIPTOR category provide string descriptors of component chemical structure.
loop_ _pdbx_chem_comp_descriptor.comp_id _pdbx_chem_comp_descriptor.descriptor _pdbx_chem_comp_descriptor.type _pdbx_chem_comp_descriptor.program _pdbx_chem_comp_descriptor.program_version . . . . .