Data items in the pdbx_initial_refinement_model record the starting model(s) used in structure determination.
_pdbx_initial_refinement_model.id 1 _pdbx_initial_refinement_model.entity_id_list 1 _pdbx_initial_refinement_model.type 'experimental model' _pdbx_initial_refinement_model.source_name PDB _pdbx_initial_refinement_model.accession_code 3LTQ