data_7P61 # _model_server_result.job_id rxxgX1eYmZHh4FaHfkg6bg _model_server_result.datetime_utc '2025-07-08 07:41:50' _model_server_result.server_version 0.9.12 _model_server_result.query_name ligand _model_server_result.source_id pdb-bcif _model_server_result.entry_id 7p61 # _model_server_params.name atom_site _model_server_params.value '{"label_asym_id":"BA","auth_seq_id":401}' # _entry.id 7P61 # _exptl.entry_id 7P61 _exptl.method 'ELECTRON MICROSCOPY' # _entity.details ? _entity.formula_weight 727.109 _entity.id 20 _entity.src_method syn _entity.type non-polymer _entity.pdbx_description Ubiquinone-8 _entity.pdbx_number_of_molecules 1 _entity.pdbx_parent_entity_id . _entity.pdbx_mutation ? _entity.pdbx_fragment ? _entity.pdbx_ec ? # _cell.angle_alpha 90 _cell.angle_beta 90 _cell.angle_gamma 90 _cell.entry_id 7P61 _cell.length_a 1 _cell.length_b 1 _cell.length_c 1 _cell.Z_PDB ? _cell.pdbx_unique_axis ? # _symmetry.entry_id 7P61 _symmetry.cell_setting ? _symmetry.Int_Tables_number 1 _symmetry.space_group_name_Hall ? _symmetry.space_group_name_H-M 'P 1' # _pdbx_struct_assembly.method_details ? _pdbx_struct_assembly.oligomeric_details tridecameric _pdbx_struct_assembly.oligomeric_count 13 _pdbx_struct_assembly.details author_defined_assembly _pdbx_struct_assembly.id 1 # _pdbx_struct_assembly_gen.asym_id_list A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,AA,BA _pdbx_struct_assembly_gen.assembly_id 1 _pdbx_struct_assembly_gen.oper_expression 1 # _pdbx_struct_oper_list.id 1 _pdbx_struct_oper_list.type 'identity operation' _pdbx_struct_oper_list.name 1_555 _pdbx_struct_oper_list.symmetry_operation ? _pdbx_struct_oper_list.matrix[1][1] 1 _pdbx_struct_oper_list.matrix[1][2] 0 _pdbx_struct_oper_list.matrix[1][3] 0 _pdbx_struct_oper_list.matrix[2][1] 0 _pdbx_struct_oper_list.matrix[2][2] 1 _pdbx_struct_oper_list.matrix[2][3] 0 _pdbx_struct_oper_list.matrix[3][1] 0 _pdbx_struct_oper_list.matrix[3][2] 0 _pdbx_struct_oper_list.matrix[3][3] 1 _pdbx_struct_oper_list.vector[1] 0 _pdbx_struct_oper_list.vector[2] 0 _pdbx_struct_oper_list.vector[3] 0 # _struct_asym.details ? _struct_asym.entity_id 20 _struct_asym.id BA _struct_asym.pdbx_modified N _struct_asym.pdbx_blank_PDB_chainid_flag N # loop_ _struct_conn.conn_type_id _struct_conn.details _struct_conn.id _struct_conn.ptnr1_label_asym_id _struct_conn.ptnr1_label_atom_id _struct_conn.ptnr1_label_comp_id _struct_conn.ptnr1_label_seq_id _struct_conn.ptnr1_auth_asym_id _struct_conn.ptnr1_auth_comp_id _struct_conn.ptnr1_auth_seq_id _struct_conn.ptnr1_symmetry _struct_conn.ptnr2_label_asym_id _struct_conn.ptnr2_label_atom_id _struct_conn.ptnr2_label_comp_id _struct_conn.ptnr2_label_seq_id _struct_conn.ptnr2_auth_asym_id _struct_conn.ptnr2_auth_comp_id _struct_conn.ptnr2_auth_seq_id _struct_conn.ptnr2_symmetry _struct_conn.pdbx_ptnr1_PDB_ins_code _struct_conn.pdbx_ptnr1_label_alt_id _struct_conn.pdbx_ptnr1_standard_comp_id _struct_conn.pdbx_ptnr2_PDB_ins_code _struct_conn.pdbx_ptnr2_label_alt_id _struct_conn.pdbx_ptnr3_PDB_ins_code _struct_conn.pdbx_ptnr3_label_alt_id _struct_conn.pdbx_ptnr3_label_asym_id _struct_conn.pdbx_ptnr3_label_atom_id _struct_conn.pdbx_ptnr3_label_comp_id _struct_conn.pdbx_ptnr3_label_seq_id _struct_conn.pdbx_PDB_id _struct_conn.pdbx_dist_value _struct_conn.pdbx_value_order metalc ? metalc1 A SG CYS 351 F CYS 351 1_555 N FE4 SF4 . F SF4 501 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.33 ? metalc ? metalc2 A SG CYS 354 F CYS 354 1_555 N FE1 SF4 . F SF4 501 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.328 ? metalc ? metalc3 A SG CYS 357 F CYS 357 1_555 N FE2 SF4 . F SF4 501 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.323 ? metalc ? metalc4 A SG CYS 398 F CYS 398 1_555 N FE3 SF4 . F SF4 501 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.331 ? metalc ? metalc5 B SG CYS 82 E CYS 92 1_555 Q FE1 FES . E FES 201 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.329 ? metalc ? metalc6 B SG CYS 87 E CYS 97 1_555 Q FE1 FES . E FES 201 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.328 ? metalc ? metalc7 B SG CYS 127 E CYS 137 1_555 Q FE2 FES . E FES 201 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.327 ? metalc ? metalc8 C SG CYS 33 G CYS 36 1_555 U FE1 FES . G FES 1004 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.329 ? metalc ? metalc9 C SG CYS 44 G CYS 47 1_555 U FE1 FES . G FES 1004 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.327 ? metalc ? metalc10 C SG CYS 47 G CYS 50 1_555 U FE2 FES . G FES 1004 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.326 ? metalc ? metalc11 C SG CYS 66 G CYS 69 1_555 U FE2 FES . G FES 1004 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.327 ? metalc ? metalc12 C NE2 HIS 98 G HIS 101 1_555 R FE3 SF4 . G SF4 1001 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.079 ? metalc ? metalc13 C SG CYS 102 G CYS 105 1_555 R FE2 SF4 . G SF4 1001 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.329 ? metalc ? metalc14 C SG CYS 105 G CYS 108 1_555 R FE4 SF4 . G SF4 1001 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.323 ? metalc ? metalc15 C SG CYS 111 G CYS 114 1_555 R FE1 SF4 . G SF4 1001 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.331 ? metalc ? metalc16 C SG CYS 150 G CYS 153 1_555 S FE2 SF4 . G SF4 1002 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.328 ? metalc ? metalc17 C SG CYS 156 G CYS 159 1_555 S FE3 SF4 . G SF4 1002 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.318 ? metalc ? metalc18 C SG CYS 200 G CYS 203 1_555 S FE4 SF4 . G SF4 1002 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.329 ? metalc ? metalc19 C SG CYS 227 G CYS 230 1_555 T FE1 SF4 . G SF4 1003 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.325 ? metalc ? metalc20 C SG CYS 230 G CYS 233 1_555 T FE4 SF4 . G SF4 1003 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.325 ? metalc ? metalc21 C SG CYS 234 G CYS 237 1_555 T FE3 SF4 . G SF4 1003 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.324 ? metalc ? metalc22 C SG CYS 262 G CYS 265 1_555 T FE2 SF4 . G SF4 1003 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.326 ? metalc ? metalc23 C OD2 ASP 616 G ASP 619 1_555 V CA CA . G CA 1005 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.566 ? metalc ? metalc24 C OE1 GLN 631 G GLN 634 1_555 V CA CA . G CA 1005 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.568 ? metalc ? metalc25 C OE2 GLU 646 G GLU 649 1_555 V CA CA . G CA 1005 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.57 ? metalc ? metalc26 C OD2 ASP 730 G ASP 733 1_555 V CA CA . G CA 1005 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.566 ? metalc ? metalc27 E SG CYS 63 B CYS 63 1_555 W FE3 SF4 . B SF4 301 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.316 ? metalc ? metalc28 E SG CYS 64 B CYS 64 1_555 W FE2 SF4 . B SF4 301 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.331 ? metalc ? metalc29 E SG CYS 129 B CYS 129 1_555 W FE1 SF4 . B SF4 301 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.326 ? metalc ? metalc30 E SG CYS 158 B CYS 158 1_555 W FE4 SF4 . B SF4 301 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.326 ? metalc ? metalc31 F SG CYS 27 I CYS 60 1_555 Y FE3 SF4 . I SF4 202 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.329 ? metalc ? metalc32 F SG CYS 30 I CYS 63 1_555 Y FE4 SF4 . I SF4 202 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.33 ? metalc ? metalc33 F SG CYS 33 I CYS 66 1_555 Y FE2 SF4 . I SF4 202 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.324 ? metalc ? metalc34 F SG CYS 37 I CYS 70 1_555 X FE4 SF4 . I SF4 201 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.328 ? metalc ? metalc35 F SG CYS 66 I CYS 99 1_555 X FE2 SF4 . I SF4 201 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.328 ? metalc ? metalc36 F SG CYS 72 I CYS 105 1_555 X FE3 SF4 . I SF4 201 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.323 ? metalc ? metalc37 F SG CYS 76 I CYS 109 1_555 Y FE1 SF4 . I SF4 202 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.332 ? # _chem_comp.formula 'C49 H74 O4' _chem_comp.formula_weight 727.109 _chem_comp.id UQ8 _chem_comp.mon_nstd_flag . _chem_comp.name Ubiquinone-8 _chem_comp.type non-polymer _chem_comp.pdbx_synonyms '2,3-dimethoxy-5-methyl-6-[(6E,10E,14E,18E,22E,26E)-3,7,11,15,19,23,27,31-octamethyldotriaconta-2,6,10,14,18,22,26,30-oc taen-1-yl]cyclohexa-2,5-diene-1,4-dione' # loop_ _chem_comp_bond.atom_id_1 _chem_comp_bond.atom_id_2 _chem_comp_bond.comp_id _chem_comp_bond.value_order _chem_comp_bond.pdbx_ordinal _chem_comp_bond.pdbx_stereo_config _chem_comp_bond.pdbx_aromatic_flag C45 C44 UQ8 sing 635 n n C45 H45 UQ8 sing 636 n n C45 H45A UQ8 sing 637 n n C45 H45B UQ8 sing 638 n n C43 C44 UQ8 doub 639 n n C44 C46 UQ8 sing 640 n n C46 H46 UQ8 sing 641 n n C46 H46A UQ8 sing 642 n n C46 H46B UQ8 sing 643 n n C42 C43 UQ8 sing 644 n n C43 H43 UQ8 sing 645 n n C41 C42 UQ8 sing 646 n n C42 H42 UQ8 sing 647 n n C42 H42A UQ8 sing 648 n n C39 C41 UQ8 sing 649 n n C41 H41 UQ8 sing 650 n n C41 H41A UQ8 sing 651 n n C40 C39 UQ8 sing 652 n n C38 C39 UQ8 doub 653 n n C40 H40 UQ8 sing 654 n n C40 H40A UQ8 sing 655 n n C40 H40B UQ8 sing 656 e n C37 C38 UQ8 sing 657 n n C38 H38 UQ8 sing 658 n n C37 C36 UQ8 sing 659 n n C37 H37 UQ8 sing 660 n n C37 H37A UQ8 sing 661 n n C34 C36 UQ8 sing 662 n n C36 H36 UQ8 sing 663 n n C36 H36A UQ8 sing 664 n n C33 C34 UQ8 doub 665 n n C34 C35 UQ8 sing 666 n n C35 H35 UQ8 sing 667 n n C35 H35A UQ8 sing 668 n n C32 C33 UQ8 sing 669 e n C33 H33 UQ8 sing 670 n n C35 H35B UQ8 sing 671 n n C31 C32 UQ8 sing 672 n n C32 H32 UQ8 sing 673 n n C32 H32A UQ8 sing 674 n n C29 C31 UQ8 sing 675 n n C31 H31 UQ8 sing 676 n n C31 H31A UQ8 sing 677 n n C28 C29 UQ8 doub 678 n n C30 C29 UQ8 sing 679 n n C30 H30 UQ8 sing 680 n n C30 H30A UQ8 sing 681 n n C30 H30B UQ8 sing 682 e n C27 C28 UQ8 sing 683 n n C28 H28 UQ8 sing 684 n n C26 C27 UQ8 sing 685 n n C27 H27 UQ8 sing 686 n n C27 H27A UQ8 sing 687 n n C24 C26 UQ8 sing 688 n n C26 H26 UQ8 sing 689 n n C26 H26A UQ8 sing 690 n n C23 C24 UQ8 doub 691 n n C24 C25 UQ8 sing 692 n n C25 H25 UQ8 sing 693 n n C25 H25A UQ8 sing 694 n n C25 H25B UQ8 sing 695 e n C22 C23 UQ8 sing 696 n n C23 H23 UQ8 sing 697 n n C21 C22 UQ8 sing 698 n n C22 H22 UQ8 sing 699 n n C22 H22A UQ8 sing 700 n n C19 C21 UQ8 sing 701 n n C21 H21 UQ8 sing 702 n n C21 H21A UQ8 sing 703 n n C20 C19 UQ8 sing 704 n n C18 C19 UQ8 doub 705 n n C20 H20 UQ8 sing 706 n n C20 H20A UQ8 sing 707 n n C20 H20B UQ8 sing 708 e n C17 C18 UQ8 sing 709 n n C18 H18 UQ8 sing 710 n n C16 C17 UQ8 sing 711 n n C17 H17 UQ8 sing 712 n n C17 H17A UQ8 sing 713 n n C14 C16 UQ8 sing 714 n n C16 H16 UQ8 sing 715 n n C16 H16A UQ8 sing 716 n n C13 C14 UQ8 doub 717 n n C15 C14 UQ8 sing 718 n n C15 H15 UQ8 sing 719 n n C15 H15A UQ8 sing 720 n n C15 H15B UQ8 sing 721 e n C12 C13 UQ8 sing 722 n n C13 H13 UQ8 sing 723 n n C11 C12 UQ8 sing 724 n n C12 H12 UQ8 sing 725 n n C12 H12A UQ8 sing 726 n n C9 C11 UQ8 sing 727 n n C11 H11 UQ8 sing 728 n n C11 H11A UQ8 sing 729 n n C8 C9 UQ8 doub 730 n n C10 C9 UQ8 sing 731 n n C10 H10 UQ8 sing 732 n n C10 H10A UQ8 sing 733 n n C10 H10B UQ8 sing 734 e n C7 C8 UQ8 sing 735 n n C8 H8 UQ8 sing 736 n n C6 C7 UQ8 sing 737 n n C7 H7 UQ8 sing 738 n n C7 H7A UQ8 sing 739 n n C1 C6 UQ8 doub 740 n n C5 C6 UQ8 sing 741 n n C2 C1 UQ8 sing 742 n n C1 C1M UQ8 sing 743 n n C1M H1M UQ8 sing 744 n n C1M H1MA UQ8 sing 745 n n C1M H1MB UQ8 sing 746 n n O2 C2 UQ8 doub 747 n n C3 C2 UQ8 sing 748 n n O3 C3 UQ8 sing 749 n n C3 C4 UQ8 doub 750 n n C3M O3 UQ8 sing 751 n n C3M H3M UQ8 sing 752 n n C3M H3MA UQ8 sing 753 n n C3M H3MB UQ8 sing 754 n n O4 C4 UQ8 sing 755 n n C4 C5 UQ8 sing 756 n n C4M O4 UQ8 sing 757 n n C4M H4M UQ8 sing 758 n n C4M H4MA UQ8 sing 759 n n C4M H4MB UQ8 sing 760 n n C5 O5 UQ8 doub 761 n n # _atom_sites.entry_id 7P61 _atom_sites.fract_transf_matrix[1][1] 1 _atom_sites.fract_transf_matrix[1][2] 0 _atom_sites.fract_transf_matrix[1][3] 0 _atom_sites.fract_transf_matrix[2][1] 0 _atom_sites.fract_transf_matrix[2][2] 1 _atom_sites.fract_transf_matrix[2][3] 0 _atom_sites.fract_transf_matrix[3][1] 0 _atom_sites.fract_transf_matrix[3][2] 0 _atom_sites.fract_transf_matrix[3][3] 1 _atom_sites.fract_transf_vector[1] 0 _atom_sites.fract_transf_vector[2] 0 _atom_sites.fract_transf_vector[3] 0 # loop_ _pdbx_nonpoly_scheme.asym_id _pdbx_nonpoly_scheme.entity_id _pdbx_nonpoly_scheme.mon_id _pdbx_nonpoly_scheme.pdb_strand_id _pdbx_nonpoly_scheme.ndb_seq_num _pdbx_nonpoly_scheme.pdb_seq_num _pdbx_nonpoly_scheme.auth_seq_num _pdbx_nonpoly_scheme.pdb_mon_id _pdbx_nonpoly_scheme.auth_mon_id _pdbx_nonpoly_scheme.pdb_ins_code N 14 SF4 F 1 501 501 SF4 SF4 . O 15 FMN F 1 502 502 FMN FMN . P 16 NAI F 1 503 503 NAI NAI . Q 17 FES E 1 201 201 FES FES . R 14 SF4 G 1 1001 910 SF4 SF4 . S 14 SF4 G 1 1002 911 SF4 SF4 . T 14 SF4 G 1 1003 912 SF4 SF4 . U 17 FES G 1 1004 913 FES FES . V 18 CA G 1 1005 914 CA CA . W 14 SF4 B 1 301 231 SF4 SF4 . X 14 SF4 I 1 201 202 SF4 SF4 . Y 14 SF4 I 1 202 201 SF4 SF4 . Z 19 3PE L 1 801 801 3PE 3PE . AA 19 3PE L 1 802 1001 3PE 3PE . BA 20 UQ8 H 1 401 401 UQ8 UQ8 . # loop_ _atom_site.group_PDB _atom_site.id _atom_site.type_symbol _atom_site.label_atom_id _atom_site.label_comp_id _atom_site.label_seq_id _atom_site.label_alt_id _atom_site.pdbx_PDB_ins_code _atom_site.label_asym_id _atom_site.label_entity_id _atom_site.Cartn_x _atom_site.Cartn_y _atom_site.Cartn_z _atom_site.occupancy _atom_site.B_iso_or_equiv _atom_site.pdbx_formal_charge _atom_site.auth_atom_id _atom_site.auth_comp_id _atom_site.auth_seq_id _atom_site.auth_asym_id _atom_site.pdbx_PDB_model_num HETATM 1 C C17 UQ8 . . . BA 20 113.195 112.15 132.762 1 148.39 ? C17 UQ8 401 H 1 HETATM 2 C C16 UQ8 . . . BA 20 111.887 111.506 132.27 1 148.17 ? C16 UQ8 401 H 1 HETATM 3 C C14 UQ8 . . . BA 20 110.95 111.225 133.42 1 152.16 ? C14 UQ8 401 H 1 HETATM 4 C C15 UQ8 . . . BA 20 111.264 109.989 134.212 1 157.22 ? C15 UQ8 401 H 1 HETATM 5 C C13 UQ8 . . . BA 20 109.929 112.028 133.689 1 147.83 ? C13 UQ8 401 H 1 HETATM 6 C C12 UQ8 . . . BA 20 108.922 111.9 134.796 1 134.99 ? C12 UQ8 401 H 1 HETATM 7 C C11 UQ8 . . . BA 20 107.701 111.048 134.4 1 129.3 ? C11 UQ8 401 H 1 HETATM 8 C C9 UQ8 . . . BA 20 106.45 111.546 135.082 1 143.6 ? C9 UQ8 401 H 1 HETATM 9 C C10 UQ8 . . . BA 20 105.361 112.012 134.16 1 182.18 ? C10 UQ8 401 H 1 HETATM 10 C C8 UQ8 . . . BA 20 106.343 111.54 136.405 1 132.45 ? C8 UQ8 401 H 1 HETATM 11 C C7 UQ8 . . . BA 20 105.176 112.042 137.212 1 121.28 ? C7 UQ8 401 H 1 HETATM 12 C C6 UQ8 . . . BA 20 104.108 111.117 137.745 1 124.17 ? C6 UQ8 401 H 1 HETATM 13 C C1 UQ8 . . . BA 20 104.287 110.294 138.819 1 132.78 ? C1 UQ8 401 H 1 HETATM 14 C C1M UQ8 . . . BA 20 105.56 110.2 139.606 1 127.34 ? C1M UQ8 401 H 1 HETATM 15 C C2 UQ8 . . . BA 20 103.178 109.426 139.271 1 136.86 ? C2 UQ8 401 H 1 HETATM 16 O O2 UQ8 . . . BA 20 103.345 108.636 140.197 1 133.45 ? O2 UQ8 401 H 1 HETATM 17 C C3 UQ8 . . . BA 20 101.869 109.522 138.599 1 134.18 ? C3 UQ8 401 H 1 HETATM 18 O O3 UQ8 . . . BA 20 100.861 108.816 139.188 1 131.45 ? O3 UQ8 401 H 1 HETATM 19 C C3M UQ8 . . . BA 20 100.313 107.661 138.51 1 134.71 ? C3M UQ8 401 H 1 HETATM 20 C C4 UQ8 . . . BA 20 101.707 110.319 137.526 1 129.47 ? C4 UQ8 401 H 1 HETATM 21 O O4 UQ8 . . . BA 20 100.553 110.423 136.809 1 120.65 ? O4 UQ8 401 H 1 HETATM 22 C C4M UQ8 . . . BA 20 99.558 111.349 137.306 1 112.45 ? C4M UQ8 401 H 1 HETATM 23 C C5 UQ8 . . . BA 20 102.814 111.163 137.046 1 125.07 ? C5 UQ8 401 H 1 HETATM 24 O O5 UQ8 . . . BA 20 102.653 111.897 136.077 1 124.47 ? O5 UQ8 401 H 1 # _model_server_stats.io_time_ms 22 _model_server_stats.parse_time_ms 14 _model_server_stats.create_model_time_ms 69 _model_server_stats.query_time_ms 335 _model_server_stats.encode_time_ms 6 _model_server_stats.element_count 24 #