data_3B1U
#
_model_server_result.job_id            F-TtD0WYnpjL7sqtwoBp9g 
_model_server_result.datetime_utc      '2024-11-26 11:12:40' 
_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          3b1u 
#
_model_server_params.name     atom_site 
_model_server_params.value    '{"label_asym_id":"G","auth_seq_id":901}' 
#
_entry.id    3B1U 
#
_exptl.entry_id    3B1U 
_exptl.method      'X-RAY DIFFRACTION' 
#
_entity.details                     ? 
_entity.formula_weight              40.078 
_entity.id                          4 
_entity.src_method                  syn 
_entity.type                        non-polymer 
_entity.pdbx_description            'CALCIUM ION' 
_entity.pdbx_number_of_molecules    5 
_entity.pdbx_parent_entity_id       . 
_entity.pdbx_mutation               ? 
_entity.pdbx_fragment               ? 
_entity.pdbx_ec                     ? 
#
_cell.angle_alpha         90 
_cell.angle_beta          124.43 
_cell.angle_gamma         90 
_cell.entry_id            3B1U 
_cell.length_a            146.422 
_cell.length_b            60.468 
_cell.length_c            115.506 
_cell.Z_PDB               4 
_cell.pdbx_unique_axis    ? 
#
_symmetry.entry_id                 3B1U 
_symmetry.cell_setting             ? 
_symmetry.Int_Tables_number        5 
_symmetry.space_group_name_Hall    ? 
_symmetry.space_group_name_H-M     'C 1 2 1' 
#
_pdbx_struct_assembly.method_details        PISA 
_pdbx_struct_assembly.oligomeric_details    dimeric 
_pdbx_struct_assembly.oligomeric_count      2 
_pdbx_struct_assembly.details               author_and_software_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 
_pdbx_struct_assembly_gen.assembly_id        1 
_pdbx_struct_assembly_gen.oper_expression    1,2 
#
loop_
_pdbx_struct_oper_list.id
_pdbx_struct_oper_list.type
_pdbx_struct_oper_list.name
_pdbx_struct_oper_list.symmetry_operation
_pdbx_struct_oper_list.matrix[1][1]
_pdbx_struct_oper_list.matrix[1][2]
_pdbx_struct_oper_list.matrix[1][3]
_pdbx_struct_oper_list.matrix[2][1]
_pdbx_struct_oper_list.matrix[2][2]
_pdbx_struct_oper_list.matrix[2][3]
_pdbx_struct_oper_list.matrix[3][1]
_pdbx_struct_oper_list.matrix[3][2]
_pdbx_struct_oper_list.matrix[3][3]
_pdbx_struct_oper_list.vector[1]
_pdbx_struct_oper_list.vector[2]
_pdbx_struct_oper_list.vector[3]
1 'identity operation' 1_555 x,y,z 1 0 0 0 1 0 0 0 1 0 0 0 
2 'crystal symmetry operation' 2_555 -x,y,-z -1 0 0 0 1 0 0 0 -1 0 0 0 
#
loop_
_struct_asym.details
_struct_asym.entity_id
_struct_asym.id
_struct_asym.pdbx_modified
_struct_asym.pdbx_blank_PDB_chainid_flag
? 4 F N N 
? 4 G N N 
? 4 H N N 
? 4 I N N 
? 4 J N 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
covale ? covale1 A SG CYS 653 A CYS 645 1_555 B CAP YFF . A YFF 800 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 1.803 ? 
metalc ? metalc1 A OD1 ASN 161 A ASN 153 1_555 H CA CA . A CA 902 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.406 ? 
metalc ? metalc2 A OD1 ASP 163 A ASP 155 1_555 H CA CA . A CA 902 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.393 ? 
metalc ? metalc3 A OD2 ASP 163 A ASP 155 1_555 I CA CA . A CA 903 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.438 ? 
metalc ? metalc4 A OD2 ASP 165 A ASP 157 1_555 H CA CA . A CA 902 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.421 ? 
metalc ? metalc5 A OD1 ASP 165 A ASP 157 1_555 I CA CA . A CA 903 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.628 ? 
metalc ? metalc6 A OD2 ASP 165 A ASP 157 1_555 I CA CA . A CA 903 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.634 ? 
metalc ? metalc7 A OD2 ASP 173 A ASP 165 1_555 H CA CA . A CA 902 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.463 ? 
metalc ? metalc8 A O ASP 173 A ASP 165 1_555 J CA CA . A CA 904 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.327 ? 
metalc ? metalc9 A OD2 ASP 176 A ASP 168 1_555 J CA CA . A CA 904 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.421 ? 
metalc ? metalc10 A O GLU 178 A GLU 170 1_555 J CA CA . A CA 904 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.292 ? 
metalc ? metalc11 A OD2 ASP 184 A ASP 176 1_555 H CA CA . A CA 902 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.337 ? 
metalc ? metalc12 A OD2 ASP 187 A ASP 179 1_555 H CA CA . A CA 902 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.327 ? 
metalc ? metalc13 A OD2 ASP 187 A ASP 179 1_555 I CA CA . A CA 903 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.454 ? 
metalc ? metalc14 A OD1 ASP 187 A ASP 179 1_555 I CA CA . A CA 903 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.862 ? 
metalc ? metalc15 A OE1 GLN 357 A GLN 349 1_555 F CA CA . A CA 900 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.314 ? 
metalc ? metalc16 A OE1 GLU 359 A GLU 351 1_555 G CA CA . A CA 901 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.329 ? 
metalc ? metalc17 A OE1 GLU 361 A GLU 353 1_555 F CA CA . A CA 900 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.399 ? 
metalc ? metalc18 A OD1 ASP 377 A ASP 369 1_555 G CA CA . A CA 901 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.464 ? 
metalc ? metalc19 A O SER 378 A SER 370 1_555 G CA CA . A CA 901 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.242 ? 
metalc ? metalc20 A OD1 ASN 381 A ASN 373 1_555 G CA CA . A CA 901 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.317 ? 
metalc ? metalc21 A OD1 ASP 396 A ASP 388 1_555 I CA CA . A CA 903 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.252 ? 
metalc ? metalc22 A O PHE 415 A PHE 407 1_555 F CA CA . A CA 900 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.247 ? 
metalc ? metalc23 A O LEU 418 A LEU 410 1_555 F CA CA . A CA 900 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.459 ? 
metalc ? metalc24 A OE1 GLU 419 A GLU 411 1_555 F CA CA . A CA 900 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.605 ? 
metalc ? metalc25 K O HOH . A HOH 753 1_555 J CA CA . A CA 904 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.301 ? 
metalc ? metalc26 K O HOH . A HOH 764 1_555 I CA CA . A CA 903 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.274 ? 
metalc ? metalc27 K O HOH . A HOH 778 1_555 F CA CA . A CA 900 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.571 ? 
metalc ? metalc28 K O HOH . A HOH 781 1_555 F CA CA . A CA 900 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.342 ? 
metalc ? metalc29 K O HOH . A HOH 788 1_555 J CA CA . A CA 904 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.435 ? 
metalc ? metalc30 K O HOH . A HOH 789 1_555 G CA CA . A CA 901 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.475 ? 
metalc ? metalc31 K O HOH . A HOH 816 1_555 G CA CA . A CA 901 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.332 ? 
#
_chem_comp.formula           'Ca 2' 
_chem_comp.formula_weight    40.078 
_chem_comp.id                CA 
_chem_comp.mon_nstd_flag     . 
_chem_comp.name              'CALCIUM ION' 
_chem_comp.type              non-polymer 
_chem_comp.pdbx_synonyms     ? 
#
_atom_sites.entry_id                     3B1U 
_atom_sites.fract_transf_matrix[1][1]    0.00683 
_atom_sites.fract_transf_matrix[1][2]    0 
_atom_sites.fract_transf_matrix[1][3]    0.004682 
_atom_sites.fract_transf_matrix[2][1]    0 
_atom_sites.fract_transf_matrix[2][2]    0.016538 
_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]    0.010497 
_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
B 2 YFF A 1 800 800 YFF OF . 
C 3 SO4 A 1 905 905 SO4 SO4 . 
D 3 SO4 A 1 906 906 SO4 SO4 . 
E 3 SO4 A 1 907 907 SO4 SO4 . 
F 4 CA A 1 900 900 CA CA . 
G 4 CA A 1 901 901 CA CA . 
H 4 CA A 1 902 902 CA CA . 
I 4 CA A 1 903 903 CA CA . 
J 4 CA A 1 904 904 CA CA . 
K 5 HOH A 1 664 1 HOH HOH . 
K 5 HOH A 2 665 3 HOH HOH . 
K 5 HOH A 3 666 4 HOH HOH . 
K 5 HOH A 4 667 5 HOH HOH . 
K 5 HOH A 5 668 6 HOH HOH . 
K 5 HOH A 6 669 7 HOH HOH . 
K 5 HOH A 7 670 8 HOH HOH . 
K 5 HOH A 8 671 9 HOH HOH . 
K 5 HOH A 9 672 10 HOH HOH . 
K 5 HOH A 10 673 11 HOH HOH . 
K 5 HOH A 11 674 12 HOH HOH . 
K 5 HOH A 12 675 13 HOH HOH . 
K 5 HOH A 13 676 15 HOH HOH . 
K 5 HOH A 14 677 16 HOH HOH . 
K 5 HOH A 15 678 17 HOH HOH . 
K 5 HOH A 16 679 18 HOH HOH . 
K 5 HOH A 17 680 19 HOH HOH . 
K 5 HOH A 18 681 20 HOH HOH . 
K 5 HOH A 19 682 22 HOH HOH . 
K 5 HOH A 20 683 23 HOH HOH . 
K 5 HOH A 21 684 24 HOH HOH . 
K 5 HOH A 22 685 25 HOH HOH . 
K 5 HOH A 23 686 26 HOH HOH . 
K 5 HOH A 24 687 27 HOH HOH . 
K 5 HOH A 25 688 28 HOH HOH . 
K 5 HOH A 26 689 29 HOH HOH . 
K 5 HOH A 27 690 31 HOH HOH . 
K 5 HOH A 28 691 32 HOH HOH . 
K 5 HOH A 29 692 33 HOH HOH . 
K 5 HOH A 30 693 34 HOH HOH . 
K 5 HOH A 31 694 35 HOH HOH . 
K 5 HOH A 32 695 36 HOH HOH . 
K 5 HOH A 33 696 37 HOH HOH . 
K 5 HOH A 34 697 38 HOH HOH . 
K 5 HOH A 35 698 39 HOH HOH . 
K 5 HOH A 36 699 40 HOH HOH . 
K 5 HOH A 37 700 41 HOH HOH . 
K 5 HOH A 38 701 43 HOH HOH . 
K 5 HOH A 39 702 45 HOH HOH . 
K 5 HOH A 40 703 46 HOH HOH . 
K 5 HOH A 41 704 47 HOH HOH . 
K 5 HOH A 42 705 49 HOH HOH . 
K 5 HOH A 43 706 50 HOH HOH . 
K 5 HOH A 44 707 51 HOH HOH . 
K 5 HOH A 45 708 52 HOH HOH . 
K 5 HOH A 46 709 53 HOH HOH . 
K 5 HOH A 47 710 54 HOH HOH . 
K 5 HOH A 48 711 55 HOH HOH . 
K 5 HOH A 49 712 56 HOH HOH . 
K 5 HOH A 50 713 57 HOH HOH . 
K 5 HOH A 51 714 58 HOH HOH . 
K 5 HOH A 52 715 59 HOH HOH . 
K 5 HOH A 53 716 60 HOH HOH . 
K 5 HOH A 54 717 61 HOH HOH . 
K 5 HOH A 55 718 62 HOH HOH . 
K 5 HOH A 56 719 63 HOH HOH . 
K 5 HOH A 57 720 64 HOH HOH . 
K 5 HOH A 58 721 65 HOH HOH . 
K 5 HOH A 59 722 67 HOH HOH . 
K 5 HOH A 60 723 68 HOH HOH . 
K 5 HOH A 61 724 69 HOH HOH . 
K 5 HOH A 62 725 70 HOH HOH . 
K 5 HOH A 63 726 71 HOH HOH . 
K 5 HOH A 64 727 72 HOH HOH . 
K 5 HOH A 65 728 74 HOH HOH . 
K 5 HOH A 66 729 75 HOH HOH . 
K 5 HOH A 67 730 76 HOH HOH . 
K 5 HOH A 68 731 78 HOH HOH . 
K 5 HOH A 69 732 79 HOH HOH . 
K 5 HOH A 70 733 80 HOH HOH . 
K 5 HOH A 71 734 81 HOH HOH . 
K 5 HOH A 72 735 83 HOH HOH . 
K 5 HOH A 73 736 84 HOH HOH . 
K 5 HOH A 74 737 85 HOH HOH . 
K 5 HOH A 75 738 86 HOH HOH . 
K 5 HOH A 76 739 87 HOH HOH . 
K 5 HOH A 77 740 89 HOH HOH . 
K 5 HOH A 78 741 90 HOH HOH . 
K 5 HOH A 79 742 91 HOH HOH . 
K 5 HOH A 80 743 92 HOH HOH . 
K 5 HOH A 81 744 93 HOH HOH . 
K 5 HOH A 82 745 94 HOH HOH . 
K 5 HOH A 83 746 96 HOH HOH . 
K 5 HOH A 84 747 98 HOH HOH . 
K 5 HOH A 85 748 99 HOH HOH . 
K 5 HOH A 86 749 100 HOH HOH . 
K 5 HOH A 87 750 101 HOH HOH . 
K 5 HOH A 88 751 102 HOH HOH . 
K 5 HOH A 89 752 103 HOH HOH . 
K 5 HOH A 90 753 104 HOH HOH . 
K 5 HOH A 91 754 105 HOH HOH . 
K 5 HOH A 92 755 106 HOH HOH . 
K 5 HOH A 93 756 107 HOH HOH . 
K 5 HOH A 94 757 108 HOH HOH . 
K 5 HOH A 95 758 109 HOH HOH . 
K 5 HOH A 96 759 110 HOH HOH . 
K 5 HOH A 97 760 111 HOH HOH . 
K 5 HOH A 98 761 113 HOH HOH . 
K 5 HOH A 99 762 114 HOH HOH . 
K 5 HOH A 100 763 115 HOH HOH . 
K 5 HOH A 101 764 116 HOH HOH . 
K 5 HOH A 102 765 117 HOH HOH . 
K 5 HOH A 103 766 118 HOH HOH . 
K 5 HOH A 104 767 119 HOH HOH . 
K 5 HOH A 105 768 121 HOH HOH . 
K 5 HOH A 106 769 123 HOH HOH . 
K 5 HOH A 107 770 124 HOH HOH . 
K 5 HOH A 108 771 126 HOH HOH . 
K 5 HOH A 109 772 127 HOH HOH . 
K 5 HOH A 110 773 128 HOH HOH . 
K 5 HOH A 111 774 129 HOH HOH . 
K 5 HOH A 112 775 131 HOH HOH . 
K 5 HOH A 113 776 132 HOH HOH . 
K 5 HOH A 114 777 133 HOH HOH . 
K 5 HOH A 115 778 134 HOH HOH . 
K 5 HOH A 116 779 135 HOH HOH . 
K 5 HOH A 117 780 136 HOH HOH . 
K 5 HOH A 118 781 137 HOH HOH . 
K 5 HOH A 119 782 138 HOH HOH . 
K 5 HOH A 120 783 139 HOH HOH . 
K 5 HOH A 121 784 140 HOH HOH . 
K 5 HOH A 122 785 141 HOH HOH . 
K 5 HOH A 123 786 142 HOH HOH . 
K 5 HOH A 124 787 143 HOH HOH . 
K 5 HOH A 125 788 144 HOH HOH . 
K 5 HOH A 126 789 145 HOH HOH . 
K 5 HOH A 127 790 146 HOH HOH . 
K 5 HOH A 128 791 147 HOH HOH . 
K 5 HOH A 129 792 148 HOH HOH . 
K 5 HOH A 130 793 150 HOH HOH . 
K 5 HOH A 131 794 151 HOH HOH . 
K 5 HOH A 132 795 152 HOH HOH . 
K 5 HOH A 133 796 153 HOH HOH . 
K 5 HOH A 134 797 154 HOH HOH . 
K 5 HOH A 135 798 155 HOH HOH . 
K 5 HOH A 136 799 156 HOH HOH . 
K 5 HOH A 137 801 157 HOH HOH . 
K 5 HOH A 138 802 158 HOH HOH . 
K 5 HOH A 139 803 159 HOH HOH . 
K 5 HOH A 140 804 161 HOH HOH . 
K 5 HOH A 141 805 162 HOH HOH . 
K 5 HOH A 142 806 163 HOH HOH . 
K 5 HOH A 143 807 165 HOH HOH . 
K 5 HOH A 144 808 166 HOH HOH . 
K 5 HOH A 145 809 167 HOH HOH . 
K 5 HOH A 146 810 170 HOH HOH . 
K 5 HOH A 147 811 171 HOH HOH . 
K 5 HOH A 148 812 172 HOH HOH . 
K 5 HOH A 149 813 173 HOH HOH . 
K 5 HOH A 150 814 174 HOH HOH . 
K 5 HOH A 151 815 175 HOH HOH . 
K 5 HOH A 152 816 176 HOH HOH . 
K 5 HOH A 153 817 178 HOH HOH . 
K 5 HOH A 154 818 179 HOH HOH . 
K 5 HOH A 155 819 180 HOH HOH . 
K 5 HOH A 156 820 181 HOH HOH . 
K 5 HOH A 157 821 184 HOH HOH . 
K 5 HOH A 158 822 185 HOH HOH . 
K 5 HOH A 159 823 186 HOH HOH . 
K 5 HOH A 160 824 188 HOH HOH . 
K 5 HOH A 161 825 190 HOH HOH . 
K 5 HOH A 162 826 191 HOH HOH . 
K 5 HOH A 163 827 194 HOH HOH . 
K 5 HOH A 164 828 196 HOH HOH . 
K 5 HOH A 165 829 197 HOH HOH . 
K 5 HOH A 166 830 201 HOH HOH . 
K 5 HOH A 167 831 202 HOH HOH . 
K 5 HOH A 168 832 203 HOH HOH . 
K 5 HOH A 169 833 206 HOH HOH . 
K 5 HOH A 170 834 208 HOH HOH . 
K 5 HOH A 171 835 211 HOH HOH . 
K 5 HOH A 172 836 212 HOH HOH . 
K 5 HOH A 173 837 213 HOH HOH . 
K 5 HOH A 174 838 214 HOH HOH . 
#
_atom_site.group_PDB             HETATM 
_atom_site.id                    1 
_atom_site.type_symbol           CA 
_atom_site.label_atom_id         CA 
_atom_site.label_comp_id         CA 
_atom_site.label_seq_id          . 
_atom_site.label_alt_id          . 
_atom_site.pdbx_PDB_ins_code     . 
_atom_site.label_asym_id         G 
_atom_site.label_entity_id       4 
_atom_site.Cartn_x               -20.287 
_atom_site.Cartn_y               16.809 
_atom_site.Cartn_z               -7.423 
_atom_site.occupancy             1 
_atom_site.B_iso_or_equiv        54.31 
_atom_site.pdbx_formal_charge    ? 
_atom_site.auth_atom_id          CA 
_atom_site.auth_comp_id          CA 
_atom_site.auth_seq_id           901 
_atom_site.auth_asym_id          A 
_atom_site.pdbx_PDB_model_num    1 
#
_model_server_stats.io_time_ms              17 
_model_server_stats.parse_time_ms           8 
_model_server_stats.create_model_time_ms    5 
_model_server_stats.query_time_ms           272 
_model_server_stats.encode_time_ms          2 
_model_server_stats.element_count           1 
#