data_8ZCR # _model_server_result.job_id 7Kvv7BhMJCGri5VcBgFFug _model_server_result.datetime_utc '2024-12-23 04:07:58' _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 8zcr # _model_server_params.name atom_site _model_server_params.value '{"label_asym_id":"O","auth_seq_id":413}' # _entry.id 8ZCR # _exptl.entry_id 8ZCR _exptl.method 'X-RAY DIFFRACTION' # _entity.details ? _entity.formula_weight 65.409 _entity.id 3 _entity.src_method syn _entity.type non-polymer _entity.pdbx_description 'ZINC ION' _entity.pdbx_number_of_molecules 18 _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 8ZCR _cell.length_a 68.512 _cell.length_b 82.323 _cell.length_c 101.167 _cell.Z_PDB 4 _cell.pdbx_unique_axis ? # _symmetry.entry_id 8ZCR _symmetry.cell_setting ? _symmetry.Int_Tables_number 19 _symmetry.space_group_name_Hall ? _symmetry.space_group_name_H-M 'P 21 21 21' # _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,L,M,N,O,P,Q,R,S,T,U,V,W _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 x,y,z _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 # loop_ _struct_asym.details _struct_asym.entity_id _struct_asym.id _struct_asym.pdbx_modified _struct_asym.pdbx_blank_PDB_chainid_flag ? 3 C N N ? 3 D N N ? 3 E N N ? 3 F N N ? 3 G N N ? 3 H N N ? 3 I N N ? 3 J N N ? 3 K N N ? 3 L N N ? 3 M N N ? 3 N N N ? 3 O N N ? 3 P N N ? 3 Q N N ? 3 R N N ? 3 S N N ? 3 T 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 metalc ? metalc1 A NE2 HIS 26 A HIS 26 1_555 O ZN ZN . A ZN 413 4_545 ? ? ? ? ? ? ? ? ? ? ? ? 2.096 ? metalc ? metalc2 A OE1 GLU 63 A GLU 63 1_555 P ZN ZN . A ZN 414 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.339 ? metalc ? metalc3 A OD1 ASP 65 A ASP 65 1_555 O ZN ZN . A ZN 413 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.096 ? metalc ? metalc4 A NE2 HIS 67 A HIS 67 1_555 P ZN ZN . A ZN 414 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.082 ? metalc ? metalc5 A SG CYS 98 A CYS 98 1_555 H ZN ZN . A ZN 406 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.247 ? metalc ? metalc6 A O HIS 113 A HIS 113 1_555 M ZN ZN . A ZN 411 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.404 ? metalc ? metalc7 A ND1 HIS 113 A HIS 113 1_555 M ZN ZN . A ZN 411 1_555 ? A ? ? ? ? ? ? ? ? ? ? 2.254 ? metalc ? metalc8 A NE2 HIS 113 A HIS 113 1_555 N ZN ZN . A ZN 412 1_555 ? B ? ? ? ? ? ? ? ? ? ? 2.077 ? metalc ? metalc9 A OE2 GLU 115 A GLU 115 1_555 M ZN ZN . A ZN 411 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.214 ? metalc ? metalc10 A OE1 GLU 118 A GLU 118 1_555 L ZN ZN . A ZN 410 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.388 ? metalc ? metalc11 A ND1 HIS 131 A HIS 131 1_555 I ZN ZN . A ZN 407 2_454 ? ? ? ? ? ? ? ? ? ? ? ? 1.929 ? metalc ? metalc12 A OE1 GLU 141 A GLU 141 1_555 C ZN ZN . A ZN 401 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.669 ? metalc ? metalc13 A OE2 GLU 141 A GLU 141 1_555 C ZN ZN . A ZN 401 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.625 ? metalc ? metalc14 A OD2 ASP 154 A ASP 154 1_555 E ZN ZN . A ZN 403 4_545 ? ? ? ? ? ? ? ? ? ? ? ? 1.979 ? metalc ? metalc15 A OE1 GLU 156 A GLU 156 1_555 E ZN ZN . A ZN 403 4_545 ? ? ? ? ? ? ? ? ? ? ? ? 2.516 ? metalc ? metalc16 A OE2 GLU 156 A GLU 156 1_555 G ZN ZN . A ZN 405 4_545 ? ? ? ? ? ? ? ? ? ? ? ? 2 ? metalc ? metalc17 A OE1 GLU 177 A GLU 177 1_555 Q ZN ZN . A ZN 415 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.488 ? metalc ? metalc18 A OE2 GLU 191 A GLU 191 1_555 P ZN ZN . A ZN 414 4_545 ? ? ? ? ? ? ? ? ? ? ? ? 2.352 ? metalc ? metalc19 A NE2 HIS 208 A HIS 208 1_555 F ZN ZN . A ZN 404 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 1.961 ? metalc ? metalc20 A OD2 ASP 234 A ASP 234 1_555 F ZN ZN . A ZN 404 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.06 ? metalc ? metalc21 A OD1 ASP 235 A ASP 235 1_555 T ZN ZN . B ZN 403 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.154 ? metalc ? metalc22 A OD2 ASP 258 A ASP 258 1_555 E ZN ZN . A ZN 403 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 1.909 ? metalc ? metalc23 A SG CYS 259 A CYS 259 1_555 E ZN ZN . A ZN 403 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.396 ? metalc ? metalc24 A SG CYS 259 A CYS 259 1_555 G ZN ZN . A ZN 405 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.378 ? metalc ? metalc25 A OE1 GLU 264 A GLU 264 1_555 I ZN ZN . A ZN 407 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.074 ? metalc ? metalc26 A OE2 GLU 276 A GLU 276 1_555 K ZN ZN . A ZN 409 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.352 ? metalc ? metalc27 A NE2 HIS 286 A HIS 286 1_555 D ZN ZN . A ZN 402 1_555 ? A ? ? ? ? ? ? ? ? ? ? 2.072 ? metalc ? metalc28 A NE2 HIS 286 A HIS 286 1_555 J ZN ZN . A ZN 408 1_555 ? B ? ? ? ? ? ? ? ? ? ? 1.998 ? metalc ? metalc29 A OE2 GLU 306 A GLU 306 1_555 H ZN ZN . A ZN 406 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 1.783 ? metalc ? metalc30 E ZN ZN . A ZN 403 1_555 V O HOH . A HOH 531 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.279 ? metalc ? metalc31 G ZN ZN . A ZN 405 1_555 V O HOH . A HOH 629 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.481 ? metalc ? metalc32 I ZN ZN . A ZN 407 1_555 V O HOH . A HOH 611 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.007 ? metalc ? metalc33 I ZN ZN . A ZN 407 1_555 V O HOH . A HOH 613 2_455 ? ? ? ? ? ? ? ? ? ? ? ? 1.932 ? metalc ? metalc34 L ZN ZN . A ZN 410 1_555 V O HOH . A HOH 505 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.472 ? metalc ? metalc35 O ZN ZN . A ZN 413 1_555 V O HOH . A HOH 501 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 1.847 ? metalc ? metalc36 O ZN ZN . A ZN 413 1_555 V O HOH . A HOH 619 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 1.777 ? metalc ? metalc37 V O HOH . A HOH 566 1_555 T ZN ZN . B ZN 403 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.485 ? metalc ? metalc38 V O HOH . A HOH 596 1_555 T ZN ZN . B ZN 403 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.15 ? metalc ? metalc39 B SG CYS 11 B CYS 352 1_555 S ZN ZN . B ZN 402 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.206 ? metalc ? metalc40 B OD2 ASP 13 B ASP 354 1_555 S ZN ZN . B ZN 402 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 1.862 ? metalc ? metalc41 B OD1 ASP 13 B ASP 354 1_555 T ZN ZN . B ZN 403 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.107 ? metalc ? metalc42 B ND1 HIS 14 B HIS 355 1_555 T ZN ZN . B ZN 403 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.197 ? metalc ? metalc43 B NE2 HIS 22 B HIS 363 1_555 R ZN ZN . B ZN 401 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.678 ? metalc ? metalc44 S ZN ZN . B ZN 402 1_555 W O HOH . B HOH 504 1_555 ? ? ? ? ? ? ? ? ? ? ? ? 2.619 ? # _chem_comp.formula 'Zn 2' _chem_comp.formula_weight 65.409 _chem_comp.id ZN _chem_comp.mon_nstd_flag . _chem_comp.name 'ZINC ION' _chem_comp.type non-polymer _chem_comp.pdbx_synonyms ? # _atom_sites.entry_id 8ZCR _atom_sites.fract_transf_matrix[1][1] 0.014596 _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] 0.012147 _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] 0.009885 _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 C 3 ZN A 1 401 401 ZN ZN . D 3 ZN A 1 402 402 ZN ZN . E 3 ZN A 1 403 403 ZN ZN . F 3 ZN A 1 404 404 ZN ZN . G 3 ZN A 1 405 405 ZN ZN . H 3 ZN A 1 406 406 ZN ZN . I 3 ZN A 1 407 408 ZN ZN . J 3 ZN A 1 408 410 ZN ZN . K 3 ZN A 1 409 411 ZN ZN . L 3 ZN A 1 410 412 ZN ZN . M 3 ZN A 1 411 413 ZN ZN . N 3 ZN A 1 412 416 ZN ZN . O 3 ZN A 1 413 1 ZN ZN . P 3 ZN A 1 414 2 ZN ZN . Q 3 ZN A 1 415 3 ZN ZN . R 3 ZN B 1 401 401 ZN ZN . S 3 ZN B 1 402 402 ZN ZN . T 3 ZN B 1 403 403 ZN ZN . U 4 EDO B 1 404 404 EDO EDO . V 5 HOH A 1 501 2 HOH HOH . V 5 HOH A 2 502 507 HOH HOH . V 5 HOH A 3 503 508 HOH HOH . V 5 HOH A 4 504 502 HOH HOH . V 5 HOH A 5 505 501 HOH HOH . V 5 HOH A 6 506 504 HOH HOH . V 5 HOH A 7 507 505 HOH HOH . V 5 HOH A 8 508 520 HOH HOH . V 5 HOH A 9 509 511 HOH HOH . V 5 HOH A 10 510 513 HOH HOH . V 5 HOH A 11 511 531 HOH HOH . V 5 HOH A 12 512 503 HOH HOH . V 5 HOH A 13 513 6 HOH HOH . V 5 HOH A 14 514 533 HOH HOH . V 5 HOH A 15 515 519 HOH HOH . V 5 HOH A 16 516 517 HOH HOH . V 5 HOH A 17 517 579 HOH HOH . V 5 HOH A 18 518 546 HOH HOH . V 5 HOH A 19 519 525 HOH HOH . V 5 HOH A 20 520 534 HOH HOH . V 5 HOH A 21 521 3 HOH HOH . V 5 HOH A 22 522 510 HOH HOH . V 5 HOH A 23 523 523 HOH HOH . V 5 HOH A 24 524 532 HOH HOH . V 5 HOH A 25 525 529 HOH HOH . V 5 HOH A 26 526 516 HOH HOH . V 5 HOH A 27 527 506 HOH HOH . V 5 HOH A 28 528 515 HOH HOH . V 5 HOH A 29 529 528 HOH HOH . V 5 HOH A 30 530 509 HOH HOH . V 5 HOH A 31 531 521 HOH HOH . V 5 HOH A 32 532 535 HOH HOH . V 5 HOH A 33 533 530 HOH HOH . V 5 HOH A 34 534 524 HOH HOH . V 5 HOH A 35 535 527 HOH HOH . V 5 HOH A 36 536 630 HOH HOH . V 5 HOH A 37 537 539 HOH HOH . V 5 HOH A 38 538 526 HOH HOH . V 5 HOH A 39 539 514 HOH HOH . V 5 HOH A 40 540 624 HOH HOH . V 5 HOH A 41 541 623 HOH HOH . V 5 HOH A 42 542 538 HOH HOH . V 5 HOH A 43 543 537 HOH HOH . V 5 HOH A 44 544 631 HOH HOH . V 5 HOH A 45 545 551 HOH HOH . V 5 HOH A 46 546 549 HOH HOH . V 5 HOH A 47 547 550 HOH HOH . V 5 HOH A 48 548 548 HOH HOH . V 5 HOH A 49 549 556 HOH HOH . V 5 HOH A 50 550 575 HOH HOH . V 5 HOH A 51 551 543 HOH HOH . V 5 HOH A 52 552 518 HOH HOH . V 5 HOH A 53 553 567 HOH HOH . V 5 HOH A 54 554 552 HOH HOH . V 5 HOH A 55 555 560 HOH HOH . V 5 HOH A 56 556 558 HOH HOH . V 5 HOH A 57 557 568 HOH HOH . V 5 HOH A 58 558 545 HOH HOH . V 5 HOH A 59 559 512 HOH HOH . V 5 HOH A 60 560 577 HOH HOH . V 5 HOH A 61 561 571 HOH HOH . V 5 HOH A 62 562 562 HOH HOH . V 5 HOH A 63 563 554 HOH HOH . V 5 HOH A 64 564 580 HOH HOH . V 5 HOH A 65 565 566 HOH HOH . V 5 HOH A 66 566 540 HOH HOH . V 5 HOH A 67 567 563 HOH HOH . V 5 HOH A 68 568 553 HOH HOH . V 5 HOH A 69 569 536 HOH HOH . V 5 HOH A 70 570 565 HOH HOH . V 5 HOH A 71 571 555 HOH HOH . V 5 HOH A 72 572 572 HOH HOH . V 5 HOH A 73 573 557 HOH HOH . V 5 HOH A 74 574 547 HOH HOH . V 5 HOH A 75 575 576 HOH HOH . V 5 HOH A 76 576 581 HOH HOH . V 5 HOH A 77 577 561 HOH HOH . V 5 HOH A 78 578 582 HOH HOH . V 5 HOH A 79 579 570 HOH HOH . V 5 HOH A 80 580 583 HOH HOH . V 5 HOH A 81 581 574 HOH HOH . V 5 HOH A 82 582 584 HOH HOH . V 5 HOH A 83 583 578 HOH HOH . V 5 HOH A 84 584 573 HOH HOH . V 5 HOH A 85 585 602 HOH HOH . V 5 HOH A 86 586 585 HOH HOH . V 5 HOH A 87 587 559 HOH HOH . V 5 HOH A 88 588 595 HOH HOH . V 5 HOH A 89 589 593 HOH HOH . V 5 HOH A 90 590 588 HOH HOH . V 5 HOH A 91 591 597 HOH HOH . V 5 HOH A 92 592 564 HOH HOH . V 5 HOH A 93 593 541 HOH HOH . V 5 HOH A 94 594 589 HOH HOH . V 5 HOH A 95 595 599 HOH HOH . V 5 HOH A 96 596 508 HOH HOH . V 5 HOH A 97 597 590 HOH HOH . V 5 HOH A 98 598 604 HOH HOH . V 5 HOH A 99 599 592 HOH HOH . V 5 HOH A 100 600 598 HOH HOH . V 5 HOH A 101 601 603 HOH HOH . V 5 HOH A 102 602 591 HOH HOH . V 5 HOH A 103 603 607 HOH HOH . V 5 HOH A 104 604 587 HOH HOH . V 5 HOH A 105 605 8 HOH HOH . V 5 HOH A 106 606 586 HOH HOH . V 5 HOH A 107 607 606 HOH HOH . V 5 HOH A 108 608 601 HOH HOH . V 5 HOH A 109 609 596 HOH HOH . V 5 HOH A 110 610 600 HOH HOH . V 5 HOH A 111 611 609 HOH HOH . V 5 HOH A 112 612 613 HOH HOH . V 5 HOH A 113 613 617 HOH HOH . V 5 HOH A 114 614 612 HOH HOH . V 5 HOH A 115 615 4 HOH HOH . V 5 HOH A 116 616 610 HOH HOH . V 5 HOH A 117 617 614 HOH HOH . V 5 HOH A 118 618 605 HOH HOH . V 5 HOH A 119 619 1 HOH HOH . V 5 HOH A 120 620 608 HOH HOH . V 5 HOH A 121 621 616 HOH HOH . V 5 HOH A 122 622 615 HOH HOH . V 5 HOH A 123 623 618 HOH HOH . V 5 HOH A 124 624 619 HOH HOH . V 5 HOH A 125 625 620 HOH HOH . V 5 HOH A 126 626 621 HOH HOH . V 5 HOH A 127 627 5 HOH HOH . V 5 HOH A 128 628 622 HOH HOH . V 5 HOH A 129 629 628 HOH HOH . V 5 HOH A 130 630 625 HOH HOH . V 5 HOH A 131 631 626 HOH HOH . V 5 HOH A 132 632 627 HOH HOH . V 5 HOH A 133 633 629 HOH HOH . V 5 HOH A 134 634 632 HOH HOH . W 5 HOH B 1 501 502 HOH HOH . W 5 HOH B 2 502 503 HOH HOH . W 5 HOH B 3 503 504 HOH HOH . W 5 HOH B 4 504 501 HOH HOH . W 5 HOH B 5 505 505 HOH HOH . W 5 HOH B 6 506 506 HOH HOH . W 5 HOH B 7 507 507 HOH HOH . W 5 HOH B 8 508 509 HOH HOH . W 5 HOH B 9 509 510 HOH HOH . # _atom_site.group_PDB HETATM _atom_site.id 1 _atom_site.type_symbol ZN _atom_site.label_atom_id ZN _atom_site.label_comp_id ZN _atom_site.label_seq_id . _atom_site.label_alt_id . _atom_site.pdbx_PDB_ins_code . _atom_site.label_asym_id O _atom_site.label_entity_id 3 _atom_site.Cartn_x -32.541 _atom_site.Cartn_y -27.936 _atom_site.Cartn_z -5.603 _atom_site.occupancy 1 _atom_site.B_iso_or_equiv 49.45 _atom_site.pdbx_formal_charge ? _atom_site.auth_atom_id ZN _atom_site.auth_comp_id ZN _atom_site.auth_seq_id 413 _atom_site.auth_asym_id A _atom_site.pdbx_PDB_model_num 1 # _model_server_stats.io_time_ms 10 _model_server_stats.parse_time_ms 16 _model_server_stats.create_model_time_ms 15 _model_server_stats.query_time_ms 274 _model_server_stats.encode_time_ms 5 _model_server_stats.element_count 1 #