data_A1C21 # _chem_comp.id A1C21 _chem_comp.name "4-oxo-4-[(2-{2-[4,7,10-tris(carboxymethyl)-1,4,7,10-tetraazacyclododecan-1-yl]acetamido}ethyl)amino]butanoic acid" _chem_comp.type non-polymer _chem_comp.pdbx_type HETAIN _chem_comp.formula "C22 H38 N6 O10" _chem_comp.mon_nstd_parent_comp_id ? _chem_comp.pdbx_synonyms ? _chem_comp.pdbx_formal_charge 0 _chem_comp.pdbx_initial_date 2025-12-09 _chem_comp.pdbx_modified_date 2026-01-09 _chem_comp.pdbx_ambiguous_flag N _chem_comp.pdbx_release_status REL _chem_comp.pdbx_replaced_by ? _chem_comp.pdbx_replaces ? _chem_comp.formula_weight 546.571 _chem_comp.one_letter_code ? _chem_comp.three_letter_code A1C21 _chem_comp.pdbx_model_coordinates_details ? _chem_comp.pdbx_model_coordinates_missing_flag N _chem_comp.pdbx_ideal_coordinates_details Corina _chem_comp.pdbx_ideal_coordinates_missing_flag N _chem_comp.pdbx_model_coordinates_db_code 9P4D _chem_comp.pdbx_subcomponent_list ? _chem_comp.pdbx_processing_site RCSB _chem_comp.pdbx_pcm ? # loop_ _chem_comp_atom.comp_id _chem_comp_atom.atom_id _chem_comp_atom.alt_atom_id _chem_comp_atom.type_symbol _chem_comp_atom.charge _chem_comp_atom.pdbx_align _chem_comp_atom.pdbx_aromatic_flag _chem_comp_atom.pdbx_leaving_atom_flag _chem_comp_atom.pdbx_stereo_config _chem_comp_atom.pdbx_n_terminal_atom_flag _chem_comp_atom.pdbx_backbone_atom_flag _chem_comp_atom.pdbx_c_terminal_atom_flag _chem_comp_atom.model_Cartn_x _chem_comp_atom.model_Cartn_y _chem_comp_atom.model_Cartn_z _chem_comp_atom.pdbx_model_Cartn_x_ideal _chem_comp_atom.pdbx_model_Cartn_y_ideal _chem_comp_atom.pdbx_model_Cartn_z_ideal _chem_comp_atom.pdbx_component_atom_id _chem_comp_atom.pdbx_component_comp_id _chem_comp_atom.pdbx_ordinal A1C21 C8 C1 C 0 1 N N N N N N 10.200 -49.670 27.621 -3.104 -1.739 1.789 C8 A1C21 1 A1C21 C5 C2 C 0 1 N N N N N N 13.983 -46.857 28.308 -1.074 1.988 1.228 C5 A1C21 2 A1C21 C6 C3 C 0 1 N N N N N N 13.598 -48.165 27.561 -2.011 1.606 2.376 C6 A1C21 3 A1C21 N1 N1 N 0 1 N N N N N N 9.520 -48.345 27.632 -4.145 -1.648 0.757 N1 A1C21 4 A1C21 C2 C4 C 0 1 N N N N N N 9.261 -46.218 26.366 -4.012 -0.671 -1.485 C2 A1C21 5 A1C21 N3 N2 N 0 1 N N N N N N 12.852 -45.888 28.270 -1.859 2.564 0.128 N3 A1C21 6 A1C21 C4 C5 C 0 1 N N N N N N 12.477 -45.662 26.850 -1.562 1.887 -1.141 C4 A1C21 7 A1C21 C01 C6 C 0 1 N N N N N N 8.232 -45.010 29.091 -1.412 -1.982 -2.065 C01 A1C21 8 A1C21 C02 C7 C 0 1 N N N N N N 9.191 -44.518 27.994 -1.592 -0.595 -1.505 C02 A1C21 9 A1C21 C03 C8 C 0 1 N N N N N N 13.371 -44.617 28.824 -1.628 4.011 0.019 C03 A1C21 10 A1C21 C04 C9 C 0 1 N N N N N N 15.193 -53.707 28.642 8.545 -0.798 -0.771 C04 A1C21 11 A1C21 C05 C10 C 0 1 N N N N N N 16.558 -53.172 29.297 9.948 -0.311 -0.519 C05 A1C21 12 A1C21 C08 C11 C 0 1 N N N N N N 14.495 -54.336 29.901 7.588 -0.129 0.218 C08 A1C21 13 A1C21 C09 C12 C 0 1 N N N N N N 13.123 -53.687 30.180 6.184 -0.616 -0.034 C09 A1C21 14 A1C21 C1 C13 C 0 1 N N N N N N 9.556 -47.745 26.264 -3.573 -1.827 -0.585 C1 A1C21 15 A1C21 C10 C14 C 0 1 N N N N N N 8.086 -48.679 27.790 -5.219 -2.619 1.005 C10 A1C21 16 A1C21 C11 C15 C 0 1 N N N N N N 14.156 -52.171 31.937 3.802 -0.633 0.478 C11 A1C21 17 A1C21 C12 C16 C 0 1 N N N N N N 14.792 -50.966 31.200 2.845 0.037 1.467 C12 A1C21 18 A1C21 C13 C17 C 0 1 N N N N N N 12.308 -44.035 29.764 -2.621 4.606 -0.946 C13 A1C21 19 A1C21 C14 C18 C 0 1 N N N N N N 13.088 -49.171 30.643 0.462 0.020 1.978 C14 A1C21 20 A1C21 C3 C19 C 0 1 N N N N N N 11.131 -44.871 26.756 -2.870 1.441 -1.799 C3 A1C21 21 A1C21 C41 C20 C 0 1 N N N N N N 12.868 -49.804 29.239 -0.941 -0.467 1.727 C41 A1C21 22 A1C21 C7 C21 C 0 1 N N N N N N 11.683 -49.533 27.159 -3.164 -0.500 2.685 C7 A1C21 23 A1C21 C9 C22 C 0 1 N N N N N N 7.745 -48.363 29.240 -6.376 -2.335 0.082 C9 A1C21 24 A1C21 N10 N3 N 0 1 N N N N N N 12.981 -52.638 31.191 5.166 -0.159 0.723 N10 A1C21 25 A1C21 N13 N4 N 0 1 N N N N N N 14.048 -49.761 31.584 1.480 -0.437 1.222 N13 A1C21 26 A1C21 N2 N5 N 0 1 N N N N N N 10.053 -45.610 27.475 -2.827 -0.007 -2.043 N2 A1C21 27 A1C21 N4 N6 N 0 1 N N N N N N 12.435 -48.808 28.218 -1.860 0.176 2.675 N4 A1C21 28 A1C21 O01 O1 O 0 1 N N N N N N 8.490 -47.720 30.015 -6.312 -1.419 -0.702 O01 A1C21 29 A1C21 O06 O2 O 0 1 N N N N N N 17.553 -54.123 29.726 10.161 0.490 0.361 O06 A1C21 30 A1C21 O07 O3 O 0 1 N N N N N N 17.151 -52.062 28.634 10.962 -0.766 -1.272 O07 A1C21 31 A1C21 O15 O4 O 0 1 N N N N N N 12.497 -48.207 30.985 0.676 0.824 2.861 O15 A1C21 32 A1C21 O2 O5 O 0 1 N N N N N N 8.549 -45.543 30.192 -0.345 -2.716 -1.710 O2 A1C21 33 A1C21 O3 O6 O 0 1 N N N N N N 11.332 -44.660 30.252 -2.599 5.923 -1.205 O3 A1C21 34 A1C21 O42 O7 O 0 1 N N N N N N 12.165 -54.058 29.589 5.970 -1.419 -0.916 O42 A1C21 35 A1C21 O6 O8 O 0 1 N N N N N N 6.714 -48.642 29.915 -7.477 -3.101 0.132 O6 A1C21 36 A1C21 O7 O9 O 0 1 N N N N N N 6.968 -44.974 29.067 -2.227 -2.435 -2.832 O7 A1C21 37 A1C21 O8 O10 O 0 1 N N N N N N 12.205 -42.857 30.206 -3.437 3.898 -1.487 O8 A1C21 38 A1C21 H81 H1 H 0 1 N N N N N N 10.177 -50.095 28.635 -3.267 -2.632 2.392 H81 A1C21 39 A1C21 H82 H2 H 0 1 N N N N N N 9.669 -50.341 26.930 -2.125 -1.796 1.313 H82 A1C21 40 A1C21 H51 H3 H 0 1 N N N N N N 14.862 -46.408 27.823 -0.348 2.721 1.580 H51 A1C21 41 A1C21 H52 H4 H 0 1 N N N N N N 14.223 -47.094 29.355 -0.551 1.099 0.875 H52 A1C21 42 A1C21 H43 H5 H 0 1 N N N N N N 14.453 -48.857 27.577 -1.758 2.191 3.261 H43 A1C21 43 A1C21 H61 H6 H 0 1 N N N N N N 13.340 -47.925 26.519 -3.042 1.810 2.088 H61 A1C21 44 A1C21 H22 H8 H 0 1 N N N N N N 9.533 -45.732 25.417 -4.629 -1.056 -2.297 H22 A1C21 45 A1C21 H23 H9 H 0 1 N N N N N N 8.189 -46.068 26.561 -4.589 0.047 -0.900 H23 A1C21 46 A1C21 H41 H11 H 0 1 N N N N N N 12.361 -46.634 26.347 -1.037 2.573 -1.806 H41 A1C21 47 A1C21 H42 H12 H 0 1 N N N N N N 13.271 -45.085 26.354 -0.936 1.015 -0.950 H42 A1C21 48 A1C21 H021 H13 H 0 0 N N N N N N 8.599 -44.108 27.163 -1.658 -0.647 -0.418 H021 A1C21 49 A1C21 H022 H14 H 0 0 N N N N N N 9.832 -43.728 28.412 -0.742 0.025 -1.788 H022 A1C21 50 A1C21 H031 H15 H 0 0 N N N N N N 14.299 -44.806 29.383 -1.751 4.473 0.998 H031 A1C21 51 A1C21 H032 H16 H 0 0 N N N N N N 13.573 -43.909 28.006 -0.616 4.191 -0.344 H032 A1C21 52 A1C21 H041 H17 H 0 0 N N N N N N 14.598 -52.885 28.216 8.250 -0.546 -1.789 H041 A1C21 53 A1C21 H042 H18 H 0 0 N N N N N N 15.384 -54.462 27.865 8.506 -1.879 -0.638 H042 A1C21 54 A1C21 H081 H19 H 0 0 N N N N N N 14.351 -55.413 29.727 7.883 -0.381 1.237 H081 A1C21 55 A1C21 H082 H20 H 0 0 N N N N N N 15.143 -54.189 30.778 7.626 0.952 0.086 H082 A1C21 56 A1C21 H11 H21 H 0 1 N N N N N N 10.551 -47.899 25.821 -2.486 -1.842 -0.517 H11 A1C21 57 A1C21 H12 H22 H 0 1 N N N N N N 8.795 -48.225 25.632 -3.925 -2.769 -1.006 H12 A1C21 58 A1C21 H101 H23 H 0 0 N N N N N N 7.473 -48.069 27.110 -4.847 -3.627 0.823 H101 A1C21 59 A1C21 H102 H24 H 0 0 N N N N N N 7.915 -49.745 27.580 -5.551 -2.536 2.040 H102 A1C21 60 A1C21 H111 H25 H 0 0 N N N N N N 13.850 -51.862 32.947 3.763 -1.714 0.610 H111 A1C21 61 A1C21 H112 H26 H 0 0 N N N N N N 14.891 -52.986 32.010 3.507 -0.381 -0.541 H112 A1C21 62 A1C21 H121 H27 H 0 0 N N N N N N 15.847 -50.863 31.493 3.140 -0.215 2.485 H121 A1C21 63 A1C21 H122 H28 H 0 0 N N N N N N 14.726 -51.116 30.112 2.883 1.118 1.334 H122 A1C21 64 A1C21 H31 H29 H 0 1 N N N N N N 10.850 -44.755 25.699 -3.706 1.673 -1.140 H31 A1C21 65 A1C21 H32 H30 H 0 1 N N N N N N 11.259 -43.879 27.213 -2.997 1.965 -2.746 H32 A1C21 66 A1C21 H411 H31 H 0 0 N N N N N N 12.095 -50.582 29.321 -1.236 -0.215 0.708 H411 A1C21 67 A1C21 H412 H32 H 0 0 N N N N N N 13.812 -50.260 28.907 -0.980 -1.548 1.859 H412 A1C21 68 A1C21 H71 H33 H 0 1 N N N N N N 11.729 -48.968 26.217 -3.929 0.181 2.312 H71 A1C21 69 A1C21 H72 H34 H 0 1 N N N N N N 12.120 -50.531 27.009 -3.410 -0.801 3.704 H72 A1C21 70 A1C21 H103 H35 H 0 0 N N N N N N 12.082 -52.239 31.374 5.337 0.484 1.429 H103 A1C21 71 A1C21 H131 H36 H 0 0 N N N N N N 14.194 -49.344 32.481 1.309 -1.080 0.516 H131 A1C21 72 A1C21 H071 H39 H 0 0 N N N N N N 18.094 -52.175 28.608 11.844 -0.424 -1.073 H071 A1C21 73 A1C21 H3 H40 H 0 1 N N N N N N 7.762 -45.760 30.678 -0.272 -3.600 -2.095 H3 A1C21 74 A1C21 H5 H41 H 0 1 N N N N N N 10.819 -44.073 30.796 -3.255 6.259 -1.830 H5 A1C21 75 A1C21 H7 H42 H 0 1 N N N N N N 6.805 -48.290 30.793 -8.193 -2.881 -0.480 H7 A1C21 76 # loop_ _chem_comp_bond.comp_id _chem_comp_bond.atom_id_1 _chem_comp_bond.atom_id_2 _chem_comp_bond.value_order _chem_comp_bond.pdbx_aromatic_flag _chem_comp_bond.pdbx_stereo_config _chem_comp_bond.pdbx_ordinal A1C21 C01 C02 SING N N 1 A1C21 C01 O2 SING N N 2 A1C21 C01 O7 DOUB N N 3 A1C21 C1 N1 SING N N 4 A1C21 C1 C2 SING N N 5 A1C21 N1 C8 SING N N 6 A1C21 N1 C10 SING N N 7 A1C21 O01 C9 DOUB N N 8 A1C21 C02 N2 SING N N 9 A1C21 C2 N2 SING N N 10 A1C21 N2 C3 SING N N 11 A1C21 C03 N3 SING N N 12 A1C21 C03 C13 SING N N 13 A1C21 C3 C4 SING N N 14 A1C21 N3 C4 SING N N 15 A1C21 N3 C5 SING N N 16 A1C21 O3 C13 SING N N 17 A1C21 C04 C05 SING N N 18 A1C21 C04 C08 SING N N 19 A1C21 N4 C6 SING N N 20 A1C21 N4 C7 SING N N 21 A1C21 N4 C41 SING N N 22 A1C21 C05 O06 DOUB N N 23 A1C21 C05 O07 SING N N 24 A1C21 C5 C6 SING N N 25 A1C21 O6 C9 SING N N 26 A1C21 C7 C8 SING N N 27 A1C21 C08 C09 SING N N 28 A1C21 O8 C13 DOUB N N 29 A1C21 C09 N10 SING N N 30 A1C21 C09 O42 DOUB N N 31 A1C21 C9 C10 SING N N 32 A1C21 N10 C11 SING N N 33 A1C21 C11 C12 SING N N 34 A1C21 C12 N13 SING N N 35 A1C21 N13 C14 SING N N 36 A1C21 C14 O15 DOUB N N 37 A1C21 C14 C41 SING N N 38 A1C21 C8 H81 SING N N 39 A1C21 C8 H82 SING N N 40 A1C21 C5 H51 SING N N 41 A1C21 C5 H52 SING N N 42 A1C21 C6 H43 SING N N 43 A1C21 C6 H61 SING N N 44 A1C21 C2 H22 SING N N 45 A1C21 C2 H23 SING N N 46 A1C21 C4 H41 SING N N 47 A1C21 C4 H42 SING N N 48 A1C21 C02 H021 SING N N 49 A1C21 C02 H022 SING N N 50 A1C21 C03 H031 SING N N 51 A1C21 C03 H032 SING N N 52 A1C21 C04 H041 SING N N 53 A1C21 C04 H042 SING N N 54 A1C21 C08 H081 SING N N 55 A1C21 C08 H082 SING N N 56 A1C21 C1 H11 SING N N 57 A1C21 C1 H12 SING N N 58 A1C21 C10 H101 SING N N 59 A1C21 C10 H102 SING N N 60 A1C21 C11 H111 SING N N 61 A1C21 C11 H112 SING N N 62 A1C21 C12 H121 SING N N 63 A1C21 C12 H122 SING N N 64 A1C21 C3 H31 SING N N 65 A1C21 C3 H32 SING N N 66 A1C21 C41 H411 SING N N 67 A1C21 C41 H412 SING N N 68 A1C21 C7 H71 SING N N 69 A1C21 C7 H72 SING N N 70 A1C21 N10 H103 SING N N 71 A1C21 N13 H131 SING N N 72 A1C21 O07 H071 SING N N 73 A1C21 O2 H3 SING N N 74 A1C21 O3 H5 SING N N 75 A1C21 O6 H7 SING N N 76 # loop_ _pdbx_chem_comp_descriptor.comp_id _pdbx_chem_comp_descriptor.type _pdbx_chem_comp_descriptor.program _pdbx_chem_comp_descriptor.program_version _pdbx_chem_comp_descriptor.descriptor A1C21 SMILES ACDLabs 14.52 "O=C(O)CCC(=O)NCCNC(=O)CN1CCN(CC(=O)O)CCN(CCN(CC1)CC(=O)O)CC(=O)O" A1C21 InChI InChI 1.06 "InChI=1S/C22H38N6O10/c29-17(1-2-19(31)32)23-3-4-24-18(30)13-25-5-7-26(14-20(33)34)9-11-28(16-22(37)38)12-10-27(8-6-25)15-21(35)36/h1-16H2,(H,23,29)(H,24,30)(H,31,32)(H,33,34)(H,35,36)(H,37,38)" A1C21 InChIKey InChI 1.06 PAUKHVCHLHGUBL-UHFFFAOYSA-N A1C21 SMILES_CANONICAL CACTVS 3.385 "OC(=O)CCC(=O)NCCNC(=O)CN1CCN(CCN(CCN(CC1)CC(O)=O)CC(O)=O)CC(O)=O" A1C21 SMILES CACTVS 3.385 "OC(=O)CCC(=O)NCCNC(=O)CN1CCN(CCN(CCN(CC1)CC(O)=O)CC(O)=O)CC(O)=O" A1C21 SMILES_CANONICAL "OpenEye OEToolkits" 3.1.0.0 "C1CN(CCN(CCN(CCN1CC(=O)NCCNC(=O)CCC(=O)O)CC(=O)O)CC(=O)O)CC(=O)O" A1C21 SMILES "OpenEye OEToolkits" 3.1.0.0 "C1CN(CCN(CCN(CCN1CC(=O)NCCNC(=O)CCC(=O)O)CC(=O)O)CC(=O)O)CC(=O)O" # loop_ _pdbx_chem_comp_identifier.comp_id _pdbx_chem_comp_identifier.type _pdbx_chem_comp_identifier.program _pdbx_chem_comp_identifier.program_version _pdbx_chem_comp_identifier.identifier A1C21 "SYSTEMATIC NAME" ACDLabs 14.52 "4-oxo-4-[(2-{2-[4,7,10-tris(carboxymethyl)-1,4,7,10-tetraazacyclododecan-1-yl]acetamido}ethyl)amino]butanoic acid" A1C21 "SYSTEMATIC NAME" "OpenEye OEToolkits" 3.1.0.0 "4-oxidanylidene-4-[2-[2-[4,7,10-tris(2-hydroxy-2-oxoethyl)-1,4,7,10-tetrazacyclododec-1-yl]ethanoylamino]ethylamino]butanoic acid" # loop_ _pdbx_chem_comp_audit.comp_id _pdbx_chem_comp_audit.action_type _pdbx_chem_comp_audit.date _pdbx_chem_comp_audit.processing_site A1C21 "Create component" 2025-12-09 RCSB A1C21 "Initial release" 2026-01-14 RCSB #