data_A1KR3 # _chem_comp.id A1KR3 _chem_comp.name "[[(2~{R},3~{S},4~{R},5~{R})-5-(2-azanyl-7-methyl-6-oxidanylidene-1~{H}-purin-9-yl)-3-methoxy-4-oxidanyl-oxolan-2-yl]methoxy-oxidanyl-phosphoryl] [[(2~{R},3~{R},4~{R},5~{R})-3-[[(2~{R},3~{S},4~{R},5~{R})-5-(2-azanyl-6-oxidanylidene-1~{H}-purin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methoxy-oxidanyl-phosphoryl]oxy-4-methylsulfanyl-5-[6-[(~{E})-(phenylmethylidene)amino]purin-9-yl]oxolan-2-yl]methoxy-oxidanyl-phosphoryl] hydrogen phosphate" _chem_comp.type non-polymer _chem_comp.pdbx_type HETAIN _chem_comp.formula "C40 H50 N15 O23 P4 S" _chem_comp.mon_nstd_parent_comp_id ? _chem_comp.pdbx_synonyms ? _chem_comp.pdbx_formal_charge 0 _chem_comp.pdbx_initial_date 2026-09-22 _chem_comp.pdbx_modified_date 2026-10-09 _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 1264.872 _chem_comp.one_letter_code ? _chem_comp.three_letter_code A1KR3 _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 Y _chem_comp.pdbx_model_coordinates_db_code 34DH _chem_comp.pdbx_subcomponent_list ? _chem_comp.pdbx_processing_site PDBE _chem_comp.pdbx_pcm ? _chem_comp.pdbx_comp_type ? # 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 A1KR3 N1 N1 N 0 1 N N N N N N 47.629 -5.493 28.178 ? ? ? N1 A1KR3 1 A1KR3 C2 C1 C 0 1 N N N N N N 48.791 -5.966 28.730 ? ? ? C2 A1KR3 2 A1KR3 N3 N2 N 0 1 N N N N N N 49.163 -7.252 28.705 ? ? ? N3 A1KR3 3 A1KR3 C4 C2 C 0 1 Y N N N N N 48.239 -8.057 28.086 ? ? ? C4 A1KR3 4 A1KR3 C5 C3 C 0 1 Y N N N N N 47.042 -7.645 27.509 ? ? ? C5 A1KR3 5 A1KR3 C6 C4 C 0 1 N N N N N N 46.653 -6.277 27.537 ? ? ? C6 A1KR3 6 A1KR3 O2A O1 O 0 1 N N N N N N 50.756 -10.655 30.163 ? ? ? O2A A1KR3 7 A1KR3 O3A O2 O 0 1 N N N N N N 48.885 -12.573 31.108 ? ? ? O3A A1KR3 8 A1KR3 O3B O3 O 0 1 N N N N N N 45.983 -15.273 33.678 ? ? ? O3B A1KR3 9 A1KR3 N2 N3 N 0 1 N N N N N N 49.557 -5.051 29.334 ? ? ? N2 A1KR3 10 A1KR3 O6 O4 O 0 1 N N N N N N 45.644 -5.754 27.059 ? ? ? O6 A1KR3 11 A1KR3 N7 N4 N 0 1 Y N N N N N 46.439 -8.768 26.964 ? ? ? N7 A1KR3 12 A1KR3 C7 C5 C 0 1 N N N N N N 45.132 -8.821 26.274 ? ? ? C7 A1KR3 13 A1KR3 C8 C6 C 0 1 Y N N N N N 47.211 -9.813 27.211 ? ? ? C8 A1KR3 14 A1KR3 N9 N5 N 0 1 Y N N N N N 48.314 -9.427 27.862 ? ? ? N9 A1KR3 15 A1KR3 C1A C7 C 0 1 N N R N N N 49.396 -10.305 28.288 ? ? ? C1A A1KR3 16 A1KR3 C2A C8 C 0 1 N N R N N N 49.414 -10.536 29.797 ? ? ? C2A A1KR3 17 A1KR3 C3A C9 C 0 1 N N S N N N 48.608 -11.830 29.931 ? ? ? C3A A1KR3 18 A1KR3 C4A C10 C 0 1 N N R N N N 49.064 -12.592 28.686 ? ? ? C4A A1KR3 19 A1KR3 C5A C11 C 0 1 N N N N N N 48.097 -13.645 28.182 ? ? ? C5A A1KR3 20 A1KR3 O4A O5 O 0 1 N N N N N N 49.237 -11.557 27.674 ? ? ? O4A A1KR3 21 A1KR3 P1 P1 P 0 1 N N N N N N 46.029 -13.521 26.535 ? ? ? P1 A1KR3 22 A1KR3 O11 O6 O 0 1 N N N N N N 44.825 -12.667 26.385 ? ? ? O11 A1KR3 23 A1KR3 O12 O7 O 0 1 N N N N N N 46.972 -13.826 25.429 ? ? ? O12 A1KR3 24 A1KR3 O13 O8 O 0 1 N N N N N N 45.505 -14.856 27.113 ? ? ? O13 A1KR3 25 A1KR3 O15 O9 O 0 1 N N N N N N 46.813 -13.018 27.838 ? ? ? O15 A1KR3 26 A1KR3 P2 P2 P 0 1 N N N N N N 45.579 -16.405 26.822 ? ? ? P2 A1KR3 27 A1KR3 O22 O10 O 0 1 N N N N N N 46.907 -16.918 27.204 ? ? ? O22 A1KR3 28 A1KR3 O21 O11 O 0 1 N N N N N N 44.996 -16.654 25.489 ? ? ? O21 A1KR3 29 A1KR3 O23 O12 O 0 1 N N N N N N 44.464 -16.805 27.884 ? ? ? O23 A1KR3 30 A1KR3 P3 P3 P 0 1 N N N N N N 44.337 -17.103 29.448 ? ? ? P3 A1KR3 31 A1KR3 O32 O13 O 0 1 N N N N N N 44.948 -18.422 29.749 ? ? ? O32 A1KR3 32 A1KR3 O31 O14 O 0 1 N N N N N N 42.941 -16.776 29.842 ? ? ? O31 A1KR3 33 A1KR3 O33 O15 O 0 1 N N N N N N 45.374 -16.048 30.030 ? ? ? O33 A1KR3 34 A1KR3 C5B C12 C 0 1 N N N N N N 44.883 -14.743 30.311 ? ? ? C5B A1KR3 35 A1KR3 C4B C13 C 0 1 N N R N N N 45.576 -14.301 31.565 ? ? ? C4B A1KR3 36 A1KR3 O4B O16 O 0 1 N N N N N N 45.459 -12.868 31.722 ? ? ? O4B A1KR3 37 A1KR3 C3B C14 C 0 1 N N R N N N 44.951 -14.976 32.771 ? ? ? C3B A1KR3 38 A1KR3 C2B C15 C 0 1 N N R N N N 44.071 -13.863 33.302 ? ? ? C2B A1KR3 39 A1KR3 S2B S1 S 0 1 N N N N N N 43.828 -13.975 35.257 ? ? ? S2B A1KR3 40 A1KR3 C1B C16 C 0 1 N N R N N N 44.977 -12.680 33.031 ? ? ? C1B A1KR3 41 A1KR3 N9C N6 N 0 1 Y N N N N N 44.307 -11.422 33.043 ? ? ? N9C A1KR3 42 A1KR3 C8C C17 C 0 1 Y N N N N N 43.124 -11.065 32.469 ? ? ? C8C A1KR3 43 A1KR3 N7C N7 N 0 1 Y N N N N N 42.830 -9.806 32.638 ? ? ? N7C A1KR3 44 A1KR3 C5C C18 C 0 1 Y N N N N N 43.896 -9.308 33.374 ? ? ? C5C A1KR3 45 A1KR3 C6C C19 C 0 1 Y N N N N N 44.183 -8.036 33.892 ? ? ? C6C A1KR3 46 A1KR3 N6C N8 N 0 1 N N N N N N 43.389 -6.969 33.710 ? ? ? N6C A1KR3 47 A1KR3 N1C N9 N 0 1 Y N N N N N 45.306 -7.898 34.619 ? ? ? N1C A1KR3 48 A1KR3 C2C C20 C 0 1 Y N N N N N 46.091 -8.962 34.795 ? ? ? C2C A1KR3 49 A1KR3 N3C N10 N 0 1 Y N N N N N 45.959 -10.199 34.327 ? ? ? N3C A1KR3 50 A1KR3 C4C C21 C 0 1 Y N N N N N 44.819 -10.299 33.629 ? ? ? C4C A1KR3 51 A1KR3 CO3A C22 C 0 0 N N N N N N 48.440 -11.946 32.294 ? ? ? CO3A A1KR3 52 A1KR3 CO2B C23 C 0 0 N N N N N N 42.749 -15.618 35.355 ? ? ? CO2B A1KR3 53 A1KR3 C54 C24 C 0 1 N N N N N N 43.656 -5.723 34.397 ? ? ? C54 A1KR3 54 A1KR3 C55 C25 C 0 1 Y N N N N N 42.804 -4.545 33.990 ? ? ? C55 A1KR3 55 A1KR3 C56 C26 C 0 1 Y N N N N N 43.363 -3.513 33.249 ? ? ? C56 A1KR3 56 A1KR3 C57 C27 C 0 1 Y N N N N N 42.609 -2.396 32.910 ? ? ? C57 A1KR3 57 A1KR3 C58 C28 C 0 1 Y N N N N N 41.304 -2.289 33.343 ? ? ? C58 A1KR3 58 A1KR3 C59 C29 C 0 1 Y N N N N N 40.751 -3.291 34.107 ? ? ? C59 A1KR3 59 A1KR3 C60 C30 C 0 1 Y N N N N N 41.499 -4.414 34.436 ? ? ? C60 A1KR3 60 A1KR3 P P4 P 0 1 N N N N N N 46.865 -16.459 34.299 ? ? ? P A1KR3 61 A1KR3 OP1 O17 O 0 1 N N N N N N 47.465 -15.959 35.568 ? ? ? OP1 A1KR3 62 A1KR3 OP2 O18 O 0 1 N N N N N N 46.116 -17.750 34.295 ? ? ? OP2 A1KR3 63 A1KR3 O55 O19 O 0 1 N N N N N N 48.060 -16.601 33.256 ? ? ? O55 A1KR3 64 A1KR3 C50 C31 C 0 1 N N N N N N 47.729 -16.890 31.901 ? ? ? C50 A1KR3 65 A1KR3 C45 C32 C 0 1 N N R N N N 48.978 -17.264 31.163 ? ? ? C45 A1KR3 66 A1KR3 O45 O20 O 0 1 N N N N N N 49.800 -18.083 32.028 ? ? ? O45 A1KR3 67 A1KR3 C35 C33 C 0 1 N N S N N N 48.724 -18.071 29.889 ? ? ? C35 A1KR3 68 A1KR3 O35 O21 O 0 1 N N N N N N 48.750 -17.107 28.841 ? ? ? O35 A1KR3 69 A1KR3 C25 C34 C 0 1 N N R N N N 49.819 -19.149 29.919 ? ? ? C25 A1KR3 70 A1KR3 O25 O22 O 0 1 N N N N N N 51.030 -18.791 29.287 ? ? ? O25 A1KR3 71 A1KR3 C15 C35 C 0 1 N N R N N N 50.086 -19.316 31.413 ? ? ? C15 A1KR3 72 A1KR3 N95 N11 N 0 1 Y N N N N N 49.290 -20.348 32.068 ? ? ? N95 A1KR3 73 A1KR3 C85 C36 C 0 1 Y N N N N N 47.962 -20.290 32.417 ? ? ? C85 A1KR3 74 A1KR3 N75 N12 N 0 1 Y N N N N N 47.534 -21.378 33.006 ? ? ? N75 A1KR3 75 A1KR3 C51 C37 C 0 1 Y N N N N N 48.656 -22.197 33.071 ? ? ? C51 A1KR3 76 A1KR3 C65 C38 C 0 1 N N N N N N 48.861 -23.493 33.587 ? ? ? C65 A1KR3 77 A1KR3 O65 O23 O 0 1 N N N N N N 47.899 -24.212 34.158 ? ? ? O65 A1KR3 78 A1KR3 N15 N13 N 0 1 N N N N N N 50.106 -24.027 33.481 ? ? ? N15 A1KR3 79 A1KR3 C28 C39 C 0 1 N N N N N N 51.067 -23.301 32.896 ? ? ? C28 A1KR3 80 A1KR3 N28 N14 N 0 1 N N N N N N 52.310 -23.917 32.826 ? ? ? N28 A1KR3 81 A1KR3 N35 N15 N 0 1 N N N N N N 50.990 -22.079 32.376 ? ? ? N35 A1KR3 82 A1KR3 C48 C40 C 0 1 Y N N N N N 49.748 -21.572 32.497 ? ? ? C48 A1KR3 83 A1KR3 H1 H1 H 0 1 N N N N N N 47.461 -4.509 28.236 ? ? ? H1 A1KR3 84 A1KR3 H2 H2 H 0 1 N N N N N N 50.818 -10.801 31.100 ? ? ? H2 A1KR3 85 A1KR3 H3 H3 H 0 1 N N N N N N 50.414 -5.326 29.771 ? ? ? H3 A1KR3 86 A1KR3 H4 H4 H 0 1 N N N N N N 49.273 -4.092 29.349 ? ? ? H4 A1KR3 87 A1KR3 H5 H5 H 0 1 N N N N N N 44.711 -7.807 26.206 ? ? ? H5 A1KR3 88 A1KR3 H6 H6 H 0 1 N N N N N N 45.268 -9.230 25.262 ? ? ? H6 A1KR3 89 A1KR3 H7 H7 H 0 1 N N N N N N 44.444 -9.466 26.841 ? ? ? H7 A1KR3 90 A1KR3 H8 H8 H 0 1 N N N N N N 46.984 -10.830 26.928 ? ? ? H8 A1KR3 91 A1KR3 H9 H9 H 0 1 N N N N N N 50.359 -9.862 27.995 ? ? ? H9 A1KR3 92 A1KR3 H10 H10 H 0 1 N N N N N N 48.907 -9.711 30.319 ? ? ? H10 A1KR3 93 A1KR3 H11 H11 H 0 1 N N N N N N 47.535 -11.603 29.850 ? ? ? H11 A1KR3 94 A1KR3 H12 H12 H 0 1 N N N N N N 50.032 -13.069 28.898 ? ? ? H12 A1KR3 95 A1KR3 H13 H13 H 0 1 N N N N N N 47.937 -14.399 28.967 ? ? ? H13 A1KR3 96 A1KR3 H14 H14 H 0 1 N N N N N N 48.518 -14.129 27.289 ? ? ? H14 A1KR3 97 A1KR3 H15 H15 H 0 1 N N N N N N 44.764 -12.359 25.488 ? ? ? H15 A1KR3 98 A1KR3 H16 H16 H 0 1 N N N N N N 47.281 -17.402 26.477 ? ? ? H16 A1KR3 99 A1KR3 H17 H17 H 0 1 N N N N N N 42.554 -17.521 30.287 ? ? ? H17 A1KR3 100 A1KR3 H18 H18 H 0 1 N N N N N N 45.119 -14.059 29.482 ? ? ? H18 A1KR3 101 A1KR3 H19 H19 H 0 1 N N N N N N 43.794 -14.769 30.465 ? ? ? H19 A1KR3 102 A1KR3 H20 H20 H 0 1 N N N N N N 46.637 -14.585 31.509 ? ? ? H20 A1KR3 103 A1KR3 H21 H21 H 0 1 N N N N N N 44.359 -15.856 32.480 ? ? ? H21 A1KR3 104 A1KR3 H22 H22 H 0 1 N N N N N N 43.080 -13.798 32.828 ? ? ? H22 A1KR3 105 A1KR3 H23 H23 H 0 1 N N N N N N 45.804 -12.683 33.756 ? ? ? H23 A1KR3 106 A1KR3 H24 H24 H 0 1 N N N N N N 42.493 -11.755 31.928 ? ? ? H24 A1KR3 107 A1KR3 H25 H25 H 0 1 N N N N N N 46.963 -8.793 35.409 ? ? ? H25 A1KR3 108 A1KR3 H26 H26 H 0 1 N N N N N N 48.689 -12.578 33.159 ? ? ? H26 A1KR3 109 A1KR3 H27 H27 H 0 1 N N N N N N 48.934 -10.969 32.400 ? ? ? H27 A1KR3 110 A1KR3 H28 H28 H 0 1 N N N N N N 47.350 -11.803 32.246 ? ? ? H28 A1KR3 111 A1KR3 H29 H29 H 0 1 N N N N N N 42.513 -15.840 36.406 ? ? ? H29 A1KR3 112 A1KR3 H30 H30 H 0 1 N N N N N N 41.815 -15.477 34.791 ? ? ? H30 A1KR3 113 A1KR3 H31 H31 H 0 1 N N N N N N 43.316 -16.455 34.922 ? ? ? H31 A1KR3 114 A1KR3 H32 H32 H 0 1 N N N N N N 44.420 -5.641 35.156 ? ? ? H32 A1KR3 115 A1KR3 H33 H33 H 0 1 N N N N N N 44.394 -3.579 32.933 ? ? ? H33 A1KR3 116 A1KR3 H34 H34 H 0 1 N N N N N N 43.045 -1.612 32.308 ? ? ? H34 A1KR3 117 A1KR3 H35 H35 H 0 1 N N N N N N 40.717 -1.420 33.083 ? ? ? H35 A1KR3 118 A1KR3 H36 H36 H 0 1 N N N N N N 39.731 -3.204 34.452 ? ? ? H36 A1KR3 119 A1KR3 H37 H37 H 0 1 N N N N N N 41.060 -5.191 35.044 ? ? ? H37 A1KR3 120 A1KR3 H38 H38 H 0 1 N N N N N N 47.281 -16.573 36.269 ? ? ? H38 A1KR3 121 A1KR3 H39 H39 H 0 1 N N N N N N 47.277 -16.002 31.434 ? ? ? H39 A1KR3 122 A1KR3 H40 H40 H 0 1 N N N N N N 47.015 -17.726 31.866 ? ? ? H40 A1KR3 123 A1KR3 H41 H41 H 0 1 N N N N N N 49.523 -16.347 30.894 ? ? ? H41 A1KR3 124 A1KR3 H42 H42 H 0 1 N N N N N N 47.738 -18.553 29.953 ? ? ? H42 A1KR3 125 A1KR3 H43 H43 H 0 1 N N N N N N 48.021 -16.506 28.945 ? ? ? H43 A1KR3 126 A1KR3 H44 H44 H 0 1 N N N N N N 49.419 -20.088 29.509 ? ? ? H44 A1KR3 127 A1KR3 H45 H45 H 0 1 N N N N N N 51.647 -19.511 29.352 ? ? ? H45 A1KR3 128 A1KR3 H46 H46 H 0 1 N N N N N N 51.152 -19.554 31.543 ? ? ? H46 A1KR3 129 A1KR3 H47 H47 H 0 1 N N N N N N 47.334 -19.433 32.225 ? ? ? H47 A1KR3 130 A1KR3 H48 H48 H 0 1 N N N N N N 50.300 -24.943 33.832 ? ? ? H48 A1KR3 131 A1KR3 H49 H49 H 0 1 N N N N N N 53.081 -23.441 32.403 ? ? ? H49 A1KR3 132 A1KR3 H50 H50 H 0 1 N N N N N N 52.434 -24.836 33.199 ? ? ? H50 A1KR3 133 # 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 A1KR3 O12 P1 DOUB N N 1 A1KR3 O21 P2 DOUB N N 2 A1KR3 C7 N7 SING N N 3 A1KR3 O11 P1 SING N N 4 A1KR3 P1 O13 SING N N 5 A1KR3 P1 O15 SING N N 6 A1KR3 P2 O13 SING N N 7 A1KR3 P2 O22 SING N N 8 A1KR3 P2 O23 SING N N 9 A1KR3 N7 C8 SING Y N 10 A1KR3 N7 C5 SING Y N 11 A1KR3 O6 C6 DOUB N N 12 A1KR3 C8 N9 DOUB Y N 13 A1KR3 C5 C6 SING N N 14 A1KR3 C5 C4 DOUB Y N 15 A1KR3 C6 N1 SING N N 16 A1KR3 O4A C1A SING N N 17 A1KR3 O4A C4A SING N N 18 A1KR3 O15 C5A SING N N 19 A1KR3 N9 C4 SING Y N 20 A1KR3 N9 C1A SING N N 21 A1KR3 O23 P3 SING N N 22 A1KR3 C4 N3 SING N N 23 A1KR3 N1 C2 SING N N 24 A1KR3 C5A C4A SING N N 25 A1KR3 C1A C2A SING N N 26 A1KR3 C4A C3A SING N N 27 A1KR3 N3 C2 DOUB N N 28 A1KR3 C2 N2 SING N N 29 A1KR3 O35 C35 SING N N 30 A1KR3 O25 C25 SING N N 31 A1KR3 P3 O32 DOUB N N 32 A1KR3 P3 O31 SING N N 33 A1KR3 P3 O33 SING N N 34 A1KR3 C2A C3A SING N N 35 A1KR3 C2A O2A SING N N 36 A1KR3 C35 C25 SING N N 37 A1KR3 C35 C45 SING N N 38 A1KR3 C25 C15 SING N N 39 A1KR3 C3A O3A SING N N 40 A1KR3 O33 C5B SING N N 41 A1KR3 C5B C4B SING N N 42 A1KR3 O3A CO3A SING N N 43 A1KR3 C45 C50 SING N N 44 A1KR3 C45 O45 SING N N 45 A1KR3 C15 O45 SING N N 46 A1KR3 C15 N95 SING N N 47 A1KR3 C4B O4B SING N N 48 A1KR3 C4B C3B SING N N 49 A1KR3 O4B C1B SING N N 50 A1KR3 C50 O55 SING N N 51 A1KR3 N95 C85 SING Y N 52 A1KR3 N95 C48 SING Y N 53 A1KR3 N35 C48 SING N N 54 A1KR3 N35 C28 DOUB N N 55 A1KR3 C85 N75 DOUB Y N 56 A1KR3 C8C N7C DOUB Y N 57 A1KR3 C8C N9C SING Y N 58 A1KR3 C48 C51 DOUB Y N 59 A1KR3 N7C C5C SING Y N 60 A1KR3 C3B C2B SING N N 61 A1KR3 C3B O3B SING N N 62 A1KR3 N28 C28 SING N N 63 A1KR3 C28 N15 SING N N 64 A1KR3 C57 C56 DOUB Y N 65 A1KR3 C57 C58 SING Y N 66 A1KR3 N75 C51 SING Y N 67 A1KR3 C1B N9C SING N N 68 A1KR3 C1B C2B SING N N 69 A1KR3 N9C C4C SING Y N 70 A1KR3 C51 C65 SING N N 71 A1KR3 C56 C55 SING Y N 72 A1KR3 O55 P SING N N 73 A1KR3 C2B S2B SING N N 74 A1KR3 C58 C59 DOUB Y N 75 A1KR3 C5C C4C DOUB Y N 76 A1KR3 C5C C6C SING Y N 77 A1KR3 N15 C65 SING N N 78 A1KR3 C65 O65 DOUB N N 79 A1KR3 C4C N3C SING Y N 80 A1KR3 O3B P SING N N 81 A1KR3 N6C C6C SING N N 82 A1KR3 N6C C54 DOUB N N 83 A1KR3 C6C N1C DOUB Y N 84 A1KR3 C55 C54 SING N N 85 A1KR3 C55 C60 DOUB Y N 86 A1KR3 C59 C60 SING Y N 87 A1KR3 OP2 P DOUB N N 88 A1KR3 P OP1 SING N N 89 A1KR3 N3C C2C DOUB Y N 90 A1KR3 N1C C2C SING Y N 91 A1KR3 S2B CO2B SING N N 92 A1KR3 N1 H1 SING N N 93 A1KR3 O2A H2 SING N N 94 A1KR3 N2 H3 SING N N 95 A1KR3 N2 H4 SING N N 96 A1KR3 C7 H5 SING N N 97 A1KR3 C7 H6 SING N N 98 A1KR3 C7 H7 SING N N 99 A1KR3 C8 H8 SING N N 100 A1KR3 C1A H9 SING N N 101 A1KR3 C2A H10 SING N N 102 A1KR3 C3A H11 SING N N 103 A1KR3 C4A H12 SING N N 104 A1KR3 C5A H13 SING N N 105 A1KR3 C5A H14 SING N N 106 A1KR3 O11 H15 SING N N 107 A1KR3 O22 H16 SING N N 108 A1KR3 O31 H17 SING N N 109 A1KR3 C5B H18 SING N N 110 A1KR3 C5B H19 SING N N 111 A1KR3 C4B H20 SING N N 112 A1KR3 C3B H21 SING N N 113 A1KR3 C2B H22 SING N N 114 A1KR3 C1B H23 SING N N 115 A1KR3 C8C H24 SING N N 116 A1KR3 C2C H25 SING N N 117 A1KR3 CO3A H26 SING N N 118 A1KR3 CO3A H27 SING N N 119 A1KR3 CO3A H28 SING N N 120 A1KR3 CO2B H29 SING N N 121 A1KR3 CO2B H30 SING N N 122 A1KR3 CO2B H31 SING N N 123 A1KR3 C54 H32 SING N N 124 A1KR3 C56 H33 SING N N 125 A1KR3 C57 H34 SING N N 126 A1KR3 C58 H35 SING N N 127 A1KR3 C59 H36 SING N N 128 A1KR3 C60 H37 SING N N 129 A1KR3 OP1 H38 SING N N 130 A1KR3 C50 H39 SING N N 131 A1KR3 C50 H40 SING N N 132 A1KR3 C45 H41 SING N N 133 A1KR3 C35 H42 SING N N 134 A1KR3 O35 H43 SING N N 135 A1KR3 C25 H44 SING N N 136 A1KR3 O25 H45 SING N N 137 A1KR3 C15 H46 SING N N 138 A1KR3 C85 H47 SING N N 139 A1KR3 N15 H48 SING N N 140 A1KR3 N28 H49 SING N N 141 A1KR3 N28 H50 SING N N 142 # 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 A1KR3 InChI InChI 1.06 "InChI=1S/C40H50N15O23P4S/c1-52-16-55(33-23(52)35(60)51-40(42)49-33)37-26(58)27(69-2)19(74-37)11-71-80(63,64)77-82(67,68)78-81(65,66)72-12-20-28(29(83-3)38(75-20)53-14-46-21-30(44-13-45-31(21)53)43-9-17-7-5-4-6-8-17)76-79(61,62)70-10-18-24(56)25(57)36(73-18)54-15-47-22-32(54)48-39(41)50-34(22)59/h4-9,13-16,18-20,24-29,36-38,56-58H,10-12H2,1-3H3,(H,61,62)(H,63,64)(H,65,66)(H,67,68)(H3,41,48,50,59)(H3,42,49,51,60)/b43-9+/t18-,19-,20-,24-,25-,26-,27-,28-,29-,36-,37-,38-/m1/s1" A1KR3 InChIKey InChI 1.06 RGGFCCGAIXRNOQ-DJAMVMRISA-N A1KR3 SMILES_CANONICAL CACTVS 3.385 "CO[C@H]1[C@@H](O)[C@@H](O[C@@H]1CO[P](O)(=O)O[P](O)(=O)O[P](O)(=O)OC[C@H]2O[C@H]([C@H](SC)[C@@H]2O[P](O)(=O)OC[C@H]3O[C@H]([C@H](O)[C@@H]3O)n4cnc5C(=O)NC(=Nc45)N)n6cnc7c(ncnc67)N=Cc8ccccc8)[n]9cn(C)c%10C(=O)NC(=Nc9%10)N" A1KR3 SMILES CACTVS 3.385 "CO[CH]1[CH](O)[CH](O[CH]1CO[P](O)(=O)O[P](O)(=O)O[P](O)(=O)OC[CH]2O[CH]([CH](SC)[CH]2O[P](O)(=O)OC[CH]3O[CH]([CH](O)[CH]3O)n4cnc5C(=O)NC(=Nc45)N)n6cnc7c(ncnc67)N=Cc8ccccc8)[n]9cn(C)c%10C(=O)NC(=Nc9%10)N" A1KR3 SMILES_CANONICAL "OpenEye OEToolkits" 2.0.7 "CN1C=[N](C2=C1C(=O)NC(=N2)N)[C@H]3[C@@H]([C@@H]([C@H](O3)COP(=O)(O)OP(=O)(O)OP(=O)(O)OC[C@@H]4[C@H]([C@H]([C@@H](O4)n5cnc6c5ncnc6/N=C/c7ccccc7)SC)OP(=O)(O)OC[C@@H]8[C@H]([C@H]([C@@H](O8)n9cnc1c9N=C(NC1=O)N)O)O)OC)O" A1KR3 SMILES "OpenEye OEToolkits" 2.0.7 "CN1C=[N](C2=C1C(=O)NC(=N2)N)C3C(C(C(O3)COP(=O)(O)OP(=O)(O)OP(=O)(O)OCC4C(C(C(O4)n5cnc6c5ncnc6N=Cc7ccccc7)SC)OP(=O)(O)OCC8C(C(C(O8)n9cnc1c9N=C(NC1=O)N)O)O)OC)O" # _pdbx_chem_comp_identifier.comp_id A1KR3 _pdbx_chem_comp_identifier.type "SYSTEMATIC NAME" _pdbx_chem_comp_identifier.program "OpenEye OEToolkits" _pdbx_chem_comp_identifier.program_version 2.0.7 _pdbx_chem_comp_identifier.identifier "[[(2~{R},3~{S},4~{R},5~{R})-5-(2-azanyl-7-methyl-6-oxidanylidene-1~{H}-purin-9-yl)-3-methoxy-4-oxidanyl-oxolan-2-yl]methoxy-oxidanyl-phosphoryl] [[(2~{R},3~{R},4~{R},5~{R})-3-[[(2~{R},3~{S},4~{R},5~{R})-5-(2-azanyl-6-oxidanylidene-1~{H}-purin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methoxy-oxidanyl-phosphoryl]oxy-4-methylsulfanyl-5-[6-[(~{E})-(phenylmethylidene)amino]purin-9-yl]oxolan-2-yl]methoxy-oxidanyl-phosphoryl] hydrogen phosphate" # loop_ _pdbx_chem_comp_audit.comp_id _pdbx_chem_comp_audit.action_type _pdbx_chem_comp_audit.date _pdbx_chem_comp_audit.processing_site A1KR3 "Create component" 2026-09-22 PDBE A1KR3 "Initial release" 2026-10-14 RCSB #