data_HEC # _chem_comp.id HEC _chem_comp.name "HEME C" _chem_comp.type NON-POLYMER _chem_comp.pdbx_type HETAIN _chem_comp.formula "C34 H34 Fe N4 O4" _chem_comp.mon_nstd_parent_comp_id ? _chem_comp.pdbx_synonyms ? _chem_comp.pdbx_formal_charge 0 _chem_comp.pdbx_initial_date 1999-07-08 _chem_comp.pdbx_modified_date 2025-01-13 _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 618.503 _chem_comp.one_letter_code ? _chem_comp.three_letter_code HEC _chem_comp.pdbx_model_coordinates_details ? _chem_comp.pdbx_model_coordinates_missing_flag N _chem_comp.pdbx_ideal_coordinates_details "not provided" _chem_comp.pdbx_ideal_coordinates_missing_flag Y _chem_comp.pdbx_model_coordinates_db_code 1DY7 _chem_comp.pdbx_subcomponent_list ? _chem_comp.pdbx_processing_site RCSB _chem_comp.pdbx_pcm Y # 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_backbone_atom_flag _chem_comp_atom.pdbx_n_terminal_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 HEC FE FE FE 0 0 N N N N N N 15.522 27.935 77.126 ? ? ? FE HEC 1 HEC CHA CHA C 0 1 N N N N N N 15.607 30.470 74.811 ? ? ? CHA HEC 2 HEC CHB CHB C 0 1 N N N N N N 18.890 27.534 76.792 ? ? ? CHB HEC 3 HEC CHC CHC C 0 1 N N N N N N 15.474 25.549 79.610 ? ? ? CHC HEC 4 HEC CHD CHD C 0 1 N N N N N N 12.137 28.061 77.181 ? ? ? CHD HEC 5 HEC NA "N A" N 0 1 Y N N N N N 16.951 28.824 76.033 ? ? ? NA HEC 6 HEC C1A C1A C 0 1 Y N N N N N 16.807 29.877 75.150 ? ? ? C1A HEC 7 HEC C2A C2A C 0 1 Y N N N N N 18.105 30.253 74.630 ? ? ? C2A HEC 8 HEC C3A C3A C 0 1 Y N N N N N 19.010 29.435 75.177 ? ? ? C3A HEC 9 HEC C4A C4A C 0 1 Y N N N N N 18.303 28.522 76.041 ? ? ? C4A HEC 10 HEC CMA CMA C 0 1 N N N N N N 20.541 29.397 74.959 ? ? ? CMA HEC 11 HEC CAA CAA C 0 1 N N N N N N 18.314 31.394 73.613 ? ? ? CAA HEC 12 HEC CBA CBA C 0 1 N N N N N N 18.118 30.944 72.150 ? ? ? CBA HEC 13 HEC CGA CGA C 0 1 N N N N N N 17.936 32.093 71.184 ? ? ? CGA HEC 14 HEC O1A O1A O 0 1 N N N N N N 17.984 31.796 69.960 ? ? ? O1A HEC 15 HEC O2A O2A O 0 1 N N N N N N 17.746 33.219 71.713 ? ? ? O2A HEC 16 HEC NB "N B" N 0 1 Y N N N N N 16.893 26.771 78.005 ? ? ? NB HEC 17 HEC C1B C1B C 0 1 Y N N N N N 18.247 26.743 77.714 ? ? ? C1B HEC 18 HEC C2B C2B C 0 1 Y N N N N N 18.887 25.778 78.560 ? ? ? C2B HEC 19 HEC C3B C3B C 0 1 Y N N N N N 17.936 25.254 79.345 ? ? ? C3B HEC 20 HEC C4B C4B C 0 1 Y N N N N N 16.682 25.864 79.016 ? ? ? C4B HEC 21 HEC CMB CMB C 0 1 N N N N N N 20.402 25.470 78.518 ? ? ? CMB HEC 22 HEC CAB CAB C 0 1 N N N N N N 18.176 24.150 80.430 ? ? ? CAB HEC 23 HEC CBB CBB C 0 1 N N N N N N 18.918 24.683 81.499 ? ? ? CBB HEC 24 HEC NC "N C" N 0 1 Y N N N N N 14.094 27.011 78.184 ? ? ? NC HEC 25 HEC C1C C1C C 0 1 Y N N N N N 14.271 26.063 79.176 ? ? ? C1C HEC 26 HEC C2C C2C C 0 1 Y N N N N N 12.975 25.602 79.660 ? ? ? C2C HEC 27 HEC C3C C3C C 0 1 Y N N N N N 12.061 26.311 78.989 ? ? ? C3C HEC 28 HEC C4C C4C C 0 1 Y N N N N N 12.718 27.173 78.056 ? ? ? C4C HEC 29 HEC CMC CMC C 0 1 N N N N N N 12.779 24.528 80.747 ? ? ? CMC HEC 30 HEC CAC CAC C 0 1 N N N N N N 10.494 26.156 79.124 ? ? ? CAC HEC 31 HEC CBC CBC C 0 1 N N N N N N 9.970 26.773 80.223 ? ? ? CBC HEC 32 HEC ND "N D" N 0 1 Y N N N N N 14.147 29.048 76.172 ? ? ? ND HEC 33 HEC C1D C1D C 0 1 Y N N N N N 12.776 28.935 76.326 ? ? ? C1D HEC 34 HEC C2D C2D C 0 1 Y N N N N N 12.141 29.896 75.454 ? ? ? C2D HEC 35 HEC C3D C3D C 0 1 Y N N N N N 13.089 30.565 74.804 ? ? ? C3D HEC 36 HEC C4D C4D C 0 1 Y N N N N N 14.375 30.053 75.264 ? ? ? C4D HEC 37 HEC CMD CMD C 0 1 N N N N N N 10.600 30.042 75.374 ? ? ? CMD HEC 38 HEC CAD CAD C 0 1 N N N N N N 12.956 31.685 73.755 ? ? ? CAD HEC 39 HEC CBD CBD C 0 1 N N N N N N 13.630 33.026 74.020 ? ? ? CBD HEC 40 HEC CGD CGD C 0 1 N N N N N N 12.812 33.988 74.834 ? ? ? CGD HEC 41 HEC O1D O1D O 0 1 N N N N N N 12.179 33.453 75.789 ? ? ? O1D HEC 42 HEC O2D O2D O 0 1 N N N N N N 12.826 35.208 74.518 ? ? ? O2D HEC 43 HEC HHA HHA H 0 1 N N N N N N 15.634 31.337 74.130 ? ? ? HHA HEC 44 HEC HHB HHB H 0 1 N N N N N N 19.969 27.361 76.642 ? ? ? HHB HEC 45 HEC HHC HHC H 0 1 N N N N N N 15.469 24.856 80.468 ? ? ? HHC HEC 46 HEC HHD HHD H 0 1 N N N N N N 11.034 28.073 77.162 ? ? ? HHD HEC 47 HEC HMA1 1HMA H 0 0 N N N N N N 21.295 28.714 75.415 ? ? ? HMA1 HEC 48 HEC HMA2 2HMA H 0 0 N N N N N N 20.681 29.301 73.857 ? ? ? HMA2 HEC 49 HEC HMA3 3HMA H 0 0 N N N N N N 20.898 30.428 75.184 ? ? ? HMA3 HEC 50 HEC HAA1 1HAA H 0 0 N N N N N N 17.659 32.264 73.852 ? ? ? HAA1 HEC 51 HEC HAA2 2HAA H 0 0 N N N N N N 19.311 31.872 73.751 ? ? ? HAA2 HEC 52 HEC HBA1 1HBA H 0 0 N N N N N N 18.955 30.284 71.824 ? ? ? HBA1 HEC 53 HEC HBA2 2HBA H 0 0 N N N N N N 17.271 30.222 72.069 ? ? ? HBA2 HEC 54 HEC H2A H2A H 0 1 N N N N N N 17.631 33.940 71.106 ? ? ? H2A HEC 55 HEC HMB1 1HMB H 0 0 N N N N N N 20.899 24.719 79.175 ? ? ? HMB1 HEC 56 HEC HMB2 2HMB H 0 0 N N N N N N 20.654 25.203 77.465 ? ? ? HMB2 HEC 57 HEC HMB3 3HMB H 0 0 N N N N N N 20.938 26.437 78.658 ? ? ? HMB3 HEC 58 HEC HAB HAB H 0 1 N N N N N N 17.852 23.095 80.440 ? ? ? HAB HEC 59 HEC HBB1 1HBB H 0 0 N N N N N N 19.088 23.897 82.271 ? ? ? HBB1 HEC 60 HEC HBB2 2HBB H 0 0 N N N N N N 19.872 25.147 81.156 ? ? ? HBB2 HEC 61 HEC HBB3 3HBB H 0 0 N N N N N N 18.439 25.594 81.927 ? ? ? HBB3 HEC 62 HEC HMC1 1HMC H 0 0 N N N N N N 11.788 24.175 81.117 ? ? ? HMC1 HEC 63 HEC HMC2 2HMC H 0 0 N N N N N N 13.340 23.624 80.413 ? ? ? HMC2 HEC 64 HEC HMC3 3HMC H 0 0 N N N N N N 13.357 24.861 81.639 ? ? ? HMC3 HEC 65 HEC HAC HAC H 0 1 N N N N N N 9.782 25.629 78.466 ? ? ? HAC HEC 66 HEC HBC1 1HBC H 0 0 N N N N N N 8.864 26.663 80.318 ? ? ? HBC1 HEC 67 HEC HBC2 2HBC H 0 0 N N N N N N 10.480 26.422 81.150 ? ? ? HBC2 HEC 68 HEC HBC3 3HBC H 0 0 N N N N N N 10.260 27.849 80.244 ? ? ? HBC3 HEC 69 HEC HMD1 1HMD H 0 0 N N N N N N 10.109 30.783 74.701 ? ? ? HMD1 HEC 70 HEC HMD2 2HMD H 0 0 N N N N N N 10.175 29.038 75.139 ? ? ? HMD2 HEC 71 HEC HMD3 3HMD H 0 0 N N N N N N 10.221 30.219 76.407 ? ? ? HMD3 HEC 72 HEC HAD1 1HAD H 0 0 N N N N N N 13.302 31.297 72.768 ? ? ? HAD1 HEC 73 HEC HAD2 2HAD H 0 0 N N N N N N 11.873 31.860 73.551 ? ? ? HAD2 HEC 74 HEC HBD1 1HBD H 0 0 N N N N N N 14.628 32.871 74.491 ? ? ? HBD1 HEC 75 HEC HBD2 2HBD H 0 0 N N N N N N 13.942 33.499 73.059 ? ? ? HBD2 HEC 76 HEC H2D H2D H 0 1 N N N N N N 12.308 35.816 75.032 ? ? ? H2D HEC 77 # 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 HEC FE NA SING N N 1 HEC FE NB SING N N 2 HEC FE NC SING N N 3 HEC FE ND SING N N 4 HEC CHA C1A DOUB N N 5 HEC CHA C4D SING N N 6 HEC CHA HHA SING N N 7 HEC CHB C4A DOUB N N 8 HEC CHB C1B SING N N 9 HEC CHB HHB SING N N 10 HEC CHC C4B DOUB N N 11 HEC CHC C1C SING N N 12 HEC CHC HHC SING N N 13 HEC CHD C4C DOUB N N 14 HEC CHD C1D SING N N 15 HEC CHD HHD SING N N 16 HEC NA C1A SING Y N 17 HEC NA C4A SING Y N 18 HEC C1A C2A SING Y N 19 HEC C2A C3A DOUB Y N 20 HEC C2A CAA SING N N 21 HEC C3A C4A SING Y N 22 HEC C3A CMA SING N N 23 HEC CMA HMA1 SING N N 24 HEC CMA HMA2 SING N N 25 HEC CMA HMA3 SING N N 26 HEC CAA CBA SING N N 27 HEC CAA HAA1 SING N N 28 HEC CAA HAA2 SING N N 29 HEC CBA CGA SING N N 30 HEC CBA HBA1 SING N N 31 HEC CBA HBA2 SING N N 32 HEC CGA O1A DOUB N N 33 HEC CGA O2A SING N N 34 HEC O2A H2A SING N N 35 HEC NB C1B SING Y N 36 HEC NB C4B SING Y N 37 HEC C1B C2B DOUB Y N 38 HEC C2B C3B SING Y N 39 HEC C2B CMB SING N N 40 HEC C3B C4B SING Y N 41 HEC C3B CAB DOUB N E 42 HEC CMB HMB1 SING N N 43 HEC CMB HMB2 SING N N 44 HEC CMB HMB3 SING N N 45 HEC CAB CBB SING N N 46 HEC CAB HAB SING N N 47 HEC CBB HBB1 SING N N 48 HEC CBB HBB2 SING N N 49 HEC CBB HBB3 SING N N 50 HEC NC C1C SING Y N 51 HEC NC C4C SING Y N 52 HEC C1C C2C DOUB Y N 53 HEC C2C C3C SING Y N 54 HEC C2C CMC SING N N 55 HEC C3C C4C SING Y N 56 HEC C3C CAC DOUB N E 57 HEC CMC HMC1 SING N N 58 HEC CMC HMC2 SING N N 59 HEC CMC HMC3 SING N N 60 HEC CAC CBC SING N N 61 HEC CAC HAC SING N N 62 HEC CBC HBC1 SING N N 63 HEC CBC HBC2 SING N N 64 HEC CBC HBC3 SING N N 65 HEC ND C1D SING Y N 66 HEC ND C4D SING Y N 67 HEC C1D C2D DOUB Y N 68 HEC C2D C3D SING Y N 69 HEC C2D CMD SING N N 70 HEC C3D C4D DOUB Y N 71 HEC C3D CAD SING N N 72 HEC CMD HMD1 SING N N 73 HEC CMD HMD2 SING N N 74 HEC CMD HMD3 SING N N 75 HEC CAD CBD SING N N 76 HEC CAD HAD1 SING N N 77 HEC CAD HAD2 SING N N 78 HEC CBD CGD SING N N 79 HEC CBD HBD1 SING N N 80 HEC CBD HBD2 SING N N 81 HEC CGD O1D DOUB N N 82 HEC CGD O2D SING N N 83 HEC O2D H2D SING N N 84 # 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 HEC SMILES ACDLabs 10.04 "O=C(O)CCC1=C(C2=CC6=C(C(=C/C)\C5=CC4=C(C(\C3=Cc7c(c(c8C=C1N2[Fe](N34)(N56)n78)CCC(=O)O)C)=C/C)C)C)C" HEC SMILES_CANONICAL CACTVS 3.341 "C\C=C1/C(=C2C=C3N4C(=Cc5n6c(C=C7N8C(=C(C)\C7=C/C)C=C1N2[Fe@@]468)c(C)c5CCC(O)=O)C(=C3C)CCC(O)=O)C" HEC SMILES CACTVS 3.341 "CC=C1C(=C2C=C3N4C(=Cc5n6c(C=C7N8C(=C(C)C7=CC)C=C1N2[Fe]468)c(C)c5CCC(O)=O)C(=C3C)CCC(O)=O)C" HEC SMILES_CANONICAL "OpenEye OEToolkits" 1.5.0 "CC=C1C(=C2C=C3C(=CC)C(=C4N3[Fe]56N2C1=Cc7n5c(c(c7C)CCC(=O)O)C=C8N6C(=C4)C(=C8CCC(=O)O)C)C)C" HEC SMILES "OpenEye OEToolkits" 1.5.0 "CC=C1C(=C2C=C3C(=CC)C(=C4N3[Fe]56N2C1=Cc7n5c(c(c7C)CCC(=O)O)C=C8N6C(=C4)C(=C8CCC(=O)O)C)C)C" HEC InChI InChI 1.03 "InChI=1S/C34H34N4O4.Fe/c1-7-21-17(3)25-13-26-19(5)23(9-11-33(39)40)31(37-26)16-32-24(10-12-34(41)42)20(6)28(38-32)15-30-22(8-2)18(4)27(36-30)14-29(21)35-25;/h7-8,13-16H,9-12H2,1-6H3,(H,39,40)(H,41,42);/q-4;+4/b21-7?,22-8?,26-13-,29-14-,30-15-,31-16-;" HEC InChIKey InChI 1.03 HXQIYSLZKNYNMH-LJNAALQVSA-N # _pdbx_chem_comp_identifier.comp_id HEC _pdbx_chem_comp_identifier.type "SYSTEMATIC NAME" _pdbx_chem_comp_identifier.program ACDLabs _pdbx_chem_comp_identifier.program_version 10.04 _pdbx_chem_comp_identifier.identifier "{3,3'-[(7E,12E)-7,12-diethylidene-3,8,13,17-tetramethyl-7,12,22,24-tetrahydroporphyrin-2,18-diyl-kappa~4~N~21~,N~22~,N~23~,N~24~]dipropanoato(4-)}iron" # loop_ _pdbx_chem_comp_audit.comp_id _pdbx_chem_comp_audit.action_type _pdbx_chem_comp_audit.date _pdbx_chem_comp_audit.processing_site HEC "Create component" 1999-07-08 RCSB HEC "Modify descriptor" 2011-06-04 RCSB HEC "Modify PCM" 2024-09-27 PDBE HEC "Modify PCM" 2025-01-13 PDBE # loop_ _pdbx_chem_comp_pcm.pcm_id _pdbx_chem_comp_pcm.comp_id _pdbx_chem_comp_pcm.modified_residue_id _pdbx_chem_comp_pcm.type _pdbx_chem_comp_pcm.category _pdbx_chem_comp_pcm.position _pdbx_chem_comp_pcm.polypeptide_position _pdbx_chem_comp_pcm.comp_id_linking_atom _pdbx_chem_comp_pcm.modified_residue_id_linking_atom _pdbx_chem_comp_pcm.uniprot_specific_ptm_accession _pdbx_chem_comp_pcm.uniprot_generic_ptm_accession 1 HEC ASP None Heme/heme-like "Amino-acid side chain" "Any position" CMD OD2 ? ? 2 HEC CYS None Heme/heme-like "Amino-acid side chain" "Any position" CAB SG ? ? 3 HEC CYS None Heme/heme-like "Amino-acid side chain" "Any position" CAC SG ? ? 4 HEC CYS None Heme/heme-like "Amino-acid side chain" "Any position" CMB SG ? ? 5 HEC LYS None Heme/heme-like "Amino-acid side chain" "Any position" CHA NZ ? ? 6 HEC TYR None Heme/heme-like "Amino-acid side chain" "Any position" C4B OH ? ? 7 HEC TYR None Heme/heme-like "Amino-acid side chain" "Any position" CHC CE1 ? ? 8 HEC TYR None Heme/heme-like "Amino-acid side chain" "Any position" CHC CE2 ? ? 9 HEC LYS None Heme/heme-like "Amino-acid side chain" "Any position" C2A CD ? ? #