data_HEM # _chem_comp.id HEM _chem_comp.name "PROTOPORPHYRIN IX CONTAINING FE" _chem_comp.type NON-POLYMER _chem_comp.pdbx_type HETAIN _chem_comp.formula "C34 H32 Fe N4 O4" _chem_comp.mon_nstd_parent_comp_id ? _chem_comp.pdbx_synonyms HEME _chem_comp.pdbx_formal_charge ? _chem_comp.pdbx_initial_date 1999-07-08 _chem_comp.pdbx_modified_date 2026-07-31 _chem_comp.pdbx_ambiguous_flag Y _chem_comp.pdbx_release_status REL _chem_comp.pdbx_replaced_by ? _chem_comp.pdbx_replaces MHM _chem_comp.formula_weight 616.487 _chem_comp.one_letter_code ? _chem_comp.three_letter_code HEM _chem_comp.pdbx_model_coordinates_details ? _chem_comp.pdbx_model_coordinates_missing_flag N _chem_comp.pdbx_ideal_coordinates_details MetalCoord _chem_comp.pdbx_ideal_coordinates_missing_flag N _chem_comp.pdbx_model_coordinates_db_code 3IA3 _chem_comp.pdbx_subcomponent_list ? _chem_comp.pdbx_processing_site RCSB _chem_comp.pdbx_pcm Y _chem_comp.pdbx_comp_type "metal-containing ligand" # 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 HEM CHA CHA C 0 1 N N N N N N 2.748 -19.531 39.896 2.451 0.827 0.221 CHA HEM 1 HEM CHB CHB C 0 1 N N N N N N 3.258 -17.744 35.477 -1.810 3.025 0.485 CHB HEM 2 HEM CHC CHC C 0 1 N N N N N N 1.703 -21.900 33.637 -4.028 -1.226 0.043 CHC HEM 3 HEM CHD CHD C 0 1 N N N N N N 1.149 -23.677 38.059 0.248 -3.442 0.152 CHD HEM 4 HEM C1A C1A C 0 1 Y N N N N N 3.031 -18.673 38.872 1.505 1.846 0.321 C1A HEM 5 HEM C2A C2A C 0 1 Y N N N N N 3.578 -17.325 39.013 1.753 3.203 0.408 C2A HEM 6 HEM C3A C3A C 0 1 Y N N N N N 3.705 -16.820 37.785 0.543 3.826 0.482 C3A HEM 7 HEM C4A C4A C 0 1 Y N N N N N 3.256 -17.863 36.862 -0.426 2.851 0.430 C4A HEM 8 HEM CMA CMA C 0 1 N N N N N N 4.227 -15.469 37.393 0.337 5.316 0.587 CMA HEM 9 HEM CAA CAA C 0 1 N N N N N N 3.945 -16.670 40.296 3.106 3.870 0.422 CAA HEM 10 HEM CBA CBA C 0 1 N N N N N N 5.391 -17.138 40.581 3.658 4.190 -0.964 CBA HEM 11 HEM CGA CGA C 0 1 N N N N N N 6.095 -16.663 41.825 5.033 4.851 -0.962 CGA HEM 12 HEM O1A O1A O 0 1 N N N N N N 7.098 -15.928 41.683 6.038 4.112 -0.910 O1A HEM 13 HEM O2A O2A O -1 1 N N N N N N 5.657 -17.040 42.940 5.083 6.098 -1.014 O2A HEM 14 HEM C1B C1B C 0 1 N N N N N N 2.888 -18.698 34.579 -2.836 2.091 0.335 C1B HEM 15 HEM C2B C2B C 0 1 N N N N N N 2.933 -18.535 33.146 -4.200 2.363 0.274 C2B HEM 16 HEM C3B C3B C 0 1 N N N N N N 2.499 -19.716 32.632 -4.881 1.141 0.109 C3B HEM 17 HEM C4B C4B C 0 1 N N N N N N 2.187 -20.580 33.743 -3.880 0.169 0.131 C4B HEM 18 HEM CMB CMB C 0 1 N N N N N N 3.391 -17.290 32.422 -4.853 3.720 0.299 CMB HEM 19 HEM CAB CAB C 0 1 N N N N N N 2.345 -20.140 31.217 -6.365 1.025 0.019 CAB HEM 20 HEM CBB CBB C 0 1 N N N N N N 1.755 -19.492 30.233 -7.165 0.079 -0.414 CBB HEM 21 HEM C1C C1C C 0 1 Y N N N N N 1.395 -22.786 34.659 -3.079 -2.249 0.009 C1C HEM 22 HEM C2C C2C C 0 1 Y N N N N N 0.854 -24.130 34.500 -3.336 -3.613 -0.114 C2C HEM 23 HEM C3C C3C C 0 1 Y N N N N N 0.689 -24.626 35.757 -2.102 -4.291 -0.112 C3C HEM 24 HEM C4C C4C C 0 1 Y N N N N N 1.139 -23.583 36.674 -1.144 -3.289 0.045 C4C HEM 25 HEM CMC CMC C 0 1 N N N N N N 0.550 -24.782 33.175 -4.683 -4.268 -0.278 CMC HEM 26 HEM CAC CAC C 0 1 N N N N N N 0.164 -25.943 36.196 -1.965 -5.773 -0.212 CAC HEM 27 HEM CBC CBC C 0 1 N N N N N N 0.498 -27.158 35.750 -0.958 -6.561 -0.514 CBC HEM 28 HEM C1D C1D C 0 1 N N N N N N 1.550 -22.718 38.980 1.274 -2.496 0.145 C1D HEM 29 HEM C2D C2D C 0 1 N N N N N N 1.513 -22.879 40.415 2.629 -2.730 0.120 C2D HEM 30 HEM C3D C3D C 0 1 N N N N N N 1.951 -21.691 40.929 3.256 -1.521 0.132 C3D HEM 31 HEM C4D C4D C 0 1 N N N N N N 2.277 -20.826 39.811 2.268 -0.556 0.186 C4D HEM 32 HEM CMD CMD C 0 1 N N N N N N 1.055 -24.094 41.156 3.335 -4.061 0.068 CMD HEM 33 HEM CAD CAD C 0 1 N N N N N N 2.048 -21.326 42.352 4.746 -1.289 0.116 CAD HEM 34 HEM CBD CBD C 0 1 N N N N N N 0.741 -20.498 42.530 5.371 -1.155 1.502 CBD HEM 35 HEM CGD CGD C 0 1 N N N N N N 0.578 -19.987 43.892 6.848 -0.769 1.497 CGD HEM 36 HEM O1D O1D O 0 1 N N N N N N 1.387 -19.103 44.303 7.135 0.446 1.449 O1D HEM 37 HEM O2D O2D O -1 1 N N N N N N -0.401 -20.468 44.537 7.694 -1.687 1.540 O2D HEM 38 HEM NA NA N -1 1 Y N N N N N 2.863 -18.969 37.554 0.161 1.624 0.337 NA HEM 39 HEM NB NB N 0 1 N N N N N N 2.439 -19.944 34.911 -2.620 0.750 0.265 NB HEM 40 HEM NC NC N -1 1 Y N N N N N 1.537 -22.509 35.976 -1.741 -2.032 0.123 NC HEM 41 HEM ND ND N 0 1 N N N N N N 2.008 -21.465 38.663 1.042 -1.153 0.193 ND HEM 42 HEM FE FE FE ? 0 N N N N N N 2.196 -20.749 36.814 -0.791 -0.207 0.272 FE HEM 43 HEM HHB HHB H 0 1 N N N N N N 3.587 -16.798 35.072 -2.096 3.899 0.702 HHB HEM 44 HEM HHC HHC H 0 1 N N N N N N 1.553 -22.268 32.633 -4.926 -1.516 0.061 HHC HEM 45 HEM HHD HHD H 0 1 N N N N N N 0.802 -24.613 38.472 0.520 -4.329 0.327 HHD HEM 46 HEM HMA HMA H 0 1 N N N N N N 5.316 -15.524 37.249 -0.565 5.552 0.319 HMA HEM 47 HEM HMAA HMAA H 0 0 N N N N N N 3.749 -15.149 36.455 0.961 5.779 0.004 HMAA HEM 48 HEM HMAB HMAB H 0 0 N N N N N N 3.998 -14.743 38.187 0.484 5.601 1.503 HMAB HEM 49 HEM HAA HAA H 0 1 N N N N N N 3.905 -15.575 40.197 3.749 3.293 0.889 HAA HEM 50 HEM HAAA HAAA H 0 0 N N N N N N 3.268 -16.991 41.102 3.062 4.702 0.942 HAAA HEM 51 HEM HBA HBA H 0 1 N N N N N N 5.368 -18.237 40.627 3.024 4.785 -1.428 HBA HEM 52 HEM HBAA HBAA H 0 0 N N N N N N 6.004 -16.819 39.725 3.712 3.354 -1.483 HBAA HEM 53 HEM HMB HMB H 0 1 N N N N N N 3.319 -17.449 31.336 -5.651 3.716 -0.253 HMB HEM 54 HEM HMBA HMBA H 0 0 N N N N N N 2.753 -16.442 32.711 -4.243 4.390 -0.047 HMBA HEM 55 HEM HMBB HMBB H 0 0 N N N N N N 4.435 -17.072 32.692 -5.096 3.947 1.212 HMBB HEM 56 HEM HAB HAB H 0 1 N N N N N N 2.770 -21.100 30.963 -6.849 1.756 0.371 HAB HEM 57 HEM HBB HBB H 0 1 N N N N N N 1.719 -19.927 29.245 -8.099 0.183 -0.334 HBB HEM 58 HEM HBBA HBBA H 0 0 N N N N N N 1.308 -18.526 30.414 -6.813 -0.684 -0.840 HBBA HEM 59 HEM HMC HMC H 0 1 N N N N N N 0.153 -25.793 33.346 -4.600 -5.068 -0.820 HMC HEM 60 HEM HMCA HMCA H 0 0 N N N N N N -0.196 -24.182 32.634 -5.298 -3.661 -0.719 HMCA HEM 61 HEM HMCB HMCB H 0 0 N N N N N N 1.472 -24.846 32.578 -5.037 -4.506 0.594 HMCB HEM 62 HEM HAC HAC H 0 1 N N N N N N -0.583 -25.916 36.975 -2.736 -6.268 0.016 HAC HEM 63 HEM HBC HBC H 0 1 N N N N N N 0.027 -28.035 36.169 -1.067 -7.497 -0.472 HBC HEM 64 HEM HBCA HBCA H 0 0 N N N N N N 1.239 -27.263 34.971 -0.140 -6.196 -0.808 HBCA HEM 65 HEM HMD HMD H 0 1 N N N N N N 1.142 -23.919 42.238 3.982 -4.061 -0.656 HMD HEM 66 HEM HMDA HMDA H 0 0 N N N N N N 0.006 -24.304 40.902 2.700 -4.778 -0.082 HMDA HEM 67 HEM HMDB HMDB H 0 0 N N N N N N 1.680 -24.954 40.872 3.797 -4.215 0.908 HMDB HEM 68 HEM HAD HAD H 0 1 N N N N N N 2.055 -22.216 42.999 4.942 -0.473 -0.395 HAD HEM 69 HEM HADA HADA H 0 0 N N N N N N 2.943 -20.719 42.554 5.194 -2.020 -0.362 HADA HEM 70 HEM HBD HBD H 0 1 N N N N N N 0.767 -19.646 41.835 5.274 -2.013 1.977 HBD HEM 71 HEM HBDA HBDA H 0 0 N N N N N N -0.119 -21.141 42.290 4.871 -0.477 2.011 HBDA HEM 72 HEM H2A H2A H 0 1 N N N N N N 6.201 -16.682 43.632 5.826 -6.017 1.681 H2A HEM 73 HEM H2D H2D H 0 1 N N N N N N -0.445 -20.063 45.395 8.183 1.548 -1.834 H2D HEM 74 HEM HHA HHA H 0 1 N N N N N N 2.913 -19.150 40.893 3.349 1.117 0.154 HHA HEM 75 # 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 _chem_comp_bond.pdbx_metal_coordination_flag _chem_comp_bond.pdbx_metal_pi_flag HEM CHA C1A SING N N 1 N N HEM CHA C4D DOUB N N 2 N N HEM CHA HHA SING N N 3 N N HEM CHB C4A SING N N 4 N N HEM CHB C1B DOUB N N 5 N N HEM CHB HHB SING N N 6 N N HEM CHC C4B SING N N 7 N N HEM CHC C1C DOUB N N 8 N N HEM CHC HHC SING N N 9 N N HEM CHD C4C DOUB N N 10 N N HEM CHD C1D SING N N 11 N N HEM CHD HHD SING N N 12 N N HEM C1A C2A DOUB Y N 13 N N HEM C1A NA SING Y N 14 N N HEM C2A C3A SING Y N 15 N N HEM C2A CAA SING N N 16 N N HEM C3A C4A DOUB Y N 17 N N HEM C3A CMA SING N N 18 N N HEM C4A NA SING Y N 19 N N HEM CMA HMA SING N N 20 N N HEM CMA HMAA SING N N 21 N N HEM CMA HMAB SING N N 22 N N HEM CAA CBA SING N N 23 N N HEM CAA HAA SING N N 24 N N HEM CAA HAAA SING N N 25 N N HEM CBA CGA SING N N 26 N N HEM CBA HBA SING N N 27 N N HEM CBA HBAA SING N N 28 N N HEM CGA O1A DOUB N N 29 N N HEM CGA O2A SING N N 30 N N HEM C1B C2B SING N N 31 N N HEM C1B NB SING N N 32 N N HEM C2B C3B DOUB N N 33 N N HEM C2B CMB SING N N 34 N N HEM C3B C4B SING N N 35 N N HEM C3B CAB SING N N 36 N N HEM C4B NB DOUB N N 37 N N HEM CMB HMB SING N N 38 N N HEM CMB HMBA SING N N 39 N N HEM CMB HMBB SING N N 40 N N HEM CAB CBB DOUB N N 41 N N HEM CAB HAB SING N N 42 N N HEM CBB HBB SING N N 43 N N HEM CBB HBBA SING N N 44 N N HEM C1C C2C SING Y N 45 N N HEM C1C NC SING Y N 46 N N HEM C2C C3C DOUB Y N 47 N N HEM C2C CMC SING N N 48 N N HEM C3C C4C SING Y N 49 N N HEM C3C CAC SING N N 50 N N HEM C4C NC SING Y N 51 N N HEM CMC HMC SING N N 52 N N HEM CMC HMCA SING N N 53 N N HEM CMC HMCB SING N N 54 N N HEM CAC CBC DOUB N N 55 N N HEM CAC HAC SING N N 56 N N HEM CBC HBC SING N N 57 N N HEM CBC HBCA SING N N 58 N N HEM C1D C2D SING N N 59 N N HEM C1D ND DOUB N N 60 N N HEM C2D C3D DOUB N N 61 N N HEM C2D CMD SING N N 62 N N HEM C3D C4D SING N N 63 N N HEM C3D CAD SING N N 64 N N HEM C4D ND SING N N 65 N N HEM CMD HMD SING N N 66 N N HEM CMD HMDA SING N N 67 N N HEM CMD HMDB SING N N 68 N N HEM CAD CBD SING N N 69 N N HEM CAD HAD SING N N 70 N N HEM CAD HADA SING N N 71 N N HEM CBD CGD SING N N 72 N N HEM CBD HBD SING N N 73 N N HEM CBD HBDA SING N N 74 N N HEM CGD O1D DOUB N N 75 N N HEM CGD O2D SING N N 76 N N HEM O2A H2A SING N N 77 N N HEM O2D H2D SING N N 78 N N HEM FE NA SING N N 79 Y N HEM FE NB SING N N 80 Y N HEM FE NC SING N N 81 Y N HEM FE ND SING N N 82 Y N # 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 HEM SMILES ACDLabs 12.01 "C=1c3c(c(c4C=C5C(=C(C=6C=C7C(=C(C8=CC=2C(=C(C=1N=2[Fe](n34)(N5=6)N78)CCC(=O)O)C)\C=C)C)\C=C)C)C)CCC(=O)O" HEM 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,1-2,9-12H2,3-6H3,(H4,35,36,37,38,39,40,41,42);/q;+2/p-2/b25-13-,26-13-,27-14-,28-15-,29-14-,30-15-,31-16-,32-16-;" HEM InChIKey InChI 1.03 KABFMIBPWCXCRK-RGGAHWMASA-L HEM SMILES_CANONICAL CACTVS 3.385 "CC1=C(CCC(O)=O)C2=Cc3n4[Fe]5|6|N2=C1C=c7n5c(=CC8=N|6C(=Cc4c(C)c3CCC(O)=O)C(=C8C=C)C)c(C)c7C=C" HEM SMILES CACTVS 3.385 "CC1=C(CCC(O)=O)C2=Cc3n4[Fe]5|6|N2=C1C=c7n5c(=CC8=N|6C(=Cc4c(C)c3CCC(O)=O)C(=C8C=C)C)c(C)c7C=C" HEM SMILES_CANONICAL "OpenEye OEToolkits" 1.7.6 "Cc1c2n3c(c1CCC(=O)O)C=C4C(=C(C5=[N]4[Fe]36[N]7=C(C=C8N6C(=C5)C(=C8C)C=C)C(=C(C7=C2)C)C=C)C)CCC(=O)O" HEM SMILES "OpenEye OEToolkits" 1.7.6 "Cc1c2n3c(c1CCC(=O)O)C=C4C(=C(C5=[N]4[Fe]36[N]7=C(C=C8N6C(=C5)C(=C8C)C=C)C(=C(C7=C2)C)C=C)C)CCC(=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 HEM "SYSTEMATIC NAME" "OpenEye OEToolkits" 1.6.1 "3-[(5Z,10Z,14Z,19Z)-18-(2-carboxyethyl)-8,13-bis(ethenyl)-3,7,12,17-tetramethyl-21,23-dihydroporphyrin-2-yl]propanoic acid" HEM "SYSTEMATIC NAME" ACDLabs 12.01 "[3,3'-(7,12-diethenyl-3,8,13,17-tetramethylporphyrin-2,18-diyl-kappa~4~N~21~,N~22~,N~23~,N~24~)dipropanoato(2-)]iron" # _pdbx_chem_comp_synonyms.ordinal 1 _pdbx_chem_comp_synonyms.comp_id HEM _pdbx_chem_comp_synonyms.name HEME _pdbx_chem_comp_synonyms.provenance ? _pdbx_chem_comp_synonyms.type ? # 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 HEM ASP None Heme/heme-like "Amino-acid side chain" "Any position" CMD OD2 ? ? 2 HEM CYS None Heme/heme-like "Amino-acid side chain" "Any position" CAB SG ? ? 3 HEM CYS None Heme/heme-like "Amino-acid side chain" "Any position" CAC SG ? ? 4 HEM GLU None Heme/heme-like "Amino-acid side chain" "Any position" CMB OE2 ? ? 5 HEM GLU None Heme/heme-like "Amino-acid side chain" "Any position" CMD OE2 ? ? 6 HEM HIS None Heme/heme-like "Amino-acid side chain" "Any position" CAB NE2 ? ? 7 HEM MET None Heme/heme-like "Amino-acid side chain" "Any position" CBB SD ? ? 8 HEM ALA None "Metal coordination" "Amino-acid backbone" "Any position" FE O ? ? 9 HEM ARG None "Metal coordination" "Amino-acid side chain" "Any position" FE NH1 ? ? 10 HEM CYS None "Metal coordination" "Amino-acid side chain" "Any position" FE SG ? ? 11 HEM DTR None "Metal coordination" "Amino-acid backbone" "Any position" FE O ? ? 12 HEM GLN None "Metal coordination" "Amino-acid side chain" "Any position" FE NE2 ? ? 13 HEM GLU None "Metal coordination" "Amino-acid side chain" "Any position" FE OE1 ? ? 14 HEM GLU None "Metal coordination" "Amino-acid side chain" "Any position" FE OE2 ? ? 15 HEM GLY None "Metal coordination" "Amino-acid backbone" "Any position" FE N ? ? 16 HEM HIS None "Metal coordination" "Amino-acid side chain" "Any position" FE NE2 ? ? 17 HEM HIS None "Metal coordination" "Amino-acid side chain" "Any position" FE ND1 ? ? 18 HEM LYS None "Metal coordination" "Amino-acid side chain" "Any position" FE NZ ? ? 19 HEM MET None "Metal coordination" "Amino-acid side chain" "Any position" FE SD ? ? 20 HEM MET None "Metal coordination" "Amino-acid backbone" "Any position" FE N ? ? 21 HEM MHS None "Metal coordination" "Amino-acid side chain" "Any position" FE NE2 ? ? 22 HEM MSE None "Metal coordination" "Amino-acid side chain" "Any position" FE SE ? ? 23 HEM PPI None "Metal coordination" "Amino-acid side chain" "Any position" FE O1 ? ? 24 HEM PRO None "Metal coordination" "Amino-acid backbone" "Any position" FE N ? ? 25 HEM SEC None "Metal coordination" "Amino-acid side chain" "Any position" FE SE ? ? 26 HEM SER None "Metal coordination" "Amino-acid side chain" "Any position" FE OG ? ? 27 HEM TRP None "Metal coordination" "Amino-acid side chain" "Any position" FE NE1 ? ? 28 HEM TRP None "Metal coordination" "Amino-acid backbone" "Any position" FE N ? ? 29 HEM TYR None "Metal coordination" "Amino-acid side chain" "Any position" FE OH ? ? 30 HEM TYR None "Metal coordination" "Amino-acid backbone" "Any position" FE N ? ? # loop_ _pdbx_chem_comp_atom_coordination.geometry_id _pdbx_chem_comp_atom_coordination.comp_id _pdbx_chem_comp_atom_coordination.atom_id _pdbx_chem_comp_atom_coordination.number _pdbx_chem_comp_atom_coordination.geometry_calculated _pdbx_chem_comp_atom_coordination.geometry_generic _pdbx_chem_comp_atom_coordination.geometry_abbr _pdbx_chem_comp_atom_coordination.provenance _pdbx_chem_comp_atom_coordination.representative_entry_id 1 HEM FE 6 octahedron octahedral OCT FindGeo 3X34 1 HEM FE 6 octahedral octahedral OCT MetalCoord 3X34 2 HEM FE 5 "square pyramid" "square pyramidal" SPY FindGeo 3QM6 2 HEM FE 5 square-pyramid "square pyramidal" SQP MetalCoord 3QM6 # loop_ _pdbx_chem_comp_atom_coordination_sphere.id _pdbx_chem_comp_atom_coordination_sphere.geometry_id _pdbx_chem_comp_atom_coordination_sphere.comp_id _pdbx_chem_comp_atom_coordination_sphere.atom_id _pdbx_chem_comp_atom_coordination_sphere.descriptor _pdbx_chem_comp_atom_coordination_sphere.provenance _pdbx_chem_comp_atom_coordination_sphere.representative_entry_id 1 1 HEM FE "@OCT{Fe,N,N,N,N,N,N}" MetalCoord 3X34 2 1 HEM FE "@OCT{Fe,N,N,N,N,N,O}" MetalCoord 5YCE 3 1 HEM FE "@OCT{Fe,N,N,N,N,O,O}" MetalCoord 1GWE 4 1 HEM FE "@OCT{Fe,C,N,N,N,N,N}" MetalCoord 1YWA 5 1 HEM FE "@OCT{Fe,N,N,N,N,O,S}" MetalCoord 1JFB 6 1 HEM FE "@OCT{Fe,C,N,S,N,N,N}" MetalCoord 1JFC 7 1 HEM FE "@OCT{Fe,N,N,N,N,N,S}" MetalCoord 1CTJ 8 1 HEM FE "@OCT{Fe,F,N,N,N,N,N}" MetalCoord 5K91 9 1 HEM FE "@OCT{Fe,N,N,N,N,S,S}" MetalCoord 9ISU 10 1 HEM FE "@OCT{Fe,Cl,N,N,N,N,N}" MetalCoord 6OM5 11 1 HEM FE "@OCT{Fe,Cl,N,S,N,N,N}" MetalCoord 7U00 12 1 HEM FE "@OCT{Fe,C,N,O,N,N,N}" MetalCoord 6JSB 13 1 HEM FE "@OCT{Fe,N,N,N,N,O,Se}" MetalCoord 3RUR 14 1 HEM FE "@OCT{Fe,C,N,C,N,N,N}" MetalCoord 7P46 15 1 HEM FE "@OCT{Fe,I,N,N,N,N,N}" MetalCoord 1ARX 16 1 HEM FE "@OCT{Fe,N,N,N,N,N,Se}" MetalCoord 2Q8P 17 1 HEM FE "@OCT{Fe,Br,N,S,N,N,N}" MetalCoord 7TZY 18 1 HEM FE "@OCT{Fe,N,N,N,N,N,X}" MetalCoord 4NFG 19 1 HEM FE "@OCT{Fe,Cl,N,O,N,N,N}" MetalCoord 4JET 20 2 HEM FE "@SQP{Fe,N,N,N,N,N}" MetalCoord 3QM6 21 2 HEM FE "@SQP{Fe,N,N,N,N,C}" MetalCoord 2W72 22 2 HEM FE "@SQP{Fe,N,N,N,N,S}" MetalCoord 8U1I 23 2 HEM FE "@SQP{Fe,N,N,N,N,O}" MetalCoord 3MOL 24 2 HEM FE "@SQP{Fe,N,N,N,N,Cl}" MetalCoord 3HX9 25 2 HEM FE "@SQP{Fe,N,N,N,N,Se}" MetalCoord 3FWF # loop_ _pdbx_chem_comp_audit.comp_id _pdbx_chem_comp_audit.action_type _pdbx_chem_comp_audit.date _pdbx_chem_comp_audit.processing_site HEM "Create component" 1999-07-08 RCSB HEM "Other modification" 2016-01-20 RCSB HEM "Modify synonyms" 2020-06-05 PDBE HEM "Modify PCM" 2024-09-27 PDBE HEM "Other modification" 2026-07-17 RCSB HEM "Other modification" 2026-07-31 RCSB #