data_EPE
# 
_chem_comp.id                                    EPE 
_chem_comp.name                                  "4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID" 
_chem_comp.type                                  NON-POLYMER 
_chem_comp.pdbx_type                             HETAIN 
_chem_comp.formula                               "C8 H18 N2 O4 S" 
_chem_comp.mon_nstd_parent_comp_id               ? 
_chem_comp.pdbx_synonyms                         HEPES 
_chem_comp.pdbx_formal_charge                    0 
_chem_comp.pdbx_initial_date                     1999-07-08 
_chem_comp.pdbx_modified_date                    2024-09-27 
_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                        238.305 
_chem_comp.one_letter_code                       ? 
_chem_comp.three_letter_code                     EPE 
_chem_comp.pdbx_model_coordinates_details        ? 
_chem_comp.pdbx_model_coordinates_missing_flag   N 
_chem_comp.pdbx_ideal_coordinates_details        ? 
_chem_comp.pdbx_ideal_coordinates_missing_flag   N 
_chem_comp.pdbx_model_coordinates_db_code        1CXQ 
_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 
EPE N1   N1   N 0 1 N N N N N N 61.652 47.337 51.616 -0.820 -0.330 0.258  N1   EPE 1  
EPE C2   C2   C 0 1 N N N N N N 63.051 46.905 51.967 -1.669 0.557  1.061  C2   EPE 2  
EPE C3   C3   C 0 1 N N N N N N 63.962 47.257 50.796 -1.693 0.072  2.511  C3   EPE 3  
EPE N4   N4   N 0 1 N N N N N N 63.551 46.544 49.578 -0.342 0.147  3.079  N4   EPE 4  
EPE C5   C5   C 0 1 N N N N N N 62.151 46.910 49.248 0.507  -0.740 2.276  C5   EPE 5  
EPE C6   C6   C 0 1 N N N N N N 61.218 46.554 50.402 0.531  -0.255 0.826  C6   EPE 6  
EPE C7   C7   C 0 1 N N N N N N 64.368 46.893 48.385 -0.416 -0.441 4.423  C7   EPE 7  
EPE C8   C8   C 0 1 N N N N N N 65.854 46.721 48.613 0.966  -0.395 5.076  C8   EPE 8  
EPE O8   O8   O 0 1 N N N N N N 66.240 45.400 48.979 1.402  0.961  5.174  O8   EPE 9  
EPE C9   C9   C 0 1 N N N N N N 60.685 46.992 52.709 -0.746 0.258  -1.085 C9   EPE 10 
EPE C10  C10  C 0 1 N N N N N N 60.870 47.974 53.893 0.128  -0.621 -1.980 C10  EPE 11 
EPE S    S    S 0 1 N N N N N N 59.559 47.692 55.090 0.219  0.104  -3.640 S    EPE 12 
EPE O1S  O1S  O 0 1 N N N N N N 59.732 48.694 56.115 -1.019 -0.001 -4.327 O1S  EPE 13 
EPE O2S  O2S  O 0 1 N N N N N N 59.737 46.327 55.596 0.986  1.301  -3.646 O2S  EPE 14 
EPE O3S  O3S  O 0 1 N N N N N N 58.331 47.863 54.358 1.110  -0.870 -4.397 O3S  EPE 15 
EPE H21  1H2  H 0 1 N N N N N N 63.405 47.334 52.932 -2.683 0.551  0.659  H21  EPE 16 
EPE H22  2H2  H 0 1 N N N N N N 63.111 45.828 52.251 -1.271 1.571  1.024  H22  EPE 17 
EPE H31  1H3  H 0 1 N N N N N N 64.013 48.358 50.630 -2.044 -0.959 2.543  H31  EPE 18 
EPE H32  2H3  H 0 1 N N N N N N 65.034 47.072 51.038 -2.367 0.702  3.093  H32  EPE 19 
EPE H51  1H5  H 0 1 N N N N N N 62.060 47.982 48.958 1.520  -0.734 2.677  H51  EPE 20 
EPE H52  2H5  H 0 1 N N N N N N 61.817 46.449 48.288 0.109  -1.754 2.313  H52  EPE 21 
EPE H61  1H6  H 0 1 N N N N N N 61.169 45.456 50.592 1.204  -0.885 0.244  H61  EPE 22 
EPE H62  2H6  H 0 1 N N N N N N 60.143 46.711 50.150 0.881  0.775  0.794  H62  EPE 23 
EPE H71  1H7  H 0 1 N N N N N N 64.033 46.316 47.491 -0.748 -1.476 4.348  H71  EPE 24 
EPE H72  2H7  H 0 1 N N N N N N 64.136 47.925 48.032 -1.123 0.124  5.029  H72  EPE 25 
EPE H81  1H8  H 0 1 N N N N N N 66.427 47.061 47.719 1.673  -0.961 4.470  H81  EPE 26 
EPE H82  2H8  H 0 1 N N N N N N 66.220 47.457 49.365 0.911  -0.832 6.073  H82  EPE 27 
EPE HO8  HO8  H 0 1 N N N N N N 67.172 45.292 49.122 2.275  0.945  5.590  HO8  EPE 28 
EPE H91  1H9  H 0 1 N N N N N N 59.631 46.964 52.345 -1.748 0.323  -1.509 H91  EPE 29 
EPE H92  2H9  H 0 1 N N N N N N 60.772 45.927 53.027 -0.313 1.256  -1.022 H92  EPE 30 
EPE H101 1H10 H 0 0 N N N N N N 61.885 47.904 54.349 1.131  -0.687 -1.557 H101 EPE 31 
EPE H102 2H10 H 0 0 N N N N N N 60.921 49.037 53.560 -0.304 -1.620 -2.044 H102 EPE 32 
EPE HOS3 3HOS H 0 0 N N N N N N 57.638 47.714 54.990 1.194  -0.529 -5.298 HOS3 EPE 33 
# 
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 
EPE N1  C2   SING N N 1  
EPE N1  C6   SING N N 2  
EPE N1  C9   SING N N 3  
EPE C2  C3   SING N N 4  
EPE C2  H21  SING N N 5  
EPE C2  H22  SING N N 6  
EPE C3  N4   SING N N 7  
EPE C3  H31  SING N N 8  
EPE C3  H32  SING N N 9  
EPE N4  C5   SING N N 10 
EPE N4  C7   SING N N 11 
EPE C5  C6   SING N N 12 
EPE C5  H51  SING N N 13 
EPE C5  H52  SING N N 14 
EPE C6  H61  SING N N 15 
EPE C6  H62  SING N N 16 
EPE C7  C8   SING N N 17 
EPE C7  H71  SING N N 18 
EPE C7  H72  SING N N 19 
EPE C8  O8   SING N N 20 
EPE C8  H81  SING N N 21 
EPE C8  H82  SING N N 22 
EPE O8  HO8  SING N N 23 
EPE C9  C10  SING N N 24 
EPE C9  H91  SING N N 25 
EPE C9  H92  SING N N 26 
EPE C10 S    SING N N 27 
EPE C10 H101 SING N N 28 
EPE C10 H102 SING N N 29 
EPE S   O1S  DOUB N N 30 
EPE S   O2S  DOUB N N 31 
EPE S   O3S  SING N N 32 
EPE O3S HOS3 SING N N 33 
# 
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 
EPE SMILES           ACDLabs              10.04 "O=S(=O)(O)CCN1CCN(CCO)CC1"                                                          
EPE SMILES_CANONICAL CACTVS               3.341 "OCCN1CCN(CC1)CC[S](O)(=O)=O"                                                        
EPE SMILES           CACTVS               3.341 "OCCN1CCN(CC1)CC[S](O)(=O)=O"                                                        
EPE SMILES_CANONICAL "OpenEye OEToolkits" 1.5.0 "C1CN(CCN1CCO)CCS(=O)(=O)O"                                                          
EPE SMILES           "OpenEye OEToolkits" 1.5.0 "C1CN(CCN1CCO)CCS(=O)(=O)O"                                                          
EPE InChI            InChI                1.03  "InChI=1S/C8H18N2O4S/c11-7-5-9-1-3-10(4-2-9)6-8-15(12,13)14/h11H,1-8H2,(H,12,13,14)" 
EPE InChIKey         InChI                1.03  JKMHFZQWWAIEOD-UHFFFAOYSA-N                                                          
# 
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 
EPE "SYSTEMATIC NAME" ACDLabs              10.04 "2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid" 
EPE "SYSTEMATIC NAME" "OpenEye OEToolkits" 1.5.0 "2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic 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 
EPE "Create component"  1999-07-08 RCSB 
EPE "Modify descriptor" 2011-06-04 RCSB 
EPE "Modify synonyms"   2020-06-05 PDBE 
EPE "Modify PCM"        2024-09-27 PDBE 
# 
_pdbx_chem_comp_synonyms.ordinal      1 
_pdbx_chem_comp_synonyms.comp_id      EPE 
_pdbx_chem_comp_synonyms.name         HEPES 
_pdbx_chem_comp_synonyms.provenance   ? 
_pdbx_chem_comp_synonyms.type         ? 
# 
_pdbx_chem_comp_pcm.pcm_id                             1 
_pdbx_chem_comp_pcm.comp_id                            EPE 
_pdbx_chem_comp_pcm.modified_residue_id                SER 
_pdbx_chem_comp_pcm.type                               None 
_pdbx_chem_comp_pcm.category                           "Covalent chemical modification" 
_pdbx_chem_comp_pcm.position                           "Amino-acid side chain" 
_pdbx_chem_comp_pcm.polypeptide_position               "Any position" 
_pdbx_chem_comp_pcm.comp_id_linking_atom               S 
_pdbx_chem_comp_pcm.modified_residue_id_linking_atom   OG 
_pdbx_chem_comp_pcm.uniprot_specific_ptm_accession     ? 
_pdbx_chem_comp_pcm.uniprot_generic_ptm_accession      ? 
# 
