data_EPO
# 
_chem_comp.id                                    EPO 
_chem_comp.name                                  "(2R,3R)-oxirane-2,3-dicarboxylic acid" 
_chem_comp.type                                  NON-POLYMER 
_chem_comp.pdbx_type                             HETAIN 
_chem_comp.formula                               "C4 H4 O5" 
_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                    2011-06-04 
_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                        132.072 
_chem_comp.one_letter_code                       ? 
_chem_comp.three_letter_code                     EPO 
_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        1CSB 
_chem_comp.pdbx_subcomponent_list                ? 
_chem_comp.pdbx_processing_site                  RCSB 
# 
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.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 
EPO O1  O1  O 0 1 N N N 15.843 14.666 64.315 -2.823 0.689  0.116  O1  EPO 1  
EPO C1  C1  C 0 1 N N N 15.532 15.074 63.180 -1.941 -0.137 0.102  C1  EPO 2  
EPO C2  C2  C 0 1 N N R 16.210 16.266 62.515 -0.549 0.241  0.535  C2  EPO 3  
EPO O2  O2  O 0 1 N N N 16.839 17.491 62.745 0.002  1.456  0.022  O2  EPO 4  
EPO C3  C3  C 0 1 N N R 15.299 17.491 62.745 0.550  0.257  -0.530 C3  EPO 5  
EPO C4  C4  C 0 1 N N N 16.009 18.802 62.462 1.942  -0.137 -0.109 C4  EPO 6  
EPO O3  O3  O 0 1 N N N 15.728 19.793 63.121 2.836  0.675  -0.142 O3  EPO 7  
EPO O4  O4  O 0 1 N Y N 14.493 14.394 62.470 -2.204 -1.392 -0.296 O4  EPO 8  
EPO H2  H2  H 0 1 N N N 16.704 15.515 61.881 -0.271 -0.055 1.547  H2  EPO 9  
EPO HO2 HO2 H 0 1 N N N 14.214 17.454 62.922 0.271  -0.006 -1.551 HO2 EPO 10 
EPO O5  O5  O 0 1 N Y N 16.999 18.878 61.433 2.189  -1.391 0.301  O5  EPO 11 
EPO H3  H3  H 0 1 N Y N 14.163 13.678 63.000 -3.113 -1.588 -0.561 H3  EPO 12 
EPO H4  H4  H 0 1 N Y N 17.342 19.763 61.388 3.097  -1.597 0.561  H4  EPO 13 
# 
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 
EPO O1 C1  DOUB N N 1  
EPO C1 C2  SING N N 2  
EPO C1 O4  SING N N 3  
EPO C2 O2  SING N N 4  
EPO C2 C3  SING N N 5  
EPO C2 H2  SING N N 6  
EPO C3 C4  SING N N 7  
EPO C3 HO2 SING N N 8  
EPO C3 O2  SING N N 9  
EPO C4 O3  DOUB N N 10 
EPO C4 O5  SING N N 11 
EPO O4 H3  SING N N 12 
EPO O5 H4  SING N N 13 
# 
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 
EPO SMILES           ACDLabs              12.01 "O=C(O)C1OC1C(=O)O"                                                      
EPO SMILES_CANONICAL CACTVS               3.370 "OC(=O)[C@@H]1O[C@H]1C(O)=O"                                             
EPO SMILES           CACTVS               3.370 "OC(=O)[CH]1O[CH]1C(O)=O"                                                
EPO SMILES_CANONICAL "OpenEye OEToolkits" 1.7.0 "[C@@H]1(C(O1)C(=O)O)C(=O)O"                                             
EPO SMILES           "OpenEye OEToolkits" 1.7.0 "C1(C(O1)C(=O)O)C(=O)O"                                                  
EPO InChI            InChI                1.03  "InChI=1S/C4H4O5/c5-3(6)1-2(9-1)4(7)8/h1-2H,(H,5,6)(H,7,8)/t1-,2-/m1/s1" 
EPO InChIKey         InChI                1.03  DCEMCPAKSGRHCN-JCYAYHJZSA-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 
EPO "SYSTEMATIC NAME" ACDLabs              12.01 "(2R,3R)-oxirane-2,3-dicarboxylic acid" 
EPO "SYSTEMATIC NAME" "OpenEye OEToolkits" 1.7.0 "(3R)-oxirane-2,3-dicarboxylic 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 
EPO "Create component"  1999-07-08 RCSB 
EPO "Modify descriptor" 2011-06-04 RCSB 
# 
