data_BUA
# 
_chem_comp.id                                    BUA 
_chem_comp.name                                  "butanoic acid" 
_chem_comp.type                                  non-polymer 
_chem_comp.pdbx_type                             HETAIN 
_chem_comp.formula                               "C4 H8 O2" 
_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                    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                        88.105 
_chem_comp.one_letter_code                       ? 
_chem_comp.three_letter_code                     BUA 
_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        1ZRM 
_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 
BUA C1  C1 C 0 1 N N N N N N 21.265 14.257 14.890 -2.793 0.238  -0.000 C1  BUA 1  
BUA C2  C2 C 0 1 N N N N N N 21.543 13.655 13.502 -1.415 -0.427 0.000  C2  BUA 2  
BUA C3  C3 C 0 1 N N N N N N 20.311 13.520 12.576 -0.329 0.650  -0.000 C3  BUA 3  
BUA C4  C4 C 0 1 N N N Y N Y 19.289 12.559 13.183 1.028  -0.006 0.000  C4  BUA 4  
BUA O1  O1 O 0 1 N N N Y N Y 18.091 12.873 13.113 1.117  -1.211 0.000  O1  BUA 5  
BUA O2  O2 O 0 1 N Y N Y N Y 19.692 11.522 13.722 2.138  0.749  -0.000 O2  BUA 6  
BUA H11 H1 H 0 1 N N N N N N 22.203 14.307 15.463 -3.567 -0.529 0.000  H11 BUA 7  
BUA H12 H2 H 0 1 N N N N N N 20.851 15.270 14.774 -2.897 0.859  0.890  H12 BUA 8  
BUA H13 H3 H 0 1 N N N N N N 20.542 13.625 15.426 -2.897 0.859  -0.890 H13 BUA 9  
BUA H21 H4 H 0 1 N N N N N N 21.970 12.652 13.647 -1.312 -1.048 0.890  H21 BUA 10 
BUA H22 H5 H 0 1 N N N N N N 22.279 14.297 12.995 -1.312 -1.048 -0.890 H22 BUA 11 
BUA H31 H6 H 0 1 N N N N N N 20.634 13.135 11.598 -0.432 1.270  -0.890 H31 BUA 12 
BUA H32 H7 H 0 1 N N N N N N 19.846 14.508 12.446 -0.432 1.270  0.890  H32 BUA 13 
BUA HO2 H8 H 0 1 N Y N Y N Y 18.951 11.031 14.058 2.986  0.283  -0.000 HO2 BUA 14 
# 
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 
BUA C3 C4  SING N N 1  
BUA C3 C2  SING N N 2  
BUA O1 C4  DOUB N N 3  
BUA C4 O2  SING N N 4  
BUA C2 C1  SING N N 5  
BUA C1 H11 SING N N 6  
BUA C1 H12 SING N N 7  
BUA C1 H13 SING N N 8  
BUA C2 H21 SING N N 9  
BUA C2 H22 SING N N 10 
BUA C3 H31 SING N N 11 
BUA C3 H32 SING N N 12 
BUA O2 HO2 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 
BUA InChI            InChI                1.03  "InChI=1S/C4H8O2/c1-2-3-4(5)6/h2-3H2,1H3,(H,5,6)" 
BUA InChIKey         InChI                1.03  FERIUCNNQQJTOY-UHFFFAOYSA-N                       
BUA SMILES_CANONICAL CACTVS               3.385 "CCCC(O)=O"                                       
BUA SMILES           CACTVS               3.385 "CCCC(O)=O"                                       
BUA SMILES_CANONICAL "OpenEye OEToolkits" 2.0.7 "CCCC(=O)O"                                       
BUA SMILES           "OpenEye OEToolkits" 2.0.7 "CCCC(=O)O"                                       
# 
_pdbx_chem_comp_identifier.comp_id           BUA 
_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        "butanoic 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 
BUA "Create component"   1999-07-08 RCSB 
BUA "Modify descriptor"  2011-06-04 RCSB 
BUA "Modify coordinates" 2021-06-23 RCSB 
BUA "Modify backbone"    2024-09-25 PDBE 
BUA "Modify PCM"         2024-09-27 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 BUA ?   None "Non-standard residue"           "Amino-acid side chain and backbone" N-terminal     ?  ?  ? ? 
2 BUA SER None "Covalent chemical modification" "Amino-acid side chain"              "Any position" C4 OG ? ? 
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