data_O18
# 
_chem_comp.id                                    O18 
_chem_comp.name                                  "O-palmitoleoyl serine" 
_chem_comp.type                                  non-polymer 
_chem_comp.pdbx_type                             HETAIN 
_chem_comp.formula                               "C19 H35 N O4" 
_chem_comp.mon_nstd_parent_comp_id               SER 
_chem_comp.pdbx_synonyms                         "(2S)-2-azanyl-3-[(Z)-hexadec-9-enoyl]oxy-propanoic acid" 
_chem_comp.pdbx_formal_charge                    0 
_chem_comp.pdbx_initial_date                     2020-01-17 
_chem_comp.pdbx_modified_date                    2025-07-24 
_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                        341.486 
_chem_comp.one_letter_code                       ? 
_chem_comp.three_letter_code                     O18 
_chem_comp.pdbx_model_coordinates_details        ? 
_chem_comp.pdbx_model_coordinates_missing_flag   Y 
_chem_comp.pdbx_ideal_coordinates_details        Corina 
_chem_comp.pdbx_ideal_coordinates_missing_flag   N 
_chem_comp.pdbx_model_coordinates_db_code        6XTZ 
_chem_comp.pdbx_subcomponent_list                ? 
_chem_comp.pdbx_processing_site                  PDBE 
_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 
O18 CA  C1  C 0 1 N N S N N N 20.178 11.358 -11.294 -7.862  -1.189 -0.138 CA  O18 1  
O18 CB  C2  C 0 1 N N N N N N 20.761 11.925 -10.010 -6.778  -0.172 0.225  CB  O18 2  
O18 C1  C3  C 0 1 N N N N N N 19.812 13.152 -8.221  -4.423  0.126  0.008  C1  O18 3  
O18 C2  C4  C 0 1 N N N N N N 18.653 13.233 -7.272  -3.052  -0.309 -0.440 C2  O18 4  
O18 C3  C5  C 0 1 N N N N N N 18.303 11.902 -6.620  -2.025  0.753  -0.044 C3  O18 5  
O18 C4  C6  C 0 1 N N N N N N 17.303 12.055 -5.484  -0.632  0.311  -0.498 C4  O18 6  
O18 C5  C7  C 0 1 N N N N N N 17.037 10.775 -4.708  0.395   1.374  -0.102 C5  O18 7  
O18 C6  C8  C 0 1 N N N N N N 16.165 10.975 -3.478  1.787   0.932  -0.557 C6  O18 8  
O18 C7  C9  C 0 1 N N N N N N 16.755 11.922 -2.446  2.815   1.994  -0.160 C7  O18 9  
O18 C8  C10 C 0 1 N N N N N N 15.864 12.151 -1.228  4.207   1.552  -0.615 C8  O18 10 
O18 C9  C11 C 0 1 N N N N N N 14.577 12.842 -1.557  5.219   2.598  -0.224 C9  O18 11 
O18 C10 C12 C 0 1 N N N N N N 14.239 14.068 -1.207  6.288   2.256  0.451  C10 O18 12 
O18 C11 C13 C 0 1 N N N N N N 15.075 15.024 -0.412  6.594   0.800  0.691  C11 O18 13 
O18 C12 C14 C 0 1 N N N N N N 14.275 16.195 0.157   8.015   0.492  0.215  C12 O18 14 
O18 C13 C15 C 0 1 N N N N N N 15.128 17.224 0.885   8.325   -0.986 0.458  C13 O18 15 
O18 C14 C16 C 0 1 N N N N N N 14.336 18.366 1.505   9.747   -1.294 -0.018 C14 O18 16 
O18 C15 C17 C 0 1 N N N N N N 13.542 19.191 0.511   10.057  -2.772 0.225  C15 O18 17 
O18 C16 C18 C 0 1 N N N N N N 12.842 20.373 1.145   11.478  -3.080 -0.251 C16 O18 18 
O18 C   C19 C 0 1 N N N N N N 19.778 9.941  -10.887 -9.179  -0.748 0.445  C   O18 19 
O18 N   N1  N 0 1 N N N N N N 19.028 12.122 -11.747 -7.979  -1.278 -1.600 N   O18 20 
O18 OG  O1  O 0 1 N N N N N N 19.693 12.116 -9.054  -5.488  -0.655 -0.235 OG  O18 21 
O18 O11 O2  O 0 1 N N N N N N 20.737 13.918 -8.238  -4.565  1.178  0.585  O11 O18 22 
O18 O   O3  O 0 1 N N N N N N 20.124 8.976  -11.563 -9.993  -0.191 -0.253 O   O18 23 
O18 HA  H1  H 0 1 N N N N N N 20.954 11.318 -12.073 -7.594  -2.165 0.265  HA  O18 24 
O18 HB3 H2  H 0 1 N N N N N N 21.502 11.223 -9.600  -7.000  0.783  -0.252 HB3 O18 25 
O18 HB2 H3  H 0 1 N N N N N N 21.246 12.890 -10.219 -6.752  -0.040 1.307  HB2 O18 26 
O18 H4  H4  H 0 1 N N N N N N 18.903 13.953 -6.479  -2.798  -1.256 0.036  H4  O18 27 
O18 H5  H5  H 0 1 N N N N N N 17.773 13.590 -7.828  -3.046  -0.434 -1.523 H5  O18 28 
O18 H6  H6  H 0 1 N N N N N N 17.871 11.238 -7.383  -2.279  1.700  -0.520 H6  O18 29 
O18 H7  H7  H 0 1 N N N N N N 19.224 11.452 -6.221  -2.031  0.878  1.039  H7  O18 30 
O18 H8  H8  H 0 1 N N N N N N 17.691 12.809 -4.783  -0.378  -0.636 -0.022 H8  O18 31 
O18 H9  H9  H 0 1 N N N N N N 16.350 12.405 -5.908  -0.626  0.186  -1.581 H9  O18 32 
O18 H10 H10 H 0 1 N N N N N N 16.535 10.061 -5.377  0.141   2.320  -0.578 H10 O18 33 
O18 H11 H11 H 0 1 N N N N N N 18.002 10.358 -4.385  0.389   1.498  0.981  H11 O18 34 
O18 H12 H12 H 0 1 N N N N N N 15.196 11.380 -3.804  2.042   -0.015 -0.080 H12 O18 35 
O18 H13 H13 H 0 1 N N N N N N 16.012 9.996  -3.001  1.793   0.807  -1.639 H13 O18 36 
O18 H14 H14 H 0 1 N N N N N N 17.712 11.503 -2.100  2.560   2.941  -0.636 H14 O18 37 
O18 H15 H15 H 0 1 N N N N N N 16.934 12.893 -2.931  2.809   2.119  0.923  H15 O18 38 
O18 H16 H16 H 0 1 N N N N N N 15.631 11.175 -0.777  4.461   0.605  -0.138 H16 O18 39 
O18 H17 H17 H 0 1 N N N N N N 16.416 12.767 -0.503  4.213   1.427  -1.697 H17 O18 40 
O18 H18 H18 H 0 1 N N N N N N 13.857 12.283 -2.136  5.062   3.630  -0.501 H18 O18 41 
O18 H19 H19 H 0 1 N N N N N N 13.267 14.416 -1.524  6.950   3.017  0.836  H19 O18 42 
O18 H20 H20 H 0 1 N N N N N N 15.534 14.475 0.424   6.511   0.581  1.755  H20 O18 43 
O18 H21 H21 H 0 1 N N N N N N 15.864 15.425 -1.065  5.884   0.184  0.138  H21 O18 44 
O18 H22 H22 H 0 1 N N N N N N 13.758 16.698 -0.673  8.097   0.710  -0.850 H22 O18 45 
O18 H23 H23 H 0 1 N N N N N N 13.532 15.797 0.864   8.724   1.108  0.768  H23 O18 46 
O18 H24 H24 H 0 1 N N N N N N 15.678 16.710 1.687   8.243   -1.204 1.523  H24 O18 47 
O18 H25 H25 H 0 1 N N N N N N 15.842 17.651 0.166   7.616   -1.602 -0.095 H25 O18 48 
O18 H26 H26 H 0 1 N N N N N N 15.042 19.034 2.020   9.828   -1.076 -1.083 H26 O18 49 
O18 H27 H27 H 0 1 N N N N N N 13.634 17.940 2.237   10.456  -0.678 0.535  H27 O18 50 
O18 H28 H28 H 0 1 N N N N N N 12.784 18.544 0.045   9.975   -2.990 1.290  H28 O18 51 
O18 H29 H29 H 0 1 N N N N N N 14.230 19.565 -0.262  9.347   -3.388 -0.328 H29 O18 52 
O18 H30 H30 H 0 1 N N N N N N 12.287 20.927 0.374   11.560  -2.862 -1.315 H30 O18 53 
O18 H31 H31 H 0 1 N N N N N N 12.142 20.015 1.915   12.188  -2.464 0.302  H31 O18 54 
O18 H32 H32 H 0 1 N N N N N N 13.588 21.036 1.607   11.699  -4.133 -0.078 H32 O18 55 
O18 H   H34 H 0 1 N N N N N N 19.320 13.043 -12.006 -8.643  -1.989 -1.867 H   O18 56 
O18 H2  H35 H 0 1 N N N N N N 18.617 11.668 -12.538 -8.226  -0.385 -1.998 H2  O18 57 
O18 OXT O4  O 0 1 N Y N N N N ?      ?      ?       -9.449  -0.974 1.740  OXT O18 58 
O18 HXT H33 H 0 1 N Y N N N N ?      ?      ?       -10.307 -0.673 2.069  HXT O18 59 
# 
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 
O18 N   CA  SING N N 1  
O18 O   C   DOUB N N 2  
O18 CA  C   SING N N 3  
O18 CA  CB  SING N N 4  
O18 CB  OG  SING N N 5  
O18 OG  C1  SING N N 6  
O18 O11 C1  DOUB N N 7  
O18 C1  C2  SING N N 8  
O18 C2  C3  SING N N 9  
O18 C3  C4  SING N N 10 
O18 C4  C5  SING N N 11 
O18 C5  C6  SING N N 12 
O18 C6  C7  SING N N 13 
O18 C7  C8  SING N N 14 
O18 C9  C8  SING N N 15 
O18 C9  C10 DOUB N Z 16 
O18 C10 C11 SING N N 17 
O18 C11 C12 SING N N 18 
O18 C12 C13 SING N N 19 
O18 C15 C16 SING N N 20 
O18 C15 C14 SING N N 21 
O18 C13 C14 SING N N 22 
O18 CA  HA  SING N N 23 
O18 CB  HB3 SING N N 24 
O18 CB  HB2 SING N N 25 
O18 C2  H4  SING N N 26 
O18 C2  H5  SING N N 27 
O18 C3  H6  SING N N 28 
O18 C3  H7  SING N N 29 
O18 C4  H8  SING N N 30 
O18 C4  H9  SING N N 31 
O18 C5  H10 SING N N 32 
O18 C5  H11 SING N N 33 
O18 C6  H12 SING N N 34 
O18 C6  H13 SING N N 35 
O18 C7  H14 SING N N 36 
O18 C7  H15 SING N N 37 
O18 C8  H16 SING N N 38 
O18 C8  H17 SING N N 39 
O18 C9  H18 SING N N 40 
O18 C10 H19 SING N N 41 
O18 C11 H20 SING N N 42 
O18 C11 H21 SING N N 43 
O18 C12 H22 SING N N 44 
O18 C12 H23 SING N N 45 
O18 C13 H24 SING N N 46 
O18 C13 H25 SING N N 47 
O18 C14 H26 SING N N 48 
O18 C14 H27 SING N N 49 
O18 C15 H28 SING N N 50 
O18 C15 H29 SING N N 51 
O18 C16 H30 SING N N 52 
O18 C16 H31 SING N N 53 
O18 C16 H32 SING N N 54 
O18 N   H   SING N N 55 
O18 N   H2  SING N N 56 
O18 C   OXT SING N N 57 
O18 OXT HXT SING N N 58 
# 
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 
O18 InChI            InChI                1.06  "InChI=1S/C19H35NO4/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-18(21)24-16-17(20)19(22)23/h7-8,17H,2-6,9-16,20H2,1H3,(H,22,23)/b8-7-/t17-/m0/s1" 
O18 InChIKey         InChI                1.06  BEQLUQLZPXGDLC-QWPQOLDESA-N                                                                                                                
O18 SMILES_CANONICAL CACTVS               3.385 "CCCCCC\C=C/CCCCCCCC(=O)OC[C@H](N)C(O)=O"                                                                                                  
O18 SMILES           CACTVS               3.385 "CCCCCCC=CCCCCCCCC(=O)OC[CH](N)C(O)=O"                                                                                                     
O18 SMILES_CANONICAL "OpenEye OEToolkits" 2.0.7 "CCCCCC/C=C\CCCCCCCC(=O)OC[C@@H](C(=O)O)N"                                                                                                 
O18 SMILES           "OpenEye OEToolkits" 2.0.7 "CCCCCCC=CCCCCCCCC(=O)OCC(C(=O)O)N"                                                                                                        
# 
_pdbx_chem_comp_identifier.comp_id           O18 
_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        "(2~{S})-2-azanyl-3-[(~{Z})-hexadec-9-enoyl]oxy-propanoic acid" 
# 
_pdbx_chem_comp_synonyms.ordinal      1 
_pdbx_chem_comp_synonyms.comp_id      O18 
_pdbx_chem_comp_synonyms.name         "(2S)-2-azanyl-3-[(Z)-hexadec-9-enoyl]oxy-propanoic acid" 
_pdbx_chem_comp_synonyms.provenance   PDB 
_pdbx_chem_comp_synonyms.type         ? 
# 
loop_
_pdbx_chem_comp_audit.comp_id 
_pdbx_chem_comp_audit.action_type 
_pdbx_chem_comp_audit.date 
_pdbx_chem_comp_audit.processing_site 
O18 "Create component"         2020-01-17 PDBE 
O18 "Initial release"          2020-07-29 RCSB 
O18 "Modify descriptor"        2023-09-18 PDBE 
O18 "Modify leaving atom flag" 2023-09-18 PDBE 
O18 "Modify PCM"               2025-07-24 RCSB 
# 
_pdbx_chem_comp_pcm.pcm_id                             1 
_pdbx_chem_comp_pcm.comp_id                            O18 
_pdbx_chem_comp_pcm.modified_residue_id                SER 
_pdbx_chem_comp_pcm.type                               None 
_pdbx_chem_comp_pcm.category                           "Non-standard residue" 
_pdbx_chem_comp_pcm.position                           "Amino-acid backbone" 
_pdbx_chem_comp_pcm.polypeptide_position               "Any 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      ? 
# 
