data_CY4
# 
_chem_comp.id                                    CY4 
_chem_comp.name                                  S-BUTYRYL-CYSTEIN 
_chem_comp.type                                  "L-PEPTIDE LINKING" 
_chem_comp.pdbx_type                             ATOMP 
_chem_comp.formula                               "C7 H13 N O3 S" 
_chem_comp.mon_nstd_parent_comp_id               CYS 
_chem_comp.pdbx_synonyms                         ? 
_chem_comp.pdbx_formal_charge                    0 
_chem_comp.pdbx_initial_date                     2002-07-10 
_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                        191.248 
_chem_comp.one_letter_code                       C 
_chem_comp.three_letter_code                     CY4 
_chem_comp.pdbx_model_coordinates_details        ? 
_chem_comp.pdbx_model_coordinates_missing_flag   Y 
_chem_comp.pdbx_ideal_coordinates_details        ? 
_chem_comp.pdbx_ideal_coordinates_missing_flag   N 
_chem_comp.pdbx_model_coordinates_db_code        1M4T 
_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 
CY4 O    O    O 0 1 N N N Y N Y 25.720 -11.986 6.669  7.977  -2.635 2.996 O    CY4 1  
CY4 C    C    C 0 1 N N N Y N Y 24.584 -11.740 7.131  7.216  -2.380 3.921 C    CY4 2  
CY4 CA   CA   C 0 1 N N R Y N N 24.290 -11.990 8.601  6.828  -0.969 4.331 CA   CY4 3  
CY4 N    N    N 0 1 N N N Y Y N 23.054 -11.366 9.038  7.563  0.027  3.592 N    CY4 4  
CY4 CB   CB   C 0 1 N N N N N N 24.141 -13.507 8.883  5.317  -0.736 4.260 CB   CY4 5  
CY4 SG   SG   S 0 1 N N N N N N 24.244 -13.776 10.690 4.620  -0.981 2.612 SG   CY4 6  
CY4 CA1  CA1  C 0 1 N N N N N N 22.495 -13.955 10.961 2.909  -0.682 2.938 CA1  CY4 7  
CY4 CA2  CA2  C 0 1 N N N N N N 22.121 -14.508 12.346 2.036  -0.817 1.706 CA2  CY4 8  
CY4 OA1  OA1  O 0 1 N N N N N N 21.656 -13.578 10.199 2.489  -0.394 4.052 OA1  CY4 9  
CY4 CA3  CA3  C 0 1 N N N N N N 23.078 -15.616 12.764 0.561  -0.576 2.020 CA3  CY4 10 
CY4 CA4  CA4  C 0 1 N N N N N N 22.651 -16.994 12.254 -0.300 -0.682 0.772 CA4  CY4 11 
CY4 OXT  OXT  O 0 1 N Y N Y N Y ?      ?       ?      6.622  -3.338 4.673 OXT  CY4 12 
CY4 HA   HA   H 0 1 N N N Y N N 25.152 -11.550 9.154  7.155  -0.854 5.372 HA   CY4 13 
CY4 H    H    H 0 1 N N N Y Y N 22.856 -11.533 10.024 7.292  0.993  3.671 H    CY4 14 
CY4 H2   HN2  H 0 1 N Y N Y Y N 22.270 -11.656 8.453  8.190  -0.270 2.864 H2   CY4 15 
CY4 HB2  1HB  H 0 1 N N N N N N 23.212 -13.935 8.439  5.085  0.291  4.562 HB2  CY4 16 
CY4 HB3  2HB  H 0 1 N N N N N N 24.878 -14.121 8.316  4.793  -1.410 4.945 HB3  CY4 17 
CY4 HA22 1HA2 H 0 0 N N N N N N 22.067 -13.699 13.111 2.373  -0.090 0.957 HA22 CY4 18 
CY4 HA23 2HA2 H 0 0 N N N N N N 21.058 -14.845 12.382 2.163  -1.826 1.297 HA23 CY4 19 
CY4 HA32 1HA3 H 0 0 N N N N N N 24.122 -15.380 12.451 0.213  -1.305 2.763 HA32 CY4 20 
CY4 HA33 2HA3 H 0 0 N N N N N N 23.218 -15.625 13.870 0.431  0.417  2.466 HA33 CY4 21 
CY4 HA41 1HA4 H 0 0 N N N N N N 23.351 -17.805 12.560 -1.351 -0.504 1.021 HA41 CY4 22 
CY4 HA42 2HA4 H 0 0 N N N N N N 21.607 -17.229 12.567 0.001  0.058  0.024 HA42 CY4 23 
CY4 HA43 3HA4 H 0 0 N N N N N N 22.510 -16.984 11.147 -0.221 -1.677 0.324 HA43 CY4 24 
CY4 HXT  HXT  H 0 1 N Y N Y N Y -0.862 0.186   0.350  6.877  -4.240 4.385 HXT  CY4 25 
# 
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 
CY4 O   C    DOUB N N 1  
CY4 C   CA   SING N N 2  
CY4 C   OXT  SING N N 3  
CY4 CA  N    SING N N 4  
CY4 CA  CB   SING N N 5  
CY4 CA  HA   SING N N 6  
CY4 N   H    SING N N 7  
CY4 N   H2   SING N N 8  
CY4 CB  SG   SING N N 9  
CY4 CB  HB2  SING N N 10 
CY4 CB  HB3  SING N N 11 
CY4 SG  CA1  SING N N 12 
CY4 CA1 CA2  SING N N 13 
CY4 CA1 OA1  DOUB N N 14 
CY4 CA2 CA3  SING N N 15 
CY4 CA2 HA22 SING N N 16 
CY4 CA2 HA23 SING N N 17 
CY4 CA3 CA4  SING N N 18 
CY4 CA3 HA32 SING N N 19 
CY4 CA3 HA33 SING N N 20 
CY4 CA4 HA41 SING N N 21 
CY4 CA4 HA42 SING N N 22 
CY4 CA4 HA43 SING N N 23 
CY4 OXT HXT  SING N N 24 
# 
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 
CY4 SMILES           ACDLabs              10.04 "O=C(O)C(N)CSC(=O)CCC"                                                               
CY4 SMILES_CANONICAL CACTVS               3.341 "CCCC(=O)SC[C@H](N)C(O)=O"                                                           
CY4 SMILES           CACTVS               3.341 "CCCC(=O)SC[CH](N)C(O)=O"                                                            
CY4 SMILES_CANONICAL "OpenEye OEToolkits" 1.5.0 "CCCC(=O)SC[C@@H](C(=O)O)N"                                                          
CY4 SMILES           "OpenEye OEToolkits" 1.5.0 "CCCC(=O)SCC(C(=O)O)N"                                                               
CY4 InChI            InChI                1.03  "InChI=1S/C7H13NO3S/c1-2-3-6(9)12-4-5(8)7(10)11/h5H,2-4,8H2,1H3,(H,10,11)/t5-/m0/s1" 
CY4 InChIKey         InChI                1.03  QARMATOLSBVIJD-YFKPBYRVSA-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 
CY4 "SYSTEMATIC NAME" ACDLabs              10.04 S-butanoyl-L-cysteine                            
CY4 "SYSTEMATIC NAME" "OpenEye OEToolkits" 1.5.0 "(2R)-2-amino-3-butanoylsulfanyl-propanoic 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 
CY4 "Create component"  2002-07-10 RCSB 
CY4 "Modify descriptor" 2011-06-04 RCSB 
CY4 "Modify backbone"   2023-11-03 PDBE 
CY4 "Modify PCM"        2024-09-27 PDBE 
# 
_pdbx_chem_comp_pcm.pcm_id                             1 
_pdbx_chem_comp_pcm.comp_id                            CY4 
_pdbx_chem_comp_pcm.modified_residue_id                CYS 
_pdbx_chem_comp_pcm.type                               Butyrylation 
_pdbx_chem_comp_pcm.category                           "Named protein 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               ? 
_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      ? 
# 
