data_SMC
# 
_chem_comp.id                                    SMC 
_chem_comp.name                                  S-METHYLCYSTEINE 
_chem_comp.type                                  "L-PEPTIDE LINKING" 
_chem_comp.pdbx_type                             ATOMP 
_chem_comp.formula                               "C4 H9 N O2 S" 
_chem_comp.mon_nstd_parent_comp_id               CYS 
_chem_comp.pdbx_synonyms                         ? 
_chem_comp.pdbx_formal_charge                    0 
_chem_comp.pdbx_initial_date                     1999-07-08 
_chem_comp.pdbx_modified_date                    2023-11-03 
_chem_comp.pdbx_ambiguous_flag                   N 
_chem_comp.pdbx_release_status                   REL 
_chem_comp.pdbx_replaced_by                      ? 
_chem_comp.pdbx_replaces                         CYM 
_chem_comp.formula_weight                        135.185 
_chem_comp.one_letter_code                       C 
_chem_comp.three_letter_code                     SMC 
_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        1CZI 
_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.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 
SMC N    N    N 0 1 N N N Y Y N 89.125 16.244 32.120 -1.756 0.147  -0.531 N    SMC 1  
SMC CA   CA   C 0 1 N N R Y N N 89.871 17.282 31.364 -0.324 0.459  -0.633 CA   SMC 2  
SMC CB   CB   C 0 1 N N N N N N 89.608 17.089 29.876 0.430  -0.233 0.503  CB   SMC 3  
SMC SG   SG   S 0 1 N N N N N N 91.058 16.158 29.336 -0.205 0.353  2.097  SG   SMC 4  
SMC CS   CS   C 0 1 N N N N N N 91.343 16.417 27.571 0.840  -0.607 3.226  CS   SMC 5  
SMC C    C    C 0 1 N N N Y N Y 89.258 18.656 31.701 0.203  -0.028 -1.957 C    SMC 6  
SMC O    O    O 0 1 N N N Y N Y 88.481 19.181 30.903 -0.293 -0.993 -2.487 O    SMC 7  
SMC OXT  OXT  O 0 1 N Y N Y N Y 89.536 19.272 32.813 1.226  0.609  -2.548 OXT  SMC 8  
SMC H    1HN  H 0 1 N N N Y Y N 89.301 16.373 33.116 -2.041 0.395  0.403  H    SMC 9  
SMC H2   2HN  H 0 1 N Y N Y Y N 89.344 15.299 31.804 -1.840 -0.855 -0.604 H2   SMC 10 
SMC HA   HA   H 0 1 N N N Y N N 90.955 17.215 31.615 -0.181 1.537  -0.559 HA   SMC 11 
SMC HB2  1HB  H 0 1 N N N N N N 88.629 16.613 29.631 1.492  -0.002 0.427  HB2  SMC 12 
SMC HB3  2HB  H 0 1 N N N N N N 89.418 18.029 29.308 0.287  -1.311 0.429  HB3  SMC 13 
SMC HCS1 1HCS H 0 0 N N N N N N 92.238 15.842 27.237 0.579  -0.365 4.256  HCS1 SMC 14 
SMC HCS2 2HCS H 0 0 N N N N N N 90.440 16.172 26.963 0.681  -1.671 3.051  HCS2 SMC 15 
SMC HCS3 3HCS H 0 0 N N N N N N 91.424 17.499 27.316 1.887  -0.361 3.049  HCS3 SMC 16 
SMC HXT  HXT  H 0 1 N Y N Y N Y 89.158 20.118 33.020 1.564  0.296  -3.398 HXT  SMC 17 
# 
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 
SMC N   CA   SING N N 1  
SMC N   H    SING N N 2  
SMC N   H2   SING N N 3  
SMC CA  CB   SING N N 4  
SMC CA  C    SING N N 5  
SMC CA  HA   SING N N 6  
SMC CB  SG   SING N N 7  
SMC CB  HB2  SING N N 8  
SMC CB  HB3  SING N N 9  
SMC SG  CS   SING N N 10 
SMC CS  HCS1 SING N N 11 
SMC CS  HCS2 SING N N 12 
SMC CS  HCS3 SING N N 13 
SMC C   O    DOUB N N 14 
SMC C   OXT  SING N N 15 
SMC OXT HXT  SING N N 16 
# 
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 
SMC SMILES           ACDLabs              10.04 "O=C(O)C(N)CSC"                                                      
SMC SMILES_CANONICAL CACTVS               3.341 "CSC[C@H](N)C(O)=O"                                                  
SMC SMILES           CACTVS               3.341 "CSC[CH](N)C(O)=O"                                                   
SMC SMILES_CANONICAL "OpenEye OEToolkits" 1.5.0 "CSC[C@@H](C(=O)O)N"                                                 
SMC SMILES           "OpenEye OEToolkits" 1.5.0 "CSCC(C(=O)O)N"                                                      
SMC InChI            InChI                1.03  "InChI=1S/C4H9NO2S/c1-8-2-3(5)4(6)7/h3H,2,5H2,1H3,(H,6,7)/t3-/m0/s1" 
SMC InChIKey         InChI                1.03  IDIDJDIHTAOVLG-VKHMYHEASA-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 
SMC "SYSTEMATIC NAME" ACDLabs              10.04 S-methyl-L-cysteine                            
SMC "SYSTEMATIC NAME" "OpenEye OEToolkits" 1.5.0 "(2R)-2-amino-3-methylsulfanyl-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 
SMC "Create component"  1999-07-08 RCSB 
SMC "Modify descriptor" 2011-06-04 RCSB 
SMC "Modify backbone"   2023-11-03 PDBE 
# 
