data_SCH
# 
_chem_comp.id                                    SCH 
_chem_comp.name                                  S-METHYL-THIO-CYSTEINE 
_chem_comp.type                                  "L-PEPTIDE LINKING" 
_chem_comp.pdbx_type                             ATOMP 
_chem_comp.formula                               "C4 H9 N O2 S2" 
_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                    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                        167.250 
_chem_comp.one_letter_code                       C 
_chem_comp.three_letter_code                     SCH 
_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        1AEX 
_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 
SCH N   N   N 0 1 N N N Y Y N 12.893 20.925 16.214 0.462  1.030  0.971  N   SCH 1  
SCH CA  CA  C 0 1 N N R Y N N 14.090 21.534 15.618 1.140  -0.186 0.502  CA  SCH 2  
SCH CB  CB  C 0 1 N N N N N N 13.700 22.526 14.501 0.283  -0.869 -0.565 CB  SCH 3  
SCH SG  SG  S 0 1 N N N N N N 12.747 24.016 15.018 -1.327 -1.310 0.144  SG  SCH 4  
SCH SD  SD  S 0 1 N N N N N N 11.171 24.053 13.733 -2.230 0.512  0.406  SD  SCH 5  
SCH CE  CE  C 0 1 N N N N N N 10.020 22.860 14.484 -2.969 0.838  -1.218 CE  SCH 6  
SCH C   C   C 0 1 N N N Y N Y 14.897 22.283 16.680 2.478  0.181  -0.087 C   SCH 7  
SCH O   O   O 0 1 N N N Y N Y 14.375 22.611 17.749 2.689  1.314  -0.448 O   SCH 8  
SCH OXT OXT O 0 1 N Y N Y N Y 16.159 22.573 16.384 3.435  -0.752 -0.211 OXT SCH 9  
SCH H   H   H 0 1 N N N Y Y N 13.166 20.287 16.934 0.977  1.465  1.721  H   SCH 10 
SCH H2  HN  H 0 1 N Y N Y Y N 12.315 21.641 16.605 0.315  1.678  0.211  H2  SCH 11 
SCH HA  HA  H 0 1 N N N Y N N 14.700 20.723 15.193 1.287  -0.866 1.341  HA  SCH 12 
SCH HB2 HB1 H 0 1 N N N N N N 14.634 22.881 14.041 0.136  -0.189 -1.404 HB2 SCH 13 
SCH HB3 HB2 H 0 1 N N N N N N 13.077 21.976 13.781 0.786  -1.771 -0.912 HB3 SCH 14 
SCH HE1 HE1 H 0 1 N N N N N N 9.111  22.790 13.869 -2.186 0.864  -1.975 HE1 SCH 15 
SCH HE2 HE2 H 0 1 N N N N N N 10.501 21.872 14.541 -3.681 0.049  -1.458 HE2 SCH 16 
SCH HE3 HE3 H 0 1 N N N N N N 9.753  23.196 15.497 -3.485 1.798  -1.196 HE3 SCH 17 
SCH HXT HXT H 0 1 N Y N Y N Y 16.553 23.049 17.106 4.277  -0.470 -0.594 HXT SCH 18 
# 
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 
SCH N   CA  SING N N 1  
SCH N   H   SING N N 2  
SCH N   H2  SING N N 3  
SCH CA  CB  SING N N 4  
SCH CA  C   SING N N 5  
SCH CA  HA  SING N N 6  
SCH CB  SG  SING N N 7  
SCH CB  HB2 SING N N 8  
SCH CB  HB3 SING N N 9  
SCH SG  SD  SING N N 10 
SCH SD  CE  SING N N 11 
SCH CE  HE1 SING N N 12 
SCH CE  HE2 SING N N 13 
SCH CE  HE3 SING N N 14 
SCH C   O   DOUB N N 15 
SCH C   OXT SING N N 16 
SCH OXT HXT SING N N 17 
# 
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 
SCH SMILES           ACDLabs              10.04 "O=C(O)C(N)CSSC"                                                        
SCH SMILES_CANONICAL CACTVS               3.370 "CSSC[C@H](N)C(O)=O"                                                    
SCH SMILES           CACTVS               3.370 "CSSC[CH](N)C(O)=O"                                                     
SCH SMILES_CANONICAL "OpenEye OEToolkits" 1.7.0 "CSSC[C@@H](C(=O)O)N"                                                   
SCH SMILES           "OpenEye OEToolkits" 1.7.0 "CSSCC(C(=O)O)N"                                                        
SCH InChI            InChI                1.03  "InChI=1S/C4H9NO2S2/c1-8-9-2-3(5)4(6)7/h3H,2,5H2,1H3,(H,6,7)/t3-/m0/s1" 
SCH InChIKey         InChI                1.03  PYFNLWPQPNXHCS-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 
SCH "SYSTEMATIC NAME" ACDLabs              10.04 "3-(methyldisulfanyl)-L-alanine"                  
SCH "SYSTEMATIC NAME" "OpenEye OEToolkits" 1.7.0 "(2R)-2-azanyl-3-methyldisulfanyl-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 
SCH "Other modification" 1999-07-08 RCSB 
SCH "Other modification" 2010-09-09 RCSB 
SCH "Modify descriptor"  2011-06-04 RCSB 
SCH "Modify backbone"    2023-11-03 PDBE 
SCH "Modify PCM"         2024-09-27 PDBE 
# 
_pdbx_chem_comp_pcm.pcm_id                             1 
_pdbx_chem_comp_pcm.comp_id                            SCH 
_pdbx_chem_comp_pcm.modified_residue_id                CYS 
_pdbx_chem_comp_pcm.type                               Methylsulfanylation 
_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     PTM-0104 
_pdbx_chem_comp_pcm.uniprot_generic_ptm_accession      ? 
# 
