data_03Y
# 
_chem_comp.id                                    03Y 
_chem_comp.name                                  2-methyl-L-cysteine 
_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                     2011-05-04 
_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                        135.185 
_chem_comp.one_letter_code                       C 
_chem_comp.three_letter_code                     03Y 
_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        3RQD 
_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 
03Y CB   CB   C 0 1 N N N N N N -2.349 -41.089 21.205 0.841  0.807  -0.275 CB   03Y 1  
03Y C    C    C 0 1 N N N Y N Y -0.831 -39.209 21.826 -1.577 0.310  -0.039 C    03Y 2  
03Y CA   CA   C 0 1 N N R Y N N -2.066 -39.587 20.996 -0.189 -0.259 0.103  CA   03Y 3  
03Y CM   CM   C 0 1 N N N N N N -3.291 -38.742 21.409 0.038  -0.697 1.551  CM   03Y 4  
03Y N    N    N 0 1 N N N Y Y N -1.653 -39.308 19.581 -0.042 -1.418 -0.788 N    03Y 5  
03Y O    O    O 0 1 N N N Y N Y -0.719 -39.471 23.001 -1.752 1.503  0.045  O    03Y 6  
03Y SG   SG   S 0 1 N N N N N N -1.425 -41.841 19.862 2.512  0.122  -0.105 SG   03Y 7  
03Y HB2  HB2  H 0 1 N N N N N N -2.004 -41.440 22.189 0.679  1.119  -1.307 HB2  03Y 8  
03Y HB3  HB3  H 0 1 N N N N N N -3.423 -41.318 21.144 0.732  1.667  0.386  HB3  03Y 9  
03Y H21  H21  H 0 1 N N N N N N -3.071 -37.676 21.253 -0.071 0.163  2.212  H21  03Y 10 
03Y H21A H21A H 0 0 N N N N N N -4.158 -39.030 20.797 -0.696 -1.457 1.820  H21A 03Y 11 
03Y H21B H21B H 0 0 N N N N N N -3.517 -38.918 22.471 1.042  -1.109 1.653  H21B 03Y 12 
03Y H    H    H 0 1 N N N Y Y N -1.476 -38.330 19.472 -0.668 -2.163 -0.518 H    03Y 13 
03Y H2   H2   H 0 1 N Y N Y Y N -0.822 -39.823 19.369 -0.188 -1.155 -1.751 H2   03Y 14 
03Y HG   HG   H 0 1 N N N N N N -1.667 -43.106 20.043 3.299  1.151  -0.463 HG   03Y 15 
03Y OXT  OXT  O 0 1 N Y N Y N Y 0.369  -38.525 21.457 -2.619 -0.507 -0.258 OXT  03Y 16 
03Y HXT  HXT  H 0 1 N Y N Y N Y 0.938  -38.452 22.214 -3.490 -0.096 -0.342 HXT  03Y 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 
03Y CB  HB2  SING N N 1  
03Y CB  HB3  SING N N 2  
03Y C   O    DOUB N N 3  
03Y CA  CB   SING N N 4  
03Y CA  C    SING N N 5  
03Y CA  CM   SING N N 6  
03Y CM  H21  SING N N 7  
03Y CM  H21A SING N N 8  
03Y CM  H21B SING N N 9  
03Y N   CA   SING N N 10 
03Y N   H    SING N N 11 
03Y N   H2   SING N N 12 
03Y SG  CB   SING N N 13 
03Y SG  HG   SING N N 14 
03Y C   OXT  SING N N 15 
03Y 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 
03Y SMILES           ACDLabs              12.01 "O=C(O)C(N)(C)CS"                                                    
03Y SMILES_CANONICAL CACTVS               3.370 "C[C@](N)(CS)C(O)=O"                                                 
03Y SMILES           CACTVS               3.370 "C[C](N)(CS)C(O)=O"                                                  
03Y SMILES_CANONICAL "OpenEye OEToolkits" 1.7.2 "C[C@](CS)(C(=O)O)N"                                                 
03Y SMILES           "OpenEye OEToolkits" 1.7.2 "CC(CS)(C(=O)O)N"                                                    
03Y InChI            InChI                1.03  "InChI=1S/C4H9NO2S/c1-4(5,2-8)3(6)7/h8H,2,5H2,1H3,(H,6,7)/t4-/m0/s1" 
03Y InChIKey         InChI                1.03  NZBONMFLYFGTAC-BYPYZUCNSA-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 
03Y "SYSTEMATIC NAME" ACDLabs              12.01 2-methyl-L-cysteine                                
03Y "SYSTEMATIC NAME" "OpenEye OEToolkits" 1.7.2 "(2R)-2-azanyl-2-methyl-3-sulfanyl-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 
03Y "Create component"  2011-05-04 RCSB 
03Y "Modify descriptor" 2011-06-04 RCSB 
03Y "Modify backbone"   2023-11-03 PDBE 
03Y "Modify PCM"        2024-09-27 PDBE 
# 
_pdbx_chem_comp_pcm.pcm_id                             1 
_pdbx_chem_comp_pcm.comp_id                            03Y 
_pdbx_chem_comp_pcm.modified_residue_id                CYS 
_pdbx_chem_comp_pcm.type                               Methylation 
_pdbx_chem_comp_pcm.category                           "Named protein modification" 
_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      ? 
# 
