data_CSU # _chem_comp.id CSU _chem_comp.name "CYSTEINE-S-SULFONIC ACID" _chem_comp.type "L-PEPTIDE LINKING" _chem_comp.pdbx_type ATOMP _chem_comp.formula "C3 H7 N O5 S2" _chem_comp.mon_nstd_parent_comp_id CYS _chem_comp.pdbx_synonyms ? _chem_comp.pdbx_formal_charge 0 _chem_comp.pdbx_initial_date 2000-08-22 _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 201.221 _chem_comp.one_letter_code C _chem_comp.three_letter_code CSU _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 ? _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 CSU N N N 0 1 N N N Y Y N -3.100 -11.328 -7.108 3.035 -1.472 -0.440 N CSU 1 CSU CA CA C 0 1 N N R Y N N -3.550 -10.806 -5.825 1.665 -1.164 -0.766 CA CSU 2 CSU CB CB C 0 1 N N N N N N -3.869 -11.955 -4.866 1.076 -0.107 0.172 CB CSU 3 CSU SG SG S 0 1 N N N N N N -4.358 -11.244 -3.276 1.832 1.542 -0.014 SG CSU 4 CSU S S S 0 1 N N N N N N -4.705 -12.988 -2.293 0.781 2.669 1.403 S CSU 5 CSU C C C 0 1 N N N Y N Y -2.518 -9.855 -5.215 1.500 -0.794 -2.231 C CSU 6 CSU O O O 0 1 N N N Y N Y -2.843 -8.710 -4.897 2.436 -0.664 -3.010 O CSU 7 CSU OXT OXT O 0 1 N Y N Y N Y ? ? ? 0.208 -0.605 -2.593 OXT CSU 8 CSU OD1 OD1 O 0 1 N N N N N N -5.876 -13.636 -2.856 -0.600 2.740 0.967 OD1 CSU 9 CSU OD2 OD2 O 0 1 N N N N N N -3.452 -13.703 -2.142 1.424 4.162 1.274 OD2 CSU 10 CSU OD3 OD3 O 0 1 N N N N N N -5.070 -12.442 -0.940 1.121 2.148 2.713 OD3 CSU 11 CSU H 1HN H 0 1 N N N Y Y N -2.455 -10.685 -7.522 3.758 -1.236 -1.098 H CSU 12 CSU H2 2HN H 0 1 N Y N Y Y N -3.886 -11.448 -7.714 3.225 -2.090 0.331 H2 CSU 13 CSU HA HA H 0 1 N N N Y N N -4.470 -10.227 -5.996 1.117 -2.104 -0.627 HA CSU 14 CSU HB2 1HB H 0 1 N N N N N N -2.986 -12.599 -4.738 1.217 -0.414 1.214 HB2 CSU 15 CSU HB3 2HB H 0 1 N N N N N N -4.690 -12.565 -5.272 0.000 0.000 0.000 HB3 CSU 16 CSU HXT HXT H 0 1 N Y N Y N Y 0.641 0.590 0.379 0.125 -0.356 -3.538 HXT CSU 17 CSU HD2 HD2 H 0 1 N N N N N N -2.734 -13.082 -2.109 2.394 4.220 1.447 HD2 CSU 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 CSU N CA SING N N 1 CSU N H SING N N 2 CSU N H2 SING N N 3 CSU CA CB SING N N 4 CSU CA C SING N N 5 CSU CA HA SING N N 6 CSU CB SG SING N N 7 CSU CB HB2 SING N N 8 CSU CB HB3 SING N N 9 CSU SG S SING N N 10 CSU S OD1 DOUB N N 11 CSU S OD2 SING N N 12 CSU S OD3 DOUB N N 13 CSU C O DOUB N N 14 CSU C OXT SING N N 15 CSU OXT HXT SING N N 16 CSU OD2 HD2 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 CSU SMILES ACDLabs 10.04 "O=S(=O)(O)SCC(C(=O)O)N" CSU SMILES_CANONICAL CACTVS 3.341 "N[C@@H](CS[S](O)(=O)=O)C(O)=O" CSU SMILES CACTVS 3.341 "N[CH](CS[S](O)(=O)=O)C(O)=O" CSU SMILES_CANONICAL "OpenEye OEToolkits" 1.5.0 "C([C@@H](C(=O)O)N)SS(=O)(=O)O" CSU SMILES "OpenEye OEToolkits" 1.5.0 "C(C(C(=O)O)N)SS(=O)(=O)O" CSU InChI InChI 1.03 "InChI=1S/C3H7NO5S2/c4-2(3(5)6)1-10-11(7,8)9/h2H,1,4H2,(H,5,6)(H,7,8,9)/t2-/m0/s1" CSU InChIKey InChI 1.03 NOKPBJYHPHHWAN-REOHCLBHSA-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 CSU "SYSTEMATIC NAME" ACDLabs 10.04 "3-(sulfosulfanyl)-L-alanine" CSU "SYSTEMATIC NAME" "OpenEye OEToolkits" 1.5.0 "(2R)-2-amino-3-sulfosulfanyl-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 CSU "Create component" 2000-08-22 RCSB CSU "Modify descriptor" 2011-06-04 RCSB CSU "Modify backbone" 2023-11-03 PDBE CSU "Modify PCM" 2024-09-27 PDBE # _pdbx_chem_comp_pcm.pcm_id 1 _pdbx_chem_comp_pcm.comp_id CSU _pdbx_chem_comp_pcm.modified_residue_id CYS _pdbx_chem_comp_pcm.type Sulfation _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 ? #