data_A1CTZ # _chem_comp.id A1CTZ _chem_comp.name "(2S)-1,3-selenazolidine-2-carboxylic acid" _chem_comp.type "L-peptide linking" _chem_comp.pdbx_type ATOMP _chem_comp.formula "C4 H7 N O2 Se" _chem_comp.mon_nstd_parent_comp_id ? _chem_comp.pdbx_synonyms ? _chem_comp.pdbx_formal_charge 0 _chem_comp.pdbx_initial_date 2025-09-17 _chem_comp.pdbx_modified_date 2026-09-18 _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 180.064 _chem_comp.one_letter_code ? _chem_comp.three_letter_code A1CTZ _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 9YBC _chem_comp.pdbx_subcomponent_list ? _chem_comp.pdbx_processing_site RCSB _chem_comp.pdbx_pcm Y _chem_comp.pdbx_comp_type ? # 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_n_terminal_atom_flag _chem_comp_atom.pdbx_backbone_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 A1CTZ N N1 N 0 1 N N N N N N 8.322 16.049 15.010 0.067 1.678 -0.298 N A1CTZ 1 A1CTZ CA C1 C 0 1 N N S N N N 6.839 16.353 14.907 0.581 0.537 0.521 CA A1CTZ 2 A1CTZ C C2 C 0 1 N N N N N N 6.187 16.311 13.594 1.947 0.101 0.060 C A1CTZ 3 A1CTZ O O1 O 0 1 N N N N N N 4.993 16.393 13.579 2.914 0.309 0.754 O A1CTZ 4 A1CTZ CG C3 C 0 1 N N N N N N 8.356 18.208 16.090 -2.212 0.564 -0.065 CG A1CTZ 5 A1CTZ CD C4 C 0 1 N N N N N N 9.056 17.226 15.322 -1.380 1.858 -0.208 CD A1CTZ 6 A1CTZ SE SE1 SE 0 0 N N N N N N 6.632 18.278 15.309 -0.803 -0.828 0.086 SE A1CTZ 7 A1CTZ H H1 H 0 1 N Y N N N N 8.469 15.370 15.730 0.552 2.533 -0.072 H A1CTZ 8 A1CTZ HA H3 H 0 1 N N N N N N 6.264 15.814 15.674 0.581 0.779 1.584 HA A1CTZ 9 A1CTZ HG2 H5 H 0 1 N N N N N N 8.855 19.186 16.019 -2.825 0.595 0.836 HG2 A1CTZ 10 A1CTZ HG3 H6 H 0 1 N N N N N N 8.293 17.904 17.145 -2.830 0.401 -0.948 HG3 A1CTZ 11 A1CTZ HD2 H7 H 0 1 N N N N N N 9.949 16.927 15.890 -1.590 2.495 0.652 HD2 A1CTZ 12 A1CTZ HD3 H8 H 0 1 N N N N N N 9.363 17.694 14.375 -1.714 2.381 -1.104 HD3 A1CTZ 13 A1CTZ OXT O1 O 0 1 N Y N N N N 6.910 16.196 12.476 2.091 -0.518 -1.122 OXT A1CTZ 14 A1CTZ HXT H2 H 0 1 N Y N N N N 6.331 16.193 11.723 2.987 -0.779 -1.375 HXT A1CTZ 15 # 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 A1CTZ O C DOUB N N 1 A1CTZ C CA SING N N 2 A1CTZ CA N SING N N 3 A1CTZ CA SE SING N N 4 A1CTZ N CD SING N N 5 A1CTZ SE CG SING N N 6 A1CTZ CD CG SING N N 7 A1CTZ N H SING N N 8 A1CTZ CA HA SING N N 9 A1CTZ CG HG2 SING N N 10 A1CTZ CG HG3 SING N N 11 A1CTZ CD HD2 SING N N 12 A1CTZ CD HD3 SING N N 13 A1CTZ C OXT SING N N 14 A1CTZ OXT HXT SING N N 15 # 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 A1CTZ SMILES ACDLabs 14.52 "O=C(O)C1NCC[Se]1" A1CTZ InChI InChI 1.06 "InChI=1S/C4H7NO2Se/c6-4(7)3-5-1-2-8-3/h3,5H,1-2H2,(H,6,7)/t3-/m0/s1" A1CTZ InChIKey InChI 1.06 ODDSNSRCLNQJKF-VKHMYHEASA-N A1CTZ SMILES_CANONICAL CACTVS 3.385 "OC(=O)[C@H]1NCC[Se]1" A1CTZ SMILES CACTVS 3.385 "OC(=O)[CH]1NCC[Se]1" A1CTZ SMILES_CANONICAL "OpenEye OEToolkits" 3.1.0.0 "C1C[Se][C@H](N1)C(=O)O" A1CTZ SMILES "OpenEye OEToolkits" 3.1.0.0 "C1C[Se]C(N1)C(=O)O" # 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 A1CTZ "SYSTEMATIC NAME" ACDLabs 14.52 "(2S)-1,3-selenazolidine-2-carboxylic acid" A1CTZ "SYSTEMATIC NAME" "OpenEye OEToolkits" 3.1.0.0 "(2~{S})-1,3-selenazolidine-2-carboxylic 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 A1CTZ "Create component" 2025-09-17 RCSB A1CTZ "Modify PCM" 2025-09-18 RCSB A1CTZ "Modify PCM" 2025-09-19 RCSB A1CTZ "Initial release" 2026-09-23 RCSB # _pdbx_chem_comp_pcm.pcm_id 1 _pdbx_chem_comp_pcm.comp_id A1CTZ _pdbx_chem_comp_pcm.modified_residue_id ? _pdbx_chem_comp_pcm.type None _pdbx_chem_comp_pcm.category "Non-standard residue" _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 ? #