data_A1KN4 # _chem_comp.id A1KN4 _chem_comp.name "Leucine epoxyketone, bound form" _chem_comp.type "L-peptide linking" _chem_comp.pdbx_type ATOMP _chem_comp.formula "C9 H19 N O2" _chem_comp.mon_nstd_parent_comp_id ? _chem_comp.pdbx_synonyms ? _chem_comp.pdbx_formal_charge 0 _chem_comp.pdbx_initial_date 2026-08-20 _chem_comp.pdbx_modified_date 2026-10-30 _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 173.253 _chem_comp.one_letter_code ? _chem_comp.three_letter_code A1KN4 _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 9SDR _chem_comp.pdbx_subcomponent_list ? _chem_comp.pdbx_processing_site PDBE _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 A1KN4 N N1 N 0 1 N N N Y Y N 154.230 175.618 135.615 1.180 2.110 -0.359 N A1KN4 1 A1KN4 CA C1 C 0 1 N N S N Y N 154.072 176.000 134.213 0.632 0.747 -0.395 CA A1KN4 2 A1KN4 CB C2 C 0 1 N N N N N N 153.921 177.521 134.126 1.479 -0.167 0.493 CB A1KN4 3 A1KN4 CG C3 C 0 1 N N N N N N 152.645 178.013 133.438 2.895 -0.262 -0.078 CG A1KN4 4 A1KN4 CD1 C4 C 0 1 N N N N N N 151.415 177.551 134.196 3.778 -1.065 0.880 CD1 A1KN4 5 A1KN4 CD2 C5 C 0 1 N N N N N N 152.649 179.523 133.294 2.852 -0.960 -1.438 CD2 A1KN4 6 A1KN4 C C6 C 0 1 N N N N Y Y 155.175 175.455 133.298 -0.788 0.763 0.111 C A1KN4 7 A1KN4 C24 C7 C 0 1 N N N N N N 153.530 173.589 132.729 -3.139 0.055 -0.237 C24 A1KN4 8 A1KN4 C23 C8 C 0 1 N N S N Y Y 155.010 173.952 132.997 -1.688 -0.420 -0.133 C23 A1KN4 9 A1KN4 C25 C9 C 0 1 N N N N N N 155.507 173.105 134.171 -1.557 -1.409 1.027 C25 A1KN4 10 A1KN4 O O1 O 0 1 N N N N Y Y 156.430 175.682 133.883 -1.204 1.725 0.711 O A1KN4 11 A1KN4 O7 O2 O 0 1 N N N N N N 152.997 172.761 133.749 -3.978 -1.048 -0.583 O7 A1KN4 12 A1KN4 H H1 H 0 1 N N N Y Y N 153.481 176.005 136.153 1.126 2.497 0.572 H A1KN4 13 A1KN4 H2 H2 H 0 1 N Y N Y Y N 154.216 174.621 135.692 2.128 2.127 -0.703 H2 A1KN4 14 A1KN4 HA H4 H 0 1 N N N N Y N 153.125 175.568 133.857 0.648 0.376 -1.419 HA A1KN4 15 A1KN4 HB2 H5 H 0 1 N N N N N N 154.782 177.917 133.568 1.520 0.243 1.502 HB2 A1KN4 16 A1KN4 HB3 H6 H 0 1 N N N N N N 153.932 177.923 135.150 1.032 -1.161 0.522 HB3 A1KN4 17 A1KN4 HG H7 H 0 1 N N N N N N 152.612 177.573 132.430 3.307 0.741 -0.196 HG A1KN4 18 A1KN4 HD11 H8 H 0 0 N N N N N N 151.431 176.455 134.289 3.320 -2.037 1.067 HD11 A1KN4 19 A1KN4 HD12 H9 H 0 0 N N N N N N 151.410 178.004 135.198 4.762 -1.207 0.434 HD12 A1KN4 20 A1KN4 HD13 H10 H 0 0 N N N N N N 150.511 177.859 133.650 3.879 -0.525 1.821 HD13 A1KN4 21 A1KN4 HD21 H11 H 0 0 N N N N N N 151.722 179.847 132.798 2.223 -0.387 -2.120 HD21 A1KN4 22 A1KN4 HD22 H12 H 0 0 N N N N N N 152.713 179.986 134.290 3.861 -1.027 -1.845 HD22 A1KN4 23 A1KN4 HD23 H13 H 0 0 N N N N N N 153.515 179.831 132.690 2.440 -1.962 -1.320 HD23 A1KN4 24 A1KN4 H15 H15 H 0 1 N N N N N N 152.940 174.516 132.678 -3.456 0.466 0.722 H15 A1KN4 25 A1KN4 H16 H16 H 0 1 N N N N N N 153.462 173.058 131.768 -3.215 0.825 -1.005 H16 A1KN4 26 A1KN4 H17 H17 H 0 1 N N N N Y Y 155.601 173.703 132.103 -1.399 -0.911 -1.063 H17 A1KN4 27 A1KN4 H18 H18 H 0 1 N N N N N N 156.560 173.348 134.379 -1.846 -0.918 1.957 H18 A1KN4 28 A1KN4 H19 H19 H 0 1 N N N N N N 154.898 173.320 135.062 -2.208 -2.265 0.851 H19 A1KN4 29 A1KN4 H20 H20 H 0 1 N N N N N N 155.420 172.038 133.916 -0.523 -1.747 1.101 H20 A1KN4 30 A1KN4 H22 H22 H 0 1 N N N N N N 152.090 172.559 133.552 -4.914 -0.820 -0.666 H22 A1KN4 31 # 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 A1KN4 C24 C23 SING N N 1 A1KN4 C24 O7 SING N N 2 A1KN4 C23 C SING N N 3 A1KN4 C23 C25 SING N N 4 A1KN4 CD2 CG SING N N 5 A1KN4 C O DOUB N N 6 A1KN4 C CA SING N N 7 A1KN4 CG CB SING N N 8 A1KN4 CG CD1 SING N N 9 A1KN4 CB CA SING N N 10 A1KN4 CA N SING N N 11 A1KN4 N H SING N N 12 A1KN4 N H2 SING N N 13 A1KN4 CA HA SING N N 14 A1KN4 CB HB2 SING N N 15 A1KN4 CB HB3 SING N N 16 A1KN4 CG HG SING N N 17 A1KN4 CD1 HD11 SING N N 18 A1KN4 CD1 HD12 SING N N 19 A1KN4 CD1 HD13 SING N N 20 A1KN4 CD2 HD21 SING N N 21 A1KN4 CD2 HD22 SING N N 22 A1KN4 CD2 HD23 SING N N 23 A1KN4 C24 H15 SING N N 24 A1KN4 C24 H16 SING N N 25 A1KN4 C23 H17 SING N N 26 A1KN4 C25 H18 SING N N 27 A1KN4 C25 H19 SING N N 28 A1KN4 C25 H20 SING N N 29 A1KN4 O7 H22 SING N N 30 # 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 A1KN4 InChI InChI 1.06 "InChI=1S/C9H19NO2/c1-6(2)4-8(10)9(12)7(3)5-11/h6-8,11H,4-5,10H2,1-3H3/t7-,8-/m0/s1" A1KN4 InChIKey InChI 1.06 QQAYGLIIXGYVDR-YUMQZZPRSA-N A1KN4 SMILES_CANONICAL CACTVS 3.385 "CC(C)C[C@H](N)C(=O)[C@@H](C)CO" A1KN4 SMILES CACTVS 3.385 "CC(C)C[CH](N)C(=O)[CH](C)CO" A1KN4 SMILES_CANONICAL "OpenEye OEToolkits" 2.0.7 "C[C@@H](CO)C(=O)[C@H](CC(C)C)N" A1KN4 SMILES "OpenEye OEToolkits" 2.0.7 "CC(C)CC(C(=O)C(C)CO)N" # _pdbx_chem_comp_identifier.comp_id A1KN4 _pdbx_chem_comp_identifier.type "SYSTEMATIC NAME" _pdbx_chem_comp_identifier.program "OpenEye OEToolkits" _pdbx_chem_comp_identifier.program_version 2.0.7 _pdbx_chem_comp_identifier.identifier "(2~{S},4~{S})-4-azanyl-2,6-dimethyl-1-oxidanyl-heptan-3-one" # _pdbx_chem_comp_pcm.pcm_id 1 _pdbx_chem_comp_pcm.comp_id A1KN4 _pdbx_chem_comp_pcm.modified_residue_id OMT _pdbx_chem_comp_pcm.type None _pdbx_chem_comp_pcm.category "Non-standard residue" _pdbx_chem_comp_pcm.position "Amino-acid backbone" _pdbx_chem_comp_pcm.polypeptide_position C-terminal _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 ? # loop_ _pdbx_chem_comp_audit.comp_id _pdbx_chem_comp_audit.action_type _pdbx_chem_comp_audit.date _pdbx_chem_comp_audit.processing_site A1KN4 "Create component" 2026-08-20 PDBE A1KN4 "Other modification" 2026-08-26 PDBE A1KN4 "Modify PCM" 2026-09-03 PDBE A1KN4 "Initial release" 2026-11-04 RCSB #