data_28Y
#

_chem_comp.id                                   28Y
_chem_comp.name                                 "3H-imidazo[2,1-b]purin-4(5H)-one"
_chem_comp.type                                 NON-POLYMER
_chem_comp.pdbx_type                            HETAIN
_chem_comp.formula                              "C7 H5 N5 O"
_chem_comp.mon_nstd_parent_comp_id              ?
_chem_comp.pdbx_synonyms                        "N2,3-ethenoguanine"
_chem_comp.pdbx_formal_charge                   0
_chem_comp.pdbx_initial_date                    2013-09-11
_chem_comp.pdbx_modified_date                   2021-03-13
_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                       175.147
_chem_comp.one_letter_code                      ?
_chem_comp.three_letter_code                    28Y
_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       4MEJ
_chem_comp.pdbx_subcomponent_list               ?
_chem_comp.pdbx_processing_site                 RCSB
#   #
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.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
28Y  C4   C4   C  0  1  Y  N  N  2.180  -4.540  -25.061  -0.422   0.875  -0.001  C4   28Y   1  
28Y  C5   C5   C  0  1  Y  N  N  2.270  -5.823  -24.544  -1.314  -0.187  -0.001  C5   28Y   2  
28Y  C6   C6   C  0  1  N  N  N  1.693  -6.133  -23.320  -0.823  -1.512  -0.000  C6   28Y   3  
28Y  C8   C8   C  0  1  Y  N  N  3.287  -5.768  -26.441  -2.419   1.707  -0.001  C8   28Y   4  
28Y  N1   N1   N  0  1  N  N  N  1.017  -5.147  -22.601   0.507  -1.730   0.001  N1   28Y   5  
28Y  N2   N2   N  0  1  Y  N  N  0.364  -2.747  -22.680   2.711  -0.639   0.000  N2   28Y   6  
28Y  N3   N3   N  0  1  Y  N  N  1.506  -3.548  -24.351   0.941   0.614  -0.000  N3   28Y   7  
28Y  O6   O6   O  0  1  N  N  N  1.779  -7.275  -22.872  -1.598  -2.452   0.000  O6   28Y   8  
28Y  N7   N7   N  0  1  Y  N  N  2.955  -6.550  -25.415  -2.578   0.370  -0.001  N7   28Y   9  
28Y  N9   N9   N  0  1  Y  N  N  2.815  -4.540  -26.227  -1.144   2.000   0.004  N9   28Y  10  
28Y  CAD  CAD  C  0  1  Y  N  N  1.261  -2.265  -24.594   2.043   1.435  -0.001  CAD  28Y  11  
28Y  CAB  CAB  C  0  1  Y  N  N  0.569  -1.778  -23.567   3.126   0.637  -0.001  CAB  28Y  12  
28Y  C2   C2   C  0  1  Y  N  N  0.928  -3.857  -23.125   1.396  -0.671   0.001  C2   28Y  13  
28Y  H1   H1   H  0  1  N  N  N  3.849  -6.080  -27.309  -3.223   2.429   0.001  H1   28Y  14  
28Y  H2   H2   H  0  1  N  N  N  0.600  -5.363  -21.718   0.844  -2.640   0.002  H2   28Y  15  
28Y  H3   H3   H  0  1  N  N  N  3.183  -7.519  -25.319  -3.420  -0.112  -0.005  H3   28Y  16  
28Y  H5   H5   H  0  1  N  N  N  1.569  -1.714  -25.471   2.040   2.515  -0.002  H5   28Y  17  
28Y  H6   H6   H  0  1  N  N  N  0.228  -0.758  -23.469   4.154   0.967  -0.001  H6   28Y  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
28Y  C8   N9   DOUB  Y  N   1  
28Y  C8   N7   SING  Y  N   2  
28Y  N9   C4   SING  Y  N   3  
28Y  N7   C5   SING  Y  N   4  
28Y  C4   C5   DOUB  Y  N   5  
28Y  C4   N3   SING  N  N   6  
28Y  CAD  N3   SING  Y  N   7  
28Y  CAD  CAB  DOUB  Y  N   8  
28Y  C5   C6   SING  N  N   9  
28Y  N3   C2   SING  Y  N  10  
28Y  CAB  N2   SING  Y  N  11  
28Y  C6   O6   DOUB  N  N  12  
28Y  C6   N1   SING  N  N  13  
28Y  C2   N2   DOUB  Y  N  14  
28Y  C2   N1   SING  N  N  15  
28Y  C8   H1   SING  N  N  16  
28Y  N1   H2   SING  N  N  17  
28Y  N7   H3   SING  N  N  18  
28Y  CAD  H5   SING  N  N  19  
28Y  CAB  H6   SING  N  N  20  
#   #
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
28Y  SMILES            ACDLabs               12.01  "O=C3c1c(ncn1)n2c(ncc2)N3"  
28Y  InChI             InChI                 1.03   "InChI=1S/C7H5N5O/c13-6-4-5(10-3-9-4)12-2-1-8-7(12)11-6/h1-3H,(H,9,10)(H,8,11,13)"  
28Y  InChIKey          InChI                 1.03   OSXKHFTZRHDUJN-UHFFFAOYSA-N  
28Y  SMILES_CANONICAL  CACTVS                3.385  O=C1Nc2nccn2c3nc[nH]c13  
28Y  SMILES            CACTVS                3.385  O=C1Nc2nccn2c3nc[nH]c13  
28Y  SMILES_CANONICAL  "OpenEye OEToolkits"  1.7.6  "c1cn-2c(n1)NC(=O)c3c2nc[nH]3"  
28Y  SMILES            "OpenEye OEToolkits"  1.7.6  "c1cn-2c(n1)NC(=O)c3c2nc[nH]3"  
#   #
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
28Y  "SYSTEMATIC NAME"  ACDLabs               12.01  "3H-imidazo[2,1-b]purin-4(5H)-one"  
28Y  "SYSTEMATIC NAME"  "OpenEye OEToolkits"  1.7.6  "3,5-dihydroimidazo[2,1-b]purin-4-one"  
#   #
loop_
_pdbx_chem_comp_audit.comp_id
_pdbx_chem_comp_audit.action_type
_pdbx_chem_comp_audit.date
_pdbx_chem_comp_audit.processing_site
28Y  "Create component"  2013-09-11  RCSB  
28Y  "Initial release"   2014-10-15  RCSB  
28Y  "Modify synonyms"   2021-03-13  RCSB  
#
_pdbx_chem_comp_synonyms.ordinal     1
_pdbx_chem_comp_synonyms.comp_id     28Y
_pdbx_chem_comp_synonyms.name        "N2,3-ethenoguanine"
_pdbx_chem_comp_synonyms.provenance  PDB
_pdbx_chem_comp_synonyms.type        ?
##
