data_1I2X
# 
_entry.id   1I2X 
# 
_audit_conform.dict_name       mmcif_pdbx.dic 
_audit_conform.dict_version    5.386 
_audit_conform.dict_location   http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic 
# 
loop_
_database_2.database_id 
_database_2.database_code 
_database_2.pdbx_database_accession 
_database_2.pdbx_DOI 
PDB   1I2X         pdb_00001i2x 10.2210/pdb1i2x/pdb 
NDB   AH0013       ?            ?                   
RCSB  RCSB012836   ?            ?                   
WWPDB D_1000012836 ?            ?                   
# 
loop_
_pdbx_audit_revision_history.ordinal 
_pdbx_audit_revision_history.data_content_type 
_pdbx_audit_revision_history.major_revision 
_pdbx_audit_revision_history.minor_revision 
_pdbx_audit_revision_history.revision_date 
1 'Structure model' 1 0 2001-04-21 
2 'Structure model' 1 1 2008-04-27 
3 'Structure model' 1 2 2011-07-13 
4 'Structure model' 1 3 2024-02-07 
# 
_pdbx_audit_revision_details.ordinal             1 
_pdbx_audit_revision_details.revision_ordinal    1 
_pdbx_audit_revision_details.data_content_type   'Structure model' 
_pdbx_audit_revision_details.provider            repository 
_pdbx_audit_revision_details.type                'Initial release' 
_pdbx_audit_revision_details.description         ? 
_pdbx_audit_revision_details.details             ? 
# 
loop_
_pdbx_audit_revision_group.ordinal 
_pdbx_audit_revision_group.revision_ordinal 
_pdbx_audit_revision_group.data_content_type 
_pdbx_audit_revision_group.group 
1 2 'Structure model' 'Version format compliance' 
2 3 'Structure model' 'Version format compliance' 
3 4 'Structure model' 'Data collection'           
4 4 'Structure model' 'Database references'       
5 4 'Structure model' 'Derived calculations'      
# 
loop_
_pdbx_audit_revision_category.ordinal 
_pdbx_audit_revision_category.revision_ordinal 
_pdbx_audit_revision_category.data_content_type 
_pdbx_audit_revision_category.category 
1 4 'Structure model' chem_comp_atom 
2 4 'Structure model' chem_comp_bond 
3 4 'Structure model' database_2     
4 4 'Structure model' struct_site    
# 
loop_
_pdbx_audit_revision_item.ordinal 
_pdbx_audit_revision_item.revision_ordinal 
_pdbx_audit_revision_item.data_content_type 
_pdbx_audit_revision_item.item 
1 4 'Structure model' '_database_2.pdbx_DOI'                
2 4 'Structure model' '_database_2.pdbx_database_accession' 
3 4 'Structure model' '_struct_site.pdbx_auth_asym_id'      
4 4 'Structure model' '_struct_site.pdbx_auth_comp_id'      
5 4 'Structure model' '_struct_site.pdbx_auth_seq_id'       
# 
_pdbx_database_status.status_code                     REL 
_pdbx_database_status.entry_id                        1I2X 
_pdbx_database_status.recvd_initial_deposition_date   2001-02-12 
_pdbx_database_status.deposit_site                    RCSB 
_pdbx_database_status.process_site                    RCSB 
_pdbx_database_status.status_code_sf                  REL 
_pdbx_database_status.SG_entry                        . 
_pdbx_database_status.status_code_mr                  ? 
_pdbx_database_status.pdb_format_compatible           Y 
_pdbx_database_status.status_code_cs                  ? 
_pdbx_database_status.status_code_nmr_data            ? 
_pdbx_database_status.methods_development_category    ? 
# 
loop_
_audit_author.name 
_audit_author.pdbx_ordinal 
'Tereshko, V.' 1 
'Wallace, S.'  2 
'Usman, N.'    3 
'Wincott, F.'  4 
'Egli, M.'     5 
# 
_citation.id                        primary 
_citation.title                     
;X-ray crystallographic observation of "in-line" and "adjacent" conformations in a bulged self-cleaving RNA/DNA hybrid.
;
_citation.journal_abbrev            RNA 
_citation.journal_volume            7 
_citation.page_first                405 
_citation.page_last                 420 
_citation.year                      2001 
_citation.journal_id_ASTM           RNARFU 
_citation.country                   UK 
_citation.journal_id_ISSN           1355-8382 
_citation.journal_id_CSD            2122 
_citation.book_publisher            ? 
_citation.pdbx_database_id_PubMed   11333021 
_citation.pdbx_database_id_DOI      10.1017/S1355838201001935 
# 
loop_
_citation_author.citation_id 
_citation_author.name 
_citation_author.ordinal 
_citation_author.identifier_ORCID 
primary 'Tereshko, V.'  1 ? 
primary 'Wallace, S.T.' 2 ? 
primary 'Usman, N.'     3 ? 
primary 'Wincott, F.E.' 4 ? 
primary 'Egli, M.'      5 ? 
# 
loop_
_entity.id 
_entity.type 
_entity.src_method 
_entity.pdbx_description 
_entity.formula_weight 
_entity.pdbx_number_of_molecules 
_entity.pdbx_ec 
_entity.pdbx_mutation 
_entity.pdbx_fragment 
_entity.details 
1 polymer     syn 
;DNA/RNA (5'-R(*GP*CP*G)-D(P*AP*TP*AP*T)-R(P*AP*CP*GP*U)-3')
;
3471.194 4  ? ? ? ? 
2 non-polymer syn SPERMIDINE                                                    145.246  1  ? ? ? ? 
3 water       nat water                                                         18.015   79 ? ? ? ? 
# 
_entity_poly.entity_id                      1 
_entity_poly.type                           'polydeoxyribonucleotide/polyribonucleotide hybrid' 
_entity_poly.nstd_linkage                   no 
_entity_poly.nstd_monomer                   no 
_entity_poly.pdbx_seq_one_letter_code       'GCG(DA)(DT)(DA)(DT)ACGU' 
_entity_poly.pdbx_seq_one_letter_code_can   GCGATATACGU 
_entity_poly.pdbx_strand_id                 A,B,D,C 
_entity_poly.pdbx_target_identifier         ? 
# 
loop_
_pdbx_entity_nonpoly.entity_id 
_pdbx_entity_nonpoly.name 
_pdbx_entity_nonpoly.comp_id 
2 SPERMIDINE SPD 
3 water      HOH 
# 
loop_
_entity_poly_seq.entity_id 
_entity_poly_seq.num 
_entity_poly_seq.mon_id 
_entity_poly_seq.hetero 
1 1  G  n 
1 2  C  n 
1 3  G  n 
1 4  DA n 
1 5  DT n 
1 6  DA n 
1 7  DT n 
1 8  A  n 
1 9  C  n 
1 10 G  n 
1 11 U  n 
# 
loop_
_chem_comp.id 
_chem_comp.type 
_chem_comp.mon_nstd_flag 
_chem_comp.name 
_chem_comp.pdbx_synonyms 
_chem_comp.formula 
_chem_comp.formula_weight 
A   'RNA linking' y "ADENOSINE-5'-MONOPHOSPHATE"         ?                                              'C10 H14 N5 O7 P' 347.221 
C   'RNA linking' y "CYTIDINE-5'-MONOPHOSPHATE"          ?                                              'C9 H14 N3 O8 P'  323.197 
DA  'DNA linking' y "2'-DEOXYADENOSINE-5'-MONOPHOSPHATE" ?                                              'C10 H14 N5 O6 P' 331.222 
DT  'DNA linking' y "THYMIDINE-5'-MONOPHOSPHATE"         ?                                              'C10 H15 N2 O8 P' 322.208 
G   'RNA linking' y "GUANOSINE-5'-MONOPHOSPHATE"         ?                                              'C10 H14 N5 O8 P' 363.221 
HOH non-polymer   . WATER                                ?                                              'H2 O'            18.015  
SPD non-polymer   . SPERMIDINE                           'N-(2-AMINO-PROPYL)-1,4-DIAMINOBUTANE; PA(34)' 'C7 H19 N3'       145.246 
U   'RNA linking' y "URIDINE-5'-MONOPHOSPHATE"           ?                                              'C9 H13 N2 O9 P'  324.181 
# 
loop_
_pdbx_poly_seq_scheme.asym_id 
_pdbx_poly_seq_scheme.entity_id 
_pdbx_poly_seq_scheme.seq_id 
_pdbx_poly_seq_scheme.mon_id 
_pdbx_poly_seq_scheme.ndb_seq_num 
_pdbx_poly_seq_scheme.pdb_seq_num 
_pdbx_poly_seq_scheme.auth_seq_num 
_pdbx_poly_seq_scheme.pdb_mon_id 
_pdbx_poly_seq_scheme.auth_mon_id 
_pdbx_poly_seq_scheme.pdb_strand_id 
_pdbx_poly_seq_scheme.pdb_ins_code 
_pdbx_poly_seq_scheme.hetero 
A 1 1  G  1  1   1   G  G A . n 
A 1 2  C  2  2   2   C  C A . n 
A 1 3  G  3  3   3   G  G A . n 
A 1 4  DA 4  4   4   DA A A . n 
A 1 5  DT 5  5   5   DT T A . n 
A 1 6  DA 6  6   6   DA A A . n 
A 1 7  DT 7  7   7   DT T A . n 
A 1 8  A  8  8   8   A  A A . n 
A 1 9  C  9  9   9   C  C A . n 
A 1 10 G  10 10  10  G  G A . n 
A 1 11 U  11 11  11  U  U A . n 
B 1 1  G  1  21  21  G  G B . n 
B 1 2  C  2  22  22  C  C B . n 
B 1 3  G  3  23  23  G  G B . n 
B 1 4  DA 4  24  24  DA A B . n 
B 1 5  DT 5  25  25  DT T B . n 
B 1 6  DA 6  26  26  DA A B . n 
B 1 7  DT 7  27  27  DT T B . n 
B 1 8  A  8  28  28  A  A B . n 
B 1 9  C  9  29  29  C  C B . n 
B 1 10 G  10 30  30  G  G B . n 
B 1 11 U  11 31  31  U  U B . n 
C 1 1  G  1  101 101 G  G D . n 
C 1 2  C  2  102 102 C  C D . n 
C 1 3  G  3  103 103 G  G D . n 
C 1 4  DA 4  104 104 DA A D . n 
C 1 5  DT 5  105 105 DT T D . n 
C 1 6  DA 6  106 106 DA A D . n 
C 1 7  DT 7  107 107 DT T D . n 
C 1 8  A  8  108 108 A  A D . n 
C 1 9  C  9  109 109 C  C D . n 
C 1 10 G  10 110 110 G  G D . n 
C 1 11 U  11 111 111 U  U D . n 
D 1 1  G  1  121 121 G  G C . n 
D 1 2  C  2  122 122 C  C C . n 
D 1 3  G  3  123 123 G  G C . n 
D 1 4  DA 4  124 124 DA A C . n 
D 1 5  DT 5  125 125 DT T C . n 
D 1 6  DA 6  126 126 DA A C . n 
D 1 7  DT 7  127 127 DT T C . n 
D 1 8  A  8  128 128 A  A C . n 
D 1 9  C  9  129 129 C  C C . n 
D 1 10 G  10 130 130 G  G C . n 
D 1 11 U  11 131 131 U  U C . n 
# 
loop_
_pdbx_nonpoly_scheme.asym_id 
_pdbx_nonpoly_scheme.entity_id 
_pdbx_nonpoly_scheme.mon_id 
_pdbx_nonpoly_scheme.ndb_seq_num 
_pdbx_nonpoly_scheme.pdb_seq_num 
_pdbx_nonpoly_scheme.auth_seq_num 
_pdbx_nonpoly_scheme.pdb_mon_id 
_pdbx_nonpoly_scheme.auth_mon_id 
_pdbx_nonpoly_scheme.pdb_strand_id 
_pdbx_nonpoly_scheme.pdb_ins_code 
E 2 SPD 1  200 200 SPD SPD D . 
F 3 HOH 1  205 205 HOH HOH A . 
F 3 HOH 2  208 208 HOH HOH A . 
F 3 HOH 3  214 214 HOH HOH A . 
F 3 HOH 4  215 215 HOH HOH A . 
F 3 HOH 5  219 219 HOH HOH A . 
F 3 HOH 6  221 221 HOH HOH A . 
F 3 HOH 7  222 222 HOH HOH A . 
F 3 HOH 8  224 224 HOH HOH A . 
F 3 HOH 9  227 227 HOH HOH A . 
F 3 HOH 10 231 231 HOH HOH A . 
F 3 HOH 11 239 239 HOH HOH A . 
F 3 HOH 12 241 241 HOH HOH A . 
F 3 HOH 13 242 242 HOH HOH A . 
F 3 HOH 14 246 246 HOH HOH A . 
F 3 HOH 15 252 252 HOH HOH A . 
F 3 HOH 16 253 253 HOH HOH A . 
F 3 HOH 17 257 257 HOH HOH A . 
F 3 HOH 18 258 258 HOH HOH A . 
F 3 HOH 19 260 260 HOH HOH A . 
F 3 HOH 20 281 281 HOH HOH A . 
G 3 HOH 1  201 201 HOH HOH B . 
G 3 HOH 2  207 207 HOH HOH B . 
G 3 HOH 3  209 209 HOH HOH B . 
G 3 HOH 4  211 211 HOH HOH B . 
G 3 HOH 5  216 216 HOH HOH B . 
G 3 HOH 6  218 218 HOH HOH B . 
G 3 HOH 7  229 229 HOH HOH B . 
G 3 HOH 8  237 237 HOH HOH B . 
G 3 HOH 9  240 240 HOH HOH B . 
G 3 HOH 10 243 243 HOH HOH B . 
G 3 HOH 11 248 248 HOH HOH B . 
G 3 HOH 12 249 249 HOH HOH B . 
G 3 HOH 13 259 259 HOH HOH B . 
G 3 HOH 14 265 265 HOH HOH B . 
G 3 HOH 15 279 279 HOH HOH B . 
H 3 HOH 1  202 202 HOH HOH D . 
H 3 HOH 2  203 203 HOH HOH D . 
H 3 HOH 3  204 204 HOH HOH D . 
H 3 HOH 4  206 206 HOH HOH D . 
H 3 HOH 5  217 217 HOH HOH D . 
H 3 HOH 6  228 228 HOH HOH D . 
H 3 HOH 7  234 234 HOH HOH D . 
H 3 HOH 8  235 235 HOH HOH D . 
H 3 HOH 9  238 238 HOH HOH D . 
H 3 HOH 10 244 244 HOH HOH D . 
H 3 HOH 11 245 245 HOH HOH D . 
H 3 HOH 12 247 247 HOH HOH D . 
H 3 HOH 13 263 263 HOH HOH D . 
H 3 HOH 14 264 264 HOH HOH D . 
H 3 HOH 15 266 266 HOH HOH D . 
H 3 HOH 16 268 268 HOH HOH D . 
H 3 HOH 17 272 272 HOH HOH D . 
H 3 HOH 18 273 273 HOH HOH D . 
H 3 HOH 19 276 276 HOH HOH D . 
H 3 HOH 20 278 278 HOH HOH D . 
I 3 HOH 1  210 210 HOH HOH C . 
I 3 HOH 2  212 212 HOH HOH C . 
I 3 HOH 3  213 213 HOH HOH C . 
I 3 HOH 4  223 223 HOH HOH C . 
I 3 HOH 5  225 225 HOH HOH C . 
I 3 HOH 6  226 226 HOH HOH C . 
I 3 HOH 7  232 232 HOH HOH C . 
I 3 HOH 8  233 233 HOH HOH C . 
I 3 HOH 9  236 236 HOH HOH C . 
I 3 HOH 10 250 250 HOH HOH C . 
I 3 HOH 11 251 251 HOH HOH C . 
I 3 HOH 12 254 254 HOH HOH C . 
I 3 HOH 13 255 255 HOH HOH C . 
I 3 HOH 14 256 256 HOH HOH C . 
I 3 HOH 15 261 261 HOH HOH C . 
I 3 HOH 16 262 262 HOH HOH C . 
I 3 HOH 17 267 267 HOH HOH C . 
I 3 HOH 18 269 269 HOH HOH C . 
I 3 HOH 19 270 270 HOH HOH C . 
I 3 HOH 20 271 271 HOH HOH C . 
I 3 HOH 21 274 274 HOH HOH C . 
I 3 HOH 22 275 275 HOH HOH C . 
I 3 HOH 23 277 277 HOH HOH C . 
I 3 HOH 24 280 280 HOH HOH C . 
# 
loop_
_software.name 
_software.classification 
_software.version 
_software.citation_id 
_software.pdbx_ordinal 
DENZO     'data reduction' .   ? 1 
SCALEPACK 'data scaling'   .   ? 2 
AMoRE     phasing          .   ? 3 
CNS       refinement       1.0 ? 4 
# 
_cell.entry_id           1I2X 
_cell.length_a           27.69 
_cell.length_b           47.71 
_cell.length_c           113.62 
_cell.angle_alpha        90 
_cell.angle_beta         90 
_cell.angle_gamma        90 
_cell.Z_PDB              16 
_cell.pdbx_unique_axis   ? 
_cell.length_a_esd       ? 
_cell.length_b_esd       ? 
_cell.length_c_esd       ? 
_cell.angle_alpha_esd    ? 
_cell.angle_beta_esd     ? 
_cell.angle_gamma_esd    ? 
# 
_symmetry.entry_id                         1I2X 
_symmetry.space_group_name_H-M             'P 21 21 21' 
_symmetry.pdbx_full_space_group_name_H-M   ? 
_symmetry.cell_setting                     orthorhombic 
_symmetry.Int_Tables_number                19 
_symmetry.space_group_name_Hall            ? 
# 
_exptl.entry_id          1I2X 
_exptl.method            'X-RAY DIFFRACTION' 
_exptl.crystals_number   1 
# 
_exptl_crystal.id                    1 
_exptl_crystal.density_meas          ? 
_exptl_crystal.density_Matthews      2.68 
_exptl_crystal.density_percent_sol   54.07 
_exptl_crystal.description           ? 
_exptl_crystal.F_000                 ? 
_exptl_crystal.preparation           ? 
# 
_exptl_crystal_grow.crystal_id      1 
_exptl_crystal_grow.method          'VAPOR DIFFUSION, SITTING DROP' 
_exptl_crystal_grow.temp            298 
_exptl_crystal_grow.temp_details    ? 
_exptl_crystal_grow.pH              6.0 
_exptl_crystal_grow.pdbx_details    'spermidine, MPD. pH 6.0,  VAPOR DIFFUSION, SITTING DROP at 298' 
_exptl_crystal_grow.pdbx_pH_range   ? 
# 
loop_
_exptl_crystal_grow_comp.crystal_id 
_exptl_crystal_grow_comp.id 
_exptl_crystal_grow_comp.sol_id 
_exptl_crystal_grow_comp.name 
_exptl_crystal_grow_comp.volume 
_exptl_crystal_grow_comp.conc 
_exptl_crystal_grow_comp.details 
1 1 1 spermidine ? ? ? 
1 2 1 MPD        ? ? ? 
1 3 2 MPD        ? ? ? 
# 
_diffrn.id                     1 
_diffrn.ambient_temp           100 
_diffrn.ambient_temp_details   ? 
_diffrn.crystal_id             1 
# 
_diffrn_detector.diffrn_id              1 
_diffrn_detector.detector               'IMAGE PLATE' 
_diffrn_detector.type                   'RIGAKU RAXIS IIC' 
_diffrn_detector.pdbx_collection_date   1998-11-26 
_diffrn_detector.details                ? 
# 
_diffrn_radiation.diffrn_id                        1 
_diffrn_radiation.wavelength_id                    1 
_diffrn_radiation.pdbx_monochromatic_or_laue_m_l   M 
_diffrn_radiation.monochromator                    ? 
_diffrn_radiation.pdbx_diffrn_protocol             'SINGLE WAVELENGTH' 
_diffrn_radiation.pdbx_scattering_type             x-ray 
# 
_diffrn_radiation_wavelength.id           1 
_diffrn_radiation_wavelength.wavelength   1.5418 
_diffrn_radiation_wavelength.wt           1.0 
# 
_diffrn_source.diffrn_id                   1 
_diffrn_source.source                      'ROTATING ANODE' 
_diffrn_source.type                        RIGAKU 
_diffrn_source.pdbx_synchrotron_site       ? 
_diffrn_source.pdbx_synchrotron_beamline   ? 
_diffrn_source.pdbx_wavelength             ? 
_diffrn_source.pdbx_wavelength_list        1.5418 
# 
_reflns.entry_id                     1I2X 
_reflns.observed_criterion_sigma_I   0 
_reflns.observed_criterion_sigma_F   0 
_reflns.d_resolution_low             20 
_reflns.d_resolution_high            2.4 
_reflns.number_obs                   6220 
_reflns.number_all                   6220 
_reflns.percent_possible_obs         95.7 
_reflns.pdbx_Rmerge_I_obs            ? 
_reflns.pdbx_Rsym_value              ? 
_reflns.pdbx_netI_over_sigmaI        ? 
_reflns.B_iso_Wilson_estimate        ? 
_reflns.pdbx_redundancy              ? 
_reflns.R_free_details               ? 
_reflns.pdbx_chi_squared             ? 
_reflns.pdbx_scaling_rejects         ? 
_reflns.pdbx_diffrn_id               1 
_reflns.pdbx_ordinal                 1 
# 
_refine.entry_id                                 1I2X 
_refine.ls_number_reflns_obs                     6220 
_refine.ls_number_reflns_all                     6220 
_refine.pdbx_ls_sigma_I                          0 
_refine.pdbx_ls_sigma_F                          0 
_refine.pdbx_data_cutoff_high_absF               ? 
_refine.pdbx_data_cutoff_low_absF                ? 
_refine.ls_d_res_low                             10 
_refine.ls_d_res_high                            2.4 
_refine.ls_percent_reflns_obs                    95.7 
_refine.ls_R_factor_obs                          ? 
_refine.ls_R_factor_all                          ? 
_refine.ls_R_factor_R_work                       0.2495 
_refine.ls_R_factor_R_free                       0.2782 
_refine.ls_R_factor_R_free_error                 ? 
_refine.ls_R_factor_R_free_error_details         ? 
_refine.ls_percent_reflns_R_free                 7.3 
_refine.ls_number_reflns_R_free                  453 
_refine.ls_number_parameters                     ? 
_refine.ls_number_restraints                     ? 
_refine.occupancy_min                            ? 
_refine.occupancy_max                            ? 
_refine.B_iso_mean                               ? 
_refine.aniso_B[1][1]                            ? 
_refine.aniso_B[2][2]                            ? 
_refine.aniso_B[3][3]                            ? 
_refine.aniso_B[1][2]                            ? 
_refine.aniso_B[1][3]                            ? 
_refine.aniso_B[2][3]                            ? 
_refine.solvent_model_details                    ? 
_refine.solvent_model_param_ksol                 ? 
_refine.solvent_model_param_bsol                 ? 
_refine.pdbx_ls_cross_valid_method               THROUGHOUT 
_refine.details                                  ? 
_refine.pdbx_starting_model                      ? 
_refine.pdbx_method_to_determine_struct          'MOLECULAR REPLACEMENT' 
_refine.pdbx_isotropic_thermal_model             ? 
_refine.pdbx_stereochemistry_target_values       ? 
_refine.pdbx_stereochem_target_val_spec_case     ? 
_refine.pdbx_R_Free_selection_details            random 
_refine.pdbx_overall_ESU_R_Free                  ? 
_refine.overall_SU_B                             ? 
_refine.ls_redundancy_reflns_obs                 ? 
_refine.overall_SU_ML                            ? 
_refine.pdbx_overall_ESU_R                       ? 
_refine.pdbx_data_cutoff_high_rms_absF           ? 
_refine.correlation_coeff_Fo_to_Fc               ? 
_refine.correlation_coeff_Fo_to_Fc_free          ? 
_refine.overall_SU_R_Cruickshank_DPI             ? 
_refine.overall_SU_R_free                        ? 
_refine.pdbx_refine_id                           'X-RAY DIFFRACTION' 
_refine.pdbx_overall_phase_error                 ? 
_refine.pdbx_solvent_vdw_probe_radii             ? 
_refine.pdbx_solvent_ion_probe_radii             ? 
_refine.pdbx_solvent_shrinkage_radii             ? 
_refine.ls_wR_factor_R_free                      ? 
_refine.ls_wR_factor_R_work                      ? 
_refine.overall_FOM_free_R_set                   ? 
_refine.overall_FOM_work_R_set                   ? 
_refine.pdbx_diffrn_id                           1 
_refine.pdbx_TLS_residual_ADP_flag               ? 
_refine.pdbx_overall_SU_R_free_Cruickshank_DPI   ? 
_refine.pdbx_overall_SU_R_Blow_DPI               ? 
_refine.pdbx_overall_SU_R_free_Blow_DPI          ? 
# 
_refine_hist.pdbx_refine_id                   'X-RAY DIFFRACTION' 
_refine_hist.cycle_id                         LAST 
_refine_hist.pdbx_number_atoms_protein        0 
_refine_hist.pdbx_number_atoms_nucleic_acid   920 
_refine_hist.pdbx_number_atoms_ligand         10 
_refine_hist.number_atoms_solvent             81 
_refine_hist.number_atoms_total               1011 
_refine_hist.d_res_high                       2.4 
_refine_hist.d_res_low                        10 
# 
_database_PDB_matrix.entry_id          1I2X 
_database_PDB_matrix.origx[1][1]       1.000000 
_database_PDB_matrix.origx[1][2]       0.000000 
_database_PDB_matrix.origx[1][3]       0.000000 
_database_PDB_matrix.origx[2][1]       0.000000 
_database_PDB_matrix.origx[2][2]       1.000000 
_database_PDB_matrix.origx[2][3]       0.000000 
_database_PDB_matrix.origx[3][1]       0.000000 
_database_PDB_matrix.origx[3][2]       0.000000 
_database_PDB_matrix.origx[3][3]       1.000000 
_database_PDB_matrix.origx_vector[1]   0.00000 
_database_PDB_matrix.origx_vector[2]   0.00000 
_database_PDB_matrix.origx_vector[3]   0.00000 
# 
_struct.entry_id                  1I2X 
_struct.title                     '2.4 A STRUCTURE OF A-DUPLEX WITH BULGED ADENOSINE, SPERMIDINE FORM' 
_struct.pdbx_model_details        ? 
_struct.pdbx_CASP_flag            ? 
_struct.pdbx_model_type_details   ? 
# 
_struct_keywords.entry_id        1I2X 
_struct_keywords.pdbx_keywords   'DNA-RNA HYBRID' 
_struct_keywords.text            
;'adenine bulge, A-type NA, DNA/RNA hybrid', DNA-RNA HYBRID
;
# 
loop_
_struct_asym.id 
_struct_asym.pdbx_blank_PDB_chainid_flag 
_struct_asym.pdbx_modified 
_struct_asym.entity_id 
_struct_asym.details 
A N N 1 ? 
B N N 1 ? 
C N N 1 ? 
D N N 1 ? 
E N N 2 ? 
F N N 3 ? 
G N N 3 ? 
H N N 3 ? 
I N N 3 ? 
# 
_struct_ref.id                         1 
_struct_ref.entity_id                  1 
_struct_ref.db_name                    PDB 
_struct_ref.db_code                    1I2X 
_struct_ref.pdbx_db_accession          1I2X 
_struct_ref.pdbx_align_begin           ? 
_struct_ref.pdbx_seq_one_letter_code   ? 
_struct_ref.pdbx_db_isoform            ? 
# 
loop_
_struct_ref_seq.align_id 
_struct_ref_seq.ref_id 
_struct_ref_seq.pdbx_PDB_id_code 
_struct_ref_seq.pdbx_strand_id 
_struct_ref_seq.seq_align_beg 
_struct_ref_seq.pdbx_seq_align_beg_ins_code 
_struct_ref_seq.seq_align_end 
_struct_ref_seq.pdbx_seq_align_end_ins_code 
_struct_ref_seq.pdbx_db_accession 
_struct_ref_seq.db_align_beg 
_struct_ref_seq.pdbx_db_align_beg_ins_code 
_struct_ref_seq.db_align_end 
_struct_ref_seq.pdbx_db_align_end_ins_code 
_struct_ref_seq.pdbx_auth_seq_align_beg 
_struct_ref_seq.pdbx_auth_seq_align_end 
1 1 1I2X A 1 ? 11 ? 1I2X 1   ? 11  ? 1   11  
2 1 1I2X B 1 ? 11 ? 1I2X 21  ? 31  ? 21  31  
3 1 1I2X D 1 ? 11 ? 1I2X 101 ? 111 ? 101 111 
4 1 1I2X C 1 ? 11 ? 1I2X 121 ? 131 ? 121 131 
# 
loop_
_pdbx_struct_assembly.id 
_pdbx_struct_assembly.details 
_pdbx_struct_assembly.method_details 
_pdbx_struct_assembly.oligomeric_details 
_pdbx_struct_assembly.oligomeric_count 
1 author_defined_assembly ? dimeric 2 
2 author_defined_assembly ? dimeric 2 
# 
loop_
_pdbx_struct_assembly_gen.assembly_id 
_pdbx_struct_assembly_gen.oper_expression 
_pdbx_struct_assembly_gen.asym_id_list 
1 1 A,B,F,G   
2 1 C,D,E,H,I 
# 
_pdbx_struct_oper_list.id                   1 
_pdbx_struct_oper_list.type                 'identity operation' 
_pdbx_struct_oper_list.name                 1_555 
_pdbx_struct_oper_list.symmetry_operation   x,y,z 
_pdbx_struct_oper_list.matrix[1][1]         1.0000000000 
_pdbx_struct_oper_list.matrix[1][2]         0.0000000000 
_pdbx_struct_oper_list.matrix[1][3]         0.0000000000 
_pdbx_struct_oper_list.vector[1]            0.0000000000 
_pdbx_struct_oper_list.matrix[2][1]         0.0000000000 
_pdbx_struct_oper_list.matrix[2][2]         1.0000000000 
_pdbx_struct_oper_list.matrix[2][3]         0.0000000000 
_pdbx_struct_oper_list.vector[2]            0.0000000000 
_pdbx_struct_oper_list.matrix[3][1]         0.0000000000 
_pdbx_struct_oper_list.matrix[3][2]         0.0000000000 
_pdbx_struct_oper_list.matrix[3][3]         1.0000000000 
_pdbx_struct_oper_list.vector[3]            0.0000000000 
# 
loop_
_struct_biol.id 
_struct_biol.pdbx_parent_biol_id 
_struct_biol.details 
1 ? ? 
2 ? ? 
# 
loop_
_struct_conn.id 
_struct_conn.conn_type_id 
_struct_conn.pdbx_leaving_atom_flag 
_struct_conn.pdbx_PDB_id 
_struct_conn.ptnr1_label_asym_id 
_struct_conn.ptnr1_label_comp_id 
_struct_conn.ptnr1_label_seq_id 
_struct_conn.ptnr1_label_atom_id 
_struct_conn.pdbx_ptnr1_label_alt_id 
_struct_conn.pdbx_ptnr1_PDB_ins_code 
_struct_conn.pdbx_ptnr1_standard_comp_id 
_struct_conn.ptnr1_symmetry 
_struct_conn.ptnr2_label_asym_id 
_struct_conn.ptnr2_label_comp_id 
_struct_conn.ptnr2_label_seq_id 
_struct_conn.ptnr2_label_atom_id 
_struct_conn.pdbx_ptnr2_label_alt_id 
_struct_conn.pdbx_ptnr2_PDB_ins_code 
_struct_conn.ptnr1_auth_asym_id 
_struct_conn.ptnr1_auth_comp_id 
_struct_conn.ptnr1_auth_seq_id 
_struct_conn.ptnr2_auth_asym_id 
_struct_conn.ptnr2_auth_comp_id 
_struct_conn.ptnr2_auth_seq_id 
_struct_conn.ptnr2_symmetry 
_struct_conn.pdbx_ptnr3_label_atom_id 
_struct_conn.pdbx_ptnr3_label_seq_id 
_struct_conn.pdbx_ptnr3_label_comp_id 
_struct_conn.pdbx_ptnr3_label_asym_id 
_struct_conn.pdbx_ptnr3_label_alt_id 
_struct_conn.pdbx_ptnr3_PDB_ins_code 
_struct_conn.details 
_struct_conn.pdbx_dist_value 
_struct_conn.pdbx_value_order 
_struct_conn.pdbx_role 
hydrog1  hydrog ? ? A G  1  N1 ? ? ? 1_555 B U  11 O2 ? ? A G  1   B U  31  1_555 ? ? ? ? ? ? TYPE_28_PAIR ? ? ? 
hydrog2  hydrog ? ? A G  1  O6 ? ? ? 1_555 B U  11 N3 ? ? A G  1   B U  31  1_555 ? ? ? ? ? ? TYPE_28_PAIR ? ? ? 
hydrog3  hydrog ? ? A C  2  N3 ? ? ? 1_555 B G  10 N1 ? ? A C  2   B G  30  1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog4  hydrog ? ? A C  2  N4 ? ? ? 1_555 B G  10 O6 ? ? A C  2   B G  30  1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog5  hydrog ? ? A C  2  O2 ? ? ? 1_555 B G  10 N2 ? ? A C  2   B G  30  1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog6  hydrog ? ? A G  3  N1 ? ? ? 1_555 B C  9  N3 ? ? A G  3   B C  29  1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog7  hydrog ? ? A G  3  N2 ? ? ? 1_555 B C  9  O2 ? ? A G  3   B C  29  1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog8  hydrog ? ? A G  3  O6 ? ? ? 1_555 B C  9  N4 ? ? A G  3   B C  29  1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog9  hydrog ? ? A DA 4  N1 ? ? ? 1_555 B DT 7  N3 ? ? A DA 4   B DT 27  1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog10 hydrog ? ? A DA 4  N6 ? ? ? 1_555 B DT 7  O4 ? ? A DA 4   B DT 27  1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog11 hydrog ? ? A DT 5  N3 ? ? ? 1_555 B DA 6  N1 ? ? A DT 5   B DA 26  1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog12 hydrog ? ? A DT 5  O4 ? ? ? 1_555 B DA 6  N6 ? ? A DT 5   B DA 26  1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog13 hydrog ? ? A DA 6  N1 ? ? ? 1_555 B DT 5  N3 ? ? A DA 6   B DT 25  1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog14 hydrog ? ? A DA 6  N6 ? ? ? 1_555 B DT 5  O4 ? ? A DA 6   B DT 25  1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog15 hydrog ? ? A DT 7  N3 ? ? ? 1_555 B DA 4  N1 ? ? A DT 7   B DA 24  1_555 ? ? ? ? ? ? 'DT-DA PAIR' ? ? ? 
hydrog16 hydrog ? ? A C  9  N3 ? ? ? 1_555 B G  3  N1 ? ? A C  9   B G  23  1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog17 hydrog ? ? A C  9  N4 ? ? ? 1_555 B G  3  O6 ? ? A C  9   B G  23  1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog18 hydrog ? ? A C  9  O2 ? ? ? 1_555 B G  3  N2 ? ? A C  9   B G  23  1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog19 hydrog ? ? A G  10 N1 ? ? ? 1_555 B C  2  N3 ? ? A G  10  B C  22  1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog20 hydrog ? ? A G  10 N2 ? ? ? 1_555 B C  2  O2 ? ? A G  10  B C  22  1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog21 hydrog ? ? A G  10 O6 ? ? ? 1_555 B C  2  N4 ? ? A G  10  B C  22  1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog22 hydrog ? ? A U  11 N3 ? ? ? 1_555 B G  1  O6 ? ? A U  11  B G  21  1_555 ? ? ? ? ? ? TYPE_28_PAIR ? ? ? 
hydrog23 hydrog ? ? A U  11 O2 ? ? ? 1_555 B G  1  N1 ? ? A U  11  B G  21  1_555 ? ? ? ? ? ? TYPE_28_PAIR ? ? ? 
hydrog24 hydrog ? ? C G  1  N1 ? ? ? 1_555 D U  11 O2 ? ? D G  101 C U  131 1_555 ? ? ? ? ? ? TYPE_28_PAIR ? ? ? 
hydrog25 hydrog ? ? C G  1  O6 ? ? ? 1_555 D U  11 N3 ? ? D G  101 C U  131 1_555 ? ? ? ? ? ? TYPE_28_PAIR ? ? ? 
hydrog26 hydrog ? ? C C  2  N3 ? ? ? 1_555 D G  10 N1 ? ? D C  102 C G  130 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog27 hydrog ? ? C C  2  N4 ? ? ? 1_555 D G  10 O6 ? ? D C  102 C G  130 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog28 hydrog ? ? C C  2  O2 ? ? ? 1_555 D G  10 N2 ? ? D C  102 C G  130 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog29 hydrog ? ? C G  3  N1 ? ? ? 1_555 D C  9  N3 ? ? D G  103 C C  129 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog30 hydrog ? ? C G  3  N2 ? ? ? 1_555 D C  9  O2 ? ? D G  103 C C  129 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog31 hydrog ? ? C G  3  O6 ? ? ? 1_555 D C  9  N4 ? ? D G  103 C C  129 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog32 hydrog ? ? C DA 4  N1 ? ? ? 1_555 D DT 7  N3 ? ? D DA 104 C DT 127 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog33 hydrog ? ? C DA 4  N6 ? ? ? 1_555 D DT 7  O4 ? ? D DA 104 C DT 127 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog34 hydrog ? ? C DT 5  N3 ? ? ? 1_555 D DA 6  N1 ? ? D DT 105 C DA 126 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog35 hydrog ? ? C DT 5  O4 ? ? ? 1_555 D DA 6  N6 ? ? D DT 105 C DA 126 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog36 hydrog ? ? C DA 6  N1 ? ? ? 1_555 D DT 5  N3 ? ? D DA 106 C DT 125 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog37 hydrog ? ? C DA 6  N6 ? ? ? 1_555 D DT 5  O4 ? ? D DA 106 C DT 125 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog38 hydrog ? ? C DT 7  N3 ? ? ? 1_555 D DA 4  N1 ? ? D DT 107 C DA 124 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog39 hydrog ? ? C DT 7  O4 ? ? ? 1_555 D DA 4  N6 ? ? D DT 107 C DA 124 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog40 hydrog ? ? C C  9  N3 ? ? ? 1_555 D G  3  N1 ? ? D C  109 C G  123 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog41 hydrog ? ? C C  9  N4 ? ? ? 1_555 D G  3  O6 ? ? D C  109 C G  123 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog42 hydrog ? ? C C  9  O2 ? ? ? 1_555 D G  3  N2 ? ? D C  109 C G  123 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog43 hydrog ? ? C G  10 N1 ? ? ? 1_555 D C  2  N3 ? ? D G  110 C C  122 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog44 hydrog ? ? C G  10 N2 ? ? ? 1_555 D C  2  O2 ? ? D G  110 C C  122 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog45 hydrog ? ? C G  10 O6 ? ? ? 1_555 D C  2  N4 ? ? D G  110 C C  122 1_555 ? ? ? ? ? ? WATSON-CRICK ? ? ? 
hydrog46 hydrog ? ? C U  11 N3 ? ? ? 1_555 D G  1  O6 ? ? D U  111 C G  121 1_555 ? ? ? ? ? ? TYPE_28_PAIR ? ? ? 
hydrog47 hydrog ? ? C U  11 O2 ? ? ? 1_555 D G  1  N1 ? ? D U  111 C G  121 1_555 ? ? ? ? ? ? TYPE_28_PAIR ? ? ? 
# 
_struct_conn_type.id          hydrog 
_struct_conn_type.criteria    ? 
_struct_conn_type.reference   ? 
# 
_struct_site.id                   AC1 
_struct_site.pdbx_evidence_code   Software 
_struct_site.pdbx_auth_asym_id    D 
_struct_site.pdbx_auth_comp_id    SPD 
_struct_site.pdbx_auth_seq_id     200 
_struct_site.pdbx_auth_ins_code   ? 
_struct_site.pdbx_num_residues    3 
_struct_site.details              'BINDING SITE FOR RESIDUE SPD D 200' 
# 
loop_
_struct_site_gen.id 
_struct_site_gen.site_id 
_struct_site_gen.pdbx_num_res 
_struct_site_gen.label_comp_id 
_struct_site_gen.label_asym_id 
_struct_site_gen.label_seq_id 
_struct_site_gen.pdbx_auth_ins_code 
_struct_site_gen.auth_comp_id 
_struct_site_gen.auth_asym_id 
_struct_site_gen.auth_seq_id 
_struct_site_gen.label_atom_id 
_struct_site_gen.label_alt_id 
_struct_site_gen.symmetry 
_struct_site_gen.details 
1 AC1 3 A A 8 ? A A 8   . ? 3_545 ? 
2 AC1 3 C C 2 ? C D 102 . ? 1_555 ? 
3 AC1 3 G C 3 ? G D 103 . ? 1_555 ? 
# 
_pdbx_validate_rmsd_angle.id                         1 
_pdbx_validate_rmsd_angle.PDB_model_num              1 
_pdbx_validate_rmsd_angle.auth_atom_id_1             "C4'" 
_pdbx_validate_rmsd_angle.auth_asym_id_1             A 
_pdbx_validate_rmsd_angle.auth_comp_id_1             U 
_pdbx_validate_rmsd_angle.auth_seq_id_1              11 
_pdbx_validate_rmsd_angle.PDB_ins_code_1             ? 
_pdbx_validate_rmsd_angle.label_alt_id_1             ? 
_pdbx_validate_rmsd_angle.auth_atom_id_2             "C3'" 
_pdbx_validate_rmsd_angle.auth_asym_id_2             A 
_pdbx_validate_rmsd_angle.auth_comp_id_2             U 
_pdbx_validate_rmsd_angle.auth_seq_id_2              11 
_pdbx_validate_rmsd_angle.PDB_ins_code_2             ? 
_pdbx_validate_rmsd_angle.label_alt_id_2             ? 
_pdbx_validate_rmsd_angle.auth_atom_id_3             "O3'" 
_pdbx_validate_rmsd_angle.auth_asym_id_3             A 
_pdbx_validate_rmsd_angle.auth_comp_id_3             U 
_pdbx_validate_rmsd_angle.auth_seq_id_3              11 
_pdbx_validate_rmsd_angle.PDB_ins_code_3             ? 
_pdbx_validate_rmsd_angle.label_alt_id_3             ? 
_pdbx_validate_rmsd_angle.angle_value                126.15 
_pdbx_validate_rmsd_angle.angle_target_value         113.00 
_pdbx_validate_rmsd_angle.angle_deviation            13.15 
_pdbx_validate_rmsd_angle.angle_standard_deviation   2.00 
_pdbx_validate_rmsd_angle.linker_flag                N 
# 
loop_
_pdbx_validate_planes.id 
_pdbx_validate_planes.PDB_model_num 
_pdbx_validate_planes.auth_comp_id 
_pdbx_validate_planes.auth_asym_id 
_pdbx_validate_planes.auth_seq_id 
_pdbx_validate_planes.PDB_ins_code 
_pdbx_validate_planes.label_alt_id 
_pdbx_validate_planes.rmsd 
_pdbx_validate_planes.type 
1 1 G  A 1   ? ? 0.060 'SIDE CHAIN' 
2 1 G  B 21  ? ? 0.054 'SIDE CHAIN' 
3 1 A  B 28  ? ? 0.056 'SIDE CHAIN' 
4 1 DT D 105 ? ? 0.070 'SIDE CHAIN' 
5 1 C  C 129 ? ? 0.066 'SIDE CHAIN' 
# 
loop_
_chem_comp_atom.comp_id 
_chem_comp_atom.atom_id 
_chem_comp_atom.type_symbol 
_chem_comp_atom.pdbx_aromatic_flag 
_chem_comp_atom.pdbx_stereo_config 
_chem_comp_atom.pdbx_ordinal 
A   OP3    O N N 1   
A   P      P N N 2   
A   OP1    O N N 3   
A   OP2    O N N 4   
A   "O5'"  O N N 5   
A   "C5'"  C N N 6   
A   "C4'"  C N R 7   
A   "O4'"  O N N 8   
A   "C3'"  C N S 9   
A   "O3'"  O N N 10  
A   "C2'"  C N R 11  
A   "O2'"  O N N 12  
A   "C1'"  C N R 13  
A   N9     N Y N 14  
A   C8     C Y N 15  
A   N7     N Y N 16  
A   C5     C Y N 17  
A   C6     C Y N 18  
A   N6     N N N 19  
A   N1     N Y N 20  
A   C2     C Y N 21  
A   N3     N Y N 22  
A   C4     C Y N 23  
A   HOP3   H N N 24  
A   HOP2   H N N 25  
A   "H5'"  H N N 26  
A   "H5''" H N N 27  
A   "H4'"  H N N 28  
A   "H3'"  H N N 29  
A   "HO3'" H N N 30  
A   "H2'"  H N N 31  
A   "HO2'" H N N 32  
A   "H1'"  H N N 33  
A   H8     H N N 34  
A   H61    H N N 35  
A   H62    H N N 36  
A   H2     H N N 37  
C   OP3    O N N 38  
C   P      P N N 39  
C   OP1    O N N 40  
C   OP2    O N N 41  
C   "O5'"  O N N 42  
C   "C5'"  C N N 43  
C   "C4'"  C N R 44  
C   "O4'"  O N N 45  
C   "C3'"  C N S 46  
C   "O3'"  O N N 47  
C   "C2'"  C N R 48  
C   "O2'"  O N N 49  
C   "C1'"  C N R 50  
C   N1     N N N 51  
C   C2     C N N 52  
C   O2     O N N 53  
C   N3     N N N 54  
C   C4     C N N 55  
C   N4     N N N 56  
C   C5     C N N 57  
C   C6     C N N 58  
C   HOP3   H N N 59  
C   HOP2   H N N 60  
C   "H5'"  H N N 61  
C   "H5''" H N N 62  
C   "H4'"  H N N 63  
C   "H3'"  H N N 64  
C   "HO3'" H N N 65  
C   "H2'"  H N N 66  
C   "HO2'" H N N 67  
C   "H1'"  H N N 68  
C   H41    H N N 69  
C   H42    H N N 70  
C   H5     H N N 71  
C   H6     H N N 72  
DA  OP3    O N N 73  
DA  P      P N N 74  
DA  OP1    O N N 75  
DA  OP2    O N N 76  
DA  "O5'"  O N N 77  
DA  "C5'"  C N N 78  
DA  "C4'"  C N R 79  
DA  "O4'"  O N N 80  
DA  "C3'"  C N S 81  
DA  "O3'"  O N N 82  
DA  "C2'"  C N N 83  
DA  "C1'"  C N R 84  
DA  N9     N Y N 85  
DA  C8     C Y N 86  
DA  N7     N Y N 87  
DA  C5     C Y N 88  
DA  C6     C Y N 89  
DA  N6     N N N 90  
DA  N1     N Y N 91  
DA  C2     C Y N 92  
DA  N3     N Y N 93  
DA  C4     C Y N 94  
DA  HOP3   H N N 95  
DA  HOP2   H N N 96  
DA  "H5'"  H N N 97  
DA  "H5''" H N N 98  
DA  "H4'"  H N N 99  
DA  "H3'"  H N N 100 
DA  "HO3'" H N N 101 
DA  "H2'"  H N N 102 
DA  "H2''" H N N 103 
DA  "H1'"  H N N 104 
DA  H8     H N N 105 
DA  H61    H N N 106 
DA  H62    H N N 107 
DA  H2     H N N 108 
DT  OP3    O N N 109 
DT  P      P N N 110 
DT  OP1    O N N 111 
DT  OP2    O N N 112 
DT  "O5'"  O N N 113 
DT  "C5'"  C N N 114 
DT  "C4'"  C N R 115 
DT  "O4'"  O N N 116 
DT  "C3'"  C N S 117 
DT  "O3'"  O N N 118 
DT  "C2'"  C N N 119 
DT  "C1'"  C N R 120 
DT  N1     N N N 121 
DT  C2     C N N 122 
DT  O2     O N N 123 
DT  N3     N N N 124 
DT  C4     C N N 125 
DT  O4     O N N 126 
DT  C5     C N N 127 
DT  C7     C N N 128 
DT  C6     C N N 129 
DT  HOP3   H N N 130 
DT  HOP2   H N N 131 
DT  "H5'"  H N N 132 
DT  "H5''" H N N 133 
DT  "H4'"  H N N 134 
DT  "H3'"  H N N 135 
DT  "HO3'" H N N 136 
DT  "H2'"  H N N 137 
DT  "H2''" H N N 138 
DT  "H1'"  H N N 139 
DT  H3     H N N 140 
DT  H71    H N N 141 
DT  H72    H N N 142 
DT  H73    H N N 143 
DT  H6     H N N 144 
G   OP3    O N N 145 
G   P      P N N 146 
G   OP1    O N N 147 
G   OP2    O N N 148 
G   "O5'"  O N N 149 
G   "C5'"  C N N 150 
G   "C4'"  C N R 151 
G   "O4'"  O N N 152 
G   "C3'"  C N S 153 
G   "O3'"  O N N 154 
G   "C2'"  C N R 155 
G   "O2'"  O N N 156 
G   "C1'"  C N R 157 
G   N9     N Y N 158 
G   C8     C Y N 159 
G   N7     N Y N 160 
G   C5     C Y N 161 
G   C6     C N N 162 
G   O6     O N N 163 
G   N1     N N N 164 
G   C2     C N N 165 
G   N2     N N N 166 
G   N3     N N N 167 
G   C4     C Y N 168 
G   HOP3   H N N 169 
G   HOP2   H N N 170 
G   "H5'"  H N N 171 
G   "H5''" H N N 172 
G   "H4'"  H N N 173 
G   "H3'"  H N N 174 
G   "HO3'" H N N 175 
G   "H2'"  H N N 176 
G   "HO2'" H N N 177 
G   "H1'"  H N N 178 
G   H8     H N N 179 
G   H1     H N N 180 
G   H21    H N N 181 
G   H22    H N N 182 
HOH O      O N N 183 
HOH H1     H N N 184 
HOH H2     H N N 185 
SPD N1     N N N 186 
SPD C2     C N N 187 
SPD C3     C N N 188 
SPD C4     C N N 189 
SPD C5     C N N 190 
SPD N6     N N N 191 
SPD C7     C N N 192 
SPD C8     C N N 193 
SPD C9     C N N 194 
SPD N10    N N N 195 
SPD HN11   H N N 196 
SPD HN12   H N N 197 
SPD H21    H N N 198 
SPD H22    H N N 199 
SPD H31    H N N 200 
SPD H32    H N N 201 
SPD H41    H N N 202 
SPD H42    H N N 203 
SPD H51    H N N 204 
SPD H52    H N N 205 
SPD HN6    H N N 206 
SPD H71    H N N 207 
SPD H72    H N N 208 
SPD H81    H N N 209 
SPD H82    H N N 210 
SPD H91    H N N 211 
SPD H92    H N N 212 
SPD H101   H N N 213 
SPD H102   H N N 214 
U   OP3    O N N 215 
U   P      P N N 216 
U   OP1    O N N 217 
U   OP2    O N N 218 
U   "O5'"  O N N 219 
U   "C5'"  C N N 220 
U   "C4'"  C N R 221 
U   "O4'"  O N N 222 
U   "C3'"  C N S 223 
U   "O3'"  O N N 224 
U   "C2'"  C N R 225 
U   "O2'"  O N N 226 
U   "C1'"  C N R 227 
U   N1     N N N 228 
U   C2     C N N 229 
U   O2     O N N 230 
U   N3     N N N 231 
U   C4     C N N 232 
U   O4     O N N 233 
U   C5     C N N 234 
U   C6     C N N 235 
U   HOP3   H N N 236 
U   HOP2   H N N 237 
U   "H5'"  H N N 238 
U   "H5''" H N N 239 
U   "H4'"  H N N 240 
U   "H3'"  H N N 241 
U   "HO3'" H N N 242 
U   "H2'"  H N N 243 
U   "HO2'" H N N 244 
U   "H1'"  H N N 245 
U   H3     H N N 246 
U   H5     H N N 247 
U   H6     H N N 248 
# 
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 
A   OP3   P      sing N N 1   
A   OP3   HOP3   sing N N 2   
A   P     OP1    doub N N 3   
A   P     OP2    sing N N 4   
A   P     "O5'"  sing N N 5   
A   OP2   HOP2   sing N N 6   
A   "O5'" "C5'"  sing N N 7   
A   "C5'" "C4'"  sing N N 8   
A   "C5'" "H5'"  sing N N 9   
A   "C5'" "H5''" sing N N 10  
A   "C4'" "O4'"  sing N N 11  
A   "C4'" "C3'"  sing N N 12  
A   "C4'" "H4'"  sing N N 13  
A   "O4'" "C1'"  sing N N 14  
A   "C3'" "O3'"  sing N N 15  
A   "C3'" "C2'"  sing N N 16  
A   "C3'" "H3'"  sing N N 17  
A   "O3'" "HO3'" sing N N 18  
A   "C2'" "O2'"  sing N N 19  
A   "C2'" "C1'"  sing N N 20  
A   "C2'" "H2'"  sing N N 21  
A   "O2'" "HO2'" sing N N 22  
A   "C1'" N9     sing N N 23  
A   "C1'" "H1'"  sing N N 24  
A   N9    C8     sing Y N 25  
A   N9    C4     sing Y N 26  
A   C8    N7     doub Y N 27  
A   C8    H8     sing N N 28  
A   N7    C5     sing Y N 29  
A   C5    C6     sing Y N 30  
A   C5    C4     doub Y N 31  
A   C6    N6     sing N N 32  
A   C6    N1     doub Y N 33  
A   N6    H61    sing N N 34  
A   N6    H62    sing N N 35  
A   N1    C2     sing Y N 36  
A   C2    N3     doub Y N 37  
A   C2    H2     sing N N 38  
A   N3    C4     sing Y N 39  
C   OP3   P      sing N N 40  
C   OP3   HOP3   sing N N 41  
C   P     OP1    doub N N 42  
C   P     OP2    sing N N 43  
C   P     "O5'"  sing N N 44  
C   OP2   HOP2   sing N N 45  
C   "O5'" "C5'"  sing N N 46  
C   "C5'" "C4'"  sing N N 47  
C   "C5'" "H5'"  sing N N 48  
C   "C5'" "H5''" sing N N 49  
C   "C4'" "O4'"  sing N N 50  
C   "C4'" "C3'"  sing N N 51  
C   "C4'" "H4'"  sing N N 52  
C   "O4'" "C1'"  sing N N 53  
C   "C3'" "O3'"  sing N N 54  
C   "C3'" "C2'"  sing N N 55  
C   "C3'" "H3'"  sing N N 56  
C   "O3'" "HO3'" sing N N 57  
C   "C2'" "O2'"  sing N N 58  
C   "C2'" "C1'"  sing N N 59  
C   "C2'" "H2'"  sing N N 60  
C   "O2'" "HO2'" sing N N 61  
C   "C1'" N1     sing N N 62  
C   "C1'" "H1'"  sing N N 63  
C   N1    C2     sing N N 64  
C   N1    C6     sing N N 65  
C   C2    O2     doub N N 66  
C   C2    N3     sing N N 67  
C   N3    C4     doub N N 68  
C   C4    N4     sing N N 69  
C   C4    C5     sing N N 70  
C   N4    H41    sing N N 71  
C   N4    H42    sing N N 72  
C   C5    C6     doub N N 73  
C   C5    H5     sing N N 74  
C   C6    H6     sing N N 75  
DA  OP3   P      sing N N 76  
DA  OP3   HOP3   sing N N 77  
DA  P     OP1    doub N N 78  
DA  P     OP2    sing N N 79  
DA  P     "O5'"  sing N N 80  
DA  OP2   HOP2   sing N N 81  
DA  "O5'" "C5'"  sing N N 82  
DA  "C5'" "C4'"  sing N N 83  
DA  "C5'" "H5'"  sing N N 84  
DA  "C5'" "H5''" sing N N 85  
DA  "C4'" "O4'"  sing N N 86  
DA  "C4'" "C3'"  sing N N 87  
DA  "C4'" "H4'"  sing N N 88  
DA  "O4'" "C1'"  sing N N 89  
DA  "C3'" "O3'"  sing N N 90  
DA  "C3'" "C2'"  sing N N 91  
DA  "C3'" "H3'"  sing N N 92  
DA  "O3'" "HO3'" sing N N 93  
DA  "C2'" "C1'"  sing N N 94  
DA  "C2'" "H2'"  sing N N 95  
DA  "C2'" "H2''" sing N N 96  
DA  "C1'" N9     sing N N 97  
DA  "C1'" "H1'"  sing N N 98  
DA  N9    C8     sing Y N 99  
DA  N9    C4     sing Y N 100 
DA  C8    N7     doub Y N 101 
DA  C8    H8     sing N N 102 
DA  N7    C5     sing Y N 103 
DA  C5    C6     sing Y N 104 
DA  C5    C4     doub Y N 105 
DA  C6    N6     sing N N 106 
DA  C6    N1     doub Y N 107 
DA  N6    H61    sing N N 108 
DA  N6    H62    sing N N 109 
DA  N1    C2     sing Y N 110 
DA  C2    N3     doub Y N 111 
DA  C2    H2     sing N N 112 
DA  N3    C4     sing Y N 113 
DT  OP3   P      sing N N 114 
DT  OP3   HOP3   sing N N 115 
DT  P     OP1    doub N N 116 
DT  P     OP2    sing N N 117 
DT  P     "O5'"  sing N N 118 
DT  OP2   HOP2   sing N N 119 
DT  "O5'" "C5'"  sing N N 120 
DT  "C5'" "C4'"  sing N N 121 
DT  "C5'" "H5'"  sing N N 122 
DT  "C5'" "H5''" sing N N 123 
DT  "C4'" "O4'"  sing N N 124 
DT  "C4'" "C3'"  sing N N 125 
DT  "C4'" "H4'"  sing N N 126 
DT  "O4'" "C1'"  sing N N 127 
DT  "C3'" "O3'"  sing N N 128 
DT  "C3'" "C2'"  sing N N 129 
DT  "C3'" "H3'"  sing N N 130 
DT  "O3'" "HO3'" sing N N 131 
DT  "C2'" "C1'"  sing N N 132 
DT  "C2'" "H2'"  sing N N 133 
DT  "C2'" "H2''" sing N N 134 
DT  "C1'" N1     sing N N 135 
DT  "C1'" "H1'"  sing N N 136 
DT  N1    C2     sing N N 137 
DT  N1    C6     sing N N 138 
DT  C2    O2     doub N N 139 
DT  C2    N3     sing N N 140 
DT  N3    C4     sing N N 141 
DT  N3    H3     sing N N 142 
DT  C4    O4     doub N N 143 
DT  C4    C5     sing N N 144 
DT  C5    C7     sing N N 145 
DT  C5    C6     doub N N 146 
DT  C7    H71    sing N N 147 
DT  C7    H72    sing N N 148 
DT  C7    H73    sing N N 149 
DT  C6    H6     sing N N 150 
G   OP3   P      sing N N 151 
G   OP3   HOP3   sing N N 152 
G   P     OP1    doub N N 153 
G   P     OP2    sing N N 154 
G   P     "O5'"  sing N N 155 
G   OP2   HOP2   sing N N 156 
G   "O5'" "C5'"  sing N N 157 
G   "C5'" "C4'"  sing N N 158 
G   "C5'" "H5'"  sing N N 159 
G   "C5'" "H5''" sing N N 160 
G   "C4'" "O4'"  sing N N 161 
G   "C4'" "C3'"  sing N N 162 
G   "C4'" "H4'"  sing N N 163 
G   "O4'" "C1'"  sing N N 164 
G   "C3'" "O3'"  sing N N 165 
G   "C3'" "C2'"  sing N N 166 
G   "C3'" "H3'"  sing N N 167 
G   "O3'" "HO3'" sing N N 168 
G   "C2'" "O2'"  sing N N 169 
G   "C2'" "C1'"  sing N N 170 
G   "C2'" "H2'"  sing N N 171 
G   "O2'" "HO2'" sing N N 172 
G   "C1'" N9     sing N N 173 
G   "C1'" "H1'"  sing N N 174 
G   N9    C8     sing Y N 175 
G   N9    C4     sing Y N 176 
G   C8    N7     doub Y N 177 
G   C8    H8     sing N N 178 
G   N7    C5     sing Y N 179 
G   C5    C6     sing N N 180 
G   C5    C4     doub Y N 181 
G   C6    O6     doub N N 182 
G   C6    N1     sing N N 183 
G   N1    C2     sing N N 184 
G   N1    H1     sing N N 185 
G   C2    N2     sing N N 186 
G   C2    N3     doub N N 187 
G   N2    H21    sing N N 188 
G   N2    H22    sing N N 189 
G   N3    C4     sing N N 190 
HOH O     H1     sing N N 191 
HOH O     H2     sing N N 192 
SPD N1    C2     sing N N 193 
SPD N1    HN11   sing N N 194 
SPD N1    HN12   sing N N 195 
SPD C2    C3     sing N N 196 
SPD C2    H21    sing N N 197 
SPD C2    H22    sing N N 198 
SPD C3    C4     sing N N 199 
SPD C3    H31    sing N N 200 
SPD C3    H32    sing N N 201 
SPD C4    C5     sing N N 202 
SPD C4    H41    sing N N 203 
SPD C4    H42    sing N N 204 
SPD C5    N6     sing N N 205 
SPD C5    H51    sing N N 206 
SPD C5    H52    sing N N 207 
SPD N6    C7     sing N N 208 
SPD N6    HN6    sing N N 209 
SPD C7    C8     sing N N 210 
SPD C7    H71    sing N N 211 
SPD C7    H72    sing N N 212 
SPD C8    C9     sing N N 213 
SPD C8    H81    sing N N 214 
SPD C8    H82    sing N N 215 
SPD C9    N10    sing N N 216 
SPD C9    H91    sing N N 217 
SPD C9    H92    sing N N 218 
SPD N10   H101   sing N N 219 
SPD N10   H102   sing N N 220 
U   OP3   P      sing N N 221 
U   OP3   HOP3   sing N N 222 
U   P     OP1    doub N N 223 
U   P     OP2    sing N N 224 
U   P     "O5'"  sing N N 225 
U   OP2   HOP2   sing N N 226 
U   "O5'" "C5'"  sing N N 227 
U   "C5'" "C4'"  sing N N 228 
U   "C5'" "H5'"  sing N N 229 
U   "C5'" "H5''" sing N N 230 
U   "C4'" "O4'"  sing N N 231 
U   "C4'" "C3'"  sing N N 232 
U   "C4'" "H4'"  sing N N 233 
U   "O4'" "C1'"  sing N N 234 
U   "C3'" "O3'"  sing N N 235 
U   "C3'" "C2'"  sing N N 236 
U   "C3'" "H3'"  sing N N 237 
U   "O3'" "HO3'" sing N N 238 
U   "C2'" "O2'"  sing N N 239 
U   "C2'" "C1'"  sing N N 240 
U   "C2'" "H2'"  sing N N 241 
U   "O2'" "HO2'" sing N N 242 
U   "C1'" N1     sing N N 243 
U   "C1'" "H1'"  sing N N 244 
U   N1    C2     sing N N 245 
U   N1    C6     sing N N 246 
U   C2    O2     doub N N 247 
U   C2    N3     sing N N 248 
U   N3    C4     sing N N 249 
U   N3    H3     sing N N 250 
U   C4    O4     doub N N 251 
U   C4    C5     sing N N 252 
U   C5    C6     doub N N 253 
U   C5    H5     sing N N 254 
U   C6    H6     sing N N 255 
# 
loop_
_ndb_struct_conf_na.entry_id 
_ndb_struct_conf_na.feature 
1I2X 'double helix'         
1I2X 'a-form double helix'  
1I2X 'b-form double helix'  
1I2X 'bulge loop'           
1I2X 'mismatched base pair' 
# 
loop_
_ndb_struct_na_base_pair.model_number 
_ndb_struct_na_base_pair.i_label_asym_id 
_ndb_struct_na_base_pair.i_label_comp_id 
_ndb_struct_na_base_pair.i_label_seq_id 
_ndb_struct_na_base_pair.i_symmetry 
_ndb_struct_na_base_pair.j_label_asym_id 
_ndb_struct_na_base_pair.j_label_comp_id 
_ndb_struct_na_base_pair.j_label_seq_id 
_ndb_struct_na_base_pair.j_symmetry 
_ndb_struct_na_base_pair.shear 
_ndb_struct_na_base_pair.stretch 
_ndb_struct_na_base_pair.stagger 
_ndb_struct_na_base_pair.buckle 
_ndb_struct_na_base_pair.propeller 
_ndb_struct_na_base_pair.opening 
_ndb_struct_na_base_pair.pair_number 
_ndb_struct_na_base_pair.pair_name 
_ndb_struct_na_base_pair.i_auth_asym_id 
_ndb_struct_na_base_pair.i_auth_seq_id 
_ndb_struct_na_base_pair.i_PDB_ins_code 
_ndb_struct_na_base_pair.j_auth_asym_id 
_ndb_struct_na_base_pair.j_auth_seq_id 
_ndb_struct_na_base_pair.j_PDB_ins_code 
_ndb_struct_na_base_pair.hbond_type_28 
_ndb_struct_na_base_pair.hbond_type_12 
1 B G  1  1_555 A U  11 1_555 -2.559 -0.524 0.555  8.302   1.591   -2.685 1  B_G21:U11_A     B 21  ? A 11  ? 28 ? 
1 B C  2  1_555 A G  10 1_555 0.009  0.084  -0.174 10.228  -26.596 5.634  2  B_C22:G10_A     B 22  ? A 10  ? 19 1 
1 B G  3  1_555 A C  9  1_555 -0.110 -0.121 -0.529 -17.693 -26.512 1.736  3  B_G23:C9_A      B 23  ? A 9   ? 19 1 
1 B DA 4  1_555 A DT 7  1_555 -0.012 0.134  0.065  -10.364 -18.296 11.254 4  B_DA24:DT7_A    B 24  ? A 7   ? ?  1 
1 B DT 5  1_555 A DA 6  1_555 0.114  -0.376 -0.572 7.189   -10.675 -0.363 5  B_DT25:DA6_A    B 25  ? A 6   ? 20 1 
1 B DA 6  1_555 A DT 5  1_555 -0.763 -0.597 -0.755 -8.521  -8.529  -1.719 6  B_DA26:DT5_A    B 26  ? A 5   ? 20 1 
1 B DT 7  1_555 A DA 4  1_555 -0.377 -0.502 -0.262 6.270   -9.029  1.330  7  B_DT27:DA4_A    B 27  ? A 4   ? 20 1 
1 B C  9  1_555 A G  3  1_555 -0.015 -0.343 -0.113 8.789   -18.341 -8.424 8  B_C29:G3_A      B 29  ? A 3   ? 19 1 
1 B G  10 1_555 A C  2  1_555 0.244  0.061  0.353  1.153   -15.922 -8.308 9  B_G30:C2_A      B 30  ? A 2   ? 19 1 
1 B U  11 1_555 A G  1  1_555 2.538  -0.841 0.139  -2.664  0.739   -3.908 10 B_U31:G1_A      B 31  ? A 1   ? 28 ? 
1 D G  1  1_555 C U  11 1_555 -2.139 -0.372 1.008  9.918   -7.615  4.146  11 C_G121:U111_D   C 121 ? D 111 ? 28 1 
1 D C  2  1_555 C G  10 1_555 -0.023 -0.347 0.232  5.076   -16.927 1.551  12 C_C122:G110_D   C 122 ? D 110 ? 19 1 
1 D G  3  1_555 C C  9  1_555 0.866  -0.083 -0.331 -19.547 -15.974 -4.449 13 C_G123:C109_D   C 123 ? D 109 ? 19 1 
1 D DA 4  1_555 C DT 7  1_555 -0.582 -0.129 -0.042 -17.696 -16.203 14.206 14 C_DA124:DT107_D C 124 ? D 107 ? 20 1 
1 D DT 5  1_555 C DA 6  1_555 -0.708 -0.297 -0.008 2.402   -17.759 13.491 15 C_DT125:DA106_D C 125 ? D 106 ? 20 1 
1 D DA 6  1_555 C DT 5  1_555 -0.001 -0.002 0.025  6.334   -18.333 -0.415 16 C_DA126:DT105_D C 126 ? D 105 ? 20 1 
1 D DT 7  1_555 C DA 4  1_555 -0.688 0.062  -0.351 10.987  -9.669  -5.041 17 C_DT127:DA104_D C 127 ? D 104 ? 20 1 
1 D C  9  1_555 C G  3  1_555 -0.240 -0.331 -0.286 17.167  -18.987 2.707  18 C_C129:G103_D   C 129 ? D 103 ? 19 1 
1 D G  10 1_555 C C  2  1_555 -0.575 -0.068 0.052  -5.956  -24.246 1.541  19 C_G130:C102_D   C 130 ? D 102 ? 19 1 
1 D U  11 1_555 C G  1  1_555 2.754  -0.561 0.822  -8.989  -5.020  2.414  20 C_U131:G101_D   C 131 ? D 101 ? 28 ? 
# 
loop_
_ndb_struct_na_base_pair_step.model_number 
_ndb_struct_na_base_pair_step.i_label_asym_id_1 
_ndb_struct_na_base_pair_step.i_label_comp_id_1 
_ndb_struct_na_base_pair_step.i_label_seq_id_1 
_ndb_struct_na_base_pair_step.i_symmetry_1 
_ndb_struct_na_base_pair_step.j_label_asym_id_1 
_ndb_struct_na_base_pair_step.j_label_comp_id_1 
_ndb_struct_na_base_pair_step.j_label_seq_id_1 
_ndb_struct_na_base_pair_step.j_symmetry_1 
_ndb_struct_na_base_pair_step.i_label_asym_id_2 
_ndb_struct_na_base_pair_step.i_label_comp_id_2 
_ndb_struct_na_base_pair_step.i_label_seq_id_2 
_ndb_struct_na_base_pair_step.i_symmetry_2 
_ndb_struct_na_base_pair_step.j_label_asym_id_2 
_ndb_struct_na_base_pair_step.j_label_comp_id_2 
_ndb_struct_na_base_pair_step.j_label_seq_id_2 
_ndb_struct_na_base_pair_step.j_symmetry_2 
_ndb_struct_na_base_pair_step.shift 
_ndb_struct_na_base_pair_step.slide 
_ndb_struct_na_base_pair_step.rise 
_ndb_struct_na_base_pair_step.tilt 
_ndb_struct_na_base_pair_step.roll 
_ndb_struct_na_base_pair_step.twist 
_ndb_struct_na_base_pair_step.x_displacement 
_ndb_struct_na_base_pair_step.y_displacement 
_ndb_struct_na_base_pair_step.helical_rise 
_ndb_struct_na_base_pair_step.inclination 
_ndb_struct_na_base_pair_step.tip 
_ndb_struct_na_base_pair_step.helical_twist 
_ndb_struct_na_base_pair_step.step_number 
_ndb_struct_na_base_pair_step.step_name 
_ndb_struct_na_base_pair_step.i_auth_asym_id_1 
_ndb_struct_na_base_pair_step.i_auth_seq_id_1 
_ndb_struct_na_base_pair_step.i_PDB_ins_code_1 
_ndb_struct_na_base_pair_step.j_auth_asym_id_1 
_ndb_struct_na_base_pair_step.j_auth_seq_id_1 
_ndb_struct_na_base_pair_step.j_PDB_ins_code_1 
_ndb_struct_na_base_pair_step.i_auth_asym_id_2 
_ndb_struct_na_base_pair_step.i_auth_seq_id_2 
_ndb_struct_na_base_pair_step.i_PDB_ins_code_2 
_ndb_struct_na_base_pair_step.j_auth_asym_id_2 
_ndb_struct_na_base_pair_step.j_auth_seq_id_2 
_ndb_struct_na_base_pair_step.j_PDB_ins_code_2 
1 B G  1  1_555 A U  11 1_555 B C  2  1_555 A G  10 1_555 0.147  -1.137 3.203 4.596  6.827  42.890  -2.156 0.224  2.996 9.235   
-6.217 43.636  1  BB_G21C22:G10U11_AA         B 21  ? A 11  ? B 22  ? A 10  ? 
1 B C  2  1_555 A G  10 1_555 B G  3  1_555 A C  9  1_555 -0.223 -1.618 3.838 1.614  19.705 34.624  -4.800 0.526  2.575 30.252  
-2.478 39.720  2  BB_C22G23:C9G10_AA          B 22  ? A 10  ? B 23  ? A 9   ? 
1 B G  3  1_555 A C  9  1_555 B DA 4  1_555 A DT 7  1_555 -0.756 -1.178 3.108 -6.184 5.568  22.777  -4.463 -0.041 2.847 13.532  
15.030 24.230  3  BB_G23DA24:DT7C9_AA         B 23  ? A 9   ? B 24  ? A 7   ? 
1 B DA 4  1_555 A DT 7  1_555 B DT 5  1_555 A DA 6  1_555 -0.210 -0.310 2.735 4.419  3.276  32.806  -0.995 0.978  2.642 5.751   
-7.756 33.251  4  BB_DA24DT25:DA6DT7_AA       B 24  ? A 7   ? B 25  ? A 6   ? 
1 B DT 5  1_555 A DA 6  1_555 B DA 6  1_555 A DT 5  1_555 0.194  -0.518 3.903 3.156  9.012  31.329  -2.751 0.297  3.620 16.222  
-5.681 32.717  5  BB_DT25DA26:DT5DA6_AA       B 25  ? A 6   ? B 26  ? A 5   ? 
1 B DA 6  1_555 A DT 5  1_555 B DT 7  1_555 A DA 4  1_555 0.203  -0.594 2.850 -4.251 5.502  33.805  -1.731 -0.906 2.678 9.339   
7.216  34.493  6  BB_DA26DT27:DA4DT5_AA       B 26  ? A 5   ? B 27  ? A 4   ? 
1 B DT 7  1_555 A DA 4  1_555 B C  9  1_555 A G  3  1_555 0.877  -1.045 3.239 -0.348 0.086  22.212  -2.744 -2.405 3.221 0.222   
0.904  22.215  7  BB_DT27C29:G3DA4_AA         B 27  ? A 4   ? B 29  ? A 3   ? 
1 B C  9  1_555 A G  3  1_555 B G  10 1_555 A C  2  1_555 -0.111 -1.978 3.293 -3.822 12.347 38.071  -4.178 -0.239 2.555 18.296  
5.663  40.128  8  BB_C29G30:C2G3_AA           B 29  ? A 3   ? B 30  ? A 2   ? 
1 B G  10 1_555 A C  2  1_555 B U  11 1_555 A G  1  1_555 0.492  -1.427 3.347 3.588  2.719  42.936  -2.211 -0.311 3.284 3.703   
-4.885 43.160  9  BB_G30U31:G1C2_AA           B 30  ? A 2   ? B 31  ? A 1   ? 
1 B U  11 1_555 A G  1  1_555 D G  1  1_555 C U  11 1_555 0.064  -4.422 2.325 -6.025 12.678 -37.011 5.152  -0.567 3.563 -19.149 
-9.099 -39.496 10 BC_U31G121:U111G1_DA        B 31  ? A 1   ? C 121 ? D 111 ? 
1 D G  1  1_555 C U  11 1_555 D C  2  1_555 C G  10 1_555 -0.214 -1.120 3.495 4.486  3.169  40.473  -1.972 0.826  3.360 4.556   
-6.449 40.828  11 CC_G121C122:G110U111_DD     C 121 ? D 111 ? C 122 ? D 110 ? 
1 D C  2  1_555 C G  10 1_555 D G  3  1_555 C C  9  1_555 0.064  -2.071 3.508 2.835  22.283 43.768  -4.087 0.124  2.263 27.822  
-3.539 48.942  12 CC_C122G123:C109G110_DD     C 122 ? D 110 ? C 123 ? D 109 ? 
1 D G  3  1_555 C C  9  1_555 D DA 4  1_555 C DT 7  1_555 -0.166 -1.128 3.367 -0.438 -2.087 17.144  -2.384 0.265  3.481 -6.966  
1.463  17.275  13 CC_G123DA124:DT107C109_DD   C 123 ? D 109 ? C 124 ? D 107 ? 
1 D DA 4  1_555 C DT 7  1_555 D DT 5  1_555 C DA 6  1_555 -0.112 -0.321 2.834 0.736  -0.367 34.903  -0.487 0.284  2.834 -0.611  
-1.227 34.913  14 CC_DA124DT125:DA106DT107_DD C 124 ? D 107 ? C 125 ? D 106 ? 
1 D DT 5  1_555 C DA 6  1_555 D DA 6  1_555 C DT 5  1_555 -0.440 -0.049 3.219 0.908  7.101  36.413  -1.010 0.811  3.143 11.230  
-1.435 37.087  15 CC_DT125DA126:DT105DA106_DD C 125 ? D 106 ? C 126 ? D 105 ? 
1 D DA 6  1_555 C DT 5  1_555 D DT 7  1_555 C DA 4  1_555 0.570  -1.268 3.116 0.599  8.955  22.831  -5.438 -1.179 2.462 21.582  
-1.444 24.510  16 CC_DA126DT127:DA104DT105_DD C 126 ? D 105 ? C 127 ? D 104 ? 
1 D DT 7  1_555 C DA 4  1_555 D C  9  1_555 C G  3  1_555 1.465  -1.642 3.223 1.602  -2.752 28.762  -2.665 -2.570 3.436 -5.519  
-3.212 28.935  17 CC_DT127C129:G103DA104_DD   C 127 ? D 104 ? C 129 ? D 103 ? 
1 D C  9  1_555 C G  3  1_555 D G  10 1_555 C C  2  1_555 -0.679 -1.876 3.642 -3.076 17.126 32.180  -5.346 0.663  2.424 28.449  
5.110  36.473  18 CC_C129G130:C102G103_DD     C 129 ? D 103 ? C 130 ? D 102 ? 
1 D G  10 1_555 C C  2  1_555 D U  11 1_555 C G  1  1_555 0.062  -1.095 3.507 -5.951 1.903  44.352  -1.622 -0.658 3.424 2.506   
7.836  44.768  19 CC_G130U131:G101C102_DD     C 130 ? D 102 ? C 131 ? D 101 ? 
# 
_atom_sites.entry_id                    1I2X 
_atom_sites.Cartn_transform_axes        ? 
_atom_sites.fract_transf_matrix[1][1]   0.036114 
_atom_sites.fract_transf_matrix[1][2]   -0.000000 
_atom_sites.fract_transf_matrix[1][3]   0.000000 
_atom_sites.fract_transf_matrix[2][1]   0.000000 
_atom_sites.fract_transf_matrix[2][2]   0.020960 
_atom_sites.fract_transf_matrix[2][3]   0.000000 
_atom_sites.fract_transf_matrix[3][1]   0.000000 
_atom_sites.fract_transf_matrix[3][2]   0.000000 
_atom_sites.fract_transf_matrix[3][3]   0.008801 
_atom_sites.fract_transf_vector[1]      0.00000 
_atom_sites.fract_transf_vector[2]      0.00000 
_atom_sites.fract_transf_vector[3]      0.00000 
# 
loop_
_atom_type.symbol 
C 
N 
O 
P 
# 
loop_