data_2L6I
# 
_entry.id   2L6I 
# 
_audit_conform.dict_name       mmcif_pdbx.dic 
_audit_conform.dict_version    5.391 
_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   2L6I         pdb_00002l6i 10.2210/pdb2l6i/pdb 
RCSB  RCSB102018   ?            ?                   
WWPDB D_1000102018 ?            ?                   
# 
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 2011-03-23 
2 'Structure model' 1 1 2011-07-13 
3 'Structure model' 1 2 2024-05-01 
# 
_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' 'Data collection'           
3 3 'Structure model' 'Database references'       
# 
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 3 'Structure model' chem_comp_atom    
2 3 'Structure model' chem_comp_bond    
3 3 'Structure model' database_2        
4 3 'Structure model' pdbx_nmr_software 
# 
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 3 'Structure model' '_database_2.pdbx_DOI'                
2 3 'Structure model' '_database_2.pdbx_database_accession' 
3 3 'Structure model' '_pdbx_nmr_software.name'             
# 
_pdbx_database_status.deposit_site                    BMRB 
_pdbx_database_status.entry_id                        2L6I 
_pdbx_database_status.process_site                    RCSB 
_pdbx_database_status.recvd_initial_deposition_date   2010-11-21 
_pdbx_database_status.SG_entry                        ? 
_pdbx_database_status.status_code                     REL 
_pdbx_database_status.status_code_mr                  REL 
_pdbx_database_status.status_code_sf                  ? 
_pdbx_database_status.status_code_cs                  ? 
_pdbx_database_status.pdb_format_compatible           Y 
_pdbx_database_status.status_code_nmr_data            ? 
_pdbx_database_status.methods_development_category    ? 
# 
loop_
_audit_author.name 
_audit_author.pdbx_ordinal 
'Lee, C.'       1 
'Li, L.'        2 
'Giedroc, D.P.' 3 
# 
_citation.id                        primary 
_citation.title                     
'The solution structure of coronaviral stem-loop 2 (SL2) reveals a canonical CUYG tetraloop fold.' 
_citation.journal_abbrev            'Febs Lett.' 
_citation.journal_volume            585 
_citation.page_first                1049 
_citation.page_last                 1053 
_citation.year                      2011 
_citation.journal_id_ASTM           FEBLAL 
_citation.country                   NE 
_citation.journal_id_ISSN           0014-5793 
_citation.journal_id_CSD            0165 
_citation.book_publisher            ? 
_citation.pdbx_database_id_PubMed   21382373 
_citation.pdbx_database_id_DOI      10.1016/j.febslet.2011.03.002 
# 
loop_
_citation_author.citation_id 
_citation_author.name 
_citation_author.ordinal 
_citation_author.identifier_ORCID 
primary 'Lee, C.W.'     1 ? 
primary 'Li, L.'        2 ? 
primary 'Giedroc, D.P.' 3 ? 
# 
_entity.id                         1 
_entity.type                       polymer 
_entity.src_method                 syn 
_entity.pdbx_description           
;RNA (5'-R(*GP*AP*UP*CP*UP*CP*UP*UP*GP*UP*AP*GP*AP*UP*CP*A)-3')
;
_entity.formula_weight             5060.023 
_entity.pdbx_number_of_molecules   1 
_entity.pdbx_ec                    ? 
_entity.pdbx_mutation              ? 
_entity.pdbx_fragment              ? 
_entity.details                    ? 
# 
_entity_poly.entity_id                      1 
_entity_poly.type                           polyribonucleotide 
_entity_poly.nstd_linkage                   no 
_entity_poly.nstd_monomer                   no 
_entity_poly.pdbx_seq_one_letter_code       GAUCUCUUGUAGAUCA 
_entity_poly.pdbx_seq_one_letter_code_can   GAUCUCUUGUAGAUCA 
_entity_poly.pdbx_strand_id                 A 
_entity_poly.pdbx_target_identifier         ? 
# 
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  A n 
1 3  U n 
1 4  C n 
1 5  U n 
1 6  C n 
1 7  U n 
1 8  U n 
1 9  G n 
1 10 U n 
1 11 A n 
1 12 G n 
1 13 A n 
1 14 U n 
1 15 C n 
1 16 A 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 
G 'RNA linking' y "GUANOSINE-5'-MONOPHOSPHATE" ? 'C10 H14 N5 O8 P' 363.221 
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  42 42 G G A . n 
A 1 2  A 2  43 43 A A A . n 
A 1 3  U 3  44 44 U U A . n 
A 1 4  C 4  45 45 C C A . n 
A 1 5  U 5  46 46 U U A . n 
A 1 6  C 6  47 47 C C A . n 
A 1 7  U 7  48 48 U U A . n 
A 1 8  U 8  49 49 U U A . n 
A 1 9  G 9  50 50 G G A . n 
A 1 10 U 10 51 51 U U A . n 
A 1 11 A 11 52 52 A A A . n 
A 1 12 G 12 53 53 G G A . n 
A 1 13 A 13 54 54 A A A . n 
A 1 14 U 14 55 55 U U A . n 
A 1 15 C 15 56 56 C C A . n 
A 1 16 A 16 57 57 A A A . n 
# 
_exptl.absorpt_coefficient_mu     ? 
_exptl.absorpt_correction_T_max   ? 
_exptl.absorpt_correction_T_min   ? 
_exptl.absorpt_correction_type    ? 
_exptl.absorpt_process_details    ? 
_exptl.crystals_number            ? 
_exptl.details                    ? 
_exptl.entry_id                   2L6I 
_exptl.method                     'SOLUTION NMR' 
_exptl.method_details             ? 
# 
_struct.entry_id                  2L6I 
_struct.title                     'Solution structure of coronaviral stem-loop 2 (SL2)' 
_struct.pdbx_model_details        ? 
_struct.pdbx_CASP_flag            N 
_struct.pdbx_model_type_details   ? 
# 
_struct_keywords.entry_id        2L6I 
_struct_keywords.pdbx_keywords   RNA 
_struct_keywords.text            'RNA tetraloop, severe acute respiratory syndrome, mouse hepatitis virus, coronavirus, RNA' 
# 
_struct_asym.id                            A 
_struct_asym.pdbx_blank_PDB_chainid_flag   N 
_struct_asym.pdbx_modified                 N 
_struct_asym.entity_id                     1 
_struct_asym.details                       ? 
# 
_struct_ref.id                         1 
_struct_ref.db_name                    PDB 
_struct_ref.db_code                    2L6I 
_struct_ref.pdbx_db_accession          2L6I 
_struct_ref.entity_id                  1 
_struct_ref.pdbx_align_begin           ? 
_struct_ref.pdbx_seq_one_letter_code   ? 
_struct_ref.pdbx_db_isoform            ? 
# 
_struct_ref_seq.align_id                      1 
_struct_ref_seq.ref_id                        1 
_struct_ref_seq.pdbx_PDB_id_code              2L6I 
_struct_ref_seq.pdbx_strand_id                A 
_struct_ref_seq.seq_align_beg                 1 
_struct_ref_seq.pdbx_seq_align_beg_ins_code   ? 
_struct_ref_seq.seq_align_end                 16 
_struct_ref_seq.pdbx_seq_align_end_ins_code   ? 
_struct_ref_seq.pdbx_db_accession             2L6I 
_struct_ref_seq.db_align_beg                  42 
_struct_ref_seq.pdbx_db_align_beg_ins_code    ? 
_struct_ref_seq.db_align_end                  57 
_struct_ref_seq.pdbx_db_align_end_ins_code    ? 
_struct_ref_seq.pdbx_auth_seq_align_beg       42 
_struct_ref_seq.pdbx_auth_seq_align_end       57 
# 
_pdbx_struct_assembly.id                   1 
_pdbx_struct_assembly.details              author_defined_assembly 
_pdbx_struct_assembly.method_details       ? 
_pdbx_struct_assembly.oligomeric_details   monomeric 
_pdbx_struct_assembly.oligomeric_count     1 
# 
_pdbx_struct_assembly_gen.assembly_id       1 
_pdbx_struct_assembly_gen.oper_expression   1 
_pdbx_struct_assembly_gen.asym_id_list      A 
# 
_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 
# 
_struct_biol.id        1 
_struct_biol.details   ? 
# 
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 A C 15 N3 ? ? A G 42 A C 56 1_555 ? ? ? ? ? ? WATSON-CRICK  ? ? ? 
hydrog2  hydrog ? ? A G 1 N2 ? ? ? 1_555 A C 15 O2 ? ? A G 42 A C 56 1_555 ? ? ? ? ? ? WATSON-CRICK  ? ? ? 
hydrog3  hydrog ? ? A G 1 O6 ? ? ? 1_555 A C 15 N4 ? ? A G 42 A C 56 1_555 ? ? ? ? ? ? WATSON-CRICK  ? ? ? 
hydrog4  hydrog ? ? A A 2 N1 ? ? ? 1_555 A U 14 N3 ? ? A A 43 A U 55 1_555 ? ? ? ? ? ? WATSON-CRICK  ? ? ? 
hydrog5  hydrog ? ? A A 2 N6 ? ? ? 1_555 A U 14 O4 ? ? A A 43 A U 55 1_555 ? ? ? ? ? ? WATSON-CRICK  ? ? ? 
hydrog6  hydrog ? ? A U 3 N3 ? ? ? 1_555 A A 13 N1 ? ? A U 44 A A 54 1_555 ? ? ? ? ? ? WATSON-CRICK  ? ? ? 
hydrog7  hydrog ? ? A U 3 O4 ? ? ? 1_555 A A 13 N6 ? ? A U 44 A A 54 1_555 ? ? ? ? ? ? WATSON-CRICK  ? ? ? 
hydrog8  hydrog ? ? A C 4 N3 ? ? ? 1_555 A G 12 N1 ? ? A C 45 A G 53 1_555 ? ? ? ? ? ? WATSON-CRICK  ? ? ? 
hydrog9  hydrog ? ? A C 4 N4 ? ? ? 1_555 A G 12 O6 ? ? A C 45 A G 53 1_555 ? ? ? ? ? ? WATSON-CRICK  ? ? ? 
hydrog10 hydrog ? ? A C 4 O2 ? ? ? 1_555 A G 12 N2 ? ? A C 45 A G 53 1_555 ? ? ? ? ? ? WATSON-CRICK  ? ? ? 
hydrog11 hydrog ? ? A U 5 N3 ? ? ? 1_555 A A 11 N1 ? ? A U 46 A A 52 1_555 ? ? ? ? ? ? WATSON-CRICK  ? ? ? 
hydrog12 hydrog ? ? A U 5 O4 ? ? ? 1_555 A A 11 N6 ? ? A U 46 A A 52 1_555 ? ? ? ? ? ? WATSON-CRICK  ? ? ? 
hydrog13 hydrog ? ? A C 6 N3 ? ? ? 1_555 A G 9  N1 ? ? A C 47 A G 50 1_555 ? ? ? ? ? ? WATSON-CRICK  ? ? ? 
hydrog14 hydrog ? ? A C 6 N4 ? ? ? 1_555 A G 9  O6 ? ? A C 47 A G 50 1_555 ? ? ? ? ? ? WATSON-CRICK  ? ? ? 
hydrog15 hydrog ? ? A C 6 O2 ? ? ? 1_555 A G 9  N2 ? ? A C 47 A G 50 1_555 ? ? ? ? ? ? WATSON-CRICK  ? ? ? 
hydrog16 hydrog ? ? A U 8 O2 ? ? ? 1_555 A G 9  N1 ? ? A U 49 A G 50 1_555 ? ? ? ? ? ? 'U-G MISPAIR' ? ? ? 
# 
_struct_conn_type.id          hydrog 
_struct_conn_type.criteria    ? 
_struct_conn_type.reference   ? 
# 
loop_
_pdbx_validate_rmsd_angle.id 
_pdbx_validate_rmsd_angle.PDB_model_num 
_pdbx_validate_rmsd_angle.auth_atom_id_1 
_pdbx_validate_rmsd_angle.auth_asym_id_1 
_pdbx_validate_rmsd_angle.auth_comp_id_1 
_pdbx_validate_rmsd_angle.auth_seq_id_1 
_pdbx_validate_rmsd_angle.PDB_ins_code_1 
_pdbx_validate_rmsd_angle.label_alt_id_1 
_pdbx_validate_rmsd_angle.auth_atom_id_2 
_pdbx_validate_rmsd_angle.auth_asym_id_2 
_pdbx_validate_rmsd_angle.auth_comp_id_2 
_pdbx_validate_rmsd_angle.auth_seq_id_2 
_pdbx_validate_rmsd_angle.PDB_ins_code_2 
_pdbx_validate_rmsd_angle.label_alt_id_2 
_pdbx_validate_rmsd_angle.auth_atom_id_3 
_pdbx_validate_rmsd_angle.auth_asym_id_3 
_pdbx_validate_rmsd_angle.auth_comp_id_3 
_pdbx_validate_rmsd_angle.auth_seq_id_3 
_pdbx_validate_rmsd_angle.PDB_ins_code_3 
_pdbx_validate_rmsd_angle.label_alt_id_3 
_pdbx_validate_rmsd_angle.angle_value 
_pdbx_validate_rmsd_angle.angle_target_value 
_pdbx_validate_rmsd_angle.angle_deviation 
_pdbx_validate_rmsd_angle.angle_standard_deviation 
_pdbx_validate_rmsd_angle.linker_flag 
1 6  "C1'" A U 48 ? ? "O4'" A U 48 ? ? "C4'" A U 48 ? ? 103.02 109.70 -6.68 0.70 N 
2 26 "C1'" A U 48 ? ? "O4'" A U 48 ? ? "C4'" A U 48 ? ? 103.11 109.70 -6.59 0.70 N 
3 27 "C1'" A U 48 ? ? "O4'" A U 48 ? ? "C4'" A U 48 ? ? 104.48 109.70 -5.22 0.70 N 
# 
_pdbx_nmr_ensemble.average_constraint_violations_per_residue     ? 
_pdbx_nmr_ensemble.average_constraints_per_residue               ? 
_pdbx_nmr_ensemble.average_distance_constraint_violation         ? 
_pdbx_nmr_ensemble.average_torsion_angle_constraint_violation    ? 
_pdbx_nmr_ensemble.conformer_selection_criteria                  'structures with the lowest energy' 
_pdbx_nmr_ensemble.conformers_calculated_total_number            100 
_pdbx_nmr_ensemble.conformers_submitted_total_number             27 
_pdbx_nmr_ensemble.distance_constraint_violation_method          ? 
_pdbx_nmr_ensemble.entry_id                                      2L6I 
_pdbx_nmr_ensemble.maximum_distance_constraint_violation         ? 
_pdbx_nmr_ensemble.maximum_lower_distance_constraint_violation   ? 
_pdbx_nmr_ensemble.maximum_torsion_angle_constraint_violation    ? 
_pdbx_nmr_ensemble.maximum_upper_distance_constraint_violation   ? 
_pdbx_nmr_ensemble.torsion_angle_constraint_violation_method     ? 
# 
_pdbx_nmr_representative.conformer_id         1 
_pdbx_nmr_representative.entry_id             2L6I 
_pdbx_nmr_representative.selection_criteria   'lowest energy' 
# 
loop_
_pdbx_nmr_sample_details.contents 
_pdbx_nmr_sample_details.solution_id 
_pdbx_nmr_sample_details.solvent_system 
'0.8-2 mM SL2, 0.8-2 mM [U-13C; U-15N]-Ura SL2, 10 mM potassium phosphate, 0.1 mM DSS, 90%H2O/10%D2O' 1 '90% H2O/10% D2O' 
'0.8-2 mM SL2, 0.8-2 mM [U-13C; U-15N]-Ura SL2, 10 mM potassium phosphate, 0.1 mM DSS, 100%D2O'       2 '100% D2O'        
# 
loop_
_pdbx_nmr_exptl_sample.component 
_pdbx_nmr_exptl_sample.concentration 
_pdbx_nmr_exptl_sample.concentration_range 
_pdbx_nmr_exptl_sample.concentration_units 
_pdbx_nmr_exptl_sample.isotopic_labeling 
_pdbx_nmr_exptl_sample.solution_id 
SL2                   ?   0.8-2 mM ?                    1 
'13C,15N SL2'         ?   0.8-2 mM '[U-13C; U-15N]-Ura' 1 
'potassium phosphate' 10  ?     mM ?                    1 
DSS                   0.1 ?     mM ?                    1 
SL2                   ?   0.8-2 mM ?                    2 
'13C,15N SL2'         ?   0.8-2 mM '[U-13C; U-15N]-Ura' 2 
'potassium phosphate' 10  ?     mM ?                    2 
DSS                   0.1 ?     mM ?                    2 
# 
loop_
_pdbx_nmr_exptl_sample_conditions.conditions_id 
_pdbx_nmr_exptl_sample_conditions.ionic_strength 
_pdbx_nmr_exptl_sample_conditions.pH 
_pdbx_nmr_exptl_sample_conditions.pressure 
_pdbx_nmr_exptl_sample_conditions.pressure_units 
_pdbx_nmr_exptl_sample_conditions.temperature 
_pdbx_nmr_exptl_sample_conditions.temperature_units 
1 0 6.0 ambient ? 283 K 
2 0 6.0 ambient ? 298 K 
# 
loop_
_pdbx_nmr_exptl.conditions_id 
_pdbx_nmr_exptl.experiment_id 
_pdbx_nmr_exptl.solution_id 
_pdbx_nmr_exptl.type 
1 1 1 '2D 1H-1H NOESY'   
1 2 1 '2D 1H-1H TOCSY'   
1 3 1 '2D 1H-13C HSQC'   
1 4 1 '3D HCCH-TOCSY'    
1 5 1 '2D HNCCCH'        
1 6 1 '2D H(CCN)H-TOCSY' 
1 7 1 '2D HCN-HMQC'      
1 8 1 '2D HCN-TROSY'     
1 9 1 '2D HCNCH'         
2 1 2 '2D 1H-1H NOESY'   
2 2 2 '2D 1H-1H TOCSY'   
2 3 2 '2D 1H-13C HSQC'   
2 4 2 '3D HCCH-TOCSY'    
2 5 2 '2D HNCCCH'        
2 6 2 '2D H(CCN)H-TOCSY' 
2 7 2 '2D HCN-HMQC'      
2 8 2 '2D HCN-TROSY'     
2 9 2 '2D HCNCH'         
# 
_pdbx_nmr_refine.entry_id           2L6I 
_pdbx_nmr_refine.method             'DGSA-distance geometry simulated annealing, molecular dynamics' 
_pdbx_nmr_refine.details            ? 
_pdbx_nmr_refine.software_ordinal   1 
# 
loop_
_pdbx_nmr_software.authors 
_pdbx_nmr_software.classification 
_pdbx_nmr_software.name 
_pdbx_nmr_software.version 
_pdbx_nmr_software.ordinal 
'Schwieters, Kuszewski, Tjandra and Clore'          refinement                  'X-PLOR NIH' ?   1 
'Guntert, Mumenthaler and Wuthrich'                 'chemical shift assignment' CYANA        2.1 2 
'Johnson, One Moon Scientific'                      'peak picking'              NMRView      ?   3 
'Johnson, One Moon Scientific'                      'chemical shift assignment' NMRView      ?   4 
Goddard                                             'chemical shift assignment' Sparky       ?   5 
Goddard                                             'peak picking'              Sparky       ?   6 
'Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax' processing                  NMRPipe      ?   7 
# 
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  
G OP3    O N N 73  
G P      P N N 74  
G OP1    O N N 75  
G OP2    O N N 76  
G "O5'"  O N N 77  
G "C5'"  C N N 78  
G "C4'"  C N R 79  
G "O4'"  O N N 80  
G "C3'"  C N S 81  
G "O3'"  O N N 82  
G "C2'"  C N R 83  
G "O2'"  O N N 84  
G "C1'"  C N R 85  
G N9     N Y N 86  
G C8     C Y N 87  
G N7     N Y N 88  
G C5     C Y N 89  
G C6     C N N 90  
G O6     O N N 91  
G N1     N N N 92  
G C2     C N N 93  
G N2     N N N 94  
G N3     N N N 95  
G C4     C Y N 96  
G HOP3   H N N 97  
G HOP2   H N N 98  
G "H5'"  H N N 99  
G "H5''" H N N 100 
G "H4'"  H N N 101 
G "H3'"  H N N 102 
G "HO3'" H N N 103 
G "H2'"  H N N 104 
G "HO2'" H N N 105 
G "H1'"  H N N 106 
G H8     H N N 107 
G H1     H N N 108 
G H21    H N N 109 
G H22    H N N 110 
U OP3    O N N 111 
U P      P N N 112 
U OP1    O N N 113 
U OP2    O N N 114 
U "O5'"  O N N 115 
U "C5'"  C N N 116 
U "C4'"  C N R 117 
U "O4'"  O N N 118 
U "C3'"  C N S 119 
U "O3'"  O N N 120 
U "C2'"  C N R 121 
U "O2'"  O N N 122 
U "C1'"  C N R 123 
U N1     N N N 124 
U C2     C N N 125 
U O2     O N N 126 
U N3     N N N 127 
U C4     C N N 128 
U O4     O N N 129 
U C5     C N N 130 
U C6     C N N 131 
U HOP3   H N N 132 
U HOP2   H N N 133 
U "H5'"  H N N 134 
U "H5''" H N N 135 
U "H4'"  H N N 136 
U "H3'"  H N N 137 
U "HO3'" H N N 138 
U "H2'"  H N N 139 
U "HO2'" H N N 140 
U "H1'"  H N N 141 
U H3     H N N 142 
U H5     H N N 143 
U H6     H N N 144 
# 
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  
G OP3   P      sing N N 76  
G OP3   HOP3   sing N N 77  
G P     OP1    doub N N 78  
G P     OP2    sing N N 79  
G P     "O5'"  sing N N 80  
G OP2   HOP2   sing N N 81  
G "O5'" "C5'"  sing N N 82  
G "C5'" "C4'"  sing N N 83  
G "C5'" "H5'"  sing N N 84  
G "C5'" "H5''" sing N N 85  
G "C4'" "O4'"  sing N N 86  
G "C4'" "C3'"  sing N N 87  
G "C4'" "H4'"  sing N N 88  
G "O4'" "C1'"  sing N N 89  
G "C3'" "O3'"  sing N N 90  
G "C3'" "C2'"  sing N N 91  
G "C3'" "H3'"  sing N N 92  
G "O3'" "HO3'" sing N N 93  
G "C2'" "O2'"  sing N N 94  
G "C2'" "C1'"  sing N N 95  
G "C2'" "H2'"  sing N N 96  
G "O2'" "HO2'" sing N N 97  
G "C1'" N9     sing N N 98  
G "C1'" "H1'"  sing N N 99  
G N9    C8     sing Y N 100 
G N9    C4     sing Y N 101 
G C8    N7     doub Y N 102 
G C8    H8     sing N N 103 
G N7    C5     sing Y N 104 
G C5    C6     sing N N 105 
G C5    C4     doub Y N 106 
G C6    O6     doub N N 107 
G C6    N1     sing N N 108 
G N1    C2     sing N N 109 
G N1    H1     sing N N 110 
G C2    N2     sing N N 111 
G C2    N3     doub N N 112 
G N2    H21    sing N N 113 
G N2    H22    sing N N 114 
G N3    C4     sing N N 115 
U OP3   P      sing N N 116 
U OP3   HOP3   sing N N 117 
U P     OP1    doub N N 118 
U P     OP2    sing N N 119 
U P     "O5'"  sing N N 120 
U OP2   HOP2   sing N N 121 
U "O5'" "C5'"  sing N N 122 
U "C5'" "C4'"  sing N N 123 
U "C5'" "H5'"  sing N N 124 
U "C5'" "H5''" sing N N 125 
U "C4'" "O4'"  sing N N 126 
U "C4'" "C3'"  sing N N 127 
U "C4'" "H4'"  sing N N 128 
U "O4'" "C1'"  sing N N 129 
U "C3'" "O3'"  sing N N 130 
U "C3'" "C2'"  sing N N 131 
U "C3'" "H3'"  sing N N 132 
U "O3'" "HO3'" sing N N 133 
U "C2'" "O2'"  sing N N 134 
U "C2'" "C1'"  sing N N 135 
U "C2'" "H2'"  sing N N 136 
U "O2'" "HO2'" sing N N 137 
U "C1'" N1     sing N N 138 
U "C1'" "H1'"  sing N N 139 
U N1    C2     sing N N 140 
U N1    C6     sing N N 141 
U C2    O2     doub N N 142 
U C2    N3     sing N N 143 
U N3    C4     sing N N 144 
U N3    H3     sing N N 145 
U C4    O4     doub N N 146 
U C4    C5     sing N N 147 
U C5    C6     doub N N 148 
U C5    H5     sing N N 149 
U C6    H6     sing N N 150 
# 
loop_
_ndb_struct_conf_na.entry_id 
_ndb_struct_conf_na.feature 
2L6I 'a-form double helix' 
2L6I 'internal loop'       
# 
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 A G 1 1_555 A C 15 1_555 -0.109 -0.106 0.243  11.464 -1.119  -2.090 1 A_G42:C56_A A 42 ? A 56 ? 19 1 
1 A A 2 1_555 A U 14 1_555 -0.004 -0.104 -0.162 0.250  -14.130 -0.265 2 A_A43:U55_A A 43 ? A 55 ? 20 1 
1 A U 3 1_555 A A 13 1_555 -0.018 -0.099 0.077  2.963  -12.804 -2.664 3 A_U44:A54_A A 44 ? A 54 ? 20 1 
1 A C 4 1_555 A G 12 1_555 0.137  -0.134 -0.167 1.605  -12.317 -0.136 4 A_C45:G53_A A 45 ? A 53 ? 19 1 
1 A U 5 1_555 A A 11 1_555 -0.033 -0.084 0.125  -3.719 -3.406  -2.236 5 A_U46:A52_A A 46 ? A 52 ? 20 1 
1 A C 6 1_555 A G 9  1_555 0.106  -0.128 -0.109 10.911 7.372   -1.433 6 A_C47:G50_A A 47 ? A 50 ? 19 1 
# 
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 A G 1 1_555 A C 15 1_555 A A 2 1_555 A U 14 1_555 -0.051 -1.701 4.016 1.682  9.764  30.878 -5.031 0.432  3.330 17.773 -3.061 
32.392 1 AA_G42A43:U55C56_AA A 42 ? A 56 ? A 43 ? A 55 ? 
1 A A 2 1_555 A U 14 1_555 A U 3 1_555 A A 13 1_555 -0.426 -1.652 3.232 -1.072 5.506  30.169 -4.148 0.605  2.905 10.465 2.038  
30.674 2 AA_A43U44:A54U55_AA A 43 ? A 55 ? A 44 ? A 54 ? 
1 A U 3 1_555 A A 13 1_555 A C 4 1_555 A G 12 1_555 -0.029 -1.598 3.226 1.225  14.294 30.937 -4.749 0.223  2.285 25.170 -2.157 
34.027 3 AA_U44C45:G53A54_AA A 44 ? A 54 ? A 45 ? A 53 ? 
1 A C 4 1_555 A G 12 1_555 A U 5 1_555 A A 11 1_555 -0.062 -1.681 3.882 -1.622 2.745  29.762 -3.916 -0.271 3.714 5.326  3.145  
29.929 4 AA_C45U46:A52G53_AA A 45 ? A 53 ? A 46 ? A 52 ? 
1 A U 5 1_555 A A 11 1_555 A C 6 1_555 A G 9  1_555 -0.459 -1.702 3.002 -2.192 15.690 27.723 -5.370 0.520  1.830 29.857 4.171  
31.854 5 AA_U46C47:G50A52_AA A 46 ? A 52 ? A 47 ? A 50 ? 
# 
loop_
_pdbx_nmr_spectrometer.field_strength 
_pdbx_nmr_spectrometer.manufacturer 
_pdbx_nmr_spectrometer.model 
_pdbx_nmr_spectrometer.spectrometer_id 
_pdbx_nmr_spectrometer.type 
500 Varian INOVA 1 'Varian INOVA' 
600 Varian INOVA 2 'Varian INOVA' 
# 
_atom_sites.entry_id                    2L6I 
_atom_sites.fract_transf_matrix[1][1]   1.000000 
_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]   1.000000 
_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]   1.000000 
_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 
H 
N 
O 
P 
# 
loop_