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- PDB-5wn0: APE1 exonuclease substrate complex with a C/G match -

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Entry
Database: PDB / ID: 5wn0
TitleAPE1 exonuclease substrate complex with a C/G match
Components
  • DNA (5'-D(*GP*CP*TP*GP*AP*TP*GP*CP*GP*C)-3')
  • DNA (5'-D(*GP*GP*AP*TP*CP*CP*GP*TP*CP*GP*AP*GP*CP*GP*CP*AP*TP*CP*AP*GP*C)-3')
  • DNA (5'-D(P*TP*CP*GP*AP*CP*GP*GP*AP*TP*CP*C)-3')
  • DNA-(apurinic or apyrimidinic site) lyase
KeywordsHYDROLASE / LYASE/DNA / LYASE-DNA complex
Function / homology
Function and homology information


Resolution of Abasic Sites (AP sites) / class II DNA-(apurinic or apyrimidinic site) endonuclease activity / phosphodiesterase activity, acting on 3'-phosphoglycolate-terminated DNA strands / telomere maintenance via base-excision repair / site-specific endodeoxyribonuclease activity, specific for altered base / DNA-(abasic site) binding / double-stranded DNA exodeoxyribonuclease activity / double-stranded telomeric DNA binding / phosphodiesterase I activity / double-stranded DNA 3'-5' DNA exonuclease activity ...Resolution of Abasic Sites (AP sites) / class II DNA-(apurinic or apyrimidinic site) endonuclease activity / phosphodiesterase activity, acting on 3'-phosphoglycolate-terminated DNA strands / telomere maintenance via base-excision repair / site-specific endodeoxyribonuclease activity, specific for altered base / DNA-(abasic site) binding / double-stranded DNA exodeoxyribonuclease activity / double-stranded telomeric DNA binding / phosphodiesterase I activity / double-stranded DNA 3'-5' DNA exonuclease activity / exodeoxyribonuclease III / positive regulation of gene expression via chromosomal CpG island demethylation / Displacement of DNA glycosylase by APEX1 / phosphoric diester hydrolase activity / Hydrolases; Acting on ester bonds; Endodeoxyribonucleases producing 5'-phosphomonoesters / uracil DNA N-glycosylase activity / DNA catabolic process / 3'-5'-DNA exonuclease activity / Resolution of AP sites via the multiple-nucleotide patch replacement pathway / Abasic sugar-phosphate removal via the single-nucleotide replacement pathway / POLB-Dependent Long Patch Base Excision Repair / PCNA-Dependent Long Patch Base Excision Repair / DNA-(apurinic or apyrimidinic site) endonuclease activity / regulation of mRNA stability / 3'-5' exonuclease activity / telomere maintenance / base-excision repair, gap-filling / DNA endonuclease activity / cell redox homeostasis / base-excision repair / chromatin DNA binding / transcription corepressor activity / RNA-DNA hybrid ribonuclease activity / regulation of apoptotic process / endonuclease activity / DNA recombination / chromosome, telomeric region / damaged DNA binding / oxidoreductase activity / transcription coactivator activity / ribosome / nuclear speck / DNA repair / centrosome / nucleolus / perinuclear region of cytoplasm / endoplasmic reticulum / positive regulation of transcription by RNA polymerase II / mitochondrion / DNA binding / RNA binding / nucleoplasm / nucleus / metal ion binding / cytoplasm
Similarity search - Function
AP endonucleases family 1 signature 2. / AP endonuclease 1, conserved site / AP endonucleases family 1 signature 3. / AP endonuclease 1, binding site / AP endonucleases family 1 signature 1. / AP endonuclease 1 / AP endonucleases family 1 profile. / Deoxyribonuclease I; Chain A / Endonuclease/exonuclease/phosphatase / Endonuclease/exonuclease/phosphatase ...AP endonucleases family 1 signature 2. / AP endonuclease 1, conserved site / AP endonucleases family 1 signature 3. / AP endonuclease 1, binding site / AP endonucleases family 1 signature 1. / AP endonuclease 1 / AP endonucleases family 1 profile. / Deoxyribonuclease I; Chain A / Endonuclease/exonuclease/phosphatase / Endonuclease/exonuclease/phosphatase / Endonuclease/Exonuclease/phosphatase family / Endonuclease/exonuclease/phosphatase superfamily / 4-Layer Sandwich / Alpha Beta
Similarity search - Domain/homology
DNA / DNA (> 10) / DNA repair nuclease/redox regulator APEX1
Similarity search - Component
Biological speciesHomo sapiens (human)
synthetic construct (others)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.6 Å
AuthorsFreudenthal, B.D. / Whitaker, A.M.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Environmental Health Sciences (NIH/NIEHS)ES024431 United States
CitationJournal: Nat Commun / Year: 2018
Title: Molecular snapshots of APE1 proofreading mismatches and removing DNA damage.
Authors: Whitaker, A.M. / Flynn, T.S. / Freudenthal, B.D.
History
DepositionJul 31, 2017Deposition site: RCSB / Processing site: RCSB
Revision 1.0Feb 28, 2018Provider: repository / Type: Initial release
Revision 1.1Nov 27, 2019Group: Author supporting evidence / Category: pdbx_audit_support
Item: _pdbx_audit_support.funding_organization / _pdbx_audit_support.grant_number
Revision 2.0Jan 19, 2022Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Database references / Derived calculations / Other / Refinement description / Source and taxonomy / Structure summary
Category: atom_site / cell ...atom_site / cell / database_2 / diffrn / entity / entity_src_gen / ndb_struct_na_base_pair / ndb_struct_na_base_pair_step / pdbx_contact_author / pdbx_nonpoly_scheme / pdbx_poly_seq_scheme / pdbx_struct_assembly_prop / pdbx_validate_close_contact / pdbx_validate_rmsd_angle / pdbx_validate_torsion / refine / refine_hist / refine_ls_restr / refine_ls_shell / reflns / software / struct_conf / struct_conn / struct_mon_prot_cis / struct_ref_seq_dif / struct_sheet_range / symmetry
Item: _cell.volume / _database_2.pdbx_DOI ..._cell.volume / _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _diffrn.pdbx_serial_crystal_experiment / _entity.pdbx_number_of_molecules / _entity_src_gen.gene_src_common_name / _ndb_struct_na_base_pair.buckle / _ndb_struct_na_base_pair.hbond_type_12 / _ndb_struct_na_base_pair.hbond_type_28 / _ndb_struct_na_base_pair.i_auth_asym_id / _ndb_struct_na_base_pair.i_auth_seq_id / _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.j_auth_seq_id / _ndb_struct_na_base_pair.j_label_comp_id / _ndb_struct_na_base_pair.j_label_seq_id / _ndb_struct_na_base_pair.opening / _ndb_struct_na_base_pair.pair_name / _ndb_struct_na_base_pair.propeller / _ndb_struct_na_base_pair.shear / _ndb_struct_na_base_pair.stagger / _ndb_struct_na_base_pair.stretch / _pdbx_contact_author.id / _pdbx_contact_author.identifier_ORCID / _pdbx_contact_author.name_salutation / _pdbx_poly_seq_scheme.auth_mon_id / _pdbx_struct_assembly_prop.value / _refine.B_iso_max / _refine.B_iso_mean / _refine.B_iso_min / _refine.ls_R_factor_R_free / _refine.ls_R_factor_R_work / _refine.ls_R_factor_obs / _refine.ls_d_res_low / _refine.ls_number_reflns_R_free / _refine.ls_number_reflns_R_work / _refine.ls_number_reflns_obs / _refine.ls_percent_reflns_R_free / _refine.ls_percent_reflns_obs / _refine.overall_SU_ML / _refine.pdbx_ls_sigma_F / _refine.pdbx_overall_phase_error / _refine.pdbx_stereochemistry_target_values / _refine.solvent_model_details / _refine_hist.cycle_id / _refine_hist.d_res_low / _refine_hist.number_atoms_solvent / _refine_hist.number_atoms_total / _refine_hist.pdbx_B_iso_mean_solvent / _refine_hist.pdbx_number_residues_total / _refine_ls_restr.dev_ideal / _refine_ls_restr.number / _reflns.B_iso_Wilson_estimate / _software.classification / _software.name / _software.version / _struct_conf.beg_auth_comp_id / _struct_conf.beg_auth_seq_id / _struct_conf.beg_label_comp_id / _struct_conf.beg_label_seq_id / _struct_conf.pdbx_PDB_helix_length / _struct_mon_prot_cis.pdbx_omega_angle / _struct_ref_seq_dif.details / _struct_sheet_range.beg_auth_comp_id / _struct_sheet_range.beg_auth_seq_id / _struct_sheet_range.beg_label_comp_id / _struct_sheet_range.beg_label_seq_id / _struct_sheet_range.end_auth_comp_id / _struct_sheet_range.end_auth_seq_id / _struct_sheet_range.end_label_comp_id / _struct_sheet_range.end_label_seq_id / _symmetry.space_group_name_Hall
Description: Model orientation/position
Details: Shi et al (https://doi.org/10.1093/nar/gkab936) developed an approach for identifying Hoogsteen basepairs which may have been mismodeled as Watson-Crick. This structure was identified in the ...Details: Shi et al (https://doi.org/10.1093/nar/gkab936) developed an approach for identifying Hoogsteen basepairs which may have been mismodeled as Watson-Crick. This structure was identified in the paper as having putative tandem Hoogsteen base pairs flanking the nick in the active site. I reexamined the structure and agree that they were most likely mismodeled, and have been re-modeled as hoogsteen base pairs in this revised model.
Provider: author / Type: Coordinate replacement
Revision 2.1Oct 4, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: DNA-(apurinic or apyrimidinic site) lyase
B: DNA-(apurinic or apyrimidinic site) lyase
C: DNA (5'-D(P*TP*CP*GP*AP*CP*GP*GP*AP*TP*CP*C)-3')
D: DNA (5'-D(*GP*CP*TP*GP*AP*TP*GP*CP*GP*C)-3')
E: DNA (5'-D(*GP*GP*AP*TP*CP*CP*GP*TP*CP*GP*AP*GP*CP*GP*CP*AP*TP*CP*AP*GP*C)-3')


Theoretical massNumber of molelcules
Total (without water)75,1575
Polymers75,1575
Non-polymers00
Water1,24369
1
A: DNA-(apurinic or apyrimidinic site) lyase
C: DNA (5'-D(P*TP*CP*GP*AP*CP*GP*GP*AP*TP*CP*C)-3')
D: DNA (5'-D(*GP*CP*TP*GP*AP*TP*GP*CP*GP*C)-3')
E: DNA (5'-D(*GP*GP*AP*TP*CP*CP*GP*TP*CP*GP*AP*GP*CP*GP*CP*AP*TP*CP*AP*GP*C)-3')


Theoretical massNumber of molelcules
Total (without water)44,0014
Polymers44,0014
Non-polymers00
Water543
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area4400 Å2
ΔGint-26 kcal/mol
Surface area17640 Å2
MethodPISA
2
B: DNA-(apurinic or apyrimidinic site) lyase


Theoretical massNumber of molelcules
Total (without water)31,1561
Polymers31,1561
Non-polymers00
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area0 Å2
ΔGint0 kcal/mol
Surface area12260 Å2
MethodPISA
Unit cell
Length a, b, c (Å)44.264, 61.942, 73.765
Angle α, β, γ (deg.)82.590, 76.880, 85.890
Int Tables number1
Space group name H-MP1
Space group name HallP1

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Components

#1: Protein DNA-(apurinic or apyrimidinic site) lyase / APEX1 / APEX nuclease / APEN / Apurinic-apyrimidinic endonuclease 1 / APE-1 / REF-1 / Redox factor-1


Mass: 31156.477 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: APEX1, APE, APE1, APEX, APX, HAP1, REF1 / Production host: Escherichia coli (E. coli)
References: UniProt: P27695, Hydrolases; Acting on ester bonds, DNA-(apurinic or apyrimidinic site) lyase
#2: DNA chain DNA (5'-D(P*TP*CP*GP*AP*CP*GP*GP*AP*TP*CP*C)-3')


Mass: 3334.186 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#3: DNA chain DNA (5'-D(*GP*CP*TP*GP*AP*TP*GP*CP*GP*C)-3')


Mass: 3061.004 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#4: DNA chain DNA (5'-D(*GP*GP*AP*TP*CP*CP*GP*TP*CP*GP*AP*GP*CP*GP*CP*AP*TP*CP*AP*GP*C)-3')


Mass: 6449.161 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 69 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.6 Å3/Da / Density % sol: 52.7 % / Mosaicity: 0.791 °
Crystal growTemperature: 291 K / Method: vapor diffusion, sitting drop / pH: 5
Details: 7% PEG20000, 100 mM sodium citrate, 15% glycerol, 5 mM calcium chloride

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU MICROMAX-007 / Wavelength: 1.54 Å
DetectorType: DECTRIS PILATUS 200K / Detector: PIXEL / Date: Mar 24, 2017
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.54 Å / Relative weight: 1
ReflectionResolution: 2.6→25 Å / Num. obs: 23502 / % possible obs: 99.6 % / Redundancy: 4 % / Biso Wilson estimate: 36.22 Å2 / Rmerge(I) obs: 0.126 / Rpim(I) all: 0.072 / Rrim(I) all: 0.146 / Χ2: 1.815 / Net I/σ(I): 9.4 / Num. measured all: 94168
Reflection shell

Diffraction-ID: 1

Resolution (Å)Redundancy (%)Rmerge(I) obsNum. unique obsCC1/2Rpim(I) allRrim(I) allΧ2% possible all
2.6-2.6430.56111700.7710.3710.6761.00798.5
2.64-2.693.10.71911200.3540.4740.8663.82798.4
2.69-2.743.40.46612140.8420.2910.5521.97999.4
2.74-2.83.80.38711390.910.2240.4490.96599.7
2.8-2.864.10.32112040.9370.1810.370.92399.9
2.86-2.9340.27411710.9450.1550.3161.035100
2.93-34.10.24811830.9530.1390.2851.04399.9
3-3.084.20.20611740.9680.1130.2361.174100
3.08-3.174.20.16612010.980.0910.191.296100
3.17-3.274.40.12811550.9860.0690.1461.378100
3.27-3.394.40.12512030.9860.0680.1421.624100
3.39-3.533.90.18211580.9560.1040.2112.87199.1
3.53-3.693.70.22511730.8420.1320.2625.49498
3.69-3.884.20.15911540.9490.0880.1823.34299.2
3.88-4.1240.20711910.2550.1190.2393.0599.8
4.12-4.444.40.06511740.9960.0340.0731.337100
4.44-4.884.40.05711850.9960.030.0641.102100
4.88-5.584.30.05611820.9970.030.0641.141100
5.58-7.014.30.05811670.9960.0310.0661.192100
7.01-2540.05711840.9920.0320.0661.64799.9

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Processing

Software
NameVersionClassification
PHENIX1.19.2_4158refinement
HKL-2000data scaling
PDB_EXTRACT3.22data extraction
HKL-2000data reduction
PHENIXphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB entry 5DFF

5dff


Resolution: 2.6→24.91 Å / SU ML: 0.4068 / Cross valid method: FREE R-VALUE / σ(F): 0 / Phase error: 28.7687
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
RfactorNum. reflection% reflection
Rfree0.2749 1739 8.47 %
Rwork0.2169 18795 -
obs0.2217 20534 88.37 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Displacement parametersBiso mean: 46.33 Å2
Refinement stepCycle: LAST / Resolution: 2.6→24.91 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4278 856 0 69 5203
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.01045365
X-RAY DIFFRACTIONf_angle_d1.21897468
X-RAY DIFFRACTIONf_chiral_restr0.0623810
X-RAY DIFFRACTIONf_plane_restr0.0072818
X-RAY DIFFRACTIONf_dihedral_angle_d21.01572017
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
2.6-2.680.37191300.28641313X-RAY DIFFRACTION74.84
2.68-2.760.37211370.27691422X-RAY DIFFRACTION80.44
2.76-2.860.31411380.27611481X-RAY DIFFRACTION83.63
2.86-2.980.36941460.29061536X-RAY DIFFRACTION86.48
2.98-3.110.35181520.25311550X-RAY DIFFRACTION88.14
3.11-3.270.28951520.24571630X-RAY DIFFRACTION91.81
3.27-3.480.26241300.24251510X-RAY DIFFRACTION84.58
3.48-3.750.34871440.28731544X-RAY DIFFRACTION87.15
3.75-4.120.27211220.21261574X-RAY DIFFRACTION87.65
4.12-4.710.21491600.15551713X-RAY DIFFRACTION97.3
4.72-5.930.20691630.15271748X-RAY DIFFRACTION98.91
5.93-24.910.21041650.16361774X-RAY DIFFRACTION99.64

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