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- PDB-1q3c: Crystal structure of the DNA repair enzyme endonuclease-VIII (Nei... -

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Basic information

Entry
Database: PDB / ID: 1q3c
TitleCrystal structure of the DNA repair enzyme endonuclease-VIII (Nei) from E. coli: The E2A mutant at 2.3 resolution.
ComponentsEndonuclease VIII
KeywordsHYDROLASE
Function / homology
Function and homology information


oxidized pyrimidine nucleobase lesion DNA N-glycosylase activity / Hydrolases; Glycosylases; Hydrolysing N-glycosyl compounds / DNA-(apurinic or apyrimidinic site) endonuclease activity / class I DNA-(apurinic or apyrimidinic site) endonuclease activity / DNA-(apurinic or apyrimidinic site) lyase / base-excision repair / damaged DNA binding / zinc ion binding
Similarity search - Function
Endonuclease VIII / Nei, N-terminal / Zinc finger, DNA glycosylase/AP lyase-type / Zinc finger, FPG/IleRS-type / DNA glycosylase/AP lyase, zinc finger domain, DNA-binding site / Zinc finger found in FPG and IleRS / Zinc finger FPG-type signature. / Zinc finger FPG-type profile. / MutM-like, N-terminal / Formamidopyrimidine-DNA glycosylase H2TH domain ...Endonuclease VIII / Nei, N-terminal / Zinc finger, DNA glycosylase/AP lyase-type / Zinc finger, FPG/IleRS-type / DNA glycosylase/AP lyase, zinc finger domain, DNA-binding site / Zinc finger found in FPG and IleRS / Zinc finger FPG-type signature. / Zinc finger FPG-type profile. / MutM-like, N-terminal / Formamidopyrimidine-DNA glycosylase H2TH domain / N-terminal domain of MutM-like DNA repair proteins / Formamidopyrimidine-DNA glycosylase N-terminal domain / Formamidopyrimidine-DNA glycosylase N-terminal domain / MutM-like, N-terminal / Formamidopyrimidine-DNA glycosylase, catalytic domain / Formamidopyrimidine-DNA glycosylase catalytic domain profile. / Formamidopyrimidine-DNA glycosylase H2TH domain / DNA glycosylase/AP lyase, H2TH DNA-binding / Helicase, Ruva Protein; domain 3 - #50 / Helicase, Ruva Protein; domain 3 / Ribosomal protein S13-like, H2TH / Alpha-Beta Barrel / Orthogonal Bundle / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / SYNCHROTRON / AB INITIO PHASING / Resolution: 2.3 Å
AuthorsGolan, G. / Zharkov, D.O. / Feinberg, H. / Fernandes, A.S. / Zaika, E.I. / Kycia, J.H. / Grollman, A.P. / Shoham, G.
CitationJournal: Nucleic Acids Res. / Year: 2005
Title: Structure of the uncomplexed DNA repair enzyme endonuclease VIII indicates significant interdomain flexibility.
Authors: Golan, G. / Zharkov, D.O. / Feinberg, H. / Fernandes, A.S. / Zaika, E.I. / Kycia, J.H. / Grollman, A.P. / Shoham, G.
History
DepositionJul 29, 2003Deposition site: RCSB / Processing site: RCSB
Revision 1.0Aug 3, 2004Provider: repository / Type: Initial release
Revision 1.1Apr 29, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / Version format compliance
Revision 1.3Oct 27, 2021Group: Database references / Derived calculations
Category: database_2 / pdbx_struct_conn_angle ...database_2 / pdbx_struct_conn_angle / struct_conn / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr1_symmetry / _pdbx_struct_conn_angle.ptnr2_auth_comp_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr2_label_atom_id / _pdbx_struct_conn_angle.ptnr2_label_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.ptnr3_symmetry / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr1_symmetry / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_conn.ptnr2_symmetry / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.4Aug 16, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model
Remark 999SEQUENCE SEQUENCING AND CRYSTALLOGRAPHY CONFIRM THE SEQUENCE AS THR A 34 AND ARG A 112.

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Endonuclease VIII
hetero molecules


Theoretical massNumber of molelcules
Total (without water)30,1477
Polymers29,7571
Non-polymers3906
Water1,35175
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
A: Endonuclease VIII
hetero molecules

A: Endonuclease VIII
hetero molecules

A: Endonuclease VIII
hetero molecules

A: Endonuclease VIII
hetero molecules


Theoretical massNumber of molelcules
Total (without water)120,58928
Polymers119,0284
Non-polymers1,56124
Water724
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_555-x,-y,z1
crystal symmetry operation3_555-x,y,-z1
crystal symmetry operation4_555x,-y,-z1
Buried area12430 Å2
ΔGint-96 kcal/mol
Surface area42990 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)57.779, 81.067, 169.935
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number23
Space group name H-MI222

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Components

#1: Protein Endonuclease VIII


Mass: 29756.959 Da / Num. of mol.: 1 / Mutation: E2A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Gene: NEI / Plasmid: PET13A / Production host: Escherichia coli (E. coli) / Strain (production host): B834(DE3)
References: UniProt: P50465, Hydrolases; Glycosylases; Hydrolysing N-glycosyl compounds
#2: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Zn
#3: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Mg
#4: Chemical ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C3H8O3
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 75 / 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: 3.34 Å3/Da / Density % sol: 63.19 %
Crystal growTemperature: 288 K / Method: vapor diffusion, hanging drop / pH: 8
Details: 25% PEG 400, 0.1M Tris-HCl pH 8.0, 0.2M MgCl2, VAPOR DIFFUSION, HANGING DROP, temperature 288K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 5ID-B / Wavelength: 1.102 Å
DetectorType: MAR CCD 165 mm / Detector: CCD / Date: Dec 23, 2001
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.102 Å / Relative weight: 1
ReflectionResolution: 2.3→30 Å / Num. all: 17458 / Num. obs: 17458 / % possible obs: 91.7 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 3.24 % / Biso Wilson estimate: 37.4 Å2 / Rmerge(I) obs: 0.062
Reflection shellResolution: 2.29→2.33 Å / Rmerge(I) obs: 0.487 / Num. unique all: 864 / % possible all: 88.2

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Processing

Software
NameVersionClassification
CNS1refinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing
RefinementMethod to determine structure: AB INITIO PHASING
Starting model: PDB code 1Q3B Crystal structure of the DNA repair enzyme endonuclease-VIII (Nei) from E. coli: The R252A mutant at 2.05 resolution.

1q3b


Resolution: 2.3→26.69 Å / Rfactor Rfree error: 0.008 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0
RfactorNum. reflection% reflectionSelection details
Rfree0.304 1542 9.9 %RANDOM
Rwork0.245 ---
obs0.245 15556 85.6 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 56.0142 Å2 / ksol: 0.335592 e/Å3
Displacement parametersBiso mean: 59.3 Å2
Baniso -1Baniso -2Baniso -3
1--22.85 Å20 Å20 Å2
2--42.94 Å20 Å2
3----20.09 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.46 Å0.36 Å
Luzzati d res low-5 Å
Luzzati sigma a0.72 Å0.58 Å
Refinement stepCycle: LAST / Resolution: 2.3→26.69 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1972 0 21 75 2068
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.007
X-RAY DIFFRACTIONc_angle_deg1.3
X-RAY DIFFRACTIONc_dihedral_angle_d23.6
X-RAY DIFFRACTIONc_improper_angle_d0.8
X-RAY DIFFRACTIONc_mcbond_it1.321.5
X-RAY DIFFRACTIONc_mcangle_it2.212
X-RAY DIFFRACTIONc_scbond_it1.952
X-RAY DIFFRACTIONc_scangle_it32.5
LS refinement shellResolution: 2.3→2.44 Å / Rfactor Rfree error: 0.031 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.465 220 10.1 %
Rwork0.422 1969 -
obs--74.3 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2WATER_REP.PARAMWATER.TOP
X-RAY DIFFRACTION3ION.PARAMION.TOP
X-RAY DIFFRACTION4GOL.PARGOL.TOP

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