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- PDB-3zda: Structure of E. coli ExoIX in complex with a fragment of the Flap... -

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Basic information

Entry
Database: PDB / ID: 3zda
TitleStructure of E. coli ExoIX in complex with a fragment of the Flap1 DNA oligonucleotide, potassium and magnesium
Components
  • 5'-D(*AP*AP*GP*CP*GP*CP)-3'
  • 5'-D(*GP*CP*GP*CP)-3'
  • PROTEIN XNI
KeywordsHYDROLASE/DNA / HYDROLASE-DNA COMPLEX / FLAP ENDONUCLEASE / DNA BINDING
Function / homology
Function and homology information


DNA replication, Okazaki fragment processing / 5'-flap endonuclease activity / potassium ion binding / Hydrolases; Acting on ester bonds / magnesium ion binding / DNA binding
Similarity search - Function
Flap endonuclease Xni / Flap endonuclease / 5'-nuclease / DNA polymerase I-like, H3TH domain / 5'-3' exonuclease, C-terminal SAM fold / 5'-3' exonuclease, alpha-helical arch, N-terminal / 5'-3' exonuclease, N-terminal resolvase-like domain / 5'-3' exonuclease / 5'-3' exonuclease / Helix-hairpin-helix motif, class 2 ...Flap endonuclease Xni / Flap endonuclease / 5'-nuclease / DNA polymerase I-like, H3TH domain / 5'-3' exonuclease, C-terminal SAM fold / 5'-3' exonuclease, alpha-helical arch, N-terminal / 5'-3' exonuclease, N-terminal resolvase-like domain / 5'-3' exonuclease / 5'-3' exonuclease / Helix-hairpin-helix motif, class 2 / Helix-hairpin-helix class 2 (Pol1 family) motifs / 5'-3' exonuclease, C-terminal domain superfamily / PIN-like domain superfamily / 5' to 3' exonuclease, C-terminal subdomain / DNA polymerase; domain 1 / Rossmann fold / Orthogonal Bundle / 3-Layer(aba) Sandwich / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
: / PIVALIC ACID / PHOSPHATE ION / DNA / Flap endonuclease Xni
Similarity search - Component
Biological speciesESCHERICHIA COLI (E. coli)
SYNTHETIC CONSTRUCT (others)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.5 Å
AuthorsHemsworth, G.R. / Anstey-Gilbert, C.S. / Flemming, C.S. / Hodskinson, M.R.G. / Zhang, J. / Sedelnikova, S.E. / Stillman, T.J. / Sayers, J.R. / Artymiuk, P.J.
CitationJournal: Nucleic Acids Res. / Year: 2013
Title: The Structure of E. Coli Exoix - Implications for DNA Binding and Catalysis in Flap Endonucleases
Authors: Anstey-Gilbert, C.S. / Hemsworth, G.R. / Flemming, C.S. / Hodskinson, M.R.G. / Zhang, J. / Sedelnikova, S.E. / Stillman, T.J. / Sayers, J.R. / Artymiuk, P.J.
History
DepositionNov 26, 2012Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jul 10, 2013Provider: repository / Type: Initial release
Revision 1.1Jul 17, 2013Group: Database references
Revision 1.2Oct 9, 2013Group: Database references
Revision 1.3Oct 30, 2019Group: Advisory / Data collection ...Advisory / Data collection / Derived calculations / Other
Category: pdbx_database_status / pdbx_struct_conn_angle ...pdbx_database_status / pdbx_struct_conn_angle / pdbx_validate_symm_contact / struct_conn / struct_conn_type
Item: _pdbx_database_status.status_code_sf / _pdbx_struct_conn_angle.ptnr1_auth_asym_id ..._pdbx_database_status.status_code_sf / _pdbx_struct_conn_angle.ptnr1_auth_asym_id / _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.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_asym_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.value
Revision 1.4Dec 20, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / pdbx_struct_conn_angle / struct_conn / 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_asym_id / _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.ptnr3_auth_asym_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.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_asym_id / _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.ptnr2_auth_asym_id / _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_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: PROTEIN XNI
B: 5'-D(*GP*CP*GP*CP)-3'
C: 5'-D(*AP*AP*GP*CP*GP*CP)-3'
hetero molecules


Theoretical massNumber of molelcules
Total (without water)31,4747
Polymers31,2133
Non-polymers2614
Water4,378243
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area1500 Å2
ΔGint-25.4 kcal/mol
Surface area14250 Å2
MethodPISA
Unit cell
Length a, b, c (Å)66.203, 154.820, 34.473
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number18
Space group name H-MP21212

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Components

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Protein , 1 types, 1 molecules A

#1: Protein PROTEIN XNI / EXOIX


Mass: 28203.158 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) ESCHERICHIA COLI (E. coli) / Strain: XL-1 BLUE / Production host: ESCHERICHIA COLI (E. coli) / Strain (production host): BL21(DE3) / Variant (production host): PCI857
References: UniProt: Q8X6R9, Hydrolases; Acting on ester bonds

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DNA chain , 2 types, 2 molecules BC

#2: DNA chain 5'-D(*GP*CP*GP*CP)-3' / FLAP1 FRAGMENT


Mass: 1191.818 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) SYNTHETIC CONSTRUCT (others)
#3: DNA chain 5'-D(*AP*AP*GP*CP*GP*CP)-3' / FLAP1 FRAGMENT


Mass: 1818.231 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) SYNTHETIC CONSTRUCT (others)

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Non-polymers , 5 types, 247 molecules

#4: Chemical ChemComp-K / POTASSIUM ION


Mass: 39.098 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: K
#5: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg
#6: Chemical ChemComp-PIV / PIVALIC ACID


Type: L-peptide linking / Mass: 102.132 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C5H10O2
#7: Chemical ChemComp-PO4 / PHOSPHATE ION


Mass: 94.971 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: PO4
#8: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 243 / Source method: isolated from a natural source / Formula: H2O

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Details

Sequence detailsFRAGMENT OF LARGER DNA BOUND TO PROTEIN. SEQUENCE IS ACTUALLY UNKNOWN, CRYSTAL LIKELY HAS MIXED ...FRAGMENT OF LARGER DNA BOUND TO PROTEIN. SEQUENCE IS ACTUALLY UNKNOWN, CRYSTAL LIKELY HAS MIXED DNAS BOUND HERE.

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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: 2.32 Å3/Da / Density % sol: 47 % / Description: NONE
Crystal growpH: 6
Details: 0.2 M MAGNESIUM ACETATE, 15% (W/V) PEG-3350, pH 6.0

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: Diamond / Beamline: I03 / Wavelength: 0.976
DetectorType: ADSC CCD / Detector: CCD / Date: Dec 16, 2008 / Details: MIRRORS
RadiationMonochromator: DOUBLE CRYSTAL / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.976 Å / Relative weight: 1
ReflectionResolution: 1.5→51.64 Å / Num. obs: 57905 / % possible obs: 99.9 % / Observed criterion σ(I): 6 / Redundancy: 9.9 % / Rmerge(I) obs: 0.1 / Net I/σ(I): 22.5
Reflection shellResolution: 1.5→1.58 Å / Redundancy: 7 % / Rmerge(I) obs: 0.48 / Mean I/σ(I) obs: 3.4 / % possible all: 99.8

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Processing

Software
NameVersionClassification
REFMAC5.5.0070refinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 3ZD9

3zd9


Resolution: 1.5→51.64 Å / Cor.coef. Fo:Fc: 0.954 / Cor.coef. Fo:Fc free: 0.941 / SU B: 1.333 / SU ML: 0.051 / Cross valid method: THROUGHOUT / ESU R: 0.074 / ESU R Free: 0.075 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS.
RfactorNum. reflection% reflectionSelection details
Rfree0.2349 2950 5.1 %RANDOM
Rwork0.21063 ---
obs0.21184 54940 99.93 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: MASK
Displacement parametersBiso mean: 25.205 Å2
Baniso -1Baniso -2Baniso -3
1--0.2 Å20 Å20 Å2
2--0.71 Å20 Å2
3----0.51 Å2
Refinement stepCycle: LAST / Resolution: 1.5→51.64 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1915 206 14 243 2378
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0150.0212199
X-RAY DIFFRACTIONr_bond_other_d0.0010.021407
X-RAY DIFFRACTIONr_angle_refined_deg1.5472.0793028
X-RAY DIFFRACTIONr_angle_other_deg0.93933444
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.415245
X-RAY DIFFRACTIONr_dihedral_angle_2_deg40.61923.90887
X-RAY DIFFRACTIONr_dihedral_angle_3_deg12.43915322
X-RAY DIFFRACTIONr_dihedral_angle_4_deg14.8581513
X-RAY DIFFRACTIONr_chiral_restr0.090.2340
X-RAY DIFFRACTIONr_gen_planes_refined0.0080.0212291
X-RAY DIFFRACTIONr_gen_planes_other0.0010.02403
X-RAY DIFFRACTIONr_nbd_refined
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it16.3311.51232
X-RAY DIFFRACTIONr_mcbond_other5.0011.5494
X-RAY DIFFRACTIONr_mcangle_it14.77421975
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it38.2043967
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it35.4834.51053
X-RAY DIFFRACTIONr_scangle_other
X-RAY DIFFRACTIONr_long_range_B_refined
X-RAY DIFFRACTIONr_long_range_B_other
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 1.5→1.539 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.336 219 -
Rwork0.332 3938 -
obs--99.81 %

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