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- PDB-4js5: Crystal structure of E. coli Exonuclease I in complex with a dT13... -

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Basic information

Entry
Database: PDB / ID: 4js5
TitleCrystal structure of E. coli Exonuclease I in complex with a dT13 oligonucleotide
Components
  • Exodeoxyribonuclease I
  • dT13 oligonucleotide
KeywordsHYDROLASE/DNA / DNA repair / exonuclease / processive / DnaQ superfamily / 3'-5' ssDNA exonuclease / HYDROLASE / HYDROLASE-DNA complex
Function / homology
Function and homology information


exodeoxyribonuclease I / single-stranded DNA 3'-5' DNA exonuclease activity / DNA catabolic process / 5'-deoxyribose-5-phosphate lyase activity / single-stranded DNA binding / 3'-5'-RNA exonuclease activity / DNA repair / magnesium ion binding
Similarity search - Function
Helix Hairpins - #1240 / Exonuclease ExoI, domain 3 / Exonuclease ExoI, domain 2 / Exodeoxyribonuclease I, C-terminal / Exodeoxyribonuclease I / Exonuclease I, SH3-like domain / Exonuclease I, C-terminal alpha-helical domain / Exonuclease I, SH3-like domain superfamily / Exonuclease C-terminal / Exonuclease I (ExoI) SH3-like domain profile. ...Helix Hairpins - #1240 / Exonuclease ExoI, domain 3 / Exonuclease ExoI, domain 2 / Exodeoxyribonuclease I, C-terminal / Exodeoxyribonuclease I / Exonuclease I, SH3-like domain / Exonuclease I, C-terminal alpha-helical domain / Exonuclease I, SH3-like domain superfamily / Exonuclease C-terminal / Exonuclease I (ExoI) SH3-like domain profile. / Exonuclease I (ExoI) C-terminal domain profile. / Oligoribonuclease / PX Domain / Exonuclease / Exonuclease, RNase T/DNA polymerase III / EXOIII / Monooxygenase / Ribonuclease H-like superfamily/Ribonuclease H / Helix Hairpins / Nucleotidyltransferase; domain 5 / Ribonuclease H superfamily / Ribonuclease H-like superfamily / Up-down Bundle / 2-Layer Sandwich / Orthogonal Bundle / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
DNA / DNA (> 10) / Exodeoxyribonuclease I
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 3.5 Å
AuthorsBell, C.E.
CitationJournal: Nucleic Acids Res. / Year: 2013
Title: Crystal structures of Escherichia coli exonuclease I in complex with single-stranded DNA provide insights into the mechanism of processive digestion.
Authors: Korada, S.K. / Johns, T.D. / Smith, C.E. / Jones, N.D. / McCabe, K.A. / Bell, C.E.
History
DepositionMar 22, 2013Deposition site: RCSB / Processing site: RCSB
Revision 1.0May 8, 2013Provider: repository / Type: Initial release
Revision 1.1Jun 26, 2013Group: Database references
Revision 1.2Jul 3, 2013Group: Database references
Revision 1.3Sep 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 / 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 / _struct_ref_seq_dif.details / _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
C: dT13 oligonucleotide
D: dT13 oligonucleotide
A: Exodeoxyribonuclease I
B: Exodeoxyribonuclease I
hetero molecules


Theoretical massNumber of molelcules
Total (without water)117,7096
Polymers117,5174
Non-polymers1922
Water0
1
C: dT13 oligonucleotide
A: Exodeoxyribonuclease I
hetero molecules


Theoretical massNumber of molelcules
Total (without water)58,8553
Polymers58,7582
Non-polymers961
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
D: dT13 oligonucleotide
B: Exodeoxyribonuclease I
hetero molecules


Theoretical massNumber of molelcules
Total (without water)58,8553
Polymers58,7582
Non-polymers961
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)158.330, 158.330, 151.050
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number152
Space group name H-MP3121
Noncrystallographic symmetry (NCS)NCS oper:
IDCodeMatrixVector
1given(1), (1), (1)
2given(-0.896567, -0.073484, 0.43677), (-0.00463, -0.984532, -0.175145), (0.442884, -0.159052, 0.882358)64.2766, -72.19192, -21.61465

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Components

#1: DNA chain dT13 oligonucleotide


Mass: 3909.549 Da / Num. of mol.: 2 / Source method: obtained synthetically / Details: chemical synthesis
#2: Protein Exodeoxyribonuclease I / / Exonuclease I / DNA deoxyribophosphodiesterase / dRPase


Mass: 54848.891 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Details: N-terminal 6His-thrombin tab / Source: (gene. exp.) Escherichia coli (E. coli) / Strain: K12 / Gene: sbcB, cpeA, xonA, b2011, JW1993 / Plasmid: pET14b / Production host: Escherichia coli (E. coli) / Strain (production host): BL21(AI) / References: UniProt: P04995, exodeoxyribonuclease I
#3: Chemical ChemComp-SO4 / SULFATE ION / Sulfate


Mass: 96.063 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: SO4

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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: 4.65 Å3/Da / Density % sol: 73.55 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 8
Details: 5% 2-propanol, 25 % glycerol, 1.2 M ammonium sulfate, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 298K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 31-ID / Wavelength: 0.97931 Å
DetectorType: RAYONIX MX225HE / Detector: CCD / Date: Nov 16, 2012
RadiationMonochromator: Kohzu HLD-4 double crystal / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97931 Å / Relative weight: 1
ReflectionResolution: 3.5→49 Å / Num. all: 26653 / Num. obs: 26653 / % possible obs: 99.9 % / Observed criterion σ(F): 1 / Observed criterion σ(I): 1 / Redundancy: 11 % / Rmerge(I) obs: 0.1 / Net I/σ(I): 9.6
Reflection shellResolution: 3.5→3.69 Å / Redundancy: 10.1 % / Rmerge(I) obs: 0.786 / Mean I/σ(I) obs: 2 / % possible all: 100

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Processing

Software
NameVersionClassification
XDSdata scaling
AMoREphasing
REFMAC5.7.0029refinement
MOSFLMdata reduction
SCALAdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1FXX

1fxx


Resolution: 3.5→49 Å / Cor.coef. Fo:Fc: 0.93 / Cor.coef. Fo:Fc free: 0.909 / SU B: 61.309 / SU ML: 0.789 / Cross valid method: THROUGHOUT / σ(F): 1 / σ(I): 1 / ESU R Free: 0.67 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.34642 1409 5 %RANDOM
Rwork0.30614 ---
obs0.30815 26653 99.86 %-
all-2653 --
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 196.357 Å2
Baniso -1Baniso -2Baniso -3
1-1.96 Å21.96 Å20 Å2
2--1.96 Å20 Å2
3----6.34 Å2
Refinement stepCycle: LAST / Resolution: 3.5→49 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms7431 420 10 0 7861
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0050.0198091
X-RAY DIFFRACTIONr_bond_other_d0.0010.027326
X-RAY DIFFRACTIONr_angle_refined_deg0.8491.89711098
X-RAY DIFFRACTIONr_angle_other_deg0.733316784
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.5265924
X-RAY DIFFRACTIONr_dihedral_angle_2_deg34.14223.819398
X-RAY DIFFRACTIONr_dihedral_angle_3_deg14.951151192
X-RAY DIFFRACTIONr_dihedral_angle_4_deg9.4181560
X-RAY DIFFRACTIONr_chiral_restr0.0510.21191
X-RAY DIFFRACTIONr_gen_planes_refined0.0030.0218992
X-RAY DIFFRACTIONr_gen_planes_other0.0010.021916
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_it
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it
X-RAY DIFFRACTIONr_scbond_it
X-RAY DIFFRACTIONr_scangle_it
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 3.5→3.591 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.653 93 -
Rwork0.656 1992 -
obs--100 %

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