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- PDB-4hio: Crystal Structure of Schizosaccharomyces pombe Pot1pC bound to ss... -

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Basic information

Entry
Database: PDB / ID: 4hio
TitleCrystal Structure of Schizosaccharomyces pombe Pot1pC bound to ssDNA (GGTAACGGT)
Components
  • DNA (5'-D(*GP*GP*TP*AP*AP*CP*GP*GP*T)-3')
  • Protection of telomeres protein 1
KeywordsDNA BINDING PROTEIN / specificity / plasticity / promiscuity / OB-fold / ssDNA-binding / single-stranded telomeric DNA
Function / homology
Function and homology information


Removal of the Flap Intermediate from the C-strand / telomere cap complex / chromosome, telomeric repeat region / telomerase inhibitor activity / shelterin complex / regulation of telomere maintenance via telomerase / single-stranded telomeric DNA binding / nuclear telomere cap complex / G-rich strand telomeric DNA binding / telomere capping ...Removal of the Flap Intermediate from the C-strand / telomere cap complex / chromosome, telomeric repeat region / telomerase inhibitor activity / shelterin complex / regulation of telomere maintenance via telomerase / single-stranded telomeric DNA binding / nuclear telomere cap complex / G-rich strand telomeric DNA binding / telomere capping / telomere maintenance / nucleus / cytosol
Similarity search - Function
Protection of telomeres protein 1, ssDNA-binding domain / ssDNA-binding domain of telomere protection protein / Protection of telomeres protein 1 / Telomeric single stranded DNA binding POT1/Cdc13 / Telomeric single stranded DNA binding POT1/CDC13 / Telomeric single stranded DNA binding POT1/CDC13 / Nucleic acid-binding proteins / OB fold (Dihydrolipoamide Acetyltransferase, E2P) / Nucleic acid-binding, OB-fold / Beta Barrel / Mainly Beta
Similarity search - Domain/homology
DNA / Protection of telomeres protein 1
Similarity search - Component
Biological speciesSchizosaccharomyces pombe (fission yeast)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 1.753 Å
AuthorsDickey, T.H. / McKercher, M.A. / Wuttke, D.S.
CitationJournal: Structure / Year: 2013
Title: Nonspecific Recognition Is Achieved in Pot1pC through the Use of Multiple Binding Modes.
Authors: Dickey, T.H. / McKercher, M.A. / Wuttke, D.S.
History
DepositionOct 11, 2012Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 12, 2012Provider: repository / Type: Initial release
Revision 1.1Feb 27, 2013Group: Database references
Revision 1.2Nov 15, 2017Group: Advisory / Refinement description / Category: pdbx_unobs_or_zero_occ_atoms / software
Revision 1.3Sep 20, 2023Group: Advisory / Data collection ...Advisory / Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / pdbx_unobs_or_zero_occ_atoms / struct_ref_seq_dif
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ref_seq_dif.details

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Protection of telomeres protein 1
B: DNA (5'-D(*GP*GP*TP*AP*AP*CP*GP*GP*T)-3')


Theoretical massNumber of molelcules
Total (without water)19,9782
Polymers19,9782
Non-polymers00
Water3,459192
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area2150 Å2
ΔGint-3 kcal/mol
Surface area8430 Å2
MethodPISA
Unit cell
Length a, b, c (Å)41.340, 59.866, 66.282
Angle α, β, γ (deg.)90.000, 90.000, 90.000
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein Protection of telomeres protein 1


Mass: 17182.414 Da / Num. of mol.: 1
Fragment: Pot1pC, partial DNA binding domain, residues 198-339
Mutation: V199D
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Schizosaccharomyces pombe (fission yeast)
Strain: 972h- / Gene: pot1, SPAC26H5.06 / Plasmid: pTXB1 / Production host: Escherichia coli (E. coli) / Strain (production host): BL21 (DE3) / References: UniProt: O13988
#2: DNA chain DNA (5'-D(*GP*GP*TP*AP*AP*CP*GP*GP*T)-3')


Mass: 2795.847 Da / Num. of mol.: 1 / Source method: obtained synthetically / Details: telomeric single-stranded DNA, T4A variant / Source: (synth.) Schizosaccharomyces pombe (fission yeast)
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 192 / 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: 2.05 Å3/Da / Density % sol: 40.08 %
Crystal growTemperature: 290 K / Method: vapor diffusion, hanging drop / pH: 7
Details: 30% PEG 6000, 0.2M sodium formate, pH 7, VAPOR DIFFUSION, HANGING DROP, temperature 290K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RUH2R / Wavelength: 1.54 Å
DetectorType: RIGAKU RAXIS IV++ / Detector: IMAGE PLATE / Date: Jan 4, 2012
RadiationMonochromator: osmic mirrors / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.54 Å / Relative weight: 1
ReflectionResolution: 1.753→50 Å / Num. all: 17039 / Num. obs: 16782 / % possible obs: 98.5 % / Observed criterion σ(F): -3 / Observed criterion σ(I): -3 / Redundancy: 3.3 % / Rmerge(I) obs: 0.057 / Χ2: 1.06 / Net I/σ(I): 12
Reflection shell
Resolution (Å)Redundancy (%)Rmerge(I) obsNum. unique allΧ2Diffraction-ID% possible all
1.76-1.8230.36616100.66195.7
1.82-1.93.30.25516290.721197.9
1.9-1.983.30.17516270.762198.2
1.98-2.093.30.11816470.821198.2
2.09-2.223.30.10216560.903198.5
2.22-2.393.30.08816691.007199.2
2.39-2.633.30.0716851.098199.2
2.63-3.013.40.05317111.238199.7
3.01-3.793.30.03617311.48199.6
3.79-503.20.03418171.759198.8

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Processing

Software
NameVersionClassificationNB
DENZOdata reduction
SCALEPACKdata scaling
PHENIX1.7_650refinement
PDB_EXTRACT3.11data extraction
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling
PHENIX1.7_650phasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 4HIK
Resolution: 1.753→30.264 Å / Occupancy max: 1 / Occupancy min: 0 / SU ML: 0.15 / σ(F): 0 / Phase error: 21.34 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.236 1641 9.99 %random
Rwork0.2146 ---
all0.2169 16745 --
obs0.2169 16430 96.13 %-
Solvent computationShrinkage radii: 0.04 Å / VDW probe radii: 0.4 Å / Solvent model: FLAT BULK SOLVENT MODEL / Bsol: 57.009 Å2 / ksol: 0.429 e/Å3
Displacement parametersBiso max: 61.44 Å2 / Biso mean: 21.5903 Å2 / Biso min: 9.93 Å2
Baniso -1Baniso -2Baniso -3
1-1.4752 Å2-0 Å2-0 Å2
2---2.0784 Å20 Å2
3----2.0728 Å2
Refinement stepCycle: LAST / Resolution: 1.753→30.264 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1177 186 0 192 1555
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.0091419
X-RAY DIFFRACTIONf_angle_d0.8771956
X-RAY DIFFRACTIONf_chiral_restr0.061202
X-RAY DIFFRACTIONf_plane_restr0.005216
X-RAY DIFFRACTIONf_dihedral_angle_d18.754536
LS refinement shell

Refine-ID: X-RAY DIFFRACTION / Total num. of bins used: 12

Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkNum. reflection all% reflection obs (%)
1.7534-1.8050.31751100.32211021113181
1.805-1.86320.27081300.26921181131192
1.8632-1.92980.26741330.24281187132095
1.9298-2.00710.25671360.22431206134296
2.0071-2.09840.22911360.21481224136097
2.0984-2.2090.27061370.22591246138397
2.209-2.34730.24831380.22191245138398
2.3473-2.52850.22211390.22041250138998
2.5285-2.78280.24741420.2221273141599
2.7828-3.18510.21821430.22641293143699
3.1851-4.01140.20491440.178812901434100
4.0114-30.26890.23471530.19811373152699

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