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- PDB-4q48: Structure of the RecQ Catalytic Core from Deinococcus radiodurans -

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Basic information

Entry
Database: PDB / ID: 4q48
TitleStructure of the RecQ Catalytic Core from Deinococcus radiodurans
ComponentsDNA helicase RecQ
KeywordsDNA BINDING PROTEIN / DNA unwinding / helicase
Function / homology
Function and homology information


bacterial nucleoid / four-way junction helicase activity / replisome / SOS response / 3'-5' DNA helicase activity / DNA duplex unwinding / chromosome / DNA recombination / DNA helicase / DNA replication ...bacterial nucleoid / four-way junction helicase activity / replisome / SOS response / 3'-5' DNA helicase activity / DNA duplex unwinding / chromosome / DNA recombination / DNA helicase / DNA replication / nucleic acid binding / hydrolase activity / DNA repair / ATP binding / metal ion binding / cytoplasm
Similarity search - Function
DNA helicase, ATP-dependent, RecQ type, bacterial / RQC domain / RQC / RQC domain / ATP-dependent DNA helicase RecQ, zinc-binding domain / RecQ zinc-binding / DNA helicase, ATP-dependent, RecQ type / Helicase and RNase D C-terminal / HRDC domain / HRDC domain ...DNA helicase, ATP-dependent, RecQ type, bacterial / RQC domain / RQC / RQC domain / ATP-dependent DNA helicase RecQ, zinc-binding domain / RecQ zinc-binding / DNA helicase, ATP-dependent, RecQ type / Helicase and RNase D C-terminal / HRDC domain / HRDC domain / HRDC domain profile. / HRDC domain superfamily / HRDC-like superfamily / DEAD/DEAH box helicase / DEAD/DEAH box helicase domain / Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain / Helicase conserved C-terminal domain / helicase superfamily c-terminal domain / Superfamilies 1 and 2 helicase C-terminal domain profile. / Superfamilies 1 and 2 helicase ATP-binding type-1 domain profile. / DEAD-like helicases superfamily / Helicase, C-terminal / Helicase superfamily 1/2, ATP-binding domain / Arc Repressor Mutant, subunit A / P-loop containing nucleotide triphosphate hydrolases / Winged helix-like DNA-binding domain superfamily / P-loop containing nucleoside triphosphate hydrolase / Rossmann fold / Orthogonal Bundle / 3-Layer(aba) Sandwich / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
Biological speciesDeinococcus radiodurans (radioresistant)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.797 Å
AuthorsChen, S.C. / Yang, C.S. / Chen, Y.
CitationJournal: Biomed Res Int / Year: 2014
Title: Crystal structure of Deinococcus radiodurans RecQ helicase catalytic core domain: the interdomain flexibility.
Authors: Chen, S.C. / Huang, C.H. / Yang, C.S. / Way, T.D. / Chang, M.C. / Chen, Y.
History
DepositionApr 14, 2014Deposition site: RCSB / Processing site: PDBJ
Revision 1.0May 20, 2015Provider: repository / Type: Initial release
Revision 1.1Nov 8, 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_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_seq_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_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_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_label_asym_id / _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
A: DNA helicase RecQ
B: DNA helicase RecQ
hetero molecules


Theoretical massNumber of molelcules
Total (without water)116,9504
Polymers116,8192
Non-polymers1312
Water0
1
A: DNA helicase RecQ
hetero molecules


Theoretical massNumber of molelcules
Total (without water)58,4752
Polymers58,4101
Non-polymers651
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
B: DNA helicase RecQ
hetero molecules


Theoretical massNumber of molelcules
Total (without water)58,4752
Polymers58,4101
Non-polymers651
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)85.791, 98.528, 152.880
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein DNA helicase RecQ


Mass: 58409.527 Da / Num. of mol.: 2 / Fragment: UNP RESIDUES 1-517
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Deinococcus radiodurans (radioresistant)
Strain: ATCC 13939 / DSM 20539 / JCM 16871 / LMG 4051 / NBRC 15346 / NCIMB 9279 / R1 / VKM B-1422
Gene: DR_1289 / Production host: Escherichia coli (E. coli) / References: UniProt: Q9RUU2
#2: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Zn

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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: 2.77 Å3/Da / Density % sol: 55.52 %
Crystal growTemperature: 277 K / Method: vapor diffusion, sitting drop / pH: 7.7
Details: 0.1M HEPES (pH 7.7), 14% PEG 8K, 8% ethylene glycol, VAPOR DIFFUSION, SITTING DROP, temperature 277K

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Data collection

DiffractionMean temperature: 200 K
Diffraction sourceSource: SYNCHROTRON / Site: NSRRC / Beamline: BL13C1 / Wavelength: 0.9762 Å
DetectorType: ADSC QUANTUM 315r / Detector: CCD / Date: Oct 30, 2012
RadiationMonochromator: Si 111 CHANNEL / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9762 Å / Relative weight: 1
ReflectionResolution: 2.797→30 Å / Num. all: 32721 / Num. obs: 31511 / % possible obs: 96.3 % / Observed criterion σ(F): 1 / Observed criterion σ(I): 1
Reflection shellResolution: 2.8→2.9 Å / Redundancy: 2.9 % / Rmerge(I) obs: 0.543 / % possible all: 96.6

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Processing

Software
NameVersionClassification
HKL-2000data collection
PHASERphasing
PHENIX(phenix.refine: 1.8.4_1496)refinement
HKL-2000data reduction
HKL-2000data scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 1OYW

1oyw


Resolution: 2.797→27.312 Å / SU ML: 0.42 / σ(F): 1.34 / Phase error: 29.61 / Stereochemistry target values: ML
RfactorNum. reflection% reflectionSelection details
Rfree0.2857 2000 6.35 %RANDOM
Rwork0.2135 ---
all0.218 32721 --
obs0.218 31478 96.25 %-
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Refinement stepCycle: LAST / Resolution: 2.797→27.312 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms7839 0 2 0 7841
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.0118019
X-RAY DIFFRACTIONf_angle_d1.57710838
X-RAY DIFFRACTIONf_dihedral_angle_d15.3752998
X-RAY DIFFRACTIONf_chiral_restr0.0641220
X-RAY DIFFRACTIONf_plane_restr0.0071425
LS refinement shell

Refine-ID: X-RAY DIFFRACTION / Total num. of bins used: 14

Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection Rwork% reflection obs (%)
2.7966-2.86640.39511380.2993204394
2.8664-2.94380.37671410.2832207397
2.9438-3.03040.39181400.2579207496
3.0304-3.1280.32211410.2502207396
3.128-3.23970.30681420.2476208596
3.2397-3.36920.29841420.2514208396
3.3692-3.52220.31311420.2375211097
3.5222-3.70750.28731440.218211498
3.7075-3.93910.29811440.2184211997
3.9391-4.24220.28661420.2034210897
4.2422-4.66720.22611450.1741212797
4.6672-5.33820.25181440.1955211896
5.3382-6.70910.28461460.2251214796
6.7091-27.31330.25661490.1725220494

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