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- PDB-6o70: Crystal structure of Csm6 H132A mutant in complex with cA4 by coc... -

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Basic information

Entry
Database: PDB / ID: 6o70
TitleCrystal structure of Csm6 H132A mutant in complex with cA4 by cocrystallization of cA4 and Csm6 H132A mutant
ComponentsCsm6
KeywordsIMMUNE SYSTEM / Type III-A CRISPR-Cas system / Csm6 H132A mutant in complex with cA4
Function / homologyCRISPR system endoribonuclease Csx1 / CRISPR-associated protein DxTHG, conserved site / : / CRISPR system endoribonuclease Csx1, CARF domain / : / 2',3'- cyclic AMP / Chem-LQJ / CRISPR system endoribonuclease Csx1 CARF domain-containing protein
Function and homology information
Biological speciesThermococcus onnurineus (archaea)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.3 Å
AuthorsJia, N. / Patel, D.J.
CitationJournal: Mol.Cell / Year: 2019
Title: CRISPR-Cas III-A Csm6 CARF Domain Is a Ring Nuclease Triggering Stepwise cA4Cleavage with ApA>p Formation Terminating RNase Activity.
Authors: Jia, N. / Jones, R. / Yang, G. / Ouerfelli, O. / Patel, D.J.
History
DepositionMar 7, 2019Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 31, 2019Provider: repository / Type: Initial release
Revision 1.1Sep 18, 2019Group: Data collection / Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last
Revision 1.2Oct 11, 2023Group: 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
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Csm6
B: Csm6
hetero molecules


Theoretical massNumber of molelcules
Total (without water)101,4316
Polymers99,4562
Non-polymers1,9754
Water81145
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area6650 Å2
ΔGint-26 kcal/mol
Surface area35140 Å2
MethodPISA
Unit cell
Length a, b, c (Å)103.119, 163.779, 110.710
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number20
Space group name H-MC2221

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Components

#1: Protein Csm6


Mass: 49728.047 Da / Num. of mol.: 2 / Mutation: H132A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Thermococcus onnurineus (strain NA1) (archaea)
Strain: NA1 / Gene: TON_0898 / Production host: Escherichia coli (E. coli) / References: UniProt: B6YWC3
#2: Chemical ChemComp-ACK / 2',3'- cyclic AMP


Mass: 329.206 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Formula: C10H12N5O6P
#3: Chemical ChemComp-LQJ / 3'-O-[(R)-{[(2S,3aS,4S,6S,6aS)-6-(6-amino-9H-purin-9-yl)-2-hydroxy-2-oxotetrahydro-2H-2lambda~5~-furo[3,4-d][1,3,2]dioxaphosphol-4-yl]methoxy}(hydroxy)phosphoryl]adenosine


Mass: 658.412 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C20H24N10O12P2
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 45 / 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: 2.4 Å3/Da / Density % sol: 48.66 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 6.2
Details: 10% PEG 8K, 0.2 M NaCl, 0.1 M Na/K phosphate pH 6.2

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 24-ID-C / Wavelength: 0.9791 Å
DetectorType: DECTRIS PILATUS 6M / Detector: PIXEL / Date: Dec 12, 2018
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9791 Å / Relative weight: 1
ReflectionResolution: 2.3→50 Å / Num. obs: 41482 / % possible obs: 99.9 % / Redundancy: 11.8 % / Rpim(I) all: 0.061 / Net I/σ(I): 13.4
Reflection shellResolution: 2.3→2.38 Å / Num. unique obs: 4063

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Processing

Software
NameVersionClassification
REFMAC5.8.0238refinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 6O6S

6o6s


Resolution: 2.3→48.3 Å / Cor.coef. Fo:Fc: 0.953 / Cor.coef. Fo:Fc free: 0.927 / SU B: 10.715 / SU ML: 0.242 / Cross valid method: THROUGHOUT / ESU R: 0.441 / ESU R Free: 0.271 / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.26158 3978 9.6 %RANDOM
Rwork0.2118 ---
obs0.21647 37482 99.34 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å
Displacement parametersBiso mean: 57.456 Å2
Baniso -1Baniso -2Baniso -3
1-3.49 Å20 Å20 Å2
2---3.33 Å20 Å2
3----0.16 Å2
Refinement stepCycle: 1 / Resolution: 2.3→48.3 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6880 0 132 45 7057
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0050.0137179
X-RAY DIFFRACTIONr_bond_other_d0.0020.0176846
X-RAY DIFFRACTIONr_angle_refined_deg1.3011.6819747
X-RAY DIFFRACTIONr_angle_other_deg1.091.59415830
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.6765863
X-RAY DIFFRACTIONr_dihedral_angle_2_deg29.58920.986365
X-RAY DIFFRACTIONr_dihedral_angle_3_deg15.52151251
X-RAY DIFFRACTIONr_dihedral_angle_4_deg16.3351558
X-RAY DIFFRACTIONr_chiral_restr0.0490.2929
X-RAY DIFFRACTIONr_gen_planes_refined0.0050.027841
X-RAY DIFFRACTIONr_gen_planes_other0.0050.021563
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_it2.5195.8473458
X-RAY DIFFRACTIONr_mcbond_other2.5195.8463457
X-RAY DIFFRACTIONr_mcangle_it4.0618.7694319
X-RAY DIFFRACTIONr_mcangle_other4.068.774320
X-RAY DIFFRACTIONr_scbond_it2.8036.4273721
X-RAY DIFFRACTIONr_scbond_other2.8036.4293722
X-RAY DIFFRACTIONr_scangle_it
X-RAY DIFFRACTIONr_scangle_other4.759.4755429
X-RAY DIFFRACTIONr_long_range_B_refined7.23866.7477653
X-RAY DIFFRACTIONr_long_range_B_other7.23866.757653
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 2.304→2.363 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.356 271 -
Rwork0.33 2503 -
obs--92.04 %

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