3UR3

Structure of the Cmr2 subunit of the CRISPR RNA silencing complex


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7.4303.150.2M CaCl2, 28% PEG 400, 0.1M HEPES Sodium, pH 7.4, VAPOR DIFFUSION, HANGING DROP, temperature 303.15K
Crystal Properties
Matthews coefficientSolvent content
2.5451.65

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 70.635α = 90
b = 80.211β = 90
c = 143.934γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray93CCDMARMOSAIC 300 mm CCD2010-07-03MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 22-ID0.97921APS22-ID

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
12.45090.7292992929955
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.42.4465.7

Refinement

Statistics
Diffraction IDStructure Solution MethodResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTION2.40542.68127304187183.890.22220.21830.2734
Temperature Factor Modeling
Anisotropic B[1][1]Anisotropic B[1][2]Anisotropic B[1][3]Anisotropic B[2][2]Anisotropic B[2][3]Anisotropic B[3][3]
27.2315-17.1746-10.0569
RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d18.862
f_angle_d1.068
f_chiral_restr0.071
f_bond_d0.013
f_plane_restr0.004
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4470
Nucleic Acid Atoms
Solvent Atoms29
Heterogen Atoms3

Software

Software
Software NamePurpose
HKL-2000data collection
PHENIXmodel building
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing