X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
Temperature 291.0
Details 0.1 M HEPES pH 7.0, 0-0.1 M KCl, and 8-14 percent (w/v) PEG 8000. The crystal used in this study grew in the presence of an 11-nt ssDNA containing a 5-CTT-3 PAM and nine nucleotides complementary to the crRNA-guide sequence in a 2:1 oligonucleotide:protein ratio. However, the target DNA is not observed in the electron

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 105.99 α = 90
b = 244.8 β = 90
c = 426.74 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 80
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MAR scanner 300 mm plate -- 2014-03-22
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON APS BEAMLINE 23-ID-B 1.0 APS 23-ID-B

Data Collection

Overall
Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) R Sym I (Observed) Net I Over Average Sigma (I) Redundancy Number Reflections (All) Number Reflections (Observed) Observed Criterion Sigma (F) Observed Criterion Sigma (I) B (Isotropic) From Wilson Plot
3.2 49.74 100.0 -- -- -- 7.3 -- 183649 -- 2.0 --
High Resolution Shell
Resolution (High) Resolution (Low) Percent Possible (All) R Merge I (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All)
3.2 3.25 100.0 -- -- 2.0 6.9 --

Refinement

Statistics
Structure Solution Method Refinement High Resolution Refinement Low Resolution Cut-off Sigma (I) Cut-off Sigma (F) Number of Reflections (All) Number of Reflections (Observed) Number of Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work R-Free R-Free Selection Details
MOLECULAR REPLACEMENT 3.2 49.735 -- 1.33 -- 183492 2000 99.98 -- 0.2127 0.2122 0.2496 --
High Resolution Shell
Refinement method Shell Resolution (High) Shell Resolution (Low) # of Reflections (Observed) # of Reflections (R-Free) # of Reflections (R-Work) R-Factor (R-Work) R-Factor (R-Free) R-Factor (R-Free Error) Percent Reflections (Observed)
X Ray Diffraction 3.2 3.28 -- 141 12803 0.3033 0.3269 -- 100.0
X Ray Diffraction 3.28 3.3687 -- 142 12843 0.282 0.3306 -- 100.0
X Ray Diffraction 3.3687 3.4678 -- 141 12818 0.2701 0.2923 -- 100.0
X Ray Diffraction 3.4678 3.5797 -- 141 12835 0.2554 0.3351 -- 100.0
X Ray Diffraction 3.5797 3.7076 -- 142 12873 0.2364 0.2827 -- 100.0
X Ray Diffraction 3.7076 3.856 -- 142 12883 0.2304 0.2861 -- 100.0
X Ray Diffraction 3.856 4.0314 -- 141 12868 0.2152 0.3016 -- 100.0
X Ray Diffraction 4.0314 4.2438 -- 143 12943 0.1984 0.2299 -- 100.0
X Ray Diffraction 4.2438 4.5096 -- 143 12895 0.1849 0.2213 -- 100.0
X Ray Diffraction 4.5096 4.8575 -- 142 12953 0.1734 0.2274 -- 100.0
X Ray Diffraction 4.8575 5.3458 -- 143 13004 0.1802 0.1972 -- 100.0
X Ray Diffraction 5.3458 6.1181 -- 144 13056 0.2036 0.2323 -- 100.0
X Ray Diffraction 6.1181 7.7036 -- 146 13152 0.2128 0.2259 -- 100.0
X Ray Diffraction 7.7036 49.741 -- 149 13566 0.1752 0.194 -- 100.0
RMS Deviations
Key Refinement Restraint Deviation
f_plane_restr 0.003
f_chiral_restr 0.034
f_angle_d 0.74
f_bond_d 0.004
f_dihedral_angle_d 11.459
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 50706
Nucleic Acid Atoms 2600
Heterogen Atoms 2
Solvent Atoms 0

Software

Software
Software Name Purpose
PHENIX refinement version: (1.10pre_2089: ???)
XDS data reduction
Aimless data scaling
PHASER phasing