X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.3
Details 100MM HEPES PH7.3, 13% PEG 20000, 2MM MNCL2, 2% EG, 0.036MG PROTEIN INCUBATED WITH 0.006MM 7NT RNA, pH 7.30

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 105.06 α = 90
b = 93.51 β = 101.19
c = 140.71 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 150
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC CCD MIRRORS 2002-01-15
Diffraction Radiation
Monochromator Protocol
SI 111 SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SRS BEAMLINE PX14.2 -- SRS PX14.2

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
1.9 20 99.7 0.085 -- -- 8.0 -- 209435 -- 1.2 26.6
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)
1.9 1.97 99.8 -- -- 1.2 -- --

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 1.9 18.74 -- 0.0 -- 209435 10430 99.6 -- 0.242 0.242 0.271 RANDOM
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 1.9 2.02 -- 1740 32929 0.339 0.359 0.009 99.7
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 34.0
Anisotropic B[1][1] -1.88
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] -4.16
Anisotropic B[2][2] 10.87
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -8.99
RMS Deviations
Key Refinement Restraint Deviation
c_angle_deg 1.6
c_scbond_it 4.0
c_bond_d 0.012
c_improper_angle_d 1.04
c_dihedral_angle_d 22.8
c_mcbond_it 2.53
c_mcangle_it 3.25
c_scangle_it 5.31
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.28
Luzzati Sigma A (Observed) 0.31
Luzzati Resolution Cutoff (Low) 20.0
Luzzati ESD (R-Free Set) 0.32
Luzzati Sigma A (R-Free Set) 0.34
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 15795
Nucleic Acid Atoms 231
Heterogen Atoms 3
Solvent Atoms 604

Software

Software
Software Name Purpose
CNS refinement version: 1.1
DENZO data reduction
SCALEPACK data scaling
CNS phasing