X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 6.5
Temperature 295.0
Details sodium acetate, cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 295.0K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 124.39 α = 90
b = 124.39 β = 90
c = 67.4 γ = 90
Symmetry
Space Group I 4 2 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 95
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 -- 2000-07-19
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X26C -- NSLS X26C

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
1.75 50 99.6 0.084 -- -- 4.8 26350 26350 0.0 0.0 27.5
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)
1.75 1.83 100.0 0.441 -- -- 4.4 2895

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
-- 1.75 20.0 0.0 0.0 25861 24531 1330 96.2 0.1856 0.1856 0.1834 0.226 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 22.9
Anisotropic B[1][1] -0.3
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -0.3
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 0.6
RMS Deviations
Key Refinement Restraint Deviation
p_angle_d 2.24
p_bond_d 0.022
p_mcangle_it 3.695
p_scbond_it 5.321
p_planar_d 0.009
p_chiral_restr 0.123
p_mcbond_it 2.305
p_scangle_it 8.12
p_angle_deg 2.24
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1446
Nucleic Acid Atoms 0
Heterogen Atoms 38
Solvent Atoms 168

Software

Software
Software Name Purpose
SHARP phasing
REFMAC refinement
DENZO data reduction
SCALEPACK data scaling