X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Capillary Crystallization
pH 7.5
Temperature 298.0
Details 10% PEG 8000, 0.1 M Tris buffer, 0.4 M calcium chloride, 5% 2-methyl-2,4-pentanediol, pH 7.5, capillary crystallization, temperature 298.0K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 92.6 α = 90
b = 200.1 β = 111.5
c = 116.8 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD BRANDEIS - B4 condensing mirror 2000-07-30
Diffraction Radiation
Monochromator Protocol
two crystal non-dispersive monochromator SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X25 1.3 NSLS X25

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
2.8 100 94.0 -- 0.086 -- 2.5 -- 90759 -1.0 -1.0 63.5
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)
2.8 2.9 80.8 -- 0.356 1.6 2.1 7792

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
MAD 2.8 100.0 -- 2.0 90727 74708 3716 76.9 0.276 0.259 0.257 0.287 Random
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 47.6
RMS Deviations
Key Refinement Restraint Deviation
c_bond_d 0.008
c_dihedral_angle_d 22.1
c_angle_deg 1.33
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 26766
Nucleic Acid Atoms 0
Heterogen Atoms 132
Solvent Atoms 0

Software

Software
Software Name Purpose
SOLVE phasing
SHARP phasing
DM model building
CNS refinement version: 1.0
DENZO data reduction
SCALEPACK data scaling
DM phasing