X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 6.5
Temperature 277.0
Details PEG 2000, MPD, ammonium sulfate, MES pH 6.5, magnesium acetate, DTT, spermidine, and lithium chloride. VAPOR DIFFUSION, HANGING DROP at 277K, temperature 277.0K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 53.31 α = 90
b = 68.72 β = 90
c = 89.72 γ = 90
Symmetry
Space Group C 2 2 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD BRANDEIS - B4 -- 1999-03-23
CCD ADSC QUANTUM 4 -- 1999-01-06
Diffraction Radiation
Monochromator Protocol
Si 111 SINGLE WAVELENGTH
Si 111 MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X25 0.97946, 0.97927, 0.92011, 0.91970 NSLS X25
SYNCHROTRON CHESS BEAMLINE F1 0.9100 CHESS F1

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 25 91.5 0.089 0.089 -- 8.3 11494 10517 -- -3.0 --
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)
2.0 2.07 79.5 0.123 0.123 9.6 5.0 1148

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 2.0 25.0 0.0 0.0 11474 10402 1055 90.7 0.226 0.226 0.203 0.25 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Anisotropic B[1][1] 6.943
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -13.236
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 6.293
RMS Deviations
Key Refinement Restraint Deviation
c_mcbond_it 1.27
c_scbond_it 1.94
c_angle_deg 1.3
c_scangle_it 2.95
c_mcangle_it 1.89
c_bond_d 0.007
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1312
Nucleic Acid Atoms 0
Heterogen Atoms 129
Solvent Atoms 167

Software

Software
Software Name Purpose
SnB phasing
MLPHARE phasing
DM model building
CNS refinement version: 1.0
MARMAD data reduction
DENZO data reduction
SCALEPACK data scaling
DM phasing