X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 7
Temperature 18.0
Details Protein: 10mM Sodium Acetate pH 4.4, 2mM Magnesium chloride, 100mM sodium chloride, 5mM Dithiothreitol Well: 2.5M Sodium chloride, 0.1M Tris pH 7.0, 0.2M Magnesium chloride, VAPOR DIFFUSION, HANGING DROP, temperature 18K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 76.26 α = 90
b = 76.16 β = 93.32
c = 85.69 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
2 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD BRANDEIS -- 1999-07-27
CCD ADSC QUANTUM 4 -- 1999-05-30
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON ALS BEAMLINE 5.0.2 -- ALS 5.0.2
SYNCHROTRON NSLS BEAMLINE X12C -- NSLS X12C

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
1.8 20 96.4 0.76 -- -- 3.6 87902 314385 -- -3.0 33.8
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)
1.8 1.83 68.6 0.461 -- -- 4.5 3103

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 1.8 50.0 -- 0.0 90806 85222 4301 93.9 0.197 0.197 0.196 0.219 Random
RMS Deviations
Key Refinement Restraint Deviation
c_angle_deg 1.3
c_bond_d 0.007
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 5593
Nucleic Acid Atoms 0
Heterogen Atoms 79
Solvent Atoms 469

Software

Software
Software Name Purpose
SHARP phasing
CNS refinement version: 0.9
DENZO data reduction
SCALEPACK data scaling