X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 6.8
Temperature 16.0
Details 12 % PEG 6000, 0.2 M Mg Acetate, 0.1 M Na Cacodylate, pH 6.8, VAPOR DIFFUSION, HANGING DROP, temperature 16K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 184.32 α = 90
b = 31.23 β = 103.2
c = 80.66 γ = 90
Symmetry
Space Group C 1 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 93
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 -- 1998-02-06
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X12B -- NSLS X12B

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
1.7 100 94.2 0.048 -- -- 2.3 47198 47198 -3.0 -3.0 24.0
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)
1.7 1.76 67.0 0.201 -- -- 1.3 3300

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
-- 1.7 50.0 0.0 0.0 50128 47197 4755 94.2 -- -- 0.198 0.25 random selection of 10 percent of all data
RMS Deviations
Key Refinement Restraint Deviation
c_angle_deg 2.0
c_bond_d 0.017
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3521
Nucleic Acid Atoms 0
Heterogen Atoms 97
Solvent Atoms 387

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
X-PLOR Structure Solution
CNS Structure Refinement
Software
Software Name Purpose
CNS refinement
X-PLOR model building
SCALEPACK data reduction
DENZO data collection