X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.5
Details THE DROPLE CONSISTED ON 25 MGR/ML (FINAL CONCENTRATION) PROTEIN MIXED WITH THE RESERVOIR WHICH CONTAINED 2.4 M AMMONIUM SULFATE, 100 MM PIPES BUFFER (PH 6.5) , IN THE PRESENCE (UP TO 5 MM) OR ABSENCE OF DTT REDUCING AGENT. CRYSTALS WERE STABILIZED IN 40% (V/V) PEG400, 100 MM PIPES 16 MM NARINGENIN PRIOR TO FREEZING AT 105 K, pH 6.50

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 97.92 α = 90
b = 97.92 β = 90
c = 65.19 γ = 120
Symmetry
Space Group P 32 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 105
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MAC Science DIP-2000 -- 1998-06
Diffraction Radiation
Monochromator Protocol
NI FILTER SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE MACSCIENCE SRA -- -- --

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
1.84 51.68 86.6 -- 0.041 -- 2.8 -- 26948 -- -- --
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)
1.84 1.89 8.3 -- 0.011 7.5 0.1 --

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
OTHER 1.84 84.5 -- 0.0 -- 26948 1347 85.5 -- -- 0.161 0.225 RANDOM
RMS Deviations
Key Refinement Restraint Deviation
p_bond_d 0.013
p_angle_d 2.419
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2980
Nucleic Acid Atoms 0
Heterogen Atoms 20
Solvent Atoms 360

Software

Software
Software Name Purpose
CCP4 model building version: (REFMAC+ARPP)
REFMAC refinement
DENZO data reduction
SCALEPACK data scaling
CCP4 phasing version: (ARPP)