X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 5.4
Details PROTEIN WAS CRYSTALLIZED BY VAPOR DIFFUSION IN HANGING DROPS AT 291 K. SOLUTION CONTAINING 10MG/ML PROTEIN, 10 MM TRIS/HCL (PH 7.4) AND 150 MM NACL WAS MIXED WITH SAME VOLUME OF RESERVOIR SOLUTION, CONTAINING 100 MM NA-ACETATE (PH 5.0 - 5.4) AND 10 - 13 % PEG 6000

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 131.4 α = 90
b = 131.4 β = 90
c = 192 γ = 90
Symmetry
Space Group I 4 2 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 277
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH BENT CRYSTAL 1998-12-15
Diffraction Radiation
Monochromator Protocol
GE SINGLE CRYSTAL SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON EMBL/DESY, HAMBURG BEAMLINE X11 -- EMBL/DESY, Hamburg X11

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
2.5 30 99.2 -- 0.083 -- 5.4 -- 29188 -- -- 43.4
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)
2.5 2.6 99.3 -- 0.36 2.8 4.7 --

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
MOLECULAR REPLACEMENT 2.5 30.0 -- 0.0 -- 33144 1476 99.2 -- 0.187 0.185 0.25 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 39.6
RMS Deviations
Key Refinement Restraint Deviation
p_bond_d 0.02
p_planar_d 0.099
p_hb_or_metal_coord 0.05
p_angle_d 0.053
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3555
Nucleic Acid Atoms 0
Heterogen Atoms 29
Solvent Atoms 170

Software

Software
Software Name Purpose
REFMAC refinement
DENZO data reduction
SCALEPACK data scaling