X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.5
Details 0.5 UL DROPS OF PROTEIN-INHIBITOR SOLUTION (12.2 MG/ML IN 20 MM TRIS-HCL PH 8.0, 200 MM NACL) WERE MIXED WITH AN EQUAL VOLUME OF PRECIPITANT SOLUTION (25% PEG MONOMETHYLETHER-550 (V/V), 0.10 M MES PH 6.5, 10 MM ZNSO(4), 12 MM ZNCL(2)) AND INCUBATED AT ROOM TEMPERATURE OVER A RESERVOIR OF 24% W/V PEG-3350, 12.8% V/V PEG MME-550, 50 MM MES PH 6.5, 5 MM ZNSO(4), AND 6 MM ZNCL(2).

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 48.87 α = 90
b = 75.08 β = 90
c = 80.26 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD MARRESEARCH NON-FOCUSING 2000-03-06
Diffraction Radiation
Monochromator Protocol
SILICON SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON APS BEAMLINE 17-ID -- APS 17-ID

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 19.9 96.6 0.032 -- -- 8.2 -- 19956 -- 0.0 41.6
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 88.8 0.32 -- -- 3.67 --

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 2.0 19.9 -- -- -- 19942 2027 96.6 -- -- 0.2391 0.296 RANDOM
High Resolution Shell
Refinement method Shell Resolution (High) Shell Resolution (Low) # of Reflections (Observed) # of Reflections (R-Free) # of Reflections (R-Work) R-Factor (R-Work) R-Factor (R-Free) R-Factor (R-Free Error) Percent Reflections (Observed)
X Ray Diffraction 1.998 2.092 -- -- 2340 0.33 -- -- 89.8
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 42.9
RMS Deviations
Key Refinement Restraint Deviation
o_angle_deg 0.025
o_bond_d 0.007
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.2793
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1815
Nucleic Acid Atoms 0
Heterogen Atoms 93
Solvent Atoms 58

Software

Software
Software Name Purpose
HKL-2000 data collection
SCALEPACK data scaling
CNX refinement
HKL-2000 data reduction
CNX phasing