X-RAY DIFFRACTION Experimental Data & Validation

X-ray Experimental Help


Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 6.8
Temperature 298.0
Details Drops contained 2 microlitres of protein solution (10mg/ml in 20mM KCL, 40mM HEPES pH 7.5) supplemented with 2mM DTT and 0.3 mM ZnCl2 and 2 microlitres of precipitant (1.5 M ammonium sulfate, 10% dioxane, 0.1 M MES pH 6.8) and were equilibrated against 1ml of the same precipitant., VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 77.18 α = 90
b = 77.18 β = 90
c = 199.21 γ = 120
Space Group P 65 2 2


Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 Bent conical Si-mirror (Rh coating) 2000-03-31
Diffraction Radiation
Monochromator Protocol
Bent cylindrical Ge(111) monochromator MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline

Data Collection

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
2.2 30 99.7 0.048 -- -- 23.9 18629 18629 0.0 0.0 32.2
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)
2.2 2.28 99.9 0.323 -- 14.0 6.9 1968


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 2.2 30.0 0.0 0.0 33455 33455 1671 99.3 -- -- 0.2295 0.2567 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 39.9
RMS Deviations
Key Refinement Restraint Deviation
c_scangle_it 5.8
c_scbond_it 4.1
c_mcangle_it 4.3
c_mcbond_it 2.8
c_improper_angle_d 1.2
c_dihedral_angle_d 24.2
c_angle_deg 1.9
c_bond_d 0.015
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.31
Luzzati Sigma A (Observed) 0.34
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.35
Luzzati Sigma A (R-Free Set) 0.32
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1789
Nucleic Acid Atoms 0
Heterogen Atoms 33
Solvent Atoms 144


Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
SOLVE Structure Solution
CNS 0.9 Structure Refinement
Software Name Purpose
CNS version: 0.9 refinement
SOLVE model building