X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop. Seeds of E65k Mutant Used.
pH 7.2
Temperature 291.0
Details PEG 4000, Ammonium sulphate, Sodium chloride, Tris HCL, pH 7.2, Vapor diffusion, hanging drop. Seeds of E65K mutant used., temperature 291K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 123.44 α = 90
b = 134.55 β = 90
c = 61.39 γ = 90
Symmetry
Space Group P 21 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 -- 2001-03-27
Diffraction Radiation
Monochromator Protocol
Si (111) SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SRS BEAMLINE PX14.2 0.978 SRS PX14.2

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
2.55 33.13 99.8 -- 0.063 -- 4.9 34014 34014 -- 0.0 49.8
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)
2.55 2.68 99.9 -- 0.305 2.4 4.8 4893

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 2.55 33.13 -- 0.0 -- 33984 1686 99.5 -- 0.222 0.222 0.273 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 2.55 2.64 3175 175 3175 0.321 0.373 0.028 99.9
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 46.9
Anisotropic B[1][1] 5.67
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -2.71
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -2.96
RMS Deviations
Key Refinement Restraint Deviation
c_improper_angle_d 1.08
c_dihedral_angle_d 24.1
c_angle_deg 1.6
c_bond_d 0.011
Coordinate Error
Parameter Value
Luzzati ESD (R-Free Set) 0.41
Luzzati Sigma A (R-Free Set) 0.35
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 4097
Nucleic Acid Atoms 0
Heterogen Atoms 15
Solvent Atoms 53

Software

Computing
Computing Package Purpose
MOSFLM Data Reduction (intensity integration)
CCP4 (SCALA) Data Reduction (data scaling)
CNS Structure Solution
CNS 1.0 Structure Refinement
Software
Software Name Purpose
CNS version: 1.0 refinement
CNS model building
SCALA data reduction
MOSFLM data collection