X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Sitting Drop
pH 8.3
Temperature 20.0
Details tris, ammonium sulfate, pH 8.3, VAPOR DIFFUSION, SITTING DROP, temperature 20K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 58.77 α = 90
b = 58.77 β = 90
c = 45.34 γ = 120
Symmetry
Space Group P 31

Diffraction

Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 2000-10-15
IMAGE PLATE MARRESEARCH -- 2001-03-20
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE ENRAF-NONIUS FR571 1.5418 -- --
SYNCHROTRON ESRF BEAMLINE BM14 0.934 ESRF BM14

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
1.7 20 98.2 -- -- -- -- 19298 18292 2.0 2.0 24.2
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)
1.7 1.81 89.1 -- -- -- -- --

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
MIR 1.7 19.24 -- 0.0 18292 18292 1800 94.9 -- 0.194 0.194 0.225 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 1.7 1.81 -- 304 2578 0.247 0.279 0.016 89.1
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 31.1
Anisotropic B[1][1] -1.96
Anisotropic B[1][2] 0.18
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -1.96
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 3.92
RMS Deviations
Key Refinement Restraint Deviation
c_scangle_it 6.88
c_scbond_it 4.51
c_mcangle_it 5.52
c_mcbond_it 4.64
c_improper_angle_d 0.63
c_dihedral_angle_d 18.2
c_angle_deg 1.2
c_bond_d 0.005
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.19
Luzzati Sigma A (Observed) 0.17
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.23
Luzzati Sigma A (R-Free Set) 0.18
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1510
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 199

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
CNS Structure Solution
CNS 1.0 Structure Refinement
Software
Software Name Purpose
CNS version: 1.0 refinement
CNS model building