X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.5
Details pH 7.5

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 126.9 α = 90
b = 255.3 β = 90
c = 105 γ = 90
Symmetry
Space Group C 2 2 21

Diffraction

Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1993-12-15
IMAGE PLATE MARRESEARCH -- 1992-11-10
Diffraction Radiation
Monochromator Protocol
-- --
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON EMBL/DESY, HAMBURG BEAMLINE X31 -- EMBL/DESY, HAMBURG X31
SYNCHROTRON LURE BEAMLINE DW32 -- LURE DW32

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
2.9 -- 90.9 0.01 -- -- 4.8 -- 33033 -- -- 50.0

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
MULTIPLE ISOMORPHOUS REPLACEMENT 2.75 20.0 -- 0.0 -- 36168 1832 84.3 -- 0.227 0.227 0.29 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 2.75 2.8 -- 49 710 0.387 0.441 -- 33.4
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 70.5
RMS Deviations
Key Refinement Restraint Deviation
x_scbond_it 3.7
x_mcbond_it 3.1
x_improper_angle_d 1.65
x_bond_d 0.014
x_angle_deg 1.83
x_dihedral_angle_d 24.7
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.4
Luzzati Sigma A (Observed) 0.45
Luzzati Resolution Cutoff (Low) 10.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 7384
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 23

Software

Computing
Computing Package Purpose
MOSFLM Data Reduction (intensity integration)
CCP4 (AGROVATA, ROTAVATA) Data Reduction (data scaling)
X-PLOR 3.1 Structure Solution
X-PLOR 3.1 Structure Refinement
Software
Software Name Purpose
X-PLOR version: 3.1 refinement
X-PLOR version: 3.1 model building