X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.5
Details HANGING DROP AGAINST 2.0 M AMMONIUM SULFATE AND 0.1M MES BUFFER AT PH 6.8 THE PROTEIN CONCENTATION WAS ABOUT 3 MG./ML.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 50.69 α = 90
b = 85.51 β = 93.69
c = 96.69 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH MIRRORS 1998-10-27
Diffraction Radiation
Monochromator Protocol
SI(111) SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON EMBL/DESY, HAMBURG BEAMLINE X11 -- EMBL/DESY, Hamburg X11

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
2.4 50 99.0 0.064 -- -- 4.04 -- 32934 -- -- 14.6
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)
2.4 2.44 82.3 0.217 -- 3.0 3.04 --

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 2.37 20.0 -- 0.0 -- 32857 1346 98.8 -- 0.17 0.17 0.212 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 2.37 2.52 -- 217 4701 0.195 0.248 0.017 88.7
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 17.9
Anisotropic B[1][1] -2.37
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.83
Anisotropic B[2][2] 0.04
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 2.33
RMS Deviations
Key Refinement Restraint Deviation
c_dihedral_angle_d 26.8
c_bond_d 0.007
c_angle_deg 1.2
c_scangle_it 5.47
c_mcbond_it 2.63
c_mcangle_it 3.5
c_scbond_it 4.61
c_improper_angle_d 1.04
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.2
Luzzati Sigma A (Observed) 0.17
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.26
Luzzati Sigma A (R-Free Set) 0.22
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 5214
Nucleic Acid Atoms 0
Heterogen Atoms 2
Solvent Atoms 618

Software

Software
Software Name Purpose
CNS refinement version: 0.5
DENZO data reduction
SCALEPACK data scaling
CNS phasing version: 0.5