X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.5
Details 25 MG/ML PROTEIN IN 39% SATURATING (NH4)2SO4, 100 MM TRIS, 10 MM MGCL2 100 MM ZNCL2, 2 MM NAH2PO4 AT PH 7.5, EQUILIBRATED AGAINST 55% SATURATING (NH4)2SO4

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 164.57 α = 90
b = 164.5 β = 90
c = 138.59 γ = 120
Symmetry
Space Group P 63 2 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 292
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR SIEMENS-NICOLET X100 -- 1996-07
Diffraction Radiation
Monochromator Protocol
GRAPHITE(002) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RUH2R -- -- --

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
2.8 37 96.0 0.13 -- -- 3.5 -- 26363 -- 0.0 24.3
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)
2.8 2.9 85.0 0.372 -- 1.4 3.0 --

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
MOLECULAR REPLACEMENT 2.8 9.0 -- 2.0 -- 22562 4 84.0 -- 0.138 0.138 0.173 --
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 2.8 2.85 -- 4 761 0.2051 0.2285 -- 85.0
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model ALL ATOMS
Mean Isotropic B 21.92
RMS Deviations
Key Refinement Restraint Deviation
x_bond_d 0.015
x_improper_angle_d 1.6
x_angle_deg 1.8
x_dihedral_angle_d 24.3
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.2
Luzzati Resolution Cutoff (Low) 9.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 6604
Nucleic Acid Atoms 0
Heterogen Atoms 16
Solvent Atoms 677

Software

Software
Software Name Purpose
XDS data scaling
XDS data reduction
X-PLOR model building version: 3.1
X-PLOR refinement version: 3.1
X-PLOR phasing version: 3.1