X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.5
Details PROTEIN WAS CRYSTALLIZED FROM 100MM SODIUM CACODYLATE, 0.2M AMMONIUM SULFATE, 0.5M SODIUM BROMIDE, 30% PEG 8000, PH 6.5.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 72.4 α = 90
b = 48.98 β = 97.95
c = 84.06 γ = 90
Symmetry
Space Group P 1 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 298
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR SIEMENS DOUBLE-MIRROR FOCUSING CAMERAS 1996-01
Diffraction Radiation
Monochromator Protocol
NI FILTER --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE ELLIOTT GX-18 -- -- --

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 15 81.0 0.113 0.113 -- 2.2 -- 11809 -- 0.0 --
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 63.6 0.358 0.358 1.8 1.4 --

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 3.1 6.0 -- 1.0 -- 7935 556 85.0 -- 0.221 0.221 0.371 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 3.1 3.22 -- 59 783 0.291 0.477 0.062 72.0
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model ONE B-VALUE PER RESIDUE
Mean Isotropic B 28.0
Anisotropic B[1][1] -4.192
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] -6.204
Anisotropic B[2][2] 2.918
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 1.274
RMS Deviations
Key Refinement Restraint Deviation
x_dihedral_angle_d 25.8
x_bond_d 0.015
x_angle_deg 1.8
x_improper_angle_d 1.8
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.35
Luzzati Resolution Cutoff (Low) 6.0
Luzzati ESD (R-Free Set) 0.6
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3087
Nucleic Acid Atoms 0
Heterogen Atoms 42
Solvent Atoms 0

Software

Software
Software Name Purpose
XDS data scaling
SCALEPACK data scaling
X-PLOR model building
X-PLOR refinement version: 3.825
XDS data reduction
X-PLOR phasing