X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.8
Details BUFFER NA/K-PHOSPHATE 20MM PH 7.8 AMMONIUM SULFATE 45% SATURATION (4 DEGREES) ACETONE 4% (V/V) PROTEIN 14.5 MG/ML

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 42.04 α = 90
b = 60.97 β = 90
c = 88.91 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 277
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU RAXIS IIC DOUBLE MIRROR 1995-12-07
Diffraction Radiation
Monochromator Protocol
DOUBLE CRYSTAL SI(111) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RUH3R -- -- --

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 38.01 93.5 0.063 0.063 -- 2.9 -- 14698 -- 1.0 26.6
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)
2.0 2.25 86.24 0.144 0.144 -- 2.0 --

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
FOURIER DIFFERENCE METHOD, STARTING WITH 1BTL 2.0 8.0 -- 1.0 -- 14660 1494 93.21 -- 0.156 0.156 0.206 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 2.0 2.07 -- 102 1053 0.224 0.228 0.022 78.58
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 28.9
RMS Deviations
Key Refinement Restraint Deviation
x_scangle_it 5.909
x_scbond_it 4.077
x_mcangle_it 2.998
x_mcbond_it 2.173
x_improper_angle_d 1.195
x_bond_d 0.006
x_angle_deg 1.336
x_dihedral_angle_d 22.25
Coordinate Error
Parameter Value
Luzzati Sigma A (Observed) 0.2
Luzzati Resolution Cutoff (Low) 8.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2030
Nucleic Acid Atoms 0
Heterogen Atoms 15
Solvent Atoms 127

Software

Computing
Computing Package Purpose
PROCESS (MSC) Data Reduction (intensity integration)
PROCESS (MSC) 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
PROCESS version: (MSC) data reduction
PROCESS version: (MSC) data collection