X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 5.6
Details PROTEIN WAS CRYSTALLIZED FROM 50% AMMONIUM SULFATE, 100 MM MES, PH 5.6

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 93.03 α = 90
b = 72.3 β = 90
c = 40.96 γ = 90
Symmetry
Space Group P 21 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 120
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR ENRAF-NONIUS FAST -- 1995-09-11
Diffraction Radiation
Monochromator Protocol
GRAPHITE(002) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE ELLIOTT GX-21 -- -- --

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
2.1 31 79.0 -- 0.075 -- 4.8 -- 13700 -- 3.0 16.3
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)
2.1 2.13 61.0 -- 0.137 -- 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
-- 2.1 20.0 -- 0.0 -- 13123 686 78.4 -- 0.171 0.171 0.225 RANDOM EXTENSION OF SET USED FOR 1BEE
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 2.1 2.2 -- 67 1381 0.245 0.289 -- 67.5
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 14.1
RMS Deviations
Key Refinement Restraint Deviation
x_dihedral_angle_d 23.4
x_angle_deg 1.5
x_mcbond_it 2.31
x_improper_angle_d 1.2
x_scangle_it 4.93
x_bond_d 0.008
x_mcangle_it 3.73
x_scbond_it 3.3
Coordinate Error
Parameter Value
Luzzati Sigma A (Observed) 0.19
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2476
Nucleic Acid Atoms 0
Heterogen Atoms 8
Solvent Atoms 279

Software

Software
Software Name Purpose
X-PLOR model building version: 3.843
X-PLOR refinement version: 3.843
MADNES data reduction
BIOMOL data scaling
X-PLOR phasing version: 3.843