X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 8.5
Details VAPOR DIFFUSION, 4 DEG. C, 2 MICROLITER HANGING DROP CONTAINING 5 MG/ML PROTEIN, 20 MM TRIS (PH 8.5), 25 MM (NH4)2 HPO4, 0.5 MM DDT, 7% PEG 6K, 1 MM NACL EQUILIBRATED OVER A RESERVOIR CONTAINING 14% PEG 6K AND 2 M NACL. WITHIN 8 DAYS, 0.2 X 0.2 X 0.4 MM CRYSTALS., vapor diffusion - hanging drop

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 55.51 α = 90
b = 151.7 β = 90
c = 40.46 γ = 90
Symmetry
Space Group P 21 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 93
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH MSC/YALE MIRRORS 1996-08-18
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
-- -- -- -- --

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
1.95 30 90.3 -- 0.049 -- -- -- 24019 -- -- 17.4

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
MIR 1.95 8.0 -- 0.0 -- 22215 2208 87.6 -- 0.209 0.209 0.289 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 1.95 2.07 -- 200 2048 0.265 0.328 0.023 54.1
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 18.1
RMS Deviations
Key Refinement Restraint Deviation
x_improper_angle_d 1.48
x_dihedral_angle_d 22.1
x_angle_deg 1.5
x_mcangle_it 2.72
x_bond_d 0.009
x_scbond_it 3.69
x_scangle_it 5.58
x_mcbond_it 1.89
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.22
Luzzati Sigma A (Observed) 0.21
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.31
Luzzati Sigma A (R-Free Set) 0.2
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2383
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 207

Software

Software
Software Name Purpose
PHASES phasing
X-PLOR refinement version: 3.851
DENZO data reduction