X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.4
Details THE PROTEIN CRYSTALLIZED IN 18% PEG 8000, 0.2M MG(OAC)2, 0.1M HEPES, PH 7.0. THE PROTEIN CONCENTRATION WAS ~10MG/ML IN A BUFFER OF 50MM NACL, 1MM EDTA, 10MM DTT, 1MM BENZAMIDINE, 1UM PEPSTATIN, 10UG/ML LEUPEPTIN, 25MM HEPES, PH 7.4.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 45.57 α = 90
b = 84.71 β = 90
c = 123.54 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU RAXIS IIC MIRRORS 1997-01-07
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RU300 -- -- --

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
2.45 38.2 98.2 -- 0.054 -- 18.8 -- 18307 -- -3.0 --
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)
2.45 2.54 90.1 0.324 -- 3.6 -- --

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 2.5 20.0 -- 2.0 -- 18098 -- -- -- 0.185 0.185 0.251 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 45.8
RMS Deviations
Key Refinement Restraint Deviation
x_bond_d 0.008
x_improper_angle_d 0.677
x_angle_deg 1.365
x_dihedral_angle_d 25.54
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2833
Nucleic Acid Atoms 0
Heterogen Atoms 22
Solvent Atoms 72

Software

Software
Software Name Purpose
AMoRE phasing version: (CCP4)
X-PLOR refinement
DENZO data reduction
SCALEPACK data scaling
CCP4 phasing