X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.2
Details PROTEIN WAS CRYSTALLIZED FROM 33% PEG2000, 0.45 M NACL, 0.15 M NAPI (PH 6.2) AND 0.5% N-OCTYL-2-HYDROXYETHYLSULFOXIDE

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 132.9 α = 90
b = 89.9 β = 95.2
c = 90 γ = 90
Symmetry
Space Group C 1 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 293
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1998-04-29
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON LURE BEAMLINE DW32 -- LURE DW32

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
2.74 30 95.6 0.055 -- -- 3.5 -- 26534 -- -- 63.1

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
MAD 2.74 12.0 -- 0.0 -- 25235 1262 93.0 -- 0.186 0.186 0.244 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 2.74 2.88 -- 138 2618 0.309 0.372 0.032 70.2
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 53.8
Anisotropic B[1][1] 2.2
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 21.12
Anisotropic B[2][2] -9.94
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 7.75
RMS Deviations
Key Refinement Restraint Deviation
c_scangle_it 7.39
c_scbond_it 5.4
c_mcangle_it 5.06
c_mcbond_it 3.34
c_improper_angle_d 0.85
c_bond_d 0.006
c_angle_deg 1.3
c_dihedral_angle_d 27.1
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.3
Luzzati Sigma A (Observed) 0.48
Luzzati Resolution Cutoff (Low) 4.5
Luzzati ESD (R-Free Set) 0.42
Luzzati Sigma A (R-Free Set) 0.62
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 5435
Nucleic Acid Atoms 0
Heterogen Atoms 91
Solvent Atoms 151

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
SOLVE Structure Solution
CNS 0.4 Structure Refinement
Software
Software Name Purpose
CNS version: 0.4 refinement
SOLVE model building
SCALEPACK data reduction
DENZO data collection