X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 8.2
Details 22-26% PEG 4000, 50 MM HEPES PH 8.0-8.4, 50 MM MGCL2, 10 MM 2-MERCAPTOETHANOL, 5-7 MG PROTEIN, pH 8.2

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 51.77 α = 90
b = 62.85 β = 90
c = 70.67 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 295
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE FUJI -- 1996-04-28
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X4A -- NSLS X4A

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
1.9 -- 84.0 0.09 -- -- 6.45 -- 17676 -- 0.0 16.5

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/SAD 1.9 20.0 -- 0.0 -- 17676 -- 84.0 -- -- -- -- --
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model TNT
RMS Deviations
Key Refinement Restraint Deviation
t_nbd 0.041
t_it 4.29
t_gen_planes 0.018
t_trig_c_planes 0.014
t_incorr_chiral_ct 0.0
t_dihedral_angle_d 19.65
t_angle_deg 1.95
t_bond_d 0.014
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1771
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 95

Software

Computing
Computing Package Purpose
HKL Data Reduction (intensity integration)
HKL Data Reduction (data scaling)
CCP4, PROTEIN Structure Solution
TNT V. 5-F Structure Refinement
Software
Software Name Purpose
TNT version: 5-F refinement
PROTEIN model building
CCP4 model building