X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.5
Details 2.2M AMMONIUM SULPHATE, 20% V/V GLYCEROL, 4MM DITHIOTHREITOL, 100 MM HEPES PH 7.5, 125MM NACL 5:1 PEPTIDE:PROTEIN

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 43.68 α = 90
b = 71.92 β = 90
c = 89.2 γ = 90
Symmetry
Space Group C 2 2 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH OSMIC MIRRORS 2000-07-10
Diffraction Radiation
Monochromator Protocol
OSMIC MIRRORS SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU -- -- --

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
1.87 19.1 99.8 0.073 0.073 -- 7.4 -- 88913 -- -- 27.0
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)
1.87 1.98 99.5 0.204 0.204 8.7 7.0 --

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
SIRAS 1.87 19.0 -- 0.0 -- 11944 572 99.8 -- -- 0.187 0.209 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 21.0
Anisotropic B[1][1] -1.0
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 0.4
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 0.6
RMS Deviations
Key Refinement Restraint Deviation
p_bond_d 0.016
p_angle_d 3.9
p_mcbond_it 2.3
p_mcangle_it 3.6
p_scbond_it 3.4
p_scangle_it 5.3
p_plane_restr 0.006
p_chiral_restr 0.094
p_singtor_nbd 0.31
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 981
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 109

Software

Computing
Computing Package Purpose
MOSFLM Data Reduction (intensity integration)
CCP4 (SCALA) Data Reduction (data scaling)
SHARP Structure Solution
REFMAC Structure Refinement
Software
Software Name Purpose
REFMAC refinement
SHARP model building