X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.7
Details 20MM KMES PH6.7, 75MM NACL, 10% GLYCEROL, AND 6% PEG4000

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 169.59 α = 90
b = 182.52 β = 90
c = 240.57 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 MARRESEARCH CYL.-BENT MIRRORS 1995-03-20
Diffraction Radiation
Monochromator Protocol
SI(111) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SSRL BEAMLINE BL7-1 -- SSRL BL7-1

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
3.16 -- 91.6 0.095 0.102 -- 4.5 -- 123869 -- -2.0 64.6
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)
3.16 3.27 84.5 0.324 0.4 2.7 3.32 --

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 AND NCS AVERAGING 3.16 12.0 -- 2.0 -- 107167 5446 85.5 -- 0.27 0.27 0.31 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 3.16 3.35 -- 694 13256 0.407 0.43 0.016 67.3
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 78.4
Anisotropic B[1][1] -48.37
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 23.87
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 24.5
RMS Deviations
Key Refinement Restraint Deviation
c_improper_angle_d 0.89
c_bond_d 0.009
c_angle_deg 1.613
c_dihedral_angle_d 20.8
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.55
Luzzati Sigma A (Observed) 0.46
Luzzati Resolution Cutoff (Low) 12.0
Luzzati ESD (R-Free Set) 0.66
Luzzati Sigma A (R-Free Set) 0.56
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 15439
Nucleic Acid Atoms 0
Heterogen Atoms 280
Solvent Atoms 0

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
MLPHARE, RAVE Structure Solution
CNS 0.1 Structure Refinement
Software
Software Name Purpose
CNS version: 0.1 refinement
RAVE model building
MLPHARE model building
SCALEPACK data reduction
DENZO data collection