X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 4.6
Details pH 4.6

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 58.62 α = 90
b = 56.48 β = 95.99
c = 93.83 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 95
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD BRANDEIS -- 1998-01
Diffraction Radiation
Monochromator Protocol
-- MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X12C 0.95,0.9786,0.9789,1.0 NSLS X12C

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
2.25 50 92.6 0.045 0.107 -- 6.2 -- 27284 -- 0.0 --
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)
2.25 2.33 59.8 0.097 0.139 4.5 3.1 --

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 2.25 30.0 -- 2.0 -- 26812 1327 91.7 -- -- 0.173 0.234 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 2.25 2.33 -- 72 1655 0.1926 0.2667 -- 59.04
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 35.39
Anisotropic B[1][1] 1.787
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] -0.58
Anisotropic B[2][2] -4.65
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 2.871
RMS Deviations
Key Refinement Restraint Deviation
x_scangle_it 11.179
x_angle_deg 1.18
x_scbond_it 7.847
x_dihedral_angle_d 21.8
x_improper_angle_d 0.64
x_bond_d 0.007
x_mcangle_it 8.3
x_mcbond_it 5.563
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.21
Luzzati Sigma A (Observed) 0.16
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.3
Luzzati Sigma A (R-Free Set) 0.23
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 4265
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 398

Software

Software
Software Name Purpose
X-PLOR model building
CNS refinement
DENZO data reduction
SCALEPACK data scaling
X-PLOR phasing
CNS phasing