X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Sitting Drop
pH 6.5
Temperature 277.0
Details PEG 20K, Ammonium Acetate, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 105.1 α = 90
b = 105.1 β = 90
c = 292.3 γ = 90
Symmetry
Space Group P 41 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 163
2 163
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 -- 2000-12-06
CCD MAR CCD 165 mm -- 2001-01-15
Diffraction Radiation
Monochromator Protocol
Si(111) MAD
Undulator MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X4A 0.96675 NSLS X4A
SYNCHROTRON APS BEAMLINE 31-ID 0.97958,0.97941,0.96482 APS 31-ID

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 94.7 0.074 -- -- 19.0 72278 68697 2.0 2.0 --
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 50.0 94.7 0.074 -- 17.8 19.0 1335912

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 50.0 -- 2.0 78627 68697 6979 87.4 0.219 0.214 0.215 0.245 random
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model Overall
Mean Isotropic B 36.4
Anisotropic B[1][1] -1.118
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -1.118
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 2.235
RMS Deviations
Key Refinement Restraint Deviation
c_angle_deg 1.265
c_mcbond_it 1.337
c_bond_d 0.0066
c_mcangle_it 2.174
c_scangle_it 3.204
c_scbond_it 2.265
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.27
Luzzati Sigma A (Observed) 0.21
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.32
Luzzati Sigma A (R-Free Set) 0.25
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 7894
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 516

Software

Software
Software Name Purpose
DENZO data reduction
SCALEPACK data scaling
CNS refinement
CNS phasing