X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 4.8
Details METHOD: SITTING DROP VAPOR DIFFUSION WITH SEEDING. TEMPERATURE: 293 K. RESERVOIR: 50-53% SATURATED AMMONIUM SULFATE, 150mM SODIUM CITRATE PH 4.8. PROTEIN: 7 mg/ml PROTEIN IN 5mM SODIUM PHOSPHATE PH 6.8, 10 mM SODIUM CHLORIDE.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 181.59 α = 90
b = 92.58 β = 131.86
c = 123.33 γ = 90
Symmetry
Space Group C 1 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 108
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 1 RH-coated toroidal mirror 1998-09-23
Diffraction Radiation
Monochromator Protocol
double crystal SI(111) MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON APS BEAMLINE 14-BM-D 0.9789, 0.9796, 0.9537 APS 14-BM-D

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
2.59 50 95.2 -- 0.052 -- 3.8 -- 46609 -- 2.0 46.1
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)
2.59 2.68 48.7 -- 0.175 18.7 2.8 --

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 2.6 8.0 -- 2.0 -- 44748 3612 99.0 -- -- 0.216 0.29 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 2.6 2.71 -- 429 4986 0.29 0.323 -- 98.0
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 31.3
RMS Deviations
Key Refinement Restraint Deviation
x_scangle_it 8.0
x_scbond_it 5.0
x_mcangle_it 5.5
x_mcbond_it 3.5
x_improper_angle_d 1.209
x_dihedral_angle_d 1.21
x_angle_deg 1.67
x_bond_d 0.08
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 9384
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 314

Software

Computing
Computing Package Purpose
HKL Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
SOLVE Structure Solution
X-PLOR Structure Refinement
Software
Software Name Purpose
X-PLOR refinement
SOLVE model building