X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.3
Details Protein solution: 15 mg/mL protein in 0.01 M HEPES, 0.15 M sodium chloride, 0.005 M DTT, 0.005 M EDTA with pH 7.1-8.0. Reservoir: 2.3 M ammonium sulfate at pH 7.1-7.5. Hanging drop vapor diffusion method. Drops were formed by combining 4 microliters reservoir solution with 4 microliters protein solution. Room temperature., pH 7.3

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 55.11 α = 90
b = 55.11 β = 90
c = 144.43 γ = 90
Symmetry
Space Group P 41 2 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 115
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD BRUKER -- 2000-02-27
Diffraction Radiation
Monochromator Protocol
-- MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON APS BEAMLINE 17-ID 0.9794, 0.9796, 0.9641, 0.9832 APS 17-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
2.5 20 100.0 0.04 -- -- 4.0 -- 14507 -- -- --
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)
2.5 2.6 100.0 0.15 -- 2.0 4.0 --

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
-- 2.5 20.0 -- 0.0 13792 -- 715 100.0 0.1915 0.1851 -- 0.2986 RANDOM
RMS Deviations
Key Refinement Restraint Deviation
s_approx_iso_adps 0.0
s_similar_adp_cmpnt 0.123
s_rigid_bond_adp_cmpnt 0.0
s_anti_bump_dis_restr 0.009
s_non_zero_chiral_vol 0.038
s_zero_chiral_vol 0.03
s_from_restr_planes 0.0297
s_similar_dist 0.0
s_angle_d 0.026
s_bond_d 0.006
Coordinate Error
Parameter Value
Number Disordered Residues 0.0
Occupancy Sum Hydrogen 0.0
Occupancy Sum Non Hydrogen 1655.5
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1507
Nucleic Acid Atoms 0
Heterogen Atoms 10
Solvent Atoms 139

Software

Computing
Computing Package Purpose
HKL-2000 Data Reduction (intensity integration)
SHELX Structure Solution
SHELXL-97 Structure Refinement
Software
Software Name Purpose
SHELXL-97 refinement
SHELX model building
HKL2000 data collection