X-RAY DIFFRACTION Experimental Data & Validation

X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.5
Details PROTEIN WAS CRYSTALLIZED FROM 20% PEG 4000, 0.1 M HEPES, CACL2 0.2 M, PH 7.5

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 112.5 α = 90
b = 112.5 β = 90
c = 63.2 γ = 120
Symmetry
Space Group H 3 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 293
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH MIRRORS 1992-10
Diffraction Radiation
Monochromator Protocol
SI(111) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SRS BEAMLINE PX9.5 -- SRS PX9.5

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
1.9 20 97.7 0.045 0.045 -- 2.2 -- 11867 -- 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)
1.9 1.97 96.3 0.26 0.26 2.9 2.2 --

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
MULTIPLE WAVELENGTH ANOMALOUS DISPERSION (MAD) 1.9 20.0 -- 0.0 13564 -- 689 97.7 0.2 0.2 -- 0.23 RANDOM
RMS Deviations
Key Refinement Restraint Deviation
s_bond_d 0.02
s_zero_chiral_vol 0.083
s_non_zero_chiral_vol 0.141
s_anti_bump_dis_restr 0.013
s_similar_dist 0.0
s_from_restr_planes 0.274
s_angle_d 0.035
Coordinate Error
Parameter Value
Occupancy Sum Non Hydrogen 1027.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 974
Nucleic Acid Atoms 0
Heterogen Atoms 3
Solvent Atoms 71

Software

Software
Software Name Purpose
SHELXL-93 model building
SHELXL-93 refinement
DENZO data reduction
SCALEPACK data scaling
SHELXL-93 phasing