X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.5
Details THE CRYSTALS WERE OBTAINED OVERNIGHT AT 4 C HANGING-DROP VAPOR DIFFUSION METHOD. THE DROPLET CONSISTED ON 25 MGR/ML (FINAL CONCENTRATION) PROTEIN MIXED WITH THE RESERVOIR WHICH CONTAINED 2.4 M AMMONIUM SULFATE, 100 MM PIPES BUFFER (PH 6.5), IN THE PRESENCE (UP TO 5 MM) OR ABSENCE OF DTT REDUCING AGENT. CRYSTALS WERE STABILIZED IN 40% (V/V) PEG400, 100 MM PIPES AND 20 MM HEXANOYL-COA PRIOR TO FREEZING AT 105 K.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 97.81 α = 90
b = 97.81 β = 90
c = 130.46 γ = 120
Symmetry
Space Group P 31 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 105
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MAC Science DIP-2000 -- 1998-09
Diffraction Radiation
Monochromator Protocol
NI FILTER SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE MACSCIENCE SRA -- -- --

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 70.71 84.62 -- 0.047 -- 1.81 -- 48429 -- -- --
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 1.94 23.8 -- 0.18 0.95 0.284 --

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
OTHER 1.9 70.71 -- 0.0 -- 48429 2421 84.62 -- -- 0.2129 0.29 RANDOM
RMS Deviations
Key Refinement Restraint Deviation
p_angle_d 4.086
p_bond_d 0.018
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 5990
Nucleic Acid Atoms 0
Heterogen Atoms 110
Solvent Atoms 440

Software

Software
Software Name Purpose
CCP4 model building version: (REFMAC+ARPP)
REFMAC refinement
DENZO data reduction
SCALEPACK data scaling
CCP4 phasing version: (ARPP)