X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 8
Details ENZYME CONCENTRATION 1 MG/ML, PH 7.0 - 8.5, BUFFER 0.2 M TRIS-HCL, PRECIPITANT PEG 6000 (<10%), 70 MICROMOLAR ZINC SULPHATE, 6 MM BETA-MERCAPTOETHANOL, HANGING DROPS., pH 8.0, vapor diffusion - hanging drop

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 102.5 α = 90
b = 102.5 β = 90
c = 168.3 γ = 90
Symmetry
Space Group I 4 2 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1996-09
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON ESRF BEAMLINE BM14 -- ESRF BM14

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
2.3 35.6 99.9 0.088 -- -- 16.8 -- 459575 -- 3.0 --
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)
2.3 2.38 100.0 0.178 -- 3.9 9.3 --

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 2.3 6.0 -- 3.0 -- 19072 -- 99.9 -- 0.198 -- 0.27 --
RMS Deviations
Key Refinement Restraint Deviation
p_angle_d 0.023
p_bond_d 0.011
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2527
Nucleic Acid Atoms 0
Heterogen Atoms 2
Solvent Atoms 307

Software

Software
Software Name Purpose
DM model building
MLPHARE phasing
VECSUM model building
RESTRAIN refinement
MOSFLM data reduction
CCP4 data scaling version: (AGROVATA
ROTAVATA data scaling
DM phasing
VECSUM phasing