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
SELENOMETHIONINE MAD 2.3 6.0 -- 3.0 -- 19072 -- 99.9 -- 0.198 -- 0.27 --
RMS Deviations
Key Refinement Restraint Deviation
p_bond_d 0.011
p_angle_d 0.023
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

Computing
Computing Package Purpose
MOSFLM Data Reduction (intensity integration)
CCP4 (AGROVATA, ROTAVATA) Data Reduction (data scaling)
DM, MLPHARE, VECSUM Structure Solution
RESTRAIN Structure Refinement
Software
Software Name Purpose
RESTRAIN refinement
VECSUM model building
MLPHARE model building
DM model building