X-RAY DIFFRACTION Experimental Data & Validation


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Crystallization

Crystalization Experiments
pH 6.04
Details BATCH, 1.51 M MGSO4 . 7 H2O, 0.59 MM TRYPSIN, 1.0 MM ZN(II) 5.0 % DMSO: CRYSTALLIZATION SOLUTION WAS SATURATED IN KETO-BABIM. CRYSTAL WAS TRANSFERRED TO SYNTHETIC MOTHER LIQUOR CONTAINING 46 MM ZN(II), PH 6.04 AND SOAKED FOR SEVERAL DAYS WITH SEVERAL REPLACEMENTS OF SOAKING SOLUTIONS. THE SOLUTION WAS SATURATED IN KETO-BABIM AND CONTAINED 2.0 % DMSO TO INCREASE INHIBITOR SOLUBILITY.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 54.95 α = 90
b = 54.95 β = 90
c = 109.69 γ = 120
Symmetry
Space Group P 31 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 298
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU RAXIS IV++ MSC MIRRORS 1997-01-07
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE -- -- -- --

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
1.38 109.69 81.0 0.06 -- -- 3.7 -- 28271 -- 1.0 --
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)
1.4 1.46 32.3 0.25 -- 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
DIFFERENCE FOURIER PLUS REFINEMENT 1.4 7.5 -- 1.8 -- 31052 3124 81.0 -- 0.186 0.186 0.218 --
High Resolution Shell
Refinement method Shell Resolution (High) Shell Resolution (Low) # of Reflections (Observed) # of Reflections (R-Free) # of Reflections (R-Work) R-Factor (R-Work) R-Factor (R-Free) R-Factor (R-Free Error) Percent Reflections (Observed)
X Ray Diffraction 1.4 1.46 -- 153 1370 0.463 0.472 -- 32.3
RMS Deviations
Key Refinement Restraint Deviation
x_improper_angle_d 0.61
x_bond_d 0.018
x_angle_deg 4.0
x_dihedral_angle_d 26.3
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1629
Nucleic Acid Atoms 0
Heterogen Atoms 31
Solvent Atoms 182

Software

Computing
Computing Package Purpose
BIOTEX (MSC) Data Reduction (intensity integration)
BIOTEX Data Reduction (data scaling)
X-PLOR, QUANTA, INSIGHTII Structure Solution
X-PLOR 3.1 Structure Refinement
Software
Software Name Purpose
X-PLOR version: 3.1 refinement
INSIGHTII model building
QUANTA model building
X-PLOR model building
BIOTEX version: (MSC) data reduction
BIOTEX version: (MSC) data collection