1E34

PORCINE PANCREATIC ELASTASE COMPLEXED WITH (3S, 4S)N-PARA-TOLUENESULPHONYL-3-ETHYL-4-(CARBOXYLIC ACID) PYRROLIDIN-2-ONE SOAKED IN PH 9 BUFFER FOR ONE MINUTE


X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 9
Details 25MM SODIUM SULPHATE, 25MM SODIUM ACETATE, PH 5.0; THEN SOAKED IN 25 MM SODIUM SULPHATE, 50MM SODIUM ACETATE, 20 MG/ML GAMMA-LACTAM, 10% (V/V) DMSO, PH 5.0 FOR 24 HOURS

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 50.43 α = 90
b = 57.54 β = 90
c = 74.39 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD PRINCETON SCIENTIFIC INSTRUMENTS -- 1997-02-15
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
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
1.8 19.62 95.6 0.047 -- -- 7.12 -- 19681 -- 0.0 14.05
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)
1.8 1.83 84.6 0.062 -- 10.07 1.49 --

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
MOLECULAR REPLACEMENT 1.8 19.62 -- 0.0 -- 19681 810 95.6 -- -- 0.19 0.218 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 16.74
Anisotropic B[1][1] 1.61
Anisotropic B[1][2] -0.27
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 0.0
Anisotropic B[2][3] -1.09
Anisotropic B[3][3] 0.0
RMS Deviations
Key Refinement Restraint Deviation
p_special_tor 0.0
p_transverse_tor 22.5
p_staggered_tor 15.0
p_planar_tor 3.8
p_xyhbond_nbd 0.15
p_multtor_nbd 0.25
p_bond_d 0.011
p_angle_d 0.028
p_planar_d 0.028
p_mcbond_it 1.45
p_mcangle_it 2.04
p_scbond_it 1.87
p_scangle_it 2.88
p_chiral_restr 0.14
p_singtor_nbd 0.18
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1822
Nucleic Acid Atoms 0
Heterogen Atoms 27
Solvent Atoms 149

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
X-PLOR Structure Solution
REFMAC Structure Refinement
Software
Software Name Purpose
REFMAC refinement
X-PLOR model building