1ELD

Structural analysis of the active site of porcine pancreatic elastase based on the x-ray crystal structures of complexes with trifluoroacetyl-dipeptide-anilide inhibitors


X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Details THE COMPLEX WAS CO-CRYSTALLIZED. THE CO-CRYSTALS WERE GROWN BY THE METHOD OF VAPOR DIFFUSION IN 40 MICROLITER DROPS CONTAINING 7MG/ML OF ELASTASE, 0.1 MILLIMOLAR TFA-PHE-ALA-TFM, 1.4 MILLIMOLAR SODIUM SULFATE AND 100 MILLIMOLAR SODIUM ACETATE AT PH 5. THE RESERVOIR CONSISTED OF 100 MILLIMOLAR SODIUM SULFATE AND 100 MILLIMOLAR ACETATE BUFFER AT PH 5.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 52.03 α = 90
b = 57.76 β = 90
c = 75.32 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline

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
-- 2.0 10.0 -- 0.0 -- -- -- -- -- 0.196 0.196 -- --
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1822
Nucleic Acid Atoms 0
Heterogen Atoms 38
Solvent Atoms 133

Software

Software
Software Name Purpose
X-PLOR model building
X-PLOR refinement
X-PLOR phasing