3E3T

Structure of porcine pancreatic elastase with the magic triangle I3C


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP82770.1M HEPES, 0.6M sodium sulfate, pH 8.0, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Crystal Properties
Matthews coefficientSolvent content
2.08324540.96

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 50.096α = 90
b = 57.973β = 90
c = 74.395γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDBRUKER SMART 6000MULTI-LAYER INCOATEC OPTICS2008-03-28MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODEMACSCIENCE1.54178

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
11.637.298.60.03840.611.22889728897
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.61.791.50.18.382.76

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (All)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONSADFREE R1.637.22889728897144398.60.1590.1570.1570.213RANDOM17.458
Temperature Factor Modeling
Anisotropic B[1][1]Anisotropic B[1][2]Anisotropic B[1][3]Anisotropic B[2][2]Anisotropic B[2][3]Anisotropic B[3][3]
Coordinate Error
Structure Solution MethodRefinement High ResolutionRefinement Low Resolution
12
RMS Deviations
KeyRefinement Restraint Deviation
s_from_restr_planes0.5
s_similar_adp_cmpnt0.06
s_non_zero_chiral_vol0.053
s_zero_chiral_vol0.047
s_angle_d0.024
s_anti_bump_dis_restr0.015
s_bond_d0.008
s_similar_dist0.004
s_rigid_bond_adp_cmpnt
s_approx_iso_adps
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1806
Nucleic Acid Atoms
Solvent Atoms300
Heterogen Atoms75

Software

Software
Software NamePurpose
SHELXrefinement
PDB_EXTRACTdata extraction
APEXdata collection
SAINTdata reduction
SADABSdata scaling
SHELXDphasing
SHELXL-97refinement