2FOB

Structure of porcine pancreatic elastase in 40/50/10 cyclohexane


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1ELAPDB ENTRY 1ELA

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP529115 mg/ml elastase, 25 mM Sodium Acetate, 135 mM Sodium sulfate, 10 ul drop (5x5). See also: Sawyer et al., J.Mol.Biol. 118, 137-208 (1978)., pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Crystal Properties
Matthews coefficientSolvent content
2.1743.41

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 52.02α = 90
b = 57.92β = 90
c = 74.84γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray298IMAGE PLATERIGAKU RAXIS IIMSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RU2001.5418

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (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
11.950051.517719

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 1ELA1.95001771992451.50.1630.198Random23.362
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]
-1.8111.1620.649
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d25.6788
c_angle_d1.2379
c_improper_angle_d0.6471
c_bond_d0.00424
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1822
Nucleic Acid Atoms
Solvent Atoms150
Heterogen Atoms26

Software

Software
Software NamePurpose
PROCESSdata reduction
CNSrefinement
PROCESSdata scaling
CNSphasing