3MHE

Crystal Structure of Ketosteroid Isomerase P39A from Pseudomonas Testosteroni (tKSI)


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 8CHOPDB ENTRY 8CHO

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP7.22982.0 M ammonium sulfate, 5% propanol, 20 mM potassium phosphate, 1 mM EDTA, 2 mM DTT, pH 7.2, vapor diffusion, sitting drop, temperature 298K, VAPOR DIFFUSION, SITTING DROP
Crystal Properties
Matthews coefficientSolvent content
2.1843.7

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 40.763α = 90
b = 66.026β = 90
c = 86.924γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 315r2010-03-16MSINGLE WAVELENGTH
21x-ray100CCDMARMOSAIC 325 mm CCD2010-01-05MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSSRL BEAMLINE BL9-10.98SSRLBL9-1
2SYNCHROTRONSSRL BEAMLINE BL9-20.98SSRLBL9-2

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Sym 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
1,21.72229.73299.70.04637.313.6255332553323.8
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
1,21.7221.811000.5394.410.638331

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 8CHO1.72229.732553325479129199.750.1890.1870.233RANDOM26.212
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]
0.06-0.06
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg35.339
r_dihedral_angle_4_deg22.324
r_dihedral_angle_3_deg16.488
r_dihedral_angle_1_deg6.541
r_scangle_it5.642
r_scbond_it3.822
r_mcangle_it2.368
r_angle_refined_deg2.25
r_mcbond_it1.477
r_chiral_restr0.173
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg35.339
r_dihedral_angle_4_deg22.324
r_dihedral_angle_3_deg16.488
r_dihedral_angle_1_deg6.541
r_scangle_it5.642
r_scbond_it3.822
r_mcangle_it2.368
r_angle_refined_deg2.25
r_mcbond_it1.477
r_chiral_restr0.173
r_bond_refined_d0.027
r_gen_planes_refined0.014
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1858
Nucleic Acid Atoms
Solvent Atoms156
Heterogen Atoms39

Software

Software
Software NamePurpose
SCALAdata scaling
MOLREPphasing
REFMACrefinement
PDB_EXTRACTdata extraction
Web-Icedata collection
Blu-Icedata collection
XDSdata reduction