X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 2XTTPDB ENTRY 2XTT

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP292TRYPSIN (SIGMA T1426) WAS DISOLVED IN 1 MM HCL (PH 2.0), 10 MM CACL2, PURIFIED ON A SUPERDEX 75 16/60 COLUMN (BUFFER: 25 MM MES PH 5.5, 50 MM NACL AND 10 MM CACL2). CRYSTALS GREW FROM EQUAL VOLUMES OF TRYPSIN (11.5 MG/ML) INCUBATED WITH LYOPHILIZED SOTI-III F14A (1.5MM) AND PRECIPITANT SOLUTION (0.1M BICINE PH 9, 20% (W/V) PEG 6000) IN HANGING DROP CRYSTALLIZATION PLATES AT 19C.
Crystal Properties
Matthews coefficientSolvent content
2.0239.11

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 48.51α = 90
b = 68.38β = 93.25
c = 109.79γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARMOSAIC 225 mm CCD2011-09-28MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONBESSY BEAMLINE 14.1BESSY14.1

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
122098.70.148.33.248020210.57
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)
122.198.50.452.93.2

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTPDB ENTRY 2XTT219.8891.9948006240598.820.16940.16670.2202
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]
3.845-0.9015-1.7329-2.1121
RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d14.015
f_angle_d0.862
f_chiral_restr0.06
f_bond_d0.004
f_plane_restr0.003
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms5601
Nucleic Acid Atoms
Solvent Atoms656
Heterogen Atoms19

Software

Software
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing