X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7.4292Crystals were grown at 19 C using the hanging drop method by mixing 2 uL of protein solution (385 uM of protein in 20 mM NaPi pH 6.5 and cellotriose 5 mM) , with 2 uL of resevoir buffer (100 mM Tris HCl pH 7.4 with 17.5 pc w/v polyethylene glycol 600) containing seeds. Crystals were cryoprotected by equilibrating 2 hours the drop against 500 uL reservoir containing 0.1M Tris PEG 600 30pc pH 7.4.
Crystal Properties
Matthews coefficientSolvent content
2.3246.98

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 45.69α = 90
b = 99.31β = 90
c = 148.58γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 315r2015-06-11MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSOLEIL BEAMLINE PROXIMA 20.9801SOLEILPROXIMA 2

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
11.7347.09990.09315.818.67057220.2870816768
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)
11.731.8940.862.548

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation 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 REPLACEMENTFREE R-VALUE4EE9 polyalanine1.7343960122438.9185626211.3578749869970563352999.33973420430.1774177443350.1755787241230.21230564801924.3568679699
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]
RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d10.7941097506
f_angle_d0.920329285218
f_chiral_restr0.0564654844079
f_plane_restr0.00658217571003
f_bond_d0.00643096369537
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms5065
Nucleic Acid Atoms
Solvent Atoms821
Heterogen Atoms68

Software

Software
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
PHASERphasing
PHENIXmodel building
Cootmodel building
PHENIXrefinement