X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 3MIN 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP5.5293.15The purified enzyme in 50 mM Tris/HCl pH 8.0, 300 mM NaCl, 2 mM dithionite was crystallized at 8 mg.ml-1. Crystallization was performed anaerobically in a tent containing 100 % N2 atmosphere. Crystals were obtained by initial screening at 20 degree Celsius on 96-Well MRC 2-drop crystallization plates in polystyrene (SWISSCI) containing 90 ul of crystallization solution in the reservoir. The protein sample (0.5 ul) was mixed with 0.5 ul reservoir solution. The reservoir solution contained 25 % w/v Polyethylene glycol 3,350, 100 mM BIS-TRIS at pH 5.5, and 200 mM Lithium sulfate. The plate was then incubated in a Coy tent (N2/H2, 97:3) at 20 degree Celsius. Crystals appeared after a few weeks and were soaked in the crystallization solution supplemented with 15 % v/v glycerol as a cryo-protectant before being frozen in liquid nitrogen.
Crystal Properties
Matthews coefficientSolvent content
2.448.75

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 148.392α = 90
b = 73.444β = 104.76
c = 211.253γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS PILATUS 2M-F/2021-11-27MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSLS BEAMLINE X06DA1.00003SLSX06DA

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Rrim I (All)Rpim I (All)CC (Half)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
13.029143.49386.60.2970.3460.1750.9573.43.739936
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Rrim I (All)Rpim I (All)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
13.0293.48669.40.5140.6150.3340.8061.63.3

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTFREE R-VALUE3.0395.51.3439924194546.190.20460.20370.2227Random selection35.11
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_d15.207
f_angle_d0.664
f_chiral_restr0.043
f_plane_restr0.005
f_bond_d0.004
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms31844
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms314

Software

Software
Software NamePurpose
PHENIXrefinement
BUSTERrefinement
autoPROCdata reduction
autoPROCdata scaling
PHASERphasing