9QQ7 | pdb_00009qq7

Crystal structure of the relaxase domain of RelpLS20, Se-Met derivative


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP82911ul of protein at 6mg/ml in 20mM Tris pH 8.0, 500mM NaCl were added to 1ul reservoir (0.1 M Imidazole pH 8.0, 10 % PEG 8000) and equilibrated against 100 uL of the crystallization buffer. Bar-shaped crystals took 16 h to grow to the maximum size at 18 C. Cryo-cooling in liquid nitrogen was carried out using a cryo-protecting solution containing reservoir solution supplemented with 20 % (w/v) glycerol.
Crystal Properties
Matthews coefficientSolvent content
3.362.68

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 102.054α = 90
b = 102.054β = 90
c = 59.116γ = 120
Symmetry
Space GroupP 61

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS PILATUS 6MKB mirrors2016-02-05MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONALBA BEAMLINE XALOC0.979190ALBAXALOC

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Rrim 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
11.5919.3199.60.0560.060.99912.94.3163980
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Rrim I (All)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.591.633.0253.2720.178

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-Work (Depositor)R-Work (DCC)R-Free (Depositor)R-Free (DCC)Mean Isotropic B
X-RAY DIFFRACTIONSADFREE R-VALUE1.819.310.0628529142787.060.18410.18280.18250.21050.210344.74
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_d6.3449
f_angle_d1.3747
f_chiral_restr0.0894
f_bond_d0.0154
f_plane_restr0.0136
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1671
Nucleic Acid Atoms
Solvent Atoms86
Heterogen Atoms

Software

Software
Software NamePurpose
MxCuBEdata collection
XDSdata reduction
XSCALEdata scaling
SHELXCDphasing
Cootmodel building
PHENIXrefinement