2Q0O

Crystal structure of an anti-activation complex in bacterial quorum sensing


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7.52981 mM DTT, 60 mM HEPES, 120 mM CaCl2, 16.8% PEG400, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal Properties
Matthews coefficientSolvent content
2.7655.45

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 56.9α = 94.87
b = 62.48β = 110.45
c = 65.5γ = 99.17
Symmetry
Space GroupP 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray298CCDNOIR-1Rosenbaum-Rock monochromator 1: high-resolution double-crystal sagittal focusing, Rosenbaum-Rock monochromator 2: double crystal, Rosenbaum-Rock vertical focusing mirror2005-06-09MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONALS BEAMLINE 4.2.21.127ALS4.2.2

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (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
124096.70.0880.0885.41.9655752539405519.8
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)
122.0796.70.4641.31.965580

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 1L3L239.855573553915269496.60.2350.2350.276RANDOM40
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]
-5.350.866.8-3.77-1.639.12
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d21.3
c_scangle_it3.59
c_scbond_it2.43
c_mcangle_it2.31
c_mcbond_it1.43
c_angle_deg1.2
c_improper_angle_d0.83
c_bond_d0.007
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms5050
Nucleic Acid Atoms
Solvent Atoms484
Heterogen Atoms34

Software

Software
Software NamePurpose
CNSrefinement
CrystalCleardata collection
d*TREKdata reduction
d*TREKdata scaling
PHASERphasing