1U94

Crystal Structure of E. Coli RecA in a Compressed Helical Filament Form 2


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7.5295PEG 550 MME, calcium chloride, hepes, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Crystal Properties
Matthews coefficientSolvent content
3.160

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 105.854α = 90
b = 105.854β = 90
c = 73.496γ = 120
Symmetry
Space GroupP 61

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDSBC-22003-07-30MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 19-IDAPS19-ID

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
11.934.6599.80.07936.311.9369513521116.7
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)
1.91.971000.7133.6

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-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB Entry 2REB1.934.653695135211349695.30.1870.222random30.75
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]
-0.862.16-0.861.72
RMS Deviations
KeyRefinement Restraint Deviation
x_torsion_deg22.7
x_scangle_it7.98
x_scbond_it5.83
x_mcangle_it4.26
x_mcbond_it3.4
x_angle_deg1.2
x_bond_d0.004
x_torsion_impr_deg
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2303
Nucleic Acid Atoms
Solvent Atoms277
Heterogen Atoms3

Software

Software
Software NamePurpose
CNSrefinement
HKL-2000data reduction
SCALEPACKdata scaling
AMoREphasing