3H8J

Native T4 RNase H in the absence of divalent metal ions


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP6.5295300 mM ammonium acetate, 100 mM sodium cacodylate, 15% PEG 8000, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Crystal Properties
Matthews coefficientSolvent content
2.5451.62

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 36.257α = 90
b = 86.458β = 92.04
c = 57.796γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 4MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS BEAMLINE X9BNSLSX9B

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
11.8200.04528.343312815.47
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)
1.81.860.1857.43285

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (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 REPLACEMENTpdb entry 1TFR native T4 RNase H1.819.2530.0532304101797.960.19310.19240.21345% random data subset18.89
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_angle_deg0.807
f_bond_d0.004
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2440
Nucleic Acid Atoms
Solvent Atoms282
Heterogen Atoms6

Software

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