1M0I

Crystal Structure of Bacteriophage T7 Endonuclease I with a Wild-Type Active Site


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1Vapor diffusion, hanging drop. Seeds of E65K mutant used.7.2291PEG 4000, Ammonium sulphate, Sodium chloride, Tris HCL, pH 7.2, Vapor diffusion, hanging drop. Seeds of E65K mutant used., temperature 291K
Crystal Properties
Matthews coefficientSolvent content
3.9668.97

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 123.44α = 90
b = 134.55β = 90
c = 61.39γ = 90
Symmetry
Space GroupP 21 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 42001-03-27MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSRS BEAMLINE PX14.20.978SRSPX14.2

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (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
12.5533.1399.80.0639.54.9340143401449.8
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
2.552.6899.90.3052.44.84893

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)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 1M0D2.5533.1333984168699.50.2220.2220.273RANDOM46.9
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]
5.67-2.71-2.96
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d24.1
c_angle_deg1.6
c_improper_angle_d1.08
c_bond_d0.011
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4097
Nucleic Acid Atoms
Solvent Atoms53
Heterogen Atoms15

Software

Software
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
CNSrefinement
CCP4data scaling
CNSphasing