1NUI

Crystal Structure of the primase fragment of Bacteriophage T7 primase-helicase protein


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP6.3295Sodium Formate, MES, DTT, ATP, pH 6.3, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Crystal Properties
Matthews coefficientSolvent content
4.3471.41

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 136.459α = 90
b = 136.46β = 90
c = 85.445γ = 120
Symmetry
Space GroupP 31 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray110CCDADSC QUANTUM 42002-07-05MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONCHESS BEAMLINE F10.9474, 0.9797, 0.9795, 0.9300, 1.5418CHESSF1

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
12.66598.60.06514.72859928599
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)
12.62.6993.60.241

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Cut-off Sigma (F)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 DIFFRACTIONMADTHROUGHOUT2.91011905319053102999.820.236650.234520.27674RANDOM19.593
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]
2.11.052.1-3.14
RMS Deviations
KeyRefinement Restraint Deviation
r_scangle_it5.324
r_scbond_it3.191
r_mcangle_it2.025
r_angle_refined_deg1.464
r_dihedral_angle_1_deg1.173
r_mcbond_it1.037
r_symmetry_vdw_refined0.368
r_nbd_refined0.293
r_xyhbond_nbd_refined0.204
r_chiral_restr0.098
RMS Deviations
KeyRefinement Restraint Deviation
r_scangle_it5.324
r_scbond_it3.191
r_mcangle_it2.025
r_angle_refined_deg1.464
r_dihedral_angle_1_deg1.173
r_mcbond_it1.037
r_symmetry_vdw_refined0.368
r_nbd_refined0.293
r_xyhbond_nbd_refined0.204
r_chiral_restr0.098
r_symmetry_hbond_refined0.09
r_gen_planes_refined0.009
r_bond_refined_d0.008
r_bond_other_d
r_angle_other_deg
r_dihedral_angle_2_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3763
Nucleic Acid Atoms
Solvent Atoms14
Heterogen Atoms6

Software

Software
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
MLPHAREphasing