2FXQ

Single-stranded DNA-binding protein from Thermus aquaticus


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP4.6293protein solution : 25mg/ml, 1M NaCl, 10mM Tris pH 7.9. well solution : 25% MPD, 20 mM CaCl2, 0.1 M acetate buffer pH 4.6 mix 1:1, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties
Matthew coefficientSolvent content
2.0941.25

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 51.14α = 90
b = 163.77β = 90
c = 60.16γ = 90
Symmetry
Space GroupC 2 2 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARRESEARCH2005-02-07MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 22-BM1.039APS22-BM

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
11.85401000.050.0533.962206622066-3-331.6
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.851.921000.8320.8322.462165

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 (All)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUT1.8530-3209122091211301000.192070.192070.189340.24731RANDOM35.318
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]
-0.86-1.242.11
RMS Deviations
KeyRefinement Restraint Deviation
r_scangle_it10.112
r_dihedral_angle_1_deg7.109
r_scbond_it6.772
r_mcangle_it5.602
r_mcbond_it3.269
r_angle_refined_deg1.934
r_symmetry_vdw_refined0.244
r_nbd_refined0.228
r_symmetry_hbond_refined0.227
r_xyhbond_nbd_refined0.212
RMS Deviations
KeyRefinement Restraint Deviation
r_scangle_it10.112
r_dihedral_angle_1_deg7.109
r_scbond_it6.772
r_mcangle_it5.602
r_mcbond_it3.269
r_angle_refined_deg1.934
r_symmetry_vdw_refined0.244
r_nbd_refined0.228
r_symmetry_hbond_refined0.227
r_xyhbond_nbd_refined0.212
r_chiral_restr0.164
r_bond_refined_d0.021
r_gen_planes_refined0.008
r_nbtor_refined
r_nbtor_other
r_dihedral_angle_3_deg
r_bond_other_d
r_metal_ion_refined
r_metal_ion_other
r_dihedral_angle_4_deg
r_symmetry_vdw_other
r_angle_other_deg
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_sphericity_bonded
r_mcbond_other
r_gen_planes_other
r_dihedral_angle_2_deg
r_nbd_other
r_rigid_bond_restr
r_sphericity_free
r_xyhbond_nbd_other
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1547
Nucleic Acid Atoms
Solvent Atoms135
Heterogen Atoms

Software

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