5AQX

Fragment-based screening of HSP70 sheds light on the functional role of ATP-binding site residues


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1S3XPDB ENTRY 1S3X

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
17.529117-28% (W/V) PEG3350, 0.1 M HEPES PH 7.5, 2 MM MGCL2, 2 MM NAH2PO4 AND 5 MM ADENOSINE, THEN BACKSOAKED WITH 100 MM INHIBITOR (20% DMSO) FOR 16H AT 18 DEGREES C
Crystal Properties
Matthews coefficientSolvent content
2.3247.07

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 51.845α = 90
b = 82.021β = 90
c = 94.421γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS PILATUS 6M-F2013-05-17MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONDIAMOND BEAMLINE I02DiamondI02

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
12.1247.2174.90.0717.38.71762532.63
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)
12.122.1817.90.671.22.3

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 1S3X2.1247.211755181174.630.19560.1940.2273RANDOM38.92
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]
2.72626.5824-9.3086
RMS Deviations
KeyRefinement Restraint Deviation
t_other_torsion17.86
t_omega_torsion2.73
t_angle_deg1.08
t_bond_d0.01
t_dihedral_angle_d
t_incorr_chiral_ct
t_pseud_angle
t_trig_c_planes
t_gen_planes
t_it
RMS Deviations
KeyRefinement Restraint Deviation
t_other_torsion17.86
t_omega_torsion2.73
t_angle_deg1.08
t_bond_d0.01
t_dihedral_angle_d
t_incorr_chiral_ct
t_pseud_angle
t_trig_c_planes
t_gen_planes
t_it
t_nbd
t_improper_torsion
t_chiral_improper_torsion
t_sum_occupancies
t_utility_distance
t_utility_angle
t_utility_torsion
t_ideal_dist_contact
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2911
Nucleic Acid Atoms
Solvent Atoms107
Heterogen Atoms37

Software

Software
Software NamePurpose
BUSTERrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing