1B70

PHENYLALANYL TRNA SYNTHETASE COMPLEXED WITH PHENYLALANINE


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1PYSPDB ENTRY 1PYS

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7313CRYSTALS WERE GROWN BY THE HANGING-DROP TECHNIQUE AT 4O C WITH AMMONIUM SULFATE AS PRECIPITANT. EACH DROPLET OF THE PHENYLALANYL-TRNA SYNTHETASE SOLUTION (10 M L) AT A PROTEIN CONCENTRTION OF 3 TO 5 MG PER ML IN 20 AMM IMIDASOL-HCL BUFFER (PH 7.8), 1 MM MGCL2, 1 MM NAN3 AND 15% SATURATED AMMONIUM SULFATE WAS EQUILIBRATED WITH 1 ML 25 TO 30% SATURATED AMMONIUM SULFATE IN THE SAME BUFFER. CRYSTALS APPEARED AFTER ONE TO TWO WEEKS AND GREW UP TO MAXIMAL DIMENSIONS (0.4MMX0.4MMX0.25 MM) IN A FEW WEEKS., pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 313K
Crystal Properties
Matthews coefficientSolvent content
3.870

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 174α = 90
b = 174β = 90
c = 140.4γ = 120
Symmetry
Space GroupP 32 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATERIGAKU1998-12-15MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSPRING-8 BEAMLINE BL41XUSPring-8BL41XU

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
12.75089.40.0853.38161348
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)
12.72.8286.20.4172.23

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 1PYS2.7505993559935300089.40.2240.256RANDOM69
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
x_dihedral_angle_d28
x_scangle_it9.4
x_scbond_it6.27
x_mcangle_it5.4
x_mcbond_it3.5
x_angle_deg1.57
x_improper_angle_d0.77
x_bond_d0.01
x_bond_d_na
x_bond_d_prot
RMS Deviations
KeyRefinement Restraint Deviation
x_dihedral_angle_d28
x_scangle_it9.4
x_scbond_it6.27
x_mcangle_it5.4
x_mcbond_it3.5
x_angle_deg1.57
x_improper_angle_d0.77
x_bond_d0.01
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms8166
Nucleic Acid Atoms
Solvent Atoms134
Heterogen Atoms13

Software

Software
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
X-PLORmodel building
X-PLORrefinement
X-PLORphasing