1OBH

LEUCYL-TRNA SYNTHETASE FROM THERMUS THERMOPHILUS COMPLEXED WITH A PRE-TRANSFER EDITING SUBSTRATE ANALOGUE IN BOTH SYNTHETIC ACTIVE SITE AND EDITING SITE


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1H3NPDB ENTRY 1H3N

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
16.5PROTEIN 10 MG/ML IN 50MM BIS-TRIS PROPANE BUFFER PH 6.0-6.5 2MM DTT, 20MM MGCL2, 1MM NAN3, 18% AMMONIUM SULPHATE EQUILBRIATED AGAINST 30-38% AMMONIUM SULPHATE IN 100MM BIS-TRIS PROPANE BUFFER PH 6.0-6.5. SEE REFERENCE 2
Crystal Properties
Matthews coefficientSolvent content
3.564

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 103.515α = 90
b = 152.884β = 90
c = 172.605γ = 90
Symmetry
Space GroupC 2 2 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDCCD2001-07-04MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONESRF BEAMLINE ID14-1ESRFID14-1

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
12.22098.10.0538.44.46828836.5
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)
12.22.2685.80.391.62.9

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 1H3N2.219.9968248338898.20.2130.2130.234RANDOM48.6
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]
-7.218.7-1.49
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d21.9
c_mcangle_it6.5
c_scangle_it5.36
c_mcbond_it4.98
c_scbond_it3.75
c_angle_deg1.1
c_improper_angle_d0.85
c_bond_d0.006
c_bond_d_na
c_bond_d_prot
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d21.9
c_mcangle_it6.5
c_scangle_it5.36
c_mcbond_it4.98
c_scbond_it3.75
c_angle_deg1.1
c_improper_angle_d0.85
c_bond_d0.006
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms6232
Nucleic Acid Atoms
Solvent Atoms197
Heterogen Atoms91

Software

Software
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing