3OV7

How the CCA-Adding Enzyme Selects Adenine over Cytosine in Position 76 of tRNA


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7.530020% PEG 4000, 0.2 M tri-lithium citrate, 80 mM ammonium sulfate, 50 mM HEPES, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 300K
Crystal Properties
Matthews coefficientSolvent content
2.7955.9

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 111.393α = 90
b = 216.095β = 90
c = 58.16γ = 90
Symmetry
Space GroupP 21 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 42007-10-12MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS BEAMLINE X251.0NSLSX25

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (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
135099.80.1578.66.73181722
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
33.1299.9

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUT349.511.72752914581000.208360.205140.26723RANDOM67.704
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]
-0.040.13-0.09
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg33.936
r_dihedral_angle_3_deg21.12
r_dihedral_angle_4_deg18.6
r_dihedral_angle_1_deg5.722
r_scangle_it1.77
r_angle_refined_deg1.369
r_scbond_it0.985
r_mcangle_it0.7
r_mcbond_it0.389
r_nbtor_refined0.308
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg33.936
r_dihedral_angle_3_deg21.12
r_dihedral_angle_4_deg18.6
r_dihedral_angle_1_deg5.722
r_scangle_it1.77
r_angle_refined_deg1.369
r_scbond_it0.985
r_mcangle_it0.7
r_mcbond_it0.389
r_nbtor_refined0.308
r_nbd_refined0.211
r_symmetry_vdw_refined0.185
r_symmetry_hbond_refined0.176
r_xyhbond_nbd_refined0.168
r_chiral_restr0.086
r_bond_refined_d0.011
r_gen_planes_refined0.004
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms7284
Nucleic Acid Atoms1440
Solvent Atoms52
Heterogen Atoms77

Software

Software
Software NamePurpose
HKL-2000data collection
PHASESphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling