4E2W

X-ray Structure of the H181N mutant of TcaB9, a C-3'-Methyltransferase, in Complex with S-Adenosyl-L-Homocysteine and Sugar Product


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 3NDJPDB ENTRY 3NDJ

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP82981.2-1.6 M sodium/potassium phosphate, 10 mM dTMP, 5 mM S-adenosyl-L-homocysteine, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal Properties
Matthews coefficientSolvent content
2.3748.19

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 100.631α = 90
b = 114.891β = 90
c = 37.839γ = 90
Symmetry
Space GroupP 21 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDBruker Platinum 135Montel2011-03-25MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RU2001.54178

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
11.53897.90.0840.08411.24.77173270194
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)
11.51.690.60.2910.2912.771.9611310

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-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 3NDJ1.5387018966622356798.140.19050.188520.22767RANDOM12.769
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]
-0.57-0.320.9
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg35.468
r_dihedral_angle_4_deg18.641
r_dihedral_angle_3_deg13.003
r_dihedral_angle_1_deg6.232
r_scangle_it5.718
r_scbond_it3.742
r_mcangle_it2.468
r_angle_refined_deg2.282
r_mcbond_it1.685
r_chiral_restr0.158
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg35.468
r_dihedral_angle_4_deg18.641
r_dihedral_angle_3_deg13.003
r_dihedral_angle_1_deg6.232
r_scangle_it5.718
r_scbond_it3.742
r_mcangle_it2.468
r_angle_refined_deg2.282
r_mcbond_it1.685
r_chiral_restr0.158
r_bond_refined_d0.01
r_gen_planes_refined0.009
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3153
Nucleic Acid Atoms
Solvent Atoms441
Heterogen Atoms74

Software

Software
Software NamePurpose
PROTEUM PLUSdata collection
PHASERphasing
REFMACrefinement
SAINTdata reduction
SADABSdata scaling