3B5A

Crystal Structure of a Minimally Hinged Hairpin Ribozyme Incorporating A38G mutation with a 2'OMe modification at the active site


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 2OUE 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP8.6293PEG 2K MME, lithium sulfate, Tris, spermidine, cobalt hexaammine, pH 8.6, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties
Matthews coefficientSolvent content
4.1978

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 93.56α = 90
b = 93.56β = 90
c = 131.66γ = 120
Symmetry
Space GroupP 61 2 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 210BENT TRIANGULAR ASYMMETRIC CUT SI(111) MONOCHROMATOR (PROVIDES HORIZONTAL FOCUSSING), RH-COATED SI MIRROR FOR VERTICAL FOCUSSING2006-09-30MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONCHESS BEAMLINE A10.977CHESSA1

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
12.3544.0899.10.05325.611.71477814645115.2
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.352.4399.40.04793.991416

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)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 DIFFRACTIONFOURIER SYNTHESISTHROUGHOUT2OUE2.3538.13-31477814614131498.80.2180.2160.238RANDOM75.1
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]
-8.33-7.51-8.3316.67
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d17.9
c_improper_angle_d1.8
c_angle_deg1.4
c_bond_d0.008
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms
Nucleic Acid Atoms1312
Solvent Atoms10
Heterogen Atoms19

Software

Software
Software NamePurpose
Adxvdata processing
CNSrefinement
CrystalCleardata reduction
CrystalCleardata scaling
CNSphasing