1U6B

CRYSTAL STRUCTURE OF A SELF-SPLICING GROUP I INTRON WITH BOTH EXONS


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
16.8pH 6.80
Crystal Properties
Matthews coefficientSolvent content
4.472.06

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 108.541α = 90
b = 108.541β = 90
c = 249.158γ = 90
Symmetry
Space GroupP 41 2 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 42003-07-20MMAD
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS BEAMLINE X25NSLSX25

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (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
13.15024640

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (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 DIFFRACTIONMADTHROUGHOUT3.148.2223553108689.560.247120.245720.27867RANDOM80.422
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]
0.60.6-1.19
RMS Deviations
KeyRefinement Restraint Deviation
r_scangle_it4.28
r_dihedral_angle_1_deg3.257
r_scbond_it2.425
r_mcangle_it2.136
r_angle_refined_deg1.333
r_mcbond_it1.158
r_nbd_refined0.188
r_xyhbond_nbd_refined0.176
r_symmetry_vdw_refined0.154
r_metal_ion_refined0.139
RMS Deviations
KeyRefinement Restraint Deviation
r_scangle_it4.28
r_dihedral_angle_1_deg3.257
r_scbond_it2.425
r_mcangle_it2.136
r_angle_refined_deg1.333
r_mcbond_it1.158
r_nbd_refined0.188
r_xyhbond_nbd_refined0.176
r_symmetry_vdw_refined0.154
r_metal_ion_refined0.139
r_symmetry_hbond_refined0.131
r_chiral_restr0.107
r_bond_refined_d0.006
r_gen_planes_refined0.004
r_bond_other_d
r_angle_other_deg
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg
r_dihedral_angle_4_deg
r_gen_planes_other
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms775
Nucleic Acid Atoms4768
Solvent Atoms54
Heterogen Atoms18

Software

Software
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
MLPHAREphasing
REFMACrefinement
HKL-2000data reduction