X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1MICROBATCH290MtDHQase protein was concentrated to 10-15 mg/mL prior to crystallization, using Amicon Ultra MWCO 5 KDa protein concentrators. MtDHQase crystals were grown in 4 uL drops composed of 5-7 mg/mL protein, 15% PEG monomethyl ether 2,000, 0.075 M KBr, 25 mM Tris, 50 mM NaCl, 0.5 mM DTT, 0.5 mM EDTA, pH 7.5 in microbatch plates covered with 5 mL Al s oil, Microbatch, temperature 290K
Crystal Properties
Matthews coefficientSolvent content
2.1542.83

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 96.316α = 90
b = 137.208β = 96.59
c = 146.713γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARMOSAIC 300 mm CCD2008-03-14MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 23-ID-B0.97934APS23-ID-B

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
11.775098.44176635176635-3-3

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 3N592.2550167784885198.430.206360.204790.23612RANDOM43.441
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]
-0.250.210.33-0.03
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg33.252
r_dihedral_angle_3_deg14.404
r_dihedral_angle_4_deg13.442
r_dihedral_angle_1_deg4.435
r_angle_refined_deg0.881
r_scangle_it0.643
r_scbond_it0.362
r_nbtor_refined0.29
r_mcangle_it0.229
r_nbd_refined0.159
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg33.252
r_dihedral_angle_3_deg14.404
r_dihedral_angle_4_deg13.442
r_dihedral_angle_1_deg4.435
r_angle_refined_deg0.881
r_scangle_it0.643
r_scbond_it0.362
r_nbtor_refined0.29
r_mcangle_it0.229
r_nbd_refined0.159
r_symmetry_vdw_refined0.15
r_mcbond_it0.117
r_xyhbond_nbd_refined0.088
r_symmetry_hbond_refined0.077
r_chiral_restr0.054
r_bond_refined_d0.005
r_gen_planes_refined0.003
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms25582
Nucleic Acid Atoms
Solvent Atoms1307
Heterogen Atoms268

Software

Software
Software NamePurpose
HKL-3000data collection
MOLREPphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling