2CMN

A Proximal Arginine Residue in the Switching Mechanism of the FixL Oxygen Sensor


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP8277CRYSTALS OF THE MET-R206A BJFIXLH MUTANT WERE OBTAINED AT 4 DEGREES C VIA THE HANGING-DROP VAPOR-DIFFUSION METHOD BY MIXING EQUAL AMOUNTS OF PROTEIN (0.6-1.2 MM IN 5.0 MM TRIS-HCL, PH 8.0) AND WELL SOLUTION (50 MM HEPES, 4.5 M NACL, 5% (V/) 2-METHYL-2,4-PENTANEDIOL, PH 7.5) AND INCUBATING THE DROP OVER 0.7 ML OF WELL SOLUTION.
Crystal Properties
Matthews coefficientSolvent content
3.2561.89

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 127.117α = 90
b = 127.117β = 90
c = 58.569γ = 120
Symmetry
Space GroupH 3 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDCUSTOM2003-10-20MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 19-BMAPS19-BM

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge 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
12.327.0799.90.0636.27.48187-3
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.32.341000.742.96.3

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 1LSW2.320756561199.90.1970.1950.22RANDOM41.23
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]
0.450.220.45-0.67
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg31.8
r_dihedral_angle_4_deg18.68
r_dihedral_angle_3_deg16.975
r_scangle_it2.476
r_dihedral_angle_1_deg2.006
r_angle_refined_deg1.693
r_scbond_it1.69
r_mcangle_it1.093
r_mcbond_it0.721
r_nbtor_refined0.301
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg31.8
r_dihedral_angle_4_deg18.68
r_dihedral_angle_3_deg16.975
r_scangle_it2.476
r_dihedral_angle_1_deg2.006
r_angle_refined_deg1.693
r_scbond_it1.69
r_mcangle_it1.093
r_mcbond_it0.721
r_nbtor_refined0.301
r_symmetry_hbond_refined0.209
r_nbd_refined0.189
r_symmetry_vdw_refined0.18
r_xyhbond_nbd_refined0.11
r_chiral_restr0.109
r_bond_refined_d0.012
r_gen_planes_refined0.009
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_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms924
Nucleic Acid Atoms
Solvent Atoms33
Heterogen Atoms43

Software

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