3EB4

Voltage-dependent K+ channel beta subunit (I211R) in complex with cortisone


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1EXBpdb entry 1EXB, chain A, beta subunit

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP2936-15% glycerol, 1.5 M ammonium sulfate, 0.1 M Tris, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Crystal Properties
Matthews coefficientSolvent content
3.2261.85

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 113.26α = 90
b = 113.26β = 90
c = 147.266γ = 90
Symmetry
Space GroupI 4 2 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATEMAR scanner 345 mm plate2007-08-26MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS BEAMLINE X4C0.97893NSLSX4C

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
11.95501000.0640.04535.6610.6351981.5216.3
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)
1.952.021000.464.489.43063

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (I)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 DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTpdb entry 1EXB, chain A, beta subunit240.04223440531907161497.60.2230.2230.256RANDOM29.4
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]
-0.85-0.851.7
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d20.4
c_scangle_it2.8
c_scbond_it1.9
c_mcangle_it1.83
c_mcbond_it1.24
c_angle_deg1.2
c_improper_angle_d0.91
c_bond_d0.007
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2568
Nucleic Acid Atoms
Solvent Atoms161
Heterogen Atoms74

Software

Software
Software NamePurpose
MAR345dtbdata collection
CNSrefinement
HKL-2000data reduction
SCALEPACKdata scaling
CNSphasing