3EB3

Voltage-dependent K+ channel beta subunit (W121A) 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
3.2261.83

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 113.198α = 90
b = 113.198β = 90
c = 146.691γ = 90
Symmetry
Space GroupI 4 2 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 42007-06-22MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS BEAMLINE X4A0.97935NSLSX4A

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
1250990.0540.0452.413.3325641.5217
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)
22.071000.3149.311.93197

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (I)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 subunit244.89232564321591628990.2220.2220.249RANDOM29.6
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]
-1.03-1.032.07
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d20.6
c_mcangle_it2.97
c_scangle_it2.6
c_mcbond_it1.96
c_scbond_it1.78
c_angle_deg1.1
c_improper_angle_d0.8
c_bond_d0.007
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2549
Nucleic Acid Atoms
Solvent Atoms134
Heterogen Atoms74

Software

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