3EAU

Voltage-dependent K+ channel beta subunit 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
3.2161.68

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 113.035α = 90
b = 113.035β = 90
c = 147.013γ = 90
Symmetry
Space GroupI 4 2 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 315mirrors2007-06-16MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS BEAMLINE X29A0.979NSLSX29A

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
11.8250980.0610.0513913.381011425501.5219.3
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
1.821.921000.3960.3466.1710.43784

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (I)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (All)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTpdb entry 1EXB, chain A, beta subunit1.8229.87242541214599.60.1940.1940.1940.206RANDOM26.2
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]
-1.04-1.042.07
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d20.6
c_scangle_it2.81
c_scbond_it1.86
c_mcangle_it1.64
c_angle_deg1.4
c_improper_angle_d1.2
c_mcbond_it1.08
c_bond_d0.016
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2565
Nucleic Acid Atoms
Solvent Atoms178
Heterogen Atoms100

Software

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