1T1D

CRYSTAL STRUCTURE OF THE TETRAMERIZATION DOMAIN OF THE SHAKER POTASSIUM CHANNEL


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1A68 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
17.524% ISOPROPANOL, .2M MGCL2, .1 M HEPES PH 7.5, 1MM DTT
Crystal Properties
Matthews coefficientSolvent content
2.755

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 59.71α = 90
b = 59.71β = 90
c = 146.86γ = 90
Symmetry
Space GroupI 4 2 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATEMARRESEARCHPT-COATED-MIRROR1998-04-15MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSSRL BEAMLINE BL7-1SSRLBL7-1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (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
11.5125920.04910.25.926768-319.35
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
1.511.5493.70.163.5

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUT1A681.5119.82135592.10.2290.249RANDOM
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]
RMS Deviations
KeyRefinement Restraint Deviation
p_transverse_tor21
p_staggered_tor15.4
p_planar_tor3.2
p_scangle_it2.755
p_mcangle_it2.049
p_scbond_it1.761
p_mcbond_it1.354
p_multtor_nbd0.263
p_singtor_nbd0.177
p_xyhbond_nbd0.138
RMS Deviations
KeyRefinement Restraint Deviation
p_transverse_tor21
p_staggered_tor15.4
p_planar_tor3.2
p_scangle_it2.755
p_mcangle_it2.049
p_scbond_it1.761
p_mcbond_it1.354
p_multtor_nbd0.263
p_singtor_nbd0.177
p_xyhbond_nbd0.138
p_chiral_restr0.126
p_planar_d0.033
p_angle_d0.026
p_plane_restr0.0192
p_bond_d0.011
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms851
Nucleic Acid Atoms
Solvent Atoms108
Heterogen Atoms

Software

Software
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
X-PLORmodel building
REFMACrefinement
X-PLORphasing