4I9W

Human two pore domain K+ channel TRAAK (K2P4.1) - Fab complex structure


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1ORSPDB ENTRIES 1ORS and 3UM7
experimental modelPDB 3UM7PDB ENTRIES 1ORS and 3UM7

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP8.527750 mM Tris pH 8.5, 200 mM CaCl2, 27-30% PEG400, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Crystal Properties
Matthews coefficientSolvent content
3.4163.88

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 80.887α = 90
b = 138.905β = 94.87
c = 97.461γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARMOSAIC 300 mm CCD2012-07-11MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 23-ID-B1.03318APS23-ID-B

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
12.7548.699.60.07720.14.25543155209
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.752.895.83.92631

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (All)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 ENTRIES 1ORS and 3UM72.7548.615562355167279799.180.202640.202640.200850.23564RANDOM110.435
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]
-0.422.14-3.143.33
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg33.476
r_dihedral_angle_4_deg16.8
r_dihedral_angle_3_deg15.556
r_dihedral_angle_1_deg6.858
r_angle_refined_deg1.01
r_angle_other_deg0.631
r_chiral_restr0.058
r_bond_refined_d0.007
r_gen_planes_refined0.007
r_gen_planes_other0.004
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg33.476
r_dihedral_angle_4_deg16.8
r_dihedral_angle_3_deg15.556
r_dihedral_angle_1_deg6.858
r_angle_refined_deg1.01
r_angle_other_deg0.631
r_chiral_restr0.058
r_bond_refined_d0.007
r_gen_planes_refined0.007
r_gen_planes_other0.004
r_bond_other_d0.002
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms10384
Nucleic Acid Atoms
Solvent Atoms153
Heterogen Atoms7

Software

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