4XDJ

Crystal structure of human two pore domain potassium ion channel TREK2 (K2P10.1) in an alternate conformation (FORM 2)


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 4BW5 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP6.52770.2M KCl, 0.1M sodium cacodylate pH6.5, 22% (w/v) PEG1500 + 3% (v/v) Methanol
Crystal Properties
Matthews coefficientSolvent content
3.9368.75

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 76.745α = 90
b = 113.871β = 90.97
c = 111.782γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELPSI PILATUS 6M2013-06-27MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONDIAMOND BEAMLINE I240.9686DiamondI24

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
13.838.37990.0710.83.418910129.62
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)
13.83.999.50.8161.83.4

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUT4BW53.837.261889597899.030.26370.26290.2769RANDOM164.38
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]
-29.4201-2.211821.49787.9223
RMS Deviations
KeyRefinement Restraint Deviation
t_other_torsion2.42
t_omega_torsion1.81
t_angle_deg0.9
t_bond_d0.009
t_dihedral_angle_d
t_incorr_chiral_ct
t_pseud_angle
t_trig_c_planes
t_gen_planes
t_it
RMS Deviations
KeyRefinement Restraint Deviation
t_other_torsion2.42
t_omega_torsion1.81
t_angle_deg0.9
t_bond_d0.009
t_dihedral_angle_d
t_incorr_chiral_ct
t_pseud_angle
t_trig_c_planes
t_gen_planes
t_it
t_nbd
t_improper_torsion
t_chiral_improper_torsion
t_sum_occupancies
t_utility_distance
t_utility_angle
t_utility_torsion
t_ideal_dist_contact
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms6959
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms99

Software

Software
Software NamePurpose
BUSTERrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing