5MKE

cryoEM Structure of Polycystin-2 in complex with cations and lipids


ELECTRON MICROSCOPY

Refinement

RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d12.407
f_angle_d1.155
f_chiral_restr0.069
f_bond_d0.009
f_plane_restr0.007
Sample
Polycystin-2
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification Instrument
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles42268
Reported Resolution (Å)4.3
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Point SymmetryC4
Map-Model Fitting and Refinement
Id1
Refinement Space
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
DetailsWe used for comparative structure modeling TRPA1 (pdb entry code 3J9P) as template for S1 and S3-S5, TRPV1 (pdb entry code 3J5Q) for S5-S6, and the TR ...We used for comparative structure modeling TRPA1 (pdb entry code 3J9P) as template for S1 and S3-S5, TRPV1 (pdb entry code 3J5Q) for S5-S6, and the TRPV2 (pdb entry code 5AN8) fitted best for S2-S3 to obtain an initial model. The soluble domain was build based on pdbID: 5K47. But we had no search model for molecular replacement. Although we had a good idea what the architecture would be like, we build the model de novo with COOT.
Data Acquisition
Detector TypeGATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)1.8
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelJEOL 3200FSC
Minimum Defocus (nm)
Maximum Defocus (nm)
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS4.1
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION