5TR1

Cryo-electron microscopy structure of a bovine CLC-K chloride channel, alternate (class 2) conformation


ELECTRON MICROSCOPY

Refinement

RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg28.131
r_long_range_B_refined23.544
r_long_range_B_other23.544
r_scangle_other17.701
r_mcangle_it15.125
r_mcangle_other15.125
r_dihedral_angle_3_deg14.167
r_dihedral_angle_4_deg10.556
r_scbond_it10.314
r_scbond_other10.313
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg28.131
r_long_range_B_refined23.544
r_long_range_B_other23.544
r_scangle_other17.701
r_mcangle_it15.125
r_mcangle_other15.125
r_dihedral_angle_3_deg14.167
r_dihedral_angle_4_deg10.556
r_scbond_it10.314
r_scbond_other10.313
r_mcbond_it9.337
r_mcbond_other9.314
r_dihedral_angle_1_deg5.755
r_angle_refined_deg1.41
r_angle_other_deg0.957
r_chiral_restr0.099
r_bond_refined_d0.008
r_gen_planes_refined0.005
r_bond_other_d0.002
r_gen_planes_other0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded
Sample
A bovine CLC-K channel complexed with a monoclonal antibody fragment (Fab)
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles67475
Reported Resolution (Å)3.95
Resolution MethodFSC 0.143 CUT-OFF
Other Detailsthe indicated resolution was estimated on the primary map using the provided mask including Fab.
Refinement Type
Symmetry TypePOINT
Point SymmetryC2
Map-Model Fitting and Refinement
Id1
Refinement Space
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeGATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)1.8
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)
Maximum Defocus (nm)
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONRELION1.4
CTF CORRECTIONCTFFIND4
MODEL FITTINGCoot0.8.1
MODEL REFINEMENTREFMAC5.8
INITIAL EULER ASSIGNMENTRELION1.4
FINAL EULER ASSIGNMENTRELION1.4
CLASSIFICATIONRELION1.4
RECONSTRUCTIONRELION1.4
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION