7SHT

Structure of a partially disrupted IgE high affinity receptor complex bound to an omalizumab variant


ELECTRON MICROSCOPY
Sample
Locked complex of IgE-Fc (G335C) and alpha chain of the high affinity IgE receptor (W156C) bound to clone_7 scFV
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification Instrument
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles24396
Reported Resolution (Å)7.29
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Map-Model Fitting and Refinement
Id1 (1F6A, 1F6A, 4J4P)
Refinement Space
Refinement ProtocolFLEXIBLE FIT
Refinement Target
Overall B Value
Fitting Procedure
DetailsInitial local fitting done in Chimera, followed by auto dock, and a single round of real space refinement. Carbohydrates were automatically built in p ...Initial local fitting done in Chimera, followed by auto dock, and a single round of real space refinement. Carbohydrates were automatically built in phenix when possible, and a handful of flagged outliers in geometry were fixed manually in Phenix.
Data Acquisition
Detector TypeGATAN K3 (6k x 4k)
Electron Dose (electrons/Å**2)44
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelTFS 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
CTF CORRECTIONcryoSPARC
MODEL FITTINGPHENIX
RECONSTRUCTIONcryoSPARC
MODEL REFINEMENTPHENIX
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION