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Formoterol-bound beta1-adrenoceptor coupled to beta-arrestin-1 stabilised by Fab30.
Sample Components
Beta-1 adrenergic receptor
Beta-arrestin-1
Fab30 heavy chain
Fab30 light chain
Specimen Preparation
Sample Aggregation State
PARTICLE
Vitrification Instrument
FEI VITROBOT MARK IV
Cryogen Name
ETHANE
Sample Vitrification Details
Blotted for 2-3 seconds before plunging. Liquid ethane maintained at 92.15 K.
3D Reconstruction
Reconstruction Method
SINGLE PARTICLE
Number of Particles
403991
Reported Resolution (Å)
3.3
Resolution Method
FSC 0.143 CUT-OFF
Other Details
Half maps were locally filtered between refinement iterations using SIDESPLITTER, an adaptation of the LAFTER algorithm that maintains gold-standard s ...
Half maps were locally filtered between refinement iterations using SIDESPLITTER, an adaptation of the LAFTER algorithm that maintains gold-standard separation between the two half maps.
Refinement Type
Symmetry Type
POINT
Point Symmetry
C1
Map-Model Fitting and Refinement
Id
1 (6IBL, 4JQI, 4JQI, 4JQI, 4JQI)
Refinement Space
REAL
Refinement Protocol
OTHER
Refinement Target
Correlation coefficient
Overall B Value
80.6
Fitting Procedure
Details
Initial placement was done manually in Coot, followed by rigid-body refinement in PHENIX and jelly-body refinement in REFMAC5. Manual remodeling was p ...
Initial placement was done manually in Coot, followed by rigid-body refinement in PHENIX and jelly-body refinement in REFMAC5. Manual remodeling was performed in Coot and iterated with real space refinement in PHENIX. Chemical restraints for formoterol were calculated in eLBOW using AM1 optimisation.
Data Acquisition
Detector Type
GATAN K2 QUANTUM (4k x 4k)
GATAN K2 QUANTUM (4k x 4k)
Electron Dose (electrons/Å**2)
50
45
Imaging Experiment
1
2
Date of Experiment
Temperature (Kelvin)
Microscope Model
FEI TITAN KRIOS
FEI TITAN KRIOS
Minimum Defocus (nm)
1200
1200
Maximum Defocus (nm)
3000
3000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
2.7
2.7
Imaging Mode
BRIGHT FIELD
BRIGHT FIELD
Specimen Holder Model
FEI TITAN KRIOS AUTOGRID HOLDER
FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification
105000
130000
Calibrated Magnification
Source
FIELD EMISSION GUN
FIELD EMISSION GUN
Acceleration Voltage (kV)
300
300
Imaging Details
Data collected with a stage-tilt of 30deg; two non-overlapping exposures per hole and multi-hole image-shift data acquisition strategies (3x3 holes per stage shift).
Data collected with a stage-tilt of 30deg; two non-overlapping exposures per hole using image-shift.