7PIV

Active Melanocortin-4 receptor (MC4R)- Gs protein complex bound to agonist NDP-alpha-MSH at 2.86 A resolution.


ELECTRON MICROSCOPY
Sample
Ternary complex of the NDP-alpha-MSH activated melanocortin 4 receptor (MC4R) Gs protein complex stabilized by nanobody 35
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles221682
Reported Resolution (Å)2.86
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1 (3SN6, 6W25)
Refinement SpaceREAL
Refinement ProtocolOTHER
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeFEI FALCON III (4k x 4k)
Electron Dose (electrons/Å**2)40
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)800
Maximum Defocus (nm)2000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification96000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONcryoSPARC2.15
IMAGE ACQUISITIONEPU2.8
CTF CORRECTIONcryoSPARC2.15
MODEL FITTINGcryoSPARC
INITIAL EULER ASSIGNMENTcryoSPARC2.15
FINAL EULER ASSIGNMENTcryoSPARC2.15
CLASSIFICATIONcryoSPARC2.15
RECONSTRUCTIONcryoSPARC2.18
MODEL REFINEMENTCoot
MODEL REFINEMENTCCP4 package
MODEL REFINEMENTPHENIX
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION2746119