7F54

Cryo-EM structure of afamelanotide-MC4R-Gs_Nb35 complex


ELECTRON MICROSCOPY

Refinement

RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d9.948
f_angle_d0.881
f_chiral_restr0.053
f_plane_restr0.006
f_bond_d0.004
Sample
Complex of afamelanotide bound MC4R-Gs protein
Sample Components
Dominant Negative Guanine nucleotide-binding protein G(s) subunit alpha isoforms
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
Nanobody35
melanocrotin-4 receptor
afamelanotide
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification Instrument
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles217491
Reported Resolution (Å)3
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
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)62
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
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION