9J4C | pdb_00009j4c

Cryo-EM structure of aPlexinA1-19-43 Fab in complex with PlexinA1 dimer


ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 5L59 
in silico modelAlphaFold 
Sample
Dimer complex of Human Plexin-A1 27-710 with aPlexinA1-19-43 Fab binding
Sample Components
Dimer of Human Plexin-A1 27-710
aPlexinA1-19-43 Fab
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification DetailsTo prepare cryo-grids, 3 ul samples were applied to glow discharged Quantifoil Au grids (R2/2, 300 mesh), which were subsequently blotted with filter ...To prepare cryo-grids, 3 ul samples were applied to glow discharged Quantifoil Au grids (R2/2, 300 mesh), which were subsequently blotted with filter paper (Ted Pella) for 3 seconds at 18oC and 100% humidity. The grids were immediately plunge frozen in liquid ethane using a FEI Vitrobot IV (ThermoFisher)
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles253734
Reported Resolution (Å)3.33
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Map-Model Fitting and Refinement
Id1 (5L59)
Refinement SpaceREAL
Refinement ProtocolAB INITIO MODEL
Refinement Target
Overall B Value
Fitting Procedure
DetailsInitial local fitting was done using Chimera X, followed by manual fitting using Coot. Finally it was refined using Phenix real space refinement
Data Acquisition
Detector TypeFEI FALCON III (4k x 4k)
Electron Dose (electrons/Å**2)50
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)1200
Maximum Defocus (nm)2500
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging ModeOTHER
Specimen Holder Model
Nominal Magnification
Calibrated Magnification
SourceOTHER
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONcryoSPARC4.1.2
CTF CORRECTIONcryoSPARC4.1.2
MODEL FITTINGUCSF ChimeraX
MODEL FITTINGCoot0.9.8.7
INITIAL EULER ASSIGNMENTcryoSPARC4.1.2
FINAL EULER ASSIGNMENTcryoSPARC4.1.2
CLASSIFICATIONcryoSPARC4.1.2
RECONSTRUCTIONcryoSPARC4.1.2
MODEL REFINEMENTPHENIX1.21
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION3741859After Inspect Particle Picks (NCC score > 0.620, 10421 < local power score < 17132) and Extract From Micrographs (Extraction box size 320 pix), a total of 3,741,859 particles were extracted