6NE3

Cryo-EM structure of singly-bound SNF2h-nucleosome complex with SNF2h bound at SHL-2


ELECTRON MICROSCOPY

Refinement

RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d23.382
f_angle_d0.781
f_chiral_restr0.055
f_bond_d0.005
f_plane_restr0.004
Sample
Cryo-EM structure of singly-bound SNF2h-nucleosome complex with SNF2h bound at the flanking DNA proximal side
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK I
Cryogen NameETHANE
Sample Vitrification Details2.5 ul of nucleosome-443 SNF2h complexes were applied to a glow discharged Quantifoil holey carbon grid (1.2 um hole size, 400 mesh), blo ...2.5 ul of nucleosome-443 SNF2h complexes were applied to a glow discharged Quantifoil holey carbon grid (1.2 um hole size, 400 mesh), blotted in a Vitrobot Mark I (FEI Company) using 6 seconds blotting at 100% humidity, and then plunge-frozen in liquid ethane cooled by liquid nitrogen.
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles27513
Reported Resolution (Å)3.9
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Map-Model Fitting and Refinement
Id1
Refinement SpaceREAL
Refinement ProtocolFLEXIBLE FIT
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeGATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)41
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI POLARA 300
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 CORRECTION95879