6XMX

Cryo-EM structure of BCL6 bound to BI-3802


ELECTRON MICROSCOPY

Refinement

RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d20.5229
f_angle_d1.0961
f_chiral_restr0.057
f_bond_d0.0123
f_plane_restr0.0056
Sample
B-cell lymphoma 6 protein (BCL6) filament
Specimen Preparation
Sample Aggregation StateFILAMENT
Vitrification InstrumentLEICA EM GP
Cryogen NameETHANE
Sample Vitrification Details4 ul sample applied twice, blotted 1.3s each time
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles112048
Reported Resolution (Å)3.7
Resolution MethodFSC 0.143 CUT-OFF
Other Detailsas implemented in Relion
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1 (5MW2)
Refinement SpaceREAL
Refinement ProtocolRIGID BODY FIT
Refinement Target
Overall B Value
Fitting Procedure
DetailsReal_space_refine: global minimization, rigid body and adp refinement with target restraints.
Data Acquisition
Detector TypeGATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å**2)63.4
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)-1000
Maximum Defocus (nm)-2500
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification105000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging DetailsData collection in counting mode, using multi shot scheme (4 holes per stage position, 2 shots per hole)
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONcrYOLO
IMAGE ACQUISITIONSerialEM
CTF CORRECTIONCTFFIND
CTF CORRECTIONRELION
MODEL FITTINGCoot0.89
MODEL REFINEMENTPHENIX1.17
INITIAL EULER ASSIGNMENTRELION3.0
FINAL EULER ASSIGNMENTRELION3.0
CLASSIFICATIONRELION3.0
RECONSTRUCTIONRELION3.0
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTIONStandard CTF correction in relion, based on parameters estimated by CTFFIND41610413particles picked with crYOLO