5A1A

2.2 A resolution cryo-EM structure of beta-galactosidase in complex with a cell-permeant inhibitor


ELECTRON MICROSCOPY
Sample
ESCHERICHIA COLI BETA- GALACTOSIDASE WITH PETG
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentLEICA EM GP
Cryogen NameETHANE
Sample Vitrification DetailsBLOT FOR 2 SECONDS BEFORE PLUNGING INTO LIQUID ETHANE (LEICA EM GP).
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles41123
Reported Resolution (Å)2.2
Resolution Method
Other DetailsSUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-2984. (DEPOSITION ID: 13171).
Refinement Type
Symmetry TypePOINT
Point SymmetryD2
Data Acquisition
Detector TypeGATAN K2 (4k x 4k)
Electron Dose (electrons/Å**2)45
Imaging Experiment1
Date of Experiment2014-12-15
Temperature (Kelvin)79.7
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)600
Maximum Defocus (nm)2000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification215000
Calibrated Magnification215000
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
RECONSTRUCTIONFREALIGN
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
EACH PARTICLE