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The cryoEM structure of human gamma-Secretase complex
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4R12
Sample T4-LYSOZYME FUSION GAMMA- SECRETASE
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details VITRIFICATION 1 -- CRYOGEN- ETHANE, HUMIDITY- 100, TEMPERATURE- 277, INSTRUMENT- FEI VITROBOT MARK IV, METHOD- BLOT FOR 3 SECONDS BEFORE PLUNGING,
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 177207 Reported Resolution (Å) 4.4 Resolution Method Other Details SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-2974. (DEPOSITION ID: 13293 Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (4R12) Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value Fitting Procedure Details METHOD--FLEXIBLE
Data Acquisition Detector Type DIRECT ELECTRON DE-12 (4k x 3k) Electron Dose (electrons/Å**2) 4.5
Imaging Experiment 1 Date of Experiment 2014-12-22 Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1500 Maximum Defocus (nm) 3000 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 1.4 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version MODEL FITTING UCSF Chimera RECONSTRUCTION RELION