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Double octamer structure of retinoschisin, a cell-cell adhesion protein of the retina
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1SDD
Sample Purified Retinoschisin: residues 24-224 + 6xHis
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument LEICA EM GP Cryogen Name ETHANE Sample Vitrification Details Ambient temperature 23 degrees C. Plunged into liquid ethane (LEICA EM GP).
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 9096 Reported Resolution (Å) 4.1 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry D8
Map-Model Fitting and Refinement Id 1 (1SDD) Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target FSC(0.5) = 4.7 Overall B Value Fitting Procedure Details METHOD--Flexible fitting REFINEMENT PROTOCOL--FLEXIBLE
Data Acquisition Detector Type GATAN K2 (4k x 4k) Electron Dose (electrons/Å**2) 30
Imaging Experiment 1 Date of Experiment 2014-06-03 Temperature (Kelvin) Microscope Model FEI POLARA 300 Minimum Defocus (nm) Maximum Defocus (nm) Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2 Imaging Mode BRIGHT FIELD Specimen Holder Model OTHER Nominal Magnification 39000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details 10 frames over 3 seconds
EM Software Task Software Package Version MODEL FITTING Coot MODEL FITTING Foldit MODEL FITTING MDFF RECONSTRUCTION EMAN 2 RECONSTRUCTION RELION
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details Included in iterative refinement