ELECTRON MICROSCOPY

Sample

POLYHOOK

Specimen Preperation
Sample Aggregation State 2D ARRAY
Vitrification Instrument HOMEMADE PLUNGER
Cryogen Name ETHANE
Sample Vitrification Details SAMPLES PREPARED AT 4 DEG C PLUNGED INTO LIQUID ETHANE
3D Reconstruction
Reconstruction Method CRYSTALLOGRAPHY
Number of Particles ?
Reported Resolution (Å) 9
Resolution Method DIFFRACTION PATTERN/LAYERLINES
Other Details HELICAL SYMMETRY OPERATORS CAN BE CALCULATED USING RISE PER SUBUNIT 4.226475A ROTATION PER SUBUNIT 23.48758 DEG. DATA USED IN REFINEMENT. RESOLUTION RANGE HIGH 12A, RESOLUTION RANGE LOW 200A, DATA CUTOFF (SIGMA(F)) 1, COMPLETENESS FOR RANGE 100(%) NUMBER OF REFLECTIONS 84. PROTEIN ATOMS 2156
Refinement Type
Symmetry Type HELICAL
Map-Model Fitting and Refinement
ID 1
Refinement Space ?
Refinement Protocol OTHER
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details METHOD--RECIPROCAL SPACE FITTING IN URO
Data Acquisition
Detector Type KODAK SO-163 FILM
Electron Dose (electrons/Å2) 10
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI/PHILIPS CM200FEG
Minimum Defocus (nm) 1300
Maximum Defocus (nm) 2700
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 2.0
Imaging Mode BRIGHT FIELD
Specimen Holder Model .
Nominal Magnification 66000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 200
Imaging Details DATA FROM 262 INDIVIDUAL SEGMENTS OF HOOK IN FINAL MAP.
Imaging Experiment
Task Software Package Version
MODEL FITTING RSRef ?
RECONSTRUCTION Brandeis Helical Package ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details