2Y7H
Atomic model of the DNA-bound methylase complex from the Type I restriction-modification enzyme EcoKI (M2S1). Based on fitting into EM map 1534.
ELECTRON MICROSCOPY
Sample |
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M.ECOKI WITH DNA |
Specimen Preparation | |
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Sample Aggregation State | PARTICLE |
Staining Type | NEGATIVE |
Staining Material | Uranyl Acetate |
Staining Details |
3D Reconstruction | |
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Reconstruction Method | SINGLE PARTICLE |
Number of Particles | 17807 |
Reported Resolution (Å) | 18 |
Resolution Method | |
Other Details | HSDM N-TERMINAL DOMAIN RETRACED FROM PDB ENTRY 2AR0. DISORDERED C-TERMINUS OF HSDM MODELLED INTO DENSITY. |
Refinement Type | |
Symmetry Type | POINT |
Point Symmetry | C2 |
Map-Model Fitting and Refinement | |||||
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Id | 1 (1S7Z, 1YF2, 2AR0) | ||||
Refinement Space | REAL | ||||
Refinement Protocol | RIGID BODY FIT | ||||
Refinement Target | |||||
Overall B Value | |||||
Fitting Procedure | |||||
Details | METHOD--UROX REFINEMENT PROTOCOL--RIGID BODY |
Data Acquisition | |||||||||
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Detector Type | KODAK SO-163 FILM | ||||||||
Electron Dose (electrons/Å**2) | 25 |
Imaging Experiment | 1 |
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Date of Experiment | 2008-02-01 |
Temperature (Kelvin) | 294 |
Microscope Model | JEOL 1200EX |
Minimum Defocus (nm) | 275 |
Maximum Defocus (nm) | 870 |
Minimum Tilt Angle (degrees) | |
Maximum Tilt Angle (degrees) | |
Nominal CS | 2 |
Imaging Mode | BRIGHT FIELD |
Specimen Holder Model | |
Nominal Magnification | 40000 |
Calibrated Magnification | 39500 |
Source | TUNGSTEN HAIRPIN |
Acceleration Voltage (kV) | 80 |
Imaging Details |
EM Software | ||
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Task | Software Package | Version |
MODEL FITTING | Situs | |
MODEL FITTING | UCSF Chimera | |
MODEL FITTING | URO | |
RECONSTRUCTION | EMAN | |
RECONSTRUCTION | IMAGIC | |
RECONSTRUCTION | MRC IMAGE PROCESSING PACKAGE |
Image Processing | ||||
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CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
FILTERED AT FIRST ZERO |