EMD-2110 Experiments and Validation

Negative structure of open and closed conformation of crm1

Single particle reconstruction
Overview of EMD-2110
Sample name: crm1 open conformation
Organism: Chaetomium thermophilum
Related EM entry by publication: EMD-2111

Map parameters

Recommended contour level: 0.035 (emdb)
Number of grid points: 54 × 54 × 54
Voxel size: 3.70 × 3.70 × 3.70 Å
Minimum density: -0.202
Maximum density: 1.146
Average density: 0.004
Standard deviation: 0.044

Sample information

Sample name: crm1 open conformation
Protein: crm1

Validation information

Experimental information


Image processing

Applied symmetry: C1
Software: imagic
Number of particles: 21000
Reconstruction protocol: Cross-common-lines
CTF correction: each particle


Microscope model: FEI/PHILIPS CM200FEG
Electron source: FIELD EMISSION GUN
Nominal magnification: 155000.0
Holder model: OTHER
Number of images: 300


Specimen state: particle
Buffer: 150 mM NaCl, 20 mM HEPES/NaOH pH 7.5, 2 mM MgCl2, 4 mM DTT
Staining procedure: Grids with adsorbed protein floated on 1% w/v uranyl formate for 60 seconds
Specimen support: 200 mesh copper grid with thin carbon support, freshly floated on protein solution
Apparatus: NONE
Cryogen: NONE