EMPIAR-10343
CryoEM dataset containing multiple conformations of the asymmetric αVβ8 integrin bound to latent TGF-β on a holey carbon grid (strongly preferred orientations) [multiple data sets in TIFF, MRC and MRCS formats]
Publication:

Cryo-EM Reveals Integrin-Mediated TGF-β Activation without Release from Latent TGF-β

Campbell MG, Cormier A, Ito S, Seed RI, Bondesson AJ, Lou J, Marks JD, Baron J, Cheng Y, Nishimura SL

Cell (2020)

PMID: 31955848

Deposited:
2019-10-23
Released:
2020-01-31
Last modified:
2020-04-24
Imageset size:
1.25 TB
Imageset DOI:
Experimental metadata:
Download xml json
Contains:
  • micrographs - multiframe
  • micrographs - single frame
  • picked particles - single frame - processed
1. Unaligned 80-frame movies of αVβ8 integrin bound to latent TGF-β on a holey carbon grid
Category:
micrographs - multiframe
Image format:
TIFF
No. of images or tilt series:
1684
Image size:
(7676, 7420)
Pixel type:
UNSIGNED BYTE
Pixel spacing:
(0.6725, 0.6725)
Details:
αVβ8 integrin bound to latent TGF-β on holey carbon grids (particles have strongly preferred orientations): 1684 unaligned uncorrected movies were recorded automatically using SerialEM on a K2 camera in super-resolution (dstep=2.5) mode on a Titan Krios microscope operated at 300 kV (Cs=2.7) equipped with an energy filter using a slit width of 20 eV. The 16 second movies contain 80 frames and the super resolution pixel size is 0.6725 Å/px. The total dose per movie is ~70 e/Å^2. The gain reference, a file containing coordinates for a single dead column, and a list of the 1364 micrographs that were used for downstream processing are included.
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2. Dose-weighted aligned micrographs of αVβ8 integrin bound to latent TGF-β on a holey carbon grid
Category:
micrographs - single frame
Image format:
MRC
No. of images or tilt series:
1684
Image size:
(3838, 3710)
Pixel type:
32 BIT FLOAT
Pixel spacing:
(1.345, 1.345)
Details:
αVβ8 integrin bound to latent TGF-β on holey carbon grids (particles have strongly preferred orientations): 1684 aligned and dose-weighted (in MotionCor2) micrographs recorded automatically using SerialEM on a K2 camera (dstep=5) in super-resolution mode on a Titan Krios microscope operated at 300 kV (Cs=2.7) equipped with an energy filter using a slit width of 20 eV. Images were binned by 2 using Fourier cropping and the binned pixel size is 1.345. The total dose per micrograph is ~70 e/Å^2. A list of the 1364 micrographs that were used for downstream processing is included.
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3. Dose-weighted aligned particle stacks of αVβ8 integrin bound to latent TGF-β on a holey carbon grid
Category:
picked particles - single frame - processed
Image format:
MRCS
No. of images or tilt series:
68356
Image size:
(300, 300)
Pixel type:
32 BIT FLOAT
Pixel spacing:
(1.345, 1.345)
Details:
αVβ8 integrin bound to latent TGF-β on holey carbon grids (particles have strongly preferred orientations): Stacks of 68,356 dose-weighted (in MotionCor2) particles contributing to the seven conformational snapshots described in the publication . Particles were selected after extensive 2D- and 3D classification. Images were recorded automatically using SerialEM on a K2 camera (dstep=5) in super-resolution mode on a Titan Krios microscope operated at 300 kV (Cs=2.7) equipped with an energy filter using a slit width of 20 eV. Images were binned by 2 using Fourier cropping and the binned pixel size is 1.345. This particle stack was combined with a stack of particles collected on graphene oxide to complement preferred orientations. The graphene oxide particle stack is deposited with the accession number EMPIAR-10344.
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