EMPIAR-13093
CryoEM of mycobacterial open-gate proteasome complexed with engineered bacterial enhancer binding protein (bEBP) [multiple data sets in TIFF and MRC formats]
Publication:

Real-time capture of σN transcription initiation intermediates reveals mechanism of ATPase-driven activation by limited unfolding

Mueller AU, Molina N, Nixon BT, Darst SA

Nature communications 16 (2025)

PMID: 40759887

Related EMDB entry:
Deposited:
2025-10-14
Released:
2025-12-05
Last modified:
2025-12-05
Imageset size:
479.42 GB
Imageset DOI:
Experimental metadata:
Download xml json
Contains:
  • micrographs - multiframe
  • micrographs - single frame
  • picked particles - single frame - processed
1. Unaligned multi-frame micrographs of an engineered bEBP-proteasome complex (0 degree tilt)
Category:
micrographs - multiframe
Image format:
TIFF
No. of images or tilt series:
503
Image size:
(3710, 3838)
Pixel type:
UNSIGNED BYTE
Pixel spacing:
(1.5, 1.5)
Details:
Raw micrographs were collected on a Talos Arctica at 200kV equipped with a Gatan K2 camera. Recordings were performed in counting mode at a pixel size of 1.5 A/px with a dose rate of 8.4 electrons/px/s for an exposure time of 12 seconds in dose-fraction mode of 0.3 seconds per-frame resulting in a total of 40 frames and 1.12 electrons/A^2/frame (total dose of 44.8 electrons/A^2). Defocus range for the collection was -0.8 to -3.0 microns. The tilt angle of the specimen was 0 degrees.
Files:
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2. Unaligned multi-frame micrographs of an engineered bEBP-proteasome complex (20 degree tilt)
Category:
micrographs - multiframe
Image format:
TIFF
No. of images or tilt series:
466
Image size:
(3710, 3838)
Pixel type:
UNSIGNED BYTE
Pixel spacing:
(1.5, 1.5)
Details:
Raw micrographs were collected on a Talos Arctica at 200kV equipped with a Gatan K2 camera. Recordings were performed in counting mode at a pixel size of 1.5 A/px with a dose rate of 9.2 electrons/px/s for an exposure time of 12 seconds in dose-fraction mode of 0.3 seconds per-frame resulting in a total of 40 frames and 1.227 electrons/A^2/frame (total dose of 49.1 electrons/A^2). Defocus range for the collection was -1 to -2.5 microns. The tilt angle of the specimen was 20 degrees.
Files:
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3. Aligned single-frame micrographs of an engineered bEBP-proteasome complex (0 degree tilt)
Category:
micrographs - single frame
Image format:
MRC
No. of images or tilt series:
503
Image size:
(3710, 3838)
Pixel type:
UNSIGNED BYTE
Pixel spacing:
(1.5, 1.5)
Details:
0 degree tilt data. Raw movies of were aligned using MotionCor2 (through Relion) with a binning factor of 1 and a dose of 1.12 electrons/A^2/frame. Full job output is provided in the upstream directory.
Files:
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4. Aligned single-frame micrographs of an engineered bEBP-proteasome complex (20 degree tilt)
Category:
micrographs - single frame
Image format:
MRC
No. of images or tilt series:
466
Image size:
(3710, 3838)
Pixel type:
UNSIGNED BYTE
Pixel spacing:
(1.5, 1.5)
Details:
20 degree tilt data. Raw movies of were aligned using MotionCor2 (through Relion) with a binning factor of 1 and a dose of 1.227 electrons/A^2/frame. Full job output is provided in the upstream directory.
Files:
Loading...
5. Particle images of an engineered bEBP-proteasome complex (0 degree tilt)
Category:
picked particles - single frame - processed
Image format:
MRC
No. of images or tilt series:
308092
Image size:
(288, 288)
Pixel type:
UNSIGNED BYTE
Pixel spacing:
(1.5, 1.5)
Details:
0 degree tilt data. Number of frames per file is variable (0 was chosen as placeholder). Number of images indicates the total number of particle images across all files.
Files:
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6. Particle images of an engineered bEBP-proteasome complex (20 degree tilt)
Category:
picked particles - single frame - processed
Image format:
MRC
No. of images or tilt series:
283067
Image size:
(288, 288)
Pixel type:
UNSIGNED BYTE
Pixel spacing:
(1.5, 1.5)
Details:
20 degree tilt data. Number of frames per file is variable (0 was chosen as placeholder). Number of images indicates the total number of particle images across all files.
Files:
Loading...
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