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EMBL Imaging Centre

Open access to cutting-edge electron and light microscopy

We provide researchers from Europe and beyond with a synergistic portfolio of imaging services including cryo-EM, super-resolution and intravital microscopy to enable new ground-breaking research that crosses the scales of biology.

General Info

The EMBL Imaging Centre in collaboration with the Heidelberg University is offering a 5-day autumn school (7 – 11 October 2024) covering all aspects of the single particle cryoEM workflow. The autumn school will focus on basics of the workflow aimed at PhD students and early career researchers with no or limited experience in single particle cryoEM.

Content of the course:

  • Theoretical background and practicals delivered by experts in the field
  • Sample preparation, grid screening and high-end data collection
  • Image processing and data analysis

External invited speaker:

Hauke Hillen

University Medical Center Göttingen / MPI for Multidisciplinary Sciences

Organisers:

Contact:

Simon Fromm (simon.fromm@embl.de)

To participate to the autumn school please register by clicking on the following button. Participation is limited to 8 participants. Deadline for registration is August 9th 2024.

Selected participants will be announced by August 16th 2024.

Sponsors:

Lecture/Practical Content

Lectures:

  1. Dirk Flemming (Heidelberg University): Sample and grid preparation for single particle cryoEM. This lecture will discuss general considerations about suitable samples for single particle cryoEM as well as grid preparation.
  2. Cristina Paulino (Heidelberg University): The transmission electron microscope. This lecture will cover basics about the instrument itself with a focus on relevant aspects for its use in single particle cryoEM data acquisition.
  3. Jan Rheinberger (Heidelberg University): Single particle data acquisition. General workflow of single particle data acquisition with a focus on practical considerations for microscope operations.
  4. Simon Fromm (EMBL): Single particle data analysis. General workflow and concepts of single particle data processing and introduction to the processing software used in the practical.
  5. Hauke Hillen (University Medical Center Göttingen): Single-particle cryo-EM of organellar and viral gene expression machineries. The lecture will present recent scientific breakthroughs where single-particle cryoEM has been employed.

Practicals:

Practical 1: Sample preparation (Plunge freezing and jet vitrification)

To collect single particle cryoEM data on a cryo-TEM, the biochemically pure sample needs to be embedded into a thin layer of vitrified buffer solution. This is achieved by rapidly plunge or jet freezing the sample after it has been applied onto a support called EM grid.

For this process, different instruments, instrument settings and sample supports (EM grids) can be used to optimize the result. In the practical, different test samples will be vitrified demonstrating the effect of varying those parameters.

The participants will have the opportunity to use:

  • Vitrobot Mark 4 (Thermo Fischer Scientific), plunge freezer generating a gradient of ice thickness
  • EM GP2 (Leica Microsystems), plunge freezer for single-side blotting

Practical 2: Sample loading and screening with a 200 kV cryo-TEM

After sample vitrification the EM grid is introduced into the cryo-TEM to evaluate the grid preparation. As it is impossible to predict ideal grid preparation settings, it is important to screen differently prepared grids. Modern cryo-TEMs with a so-called autoloader can take up to 12 grids which can then be screened consecutively without need to manually change the sample. For this, grids prepared in the first practical have to be made ready for loading into the autoloader, a process called clipping.

The participants will have the opportunity to use:

  • Clipping of EM grids into cartridges
  • Loading the clipped grids into 200 kV cryo-TEMs equipped with an autoloader (ThermoScientific Glacios and Talos Arctica microscopes) 
  • Operation of microscopes to collect screening images using SerialEM software

Practical 3: High-end single particle data collection on a 300 kV cryo-TEM

Once a grid suitable for high-end data collection is identified (practical 2), it is transferred into a different cryo-TEM for high-end data collection. The participants will setup automated data collection to collect a data set suitable for image analysis.

The participants will have the opportunity to use:

  • ThermoScientific Titan Krios (300 kV cryo-TEM)
  • Monitor on-the fly image processing, which serves to asses data quality and eventually optimize data collection

Practical 4: Single particle data analysis

In this concluding practical, participants will analyze the single particle cryoEM data collected in practical 3 to reconstruct a 3D volume of the molecule of interest, which was used in practical 1 for EM grid preparation.

The participants will have the opportunity to use:

  • cryoSPARC software installed on a high-performance computing environment

Programme

Day 1 – Monday, 7th October 2024

Time
(Europe/Berlin)
Agenda and SpeakerLocation
09:00 – 09:15Welcome and Introduction
Simon Fromm – EMBL
tbd
09:15 – 10:00Round Table Introductions
All course participants
tbd
10:00 – 10:15Q & Atbd
10:15 – 10:45Coffee Break
10:45 – 11:30Sample and Grid Preparation for Single Particle CryoEM
Dirk Flemming – Heidelberg University
tbd
11:30 – 11:45Q & Atbd
11:45 – 13:00Lunch BreakEMBL Canteen
13:15 – 18:15Practical on Sample Preparation
by Plunge Freezing
EMBL Labs
19:00 – Free evening

Day 2 – Tuesday, 8th October 2024

Time
(Europe/Berlin)
Agenda and SpeakerLocation
09:00 – 09:15Feedback Discussion and Exchanges
on Practicals
tbd
09:15 – 10:00The Transmission Electron Microscope
Cristina Paulino – Heidelberg University
tbd
10:00 – 10:15Q & Atbd
10:15 – 10:45Coffee Break
10:45 – 11:45Practical on Sample Loading on a TEM with
an Autoloader Module
EMBL Labs
11:45 – 13:00Lunch BreakEMBL Canteen
13:45 – 18:15Practical on Grid Screening on a 200 kV TEMEMBL Labs
19:00Free evening

Day 3 – Wednesday, 9th October 2024

Time
(Europe/Berlin)
Agenda and SpeakerLocation
09:00 – 09:15Feedback Discussion and Exchanges
on Practicals
tbd
09:15 – 10:00Single Particle Data Acquisition
Jan Rheinberger – Heidelberg University
tbd
10:00 – 10:15Q & Atbd
10:15 – 10:45Coffee Break
10:45 – 11:45Practical on Single Particle Data Collection and
Live Pre-Processing
EMBL Labs
11:45 – 13:00Lunch BreakEMBL Canteen
13:15 – 18:15Practical on Single Particle Data Collection and Live Pre-Processing (continued)EMBL Labs
19:00Free evening

Day 4 – Thursday, 10th October 2024

Time
(Europe/Berlin)
Agenda and SpeakerLocation
09:00 – 09:15Feedback Discussion and Exchanges
on Practicals
tbd
09:15 – 10:00Single Particle Data Analysis
Simon Fromm – EMBL
tbd
10:00 – 10:15Q & Atbd
10:15 – 10:45Coffee Break
10:45 – 11:45Practical on Single Particle Data Analysistbd
11:45 – 13:00Lunch BreakEMBL Canteen
13:15 – 18:15Practical on Single Particle Data Analysis (continued)tbd
19:00DinnerDowntown

Day 5 – Friday, 11th October 2024

Time
(Europe/Berlin)
Agenda and SpeakerLocation
09:00 – 09:15Feedback discussion and exchanges on practicalstbd
09:15 – 10:00Single-particle cryo-EM of organellar and viral gene expression machineries
Hauke Hillen – University Medical Center
Göttingen / MPI for Multidisciplinary Sciences
tbd
10:00 – 10:15Q & Atbd
10:00 – 10:45Coffee Break
10:45 – 11:45Practical on Single Particle Data Analysis (continued)tbd
11:45 – 13:00Lunch BreakEMBL Canteen
13:15 – 13:45Feedback and Closing Remarkstbd

Practical Info

The course is limited to 8 participants. For selection purposes, please note that your application will not be considered without CV and a letter of motivation, stating your background and how this course would be beneficial for your future work.

Deadline for registration is August 9th 2024. 

Selected participants will be notified by August 16th 2024.

There is no registration fee

Contact:

Simon Fromm (simon.fromm@embl.de)

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