Navigation mit Access Keys

Main Content

Main Content

PhD position (no. 1) in biological microED and single molecule electron diffraction

Starting on 1 September or as per agreement

The Biozentrum of the University of Basel is one of the leading life sciences institutes in the world. It consists of 30 groups and 500 employees that research how molecules and cells create life, spanning the scale from atom to organism. Founded in 1971, the Biozentrum has been the birth place of many fundamental discoveries in biology and medicine, spawning several Nobel Laureates.

A PhD position funded by the NanED EU Marie Curie Innovative Training Network is available from September 2021 onwards in the group of Prof Jan Pieter Abrahams at the Biozentrum of the University of Basel. Applicants must have not resided or carried out their main activity (work, studies, etc.) in Switzerland for more than 12 months in the last 3 years preceding June 1, 2021. The applicant shall at the date of recruitment, be in the first four years (full-time equivalent research experience) of their research career and have not been awarded a doctoral degree.

Cryo-electron microscopy can reveal the atomic structures of biological molecules by focusing the electrons that are scattered by the sample into an image. These electron images have low contrast and are very noisy, because electron beam damages the sample.

The Abrahams group has generated strong evidence that the signal-to-noise ratio of the electron image can be boosted significantly by measuring the scattered electrons directly. This resulted in the development of protein nano-crystallography (micro-ED) and we are extending the method to include non-crystalline samples and single molecule electron diffraction (simED). Novel, dedicated hardware will allow us to develop methods for automatically generating vast amounts of electron diffraction data short periods of time. We aim to develop novel tools based on Artificial Intelligence and Big Data technologies for interpreting these data. An important biological focus of our group is on molecular machines for protein degradation. (I. Mohammed, K. A. Schmitz, N. Schenck, T. Maier, J. P. Abrahams, Catalytic cycling of human mitochondrial Lon protease. Sci. Adv. 7, eabf0156 (2021).

Part of the work will be performed at, and will be supported by, the Paul Scherrer Institute (

Your project
Optimal data acquisition for protein microED. Your project is part of an overall project of our group to establish novel technologies and methods for biomolecular structure determination. We will identify optimal data acquisition parameters for two types of data collection, specific for biological crystals: rotation and nanobeam ED. For both methods, we will consider the effects of the following beam parameters: di-/convergence angle, beam size, electron flux, illumination time, energy filtering. We will identify optimal detectors for combinations of beam parameters in rotation and nanobeam mode, comparing several direct, hybrid pixel electron detectors. We will investigate optimal sample preparation procedures for nano-crystals.

Your profile
We are looking for a talented PhD student with the following research profiles:

  • Background in either structural biology, biophysics, crystallography and/or electron microscopy.
  • A keen interest in developing break-through technologies.

The project is highly synergistic, and you will work collaboratively as an enthusiastic team towards achieving the common goals. You will have prime responsibility for one particular project, while providing strong support for the other projects.

We offer
We offer an exciting and stimulating work environment with scientific collaborations within the institute and worldwide.

Basel is an international city with people from 150 nations. Located on the border where three countries meet - Switzerland-Germany- France -, it is Europe’s most important life sciences hub. Basel provides a high standard of living and a rich and varied cultural atmosphere.

Application / Contact
Please apply directly through the NanED ( or CORDIS website ( Otherwise directly at the Biozentrum.