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2 PhD’s to study transcription factor binding at the single-molecule level

Function description

Precise regulation of transcription is essential to ensure that the correct genes are expressed in the correct tissue at the correct time. At the basis of gene regulation are gene-specific transcription factors (TFs), which are essential to activate or repress transcription of their target genes in specific tissues. Previous work from our and other labs (Pomp, Mol Cell, 2024) have shown that many TFs bind to DNA cooperatively, but how this cooperativity is established is largely unclear. In the first project (Tineke Lenstra group, NKI), we aim to uncover how transcription factor binding dynamics and cooperativity are regulated by nucleosomes, self-interactions, and DNA shape, and how these mechanisms regulate single-cell transcription dynamics. In the second project (John van Noort group, Leiden University), we will design and build custom chromatin fibers to resolve how these are folded into higher-order structures and how chromatin structure affects transcription factor binding. The projects are tightly linked, and it is anticipated that both PhD’s work together closely.

In collaboration with LUMICKS, manufacturer of C-trap instrumentation, we will setup a novel single-molecule imaging system to measure and perturb the DNA binding kinetics of transcription factors ex vivo and develop a novel assay to map the position of nucleosomes along single chromatin fibers. Moreover, we will exploit the unique opportunity to integrate these ex vivo results with simultaneous DNA binding and transcription measurements at a single locus in living yeast cells using our novel tracking technology (Pomp, Mol Cell, 2024). This powerful ex vivo-in vivo combination will allow us to gain quantitative insight into the different mechanisms of transcription factors cooperativity in gene regulation at single molecule resolution.

Job requirements

We are looking for ambitious and enthusiastic PhD candidates with a strong background in molecular biology, biochemistry, biophysics, or quantitative biology. Previous experience with single-molecule force spectroscopy and or fluorescence, protein purifications or in vitro eukaryotic transcription assays is advantageous. The candidates should be creative, independent, and have a problem-solving attitude. Good communication skill and the ability to work in a multi-disciplinary team are essential.

Compensation

We offer a stimulating and interactive research environment, free use of all state-of-the-art facilities, a competitive salary. The gross salary per month can range from € 3.523,- to €4.277,- (salary PhD scale, according to the Collective Labour Agreement General Hospitals), depending on your experience. In addition, you will receive 8,33% holiday pay and end-of-year bonus (8,33%). The appointment is for a period of at least four years. You will have the opportunity to follow high-quality courses offered by the OOA oncology graduate school (PhD).

How to apply
For further information and addresses visit our websites (https://www.nki.nl/research/research-groups/tineke-lenstra/, www.lenstralab.nl, and physics.leidenuniv.nl/vannoort) or contact Tineke Lenstra (t.lenstra@nki.nl) or John van Noort, (noort@physics.leidenuniv.nl).

Applications should include your CV, a cover letter, your transcripts, and the contact details of at least two references. Ensure that your transcripts and reference information are attached together with your cover letter, as there is no option to submit them separately. To apply, click the 'Apply now' button at the bottom of the page.

First selection will take place on September 1, but interested candidates can respond until vacancy is filed. 

Details

  • Hours per week: 36
  • Salary level: Dutch Collective Labour Agreement for Hospitals
Mylene van der Velden

Mylene van der Velden

Recruiter
Tineke  Lenstra

Tineke Lenstra

Junior Groepsleider

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