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Portail > Offres > Offre FR550-BRUMIR-003 - Post-doctorat "Comprendre le rôle de la ribonucléase clé RNase Y dans le contrôle de l'expression génétique chez Bacillus subtilis" (H/F)

Post-doc "Understanding the role of the key ribonuclease RNase Y in the control of gene expression in Bacillus subtilis" (M/F)

This offer is available in the following languages:
Français - Anglais

Date Limite Candidature : vendredi 29 octobre 2021

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General information

Reference : FR550-BRUMIR-003
Workplace : PARIS 05
Date of publication : Friday, September 17, 2021
Type of Contract : FTC Scientist
Contract Period : 12 months
Expected date of employment : 1 January 2022
Proportion of work : Full time
Remuneration : Gross salary will vary with candidate's experience starting at 3106€/month before taxes (around 2500€ after taxes) for candidate with less than 2 years post-doctoral experience. See the official CNRS salary table for researcher at http://labexdynamo.ibpc.fr/fp-dynamo-paris/
Desired level of education : PhD
Experience required : Indifferent


Attention: You must not have resided or carried out your main activity (e.g. work or studies) in France for more than 12 months in the 3 years prior to the recruitment date.
You have research experience in the field relevant to the call.

Characterize the activity of RNase Y in controlling the expression of the infC operon and its own gene.
The instability of messenger RNA is fundamental to the control of gene expression. In bacteria, the major mRNA decay pathways initiate with an endonucleolytic cleavage (1). In Bacillus subtilis and probably many other bacteria, RNase Y is the major RNA decay initiating endoribonuclease. Based on preliminary results we currently focus on two aspects: 1) What is the precise mechanism by which RNase Y can control its own expression? 2) RNase Y is directly involved in modulating the biosynthesis of a translation initiation factor (2). We want to understand how physiological conditions could alter RNase Y activity, thereby establishing a potential direct link between mRNA degradation and translation.
The project will involve in vivo and in vitro approaches using molecular biological and biochemical methods.
PI: Harald PUTZER, UMR8261; putzer@ibpc.fr

Related publications:
(1) Laalami S., Zig L. and H. Putzer (2014). Initiation of mRNA decay in bacteria. Cell Mol Life Sci, 71, 1799-1828.
(2) Bruscella P., Shahbabian K., Laalami S. and H. Putzer (2011). RNase Y is responsible for uncoupling the expression of translation factor IF3 from that of the ribosomal proteins L35 and L20 in Bacillus subtilis. Mol. Microbiol., 81, 1526-1541.


- Transcription of RNA substrates by T7 polymerase
- Characterization of the 5' end of the transcripts by primer extension
and Northern blot experiments
- Gene expression studies using fusions with the lacZ gene
- Enzymatic assays of RNase Y endonucleolytic activity
- Purification of recombinant proteins


- General knowledge in molecular biology (cloning, E.coli transformation, etc)
- General knowledge in biochemistry (enzymology, protein purification, etc)
- Knowledge of bacteria
- General knowledge of scientific English

- working with RNA and proteins
- purification of recombinant proteins
- use of gels
- enzymatic assays

Soft skills
- Plan and implement a scientific study
- Organize daily work
- Working in a team
- Keeping a good laboratory notebook

Work Context

All the experiments will be performed at the CNRS, at the Institute of Physical and Chemical Biology on the Curie campus, in the 5th arrondissement of Paris. All the necessary equipment is already in the laboratory or in very close proximity.

The COFUND FP-DYNAMO-PARIS programme offers a unique interdisciplinary environment and a fundamental research initiative in the centre of Paris to train the scientists of tomorrow in the field of physico-chemical biology. The goal of the research programme is to integrate knowledge on gene expression, structural and membrane biology, and bioenergetics in bacteria, chloroplasts and mitochondria in the general context of improving our understanding the biogenesis of energy-transducing membranes. These studies will involve cutting-edge technologies including structural biology (NMR, X-ray crystallography and CryoEM), RNA sequencing, mass-spectrometry, synthetic biology, microfluidics, computational modelling and visualization. Post-doctoral fellows will have the opportunity of developing their research projects in a dynamic scientific environment covering three main research themes: i) RNA biology from bacteria to chloroplasts, ii) Membrane system dynamics and iii) computational modelling of molecular assemblies. They will benefit from the supervision of internationally-recognised experts in their fields, a world-wide network of renowned institutions, cutting-edge research infrastructure and state-of-the-art technical know-how that will allow them to hone their scientific skills, make themselves known and increase their competitiveness on the labour market. Specific training will be proposed to ERs through attendance of the EMBO course on “Laboratory Leadership for Postdocs” included in a retreat in Padua, and involvement in dedicated complementary soft skill training events

Constraints and risks

Fellowship period should start between January 1 and May 31 2022.

Additional Information

The application should be written in English and uploaded at https://emploi.cnrs.fr/. It should include a detailed CV, a minimum of two letters of reference, a letter of motivation describing your short and long term career objectives, and a signed declaration stating that you are in compliance with the mobility rule which stipulates that you have not resided or carried out your main activity (work or studies) in France for more than 12 months during the three years preceding the date of recruitment. In addition, the complete file must also be sent to Bruno MIROUX & Magdalena TORTYNA, respectively director and manager of the project at the following email address DYNAMOcofund@ibpc.fr (Tel: 33 1 58 41 50 64). See details on the website http://labexdynamo.ibpc.fr/fp-dynamo-paris/
The position is intended as an initial step in a research career, and the assessment of the applicants will primarily be based on their research qualifications and their potential as researchers with skills that complement and strengthen on-going research within the partner institutions.

Step 1. The applications of each eligible candidate will be evaluated by independent international experts within the relevant research theme. Eligible applicants will be evaluated based on merits, motivation for the program, academic excellence and personal qualifications such as collaborative and communication skills.

Step 2. A maximum of three candidates will be retained for a video interview with the independent experts for each open position (Nov 2021). After the interview, candidates on the short list will be invited to a conference call with the project supervisor and a DYNAMO board member to define the general scope of the project, the training and the research environment. Candidates will be asked to draft a 3-page project proposal, bringing their own original ideas and will be given 2 weeks to submit it.

Step 3. Each project proposal will be evaluated by one of the independent experts and the DYNAMO board member who evaluated the candidate in the previous steps. The final selection will be made based on the scores obtained at steps 1, 2 and 3. The minimum score must be above 20/40. Top candidate will be offered the postdoc position with a starting date from January 1- May 31, 2022.

The CNRS (Centre National de la Recherche Scientifique) is an equal opportunity employer. Furthermore, FP-DYNAMO-PARIS is committed to promoting the role of women in science and thus explicitly encourages women to apply.

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