5–7 Oct 2026
Harnack-Haus
Europe/Berlin timezone

Poster #87: Transcriptional Reprogramming by Cyanophage Syn9: Investigating Host–Phage Interactions in Synechococcus WH8109

5 Oct 2026, 21:31
1m
Meitner-Saal I + II (Harnack Haus)

Meitner-Saal I + II

Harnack Haus

Poster only Poster-Session

Speaker

Caroline Jelen (Universität Freiburg)

Description

The marine cyanobacterium Synechococcus WH8109 is a globally widespread and ecologically important model organism that contributes significantly to primary production in ocean environments, making it a valuable system for studying cyanobacterial ecology and virus–host interactions. Its cyanophage, Syn9, is a T4-like virus that infects Synechococcus and is used to study the molecular mechanisms underlying phage-driven reprogramming of the host.
One key aspect involved in manipulation of the host’s transcriptional machinery during phage infection is the regulation and hijacking of host transcriptional regulators, such as RNA-binding proteins (RBPs). Using the complex capture approach, we identified several putative phage RBPs, which were subsequently cloned into Synechococcus for functional characterization. Following expression verification and growth assays across different clones, we aim to identify their RNA targets by CLIP-seq. In parallel, we are isolating Syn9 virion particles to determine whether RNA is packaged into the capsid, and if so, what type of RNA it is.

Author

Caroline Jelen (Universität Freiburg)

Co-authors

Claudia Steglich (University of Freiburg, Germany) Dunja Ferring-Appel (European Molecular Biology Laboratory, Heidelberg, Germany) Frank Stein (European Molecular Biology Laboratory, Heidelberg, Germany) Mandy Rettel (European Molecular Biology Laboratory, Heidelberg, Germany) Matthias W. Hentze (European Molecular Biology Laboratory, Heidelberg, Germany)

Presentation materials

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