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Title

Bunyaviral polymerases – structures, mechanisms, and inhibition

Date & Place

November 26, 2026, 9:15 AM
2 Hankiewicza Street, 02-103 Warsaw

About the event

Bunyaviral negative-strand RNA genome segments are coated and protected by nucleoproteins (NPs) and associated with the viral RNA-dependent RNA polymerase (L protein; one per segment). Together, the RNA segments, NPs, and L proteins form viral ribonucleoprotein complexes (vRNPs), which, upon release into the cytoplasm of an infected cell, transcribe and replicate the viral genome. During my talk, I will cover the structures and molecular mechanisms of bunyaviral L polymerases. I will discuss the orthobunyaviral transcription termination mechanism, which is regulated by genomic template motifs and mRNA elements, as well as the nature of the non-polyadenylated 3′ UTR and its role in translation. Finally, I will address current and potential strategies for inhibiting bunyaviral polymerases.

Speaker

Dr Piotr Gerlach

IMol Polish Academy of Sciences
Piotr Gerlach did his PhD in Stephen Cusack’s group at EMBL in Grenoble, where he worked on the first atomic structure of a bunyaviral polymerase. He later joined Elena Conti’s lab at MPIB in Munich, where he was using cryo-EM to study human nuclear RNA exosome and its adaptor complex NEXT. Currently, he runs the Laboratory of Structural Virology at IMol PAS, which uses cell culture experiments along with molecular and structural biology approaches to study bunyaviral mechanism – focusing on features and functioning of the vRNP machinery, virus–host interactions involved in regulating viral transcription and translation, as well as impact of the orthobunyaviral infection on cellular proteomes, host translation and transcription machineries. He is a recipient of EMBO-IG, NSC Sonata Bis, and FNP First Team grants.

This event is a part of RACE Project: RNA and Cell Biology – from Fundamental Research to Therapies and is funded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Research Executive Agency. Neither the European Union nor the granting authority can be held responsible for them.